【０００１】[0001]
【産業上の利用分野】本発明は、体腔内の観察や処置を
行う内視鏡に関し、特に洗浄により良好な観察視野を確
保するようにした内視鏡に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope for observing and treating the inside of a body cavity, and more particularly to an endoscope in which a good observation field of view is ensured by washing.
【０００２】[0002]
【従来の技術】現在、医療等の様々な分野において多
種、多様の内視鏡が用いられている。このような内視鏡
の挿入部は汚れやすい環境で使用されることが多く、特
に、内視鏡挿入部の先端には観察部が配設されているた
め、この観察部の視野を良好に保つ必要がある。2. Description of the Related Art At present, various and various endoscopes are used in various fields such as medical treatment. The insertion part of such an endoscope is often used in an environment where it is easy to get dirty, and in particular, since the observation part is arranged at the tip of the endoscope insertion part, the field of view of this observation part is improved. Need to keep.
【０００３】このため、従来の内視鏡には、例えば図４
７に示すように、内視鏡１の手元側から内視鏡挿入部先
端２に水を導くためのチャンネル３を設け、このチャン
ネル３の先端側には、上記内視鏡挿入部先端２の観察部
のカバーガラス４に水を吹き付けられる形状のノズル５
を設け、上記チャンネル３の手元側を送水管路６と連通
させ、この送水管路６を送水手段７と連結した構造とし
て、上記内視鏡挿入部先端２の曇りや汚れを洗浄により
除去できるようにしたものがある。For this reason, a conventional endoscope has, for example, FIG.
As shown in FIG. 7, a channel 3 for guiding water from the proximal side of the endoscope 1 to the endoscope insertion portion distal end 2 is provided, and the channel 3 has a distal end side of the endoscope insertion portion distal end 2 above. Nozzle 5 having a shape capable of spraying water on the cover glass 4 of the observation section
Is provided, the proximal side of the channel 3 is communicated with the water supply conduit 6, and the water supply conduit 6 is connected to the water supply means 7, so that clouding and dirt on the distal end 2 of the endoscope insertion portion can be removed by washing. There is something like this.
【０００４】また、体腔内の臓器や組織の観察や処置を
行う内視鏡においては一般に、実開昭５７−４２８０２
号公報、実公平２−７５２２号公報および実開昭５７−
１８７５０４号公報等に示されるように、内視鏡挿入部
先端のカバーガラスの曇りや汚れを除去するためにカバ
ーガラスに送水液を吹き付けたり、カバーガラス上の水
滴等を除去するために圧縮空気を吹き付けたり吸引する
ため、送水チャンネル、送気チャンネルおよび吸引チャ
ンネル等が設けられている。In addition, in an endoscope for observing and treating organs and tissues in a body cavity, it is generally used.
Publication, Jpn.
As shown in Japanese Patent No. 187504, etc., a water-supplying liquid is sprayed onto the cover glass in order to remove fogging and dirt on the cover glass at the tip of the endoscope insertion portion, and compressed air is removed in order to remove water droplets etc. A water supply channel, an air supply channel, a suction channel, and the like are provided for spraying and sucking.
【０００５】さらに、ノズルと送水チャンネル、送気チ
ャンネルおよび吸引チャンネルを有するシースに内視鏡
挿入部を挿入し、内視鏡挿入部先端のカバーガラスに送
水や圧縮空気を吹き付けたり、カバーガラス上の水滴等
を吸引するものがある。Further, the endoscope insertion part is inserted into a sheath having a nozzle, a water supply channel, an air supply channel and a suction channel, and water or compressed air is blown onto the cover glass at the tip of the endoscope insertion part, or on the cover glass. There is one that sucks in water drops.
【０００６】[0006]
【発明が解決しようとする課題】ところで、上述の従来
の内視鏡では、内視鏡挿入部またはシースに設けられた
ノズルから内視鏡挿入部先端に吹き付けられた送水液
は、ノズルからの圧縮空気の吹き付けやノズルからの吸
引だけでは完全に除去することができず、特に内視鏡挿
入部先端のカバーガラス上に水滴として残ると内視鏡の
観察視野を悪化させてしまう。By the way, in the above-mentioned conventional endoscope, the water supply liquid sprayed from the nozzle provided on the endoscope insertion portion or the sheath to the tip of the endoscope insertion portion is discharged from the nozzle. It cannot be completely removed only by blowing compressed air or sucking it from the nozzle, and especially when it remains as a water droplet on the cover glass at the tip of the endoscope insertion portion, the observation field of view of the endoscope is deteriorated.
【０００７】本発明は上記事情に鑑みてなされたもの
で、内視鏡挿入部先端の送水液を完全に除去して、良好
な観察視野を確保することのできる内視鏡を提供するこ
とを目的とする。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an endoscope capable of completely removing the water supply liquid at the distal end of the endoscope insertion portion and ensuring a good observation visual field. To aim.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
本発明による内視鏡は、送水管路に連結し送水チャンネ
ルを介してノズルから内視鏡挿入部先端を洗浄する洗浄
手段と、上記内視鏡挿入部を挿入するシースと、このシ
ースに形成した吸引管路に連結する吸引手段とを備えた
内視鏡において、上記シースの先端内側に形成した縁部
の内面と上記内視鏡挿入部先端面との間の先端間隙部
と、上記シース内面と上記内視鏡挿入部外面との間に上
記先端間隙部に連通すると共に上記吸引管路に連通する
挿入部間隙部とを形成したものである。In order to achieve the above object, the endoscope according to the present invention comprises a cleaning means which is connected to a water supply conduit and cleans the tip of the endoscope insertion portion from a nozzle via a water supply channel. An endoscope including a sheath into which an endoscope insertion portion is inserted and a suction unit connected to a suction conduit formed in the sheath, wherein an inner surface of an edge portion formed inside a distal end of the sheath and the endoscope A distal end gap portion is formed between the distal end surface of the insertion portion, and an insertion portion gap portion is formed between the inner surface of the sheath and the outer surface of the endoscope insertion portion so as to communicate with the distal end gap portion and the suction conduit. It was done.
【０００９】[0009]
【作用】上記構成により、まず、内視鏡挿入部先端を洗
浄するには、洗浄手段により送水管路から送水チャンネ
ルを介しノズルから内視鏡挿入部先端に送水して洗浄を
行う。次に、吸引手段によりシースに形成した吸引管路
から、上記シース内面と上記内視鏡挿入部外面との間の
挿入部間隙部および上記シースの先端内側に形成した縁
部の内面と上記内視鏡挿入部先端面との間の先端間隙部
を通じて吸引を行い、上記内視鏡挿入部先端の送水液を
吸引する。With the above construction, first, in order to clean the tip of the endoscope insertion portion, the cleaning means cleans the water by supplying water from the water supply conduit to the tip of the endoscope insertion portion through the water supply channel. Next, from the suction conduit formed in the sheath by the suction means, to the inner gap of the insertion portion between the inner surface of the sheath and the outer surface of the endoscope insertion portion and the inner surface of the edge formed inside the distal end of the sheath, Suction is performed through the tip gap portion between the endoscope insertion section and the tip end surface, and the water supply liquid at the tip of the endoscope insertion section is sucked.
【００１０】[0010]
【実施例】以下、図面を参照して本発明の実施例を説明
する。図１ないし図３は本発明の第１実施例を示し、図
１は内視鏡全体の概略構成説明図、図２は内視鏡挿入部
先端部の拡大説明図、図３は先端側よりみた内視鏡挿入
部の説明図である。Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention, FIG. 1 is a schematic configuration diagram of the entire endoscope, FIG. 2 is an enlarged explanatory diagram of a distal end portion of an endoscope insertion portion, and FIG. It is explanatory drawing of the endoscope insertion part seen.
【００１１】これらの図において、符号１０は内視鏡を
示し、この内視鏡１０の操作部１１から前方に細長な挿
入部１２が延設され、この内視鏡挿入部１２はシース１
３に挿入されている。また、上記操作部１１の外周側面
にはライトガイド口金１４が設けられ、上記操作部１１
の後方には接眼部１５が設けられている。In these drawings, reference numeral 10 indicates an endoscope, and an elongated insertion portion 12 is extended forward from an operation portion 11 of the endoscope 10. The endoscope insertion portion 12 is a sheath 1.
It is inserted in 3. Further, a light guide cap 14 is provided on the outer peripheral side surface of the operation section 11,
An eyepiece portion 15 is provided behind.
【００１２】上記内視鏡挿入部１２の先端部１６の先端
面１６ａには、ライトガイド１７の出射端面が配置され
ており、上記ライトガイド１７は、上記内視鏡挿入部１
２，操作部１１，ライトガイド口金１４およびライトガ
イドケーブル（図示せず）内を挿通され、図示しない光
源装置へと導かれ、光源装置からの光を内視鏡先端へ伝
達するようになっている。The exit end face of the light guide 17 is arranged on the tip end surface 16a of the tip end portion 16 of the endoscope insertion portion 12, and the light guide 17 is connected to the endoscope insertion portion 1.
2, the operation portion 11, the light guide cap 14 and a light guide cable (not shown) are inserted, guided to a light source device (not shown), and the light from the light source device is transmitted to the tip of the endoscope. There is.
【００１３】また、上記内視鏡挿入部１２にはレンズ管
１８が挿通されており、上記内視鏡挿入部先端部１６の
先端面１６ａで、上記レンズ管１８を閉塞するカバーガ
ラス１９の表面が露呈されている。このカバーガラス１
９の後方には、対物レンズ系２０とリレー光学系２１と
が配設され、上記対物レンズ系２０で結像された光学像
が上記リレー光学系２１で上記操作部１１に伝送され
る。A lens tube 18 is inserted through the endoscope insertion portion 12, and a surface of a cover glass 19 that closes the lens tube 18 at a tip surface 16a of the tip portion 16 of the endoscope insertion portion. Is exposed. This cover glass 1
An objective lens system 20 and a relay optical system 21 are arranged behind 9 and the optical image formed by the objective lens system 20 is transmitted to the operation section 11 by the relay optical system 21.
【００１４】一方、上記シース１３には、洗浄液（水
等）を手元側からシース１３先端まで導くための送水チ
ャンネル２２が設けられており、この送水チャンネル２
２の先端側には、上記カバーガラス１９に洗浄液を吹き
付けるノズル２３が設けられ、上記送水チャンネル２２
手元側は、上記シース１３に形成された送水管路２４と
連通されている。また、この送水管路２４の他端には、
洗浄液（水等）を送出する洗浄手段２５が接続されてい
る。On the other hand, the sheath 13 is provided with a water supply channel 22 for guiding the cleaning liquid (water or the like) from the hand side to the tip of the sheath 13, and the water supply channel 2
A nozzle 23 for spraying a cleaning liquid onto the cover glass 19 is provided on the tip end side of the water supply channel 22.
The proximal side is in communication with the water supply conduit 24 formed in the sheath 13. In addition, at the other end of this water supply conduit 24,
A cleaning means 25 for sending a cleaning liquid (water or the like) is connected.
【００１５】また、上記シース１３の先端には、内側に
縁部１３ａが形成されており、このシース１３内に上記
内視鏡挿入部１２が挿通された状態で、上記縁部１３ａ
内面と上記内視鏡挿入部１２の先端面１６ａとの間に僅
かな隙間、すなわち先端間隙部２６が形成されている。
上記縁部１３ａは、上記内視鏡１０による観察の視野を
狭めること（上記カバーガラス１９上を塞いだりするこ
と等）のない所定の寸法に形成されている。An edge portion 13a is formed inside the sheath 13 at the tip thereof, and the edge portion 13a is inserted in the sheath 13 with the endoscope insertion portion 12 inserted therethrough.
A slight gap, that is, a tip gap portion 26 is formed between the inner surface and the tip surface 16a of the endoscope insertion portion 12.
The edge portion 13a is formed to have a predetermined size that does not narrow the field of view of the endoscope 10 (blocking the cover glass 19 or the like).
【００１６】さらに、上記シース１３内面と上記内視鏡
挿入部１２との間には僅かな隙間、すなわち挿入部間隙
部２７が形成されており、この挿入部間隙部２７は先端
側で上記先端間隙部２６と連通され、手元側で上記シー
ス１３に形成された吸引管路２８と連通されている。ま
た、この吸引管路２８の他端には吸引手段２９が接続さ
れている。Further, a slight gap, that is, an insertion portion gap portion 27 is formed between the inner surface of the sheath 13 and the endoscope insertion portion 12, and the insertion portion gap portion 27 is the tip end side of the tip. It communicates with the gap portion 26, and also communicates with the suction conduit 28 formed in the sheath 13 on the proximal side. A suction means 29 is connected to the other end of the suction pipe line 28.
【００１７】また、上記挿入部間隙部２７と上記吸引管
路２８とが連通された部分のさらに手元側にはＯリング
３０が設けられており、上記挿入部間隙部２７の手元側
での気密が保たれている。Further, an O-ring 30 is provided further on the proximal side of the portion where the insertion gap 27 and the suction conduit 28 communicate with each other, and the insertion gap 27 is airtight on the proximal side. Is maintained.
【００１８】次に、上記構成による実施例の作用につい
て説明する。まず、体腔内等に挿入された内視鏡１０で
体腔内患部等の観察を行う場合、図示しない光源装置か
ら白色光を、ライトガイド１７を通じて伝送し、内視鏡
挿入部１２の先端部１６の先端面１６ａに配置されたラ
イトガイド１７の出射端面より、目的とする部位に向け
て出射する。Next, the operation of the embodiment having the above structure will be described. First, when observing an affected area in a body cavity with the endoscope 10 inserted in the body cavity or the like, white light is transmitted from a light source device (not shown) through the light guide 17, and the distal end portion 16 of the endoscope insertion portion 12 is transmitted. The light is emitted toward the target portion from the emission end surface of the light guide 17 disposed on the front end surface 16a of the.
【００１９】そして、画像がカバーガラス１９を通して
対物レンズ系２０およびリレー光学系２１により操作部
１１に伝送され、観察画像が接眼部１５から得られる。Then, the image is transmitted to the operation section 11 through the objective lens system 20 and the relay optical system 21 through the cover glass 19, and the observation image is obtained from the eyepiece section 15.
【００２０】次に、汚れ等が、上記カバーガラス１９の
表面等に付着して洗浄する場合、洗浄手段２５により洗
浄水を、シース１３に設けられた送水管路２４および送
水チャンネル２２を介して、ノズル２３から上記カバー
ガラス１９に吹き付ける。Next, when dirt or the like adheres to the surface of the cover glass 19 for cleaning, the cleaning water is washed by the cleaning means 25 through the water supply conduit 24 and the water supply channel 22 provided in the sheath 13. Then, it is sprayed from the nozzle 23 onto the cover glass 19.
【００２１】次いで、吸引手段２９により、吸引管路２
８，上記シース１３内面と上記内視鏡挿入部１２との間
の挿入部間隙部２７、および、上記シース１３の先端内
側の縁部１３ａ内面と上記内視鏡挿入部先端面１６ａと
の間の先端間隙部２６を介して、上記カバーガラス１９
の表面等に残留した水滴等を吸引する。Then, by the suction means 29, the suction conduit 2
8, an insertion portion gap portion 27 between the inner surface of the sheath 13 and the endoscope insertion portion 12, and between the inner surface of the edge portion 13a inside the distal end of the sheath 13 and the endoscope insertion portion distal end surface 16a. The cover glass 19 is inserted through the tip gap portion 26 of the
Aspirate water drops etc. remaining on the surface of the.
【００２２】ここで、上記シース１３先端内側に縁部１
３ａが設けられているので、吸引力が確実に上記カバー
ガラス１９の方向に向けられ、強力な吸引を行うことが
できる。Here, the edge portion 1 is formed inside the distal end of the sheath 13.
Since 3a is provided, the suction force is reliably directed toward the cover glass 19 and strong suction can be performed.
【００２３】また、吸引により、カバーガラス１９の表
面等に残留した水滴等のみならず、例えばライトガイド
１７の出射端面等、内視鏡挿入部先端面１６ａに残留し
た水滴等も吸引できるため、出射光量等も常に良好に保
つことが可能となる。Further, by suction, not only water droplets and the like remaining on the surface of the cover glass 19 but also water droplets and the like remaining on the distal end surface 16a of the endoscope insertion portion, such as the emission end surface of the light guide 17, can be sucked. It is possible to always keep the emitted light amount and the like good.
【００２４】さらに、従来の構成の内視鏡であっても、
本発明による内視鏡のシースを用いて吸引効果を向上さ
せることができ、アフターマーケットに十分対応するこ
とができる。Further, even with an endoscope having a conventional structure,
The suction effect can be improved by using the sheath of the endoscope according to the present invention, and the aftermarket can be sufficiently dealt with.
【００２５】次に、図４および図５は本発明の第２実施
例を示し、図４は内視鏡全体の概略構成説明図、図５は
先端側よりみた内視鏡挿入部の説明図である。この第２
実施例も前記第１実施例とほぼ同様に構成されるが、洗
浄に係る構成をシース側ではなく内視鏡本体側に備えた
点が前記第１実施例とは異なる。Next, FIGS. 4 and 5 show a second embodiment of the present invention, FIG. 4 is an explanatory view of a schematic configuration of the entire endoscope, and FIG. 5 is an explanatory view of an endoscope insertion portion viewed from the distal end side. Is. This second
The embodiment is also configured in substantially the same manner as the first embodiment, but differs from the first embodiment in that a cleaning-related configuration is provided not on the sheath side but on the endoscope body side.
【００２６】尚、上記第１実施例と同じ構成部分につい
ては、その説明を省略する。すなわち、図４および図５
に示すように、内視鏡４０の操作部４１から前方に細長
な挿入部４２が延設され、この内視鏡挿入部４２はシー
ス４３に挿入されている。The description of the same components as those in the first embodiment will be omitted. That is, FIG. 4 and FIG.
As shown in FIG. 3, an elongated insertion portion 42 extends forward from the operation portion 41 of the endoscope 40, and the endoscope insertion portion 42 is inserted into the sheath 43.
【００２７】上記内視鏡挿入部４２には、洗浄液（水
等）を手元側から、この内視鏡挿入部４２先端まで導く
ための送水チャンネル４４が設けられており、この送水
チャンネル４４の先端側には、カバーガラス４５に洗浄
液を吹き付けるノズル４６が設けられ、上記送水チャン
ネル４４手元側は、上記操作部４１に設けられた送水管
路４７と連通されている。また、この送水管路４７の他
端には、洗浄液（水等）を送出する洗浄手段４８が接続
されている。The endoscope insertion section 42 is provided with a water supply channel 44 for guiding the cleaning liquid (water or the like) from the hand side to the tip of the endoscope insertion section 42, and the tip of the water supply channel 44. A nozzle 46 for spraying the cleaning liquid onto the cover glass 45 is provided on the side, and the near side of the water supply channel 44 is connected to a water supply conduit 47 provided on the operation section 41. Further, a cleaning means 48 for sending out a cleaning liquid (water or the like) is connected to the other end of the water supply conduit 47.
【００２８】また、上記シース４３の先端には、内側に
縁部４３ａが形成されており、このシース４３内に上記
内視鏡挿入部４２が挿通された状態で、上記縁部４３ａ
内面と上記内視鏡挿入部４２の先端面４２ａとの間に僅
かな隙間、すなわち先端間隙部４９が形成されている。
上記縁部４３ａは、上記内視鏡４０による観察の視野を
狭めること（上記カバーガラス４５上を塞いだりするこ
と等）のない所定の寸法に形成されている。Further, an edge portion 43a is formed on the inner side of the distal end of the sheath 43, and the edge portion 43a is inserted in the sheath 43 while the endoscope insertion portion 42 is inserted.
A slight gap, that is, a tip gap portion 49 is formed between the inner surface and the tip surface 42a of the endoscope insertion portion 42.
The edge portion 43a is formed to have a predetermined size without narrowing the visual field for observation by the endoscope 40 (blocking the cover glass 45 or the like).
【００２９】さらに、上記シース４３内面と上記内視鏡
挿入部４２との間には僅かな隙間、すなわち挿入部間隙
部５０が形成されており、この挿入部間隙部５０は先端
側で上記先端間隙部４９と連通され、手元側で上記シー
ス４３に形成された吸引管路５１と連通されている。ま
た、この吸引管路５１の他端には吸引手段５２が接続さ
れている。Further, a slight gap, that is, an insertion portion gap portion 50 is formed between the inner surface of the sheath 43 and the endoscope insertion portion 42, and the insertion portion gap portion 50 is the tip end side. It communicates with the gap portion 49 and communicates with the suction conduit 51 formed on the sheath 43 on the proximal side. The suction means 52 is connected to the other end of the suction pipe line 51.
【００３０】また、上記挿入部間隙部５０と上記吸引管
路５１とが連通された部分のさらに手元側にはＯリング
５３が設けられており、上記挿入部間隙部５０の手元側
での気密が保たれている。An O-ring 53 is provided further on the proximal side of the portion where the insertion portion gap 50 and the suction pipe line 51 communicate with each other, and the insertion portion gap 50 is airtight on the proximal side. Is maintained.
【００３１】尚、図中、符号５４はライトガイドを示
す。In the figure, reference numeral 54 indicates a light guide.
【００３２】上記構成とすることにより、内視鏡挿入部
４２先端のカバーガラス４５を洗浄する場合、洗浄手段
４８により洗浄水を、操作部４１に設けられた送水管路
４７および送水チャンネル４４を介して、ノズル４６か
ら上記カバーガラス４５に吹き付ける。With the above structure, when the cover glass 45 at the distal end of the endoscope insertion portion 42 is washed, the washing water is washed by the washing means 48 and the water feeding pipe line 47 and the water feeding channel 44 provided in the operating portion 41 are used. Through the nozzle 46, it is sprayed onto the cover glass 45.
【００３３】次いで、吸引手段５２により、吸引管路５
１，シース４３内面と上記内視鏡挿入部４２との間の挿
入部間隙部５０、および、上記シース４３の先端内側の
縁部４３ａ内面と上記内視鏡挿入部先端面４２ａとの間
の先端間隙部４９を介して、上記カバーガラス４５の表
面等に残留した水滴等を吸引する。Then, by the suction means 52, the suction conduit 5
1, an insertion portion gap portion 50 between the inner surface of the sheath 43 and the endoscope insertion portion 42, and between the inner surface of the edge portion 43a inside the distal end of the sheath 43 and the endoscope insertion portion distal end surface 42a. Water droplets and the like remaining on the surface of the cover glass 45 are sucked through the tip gap portion 49.
【００３４】このように、本実施例によれば、洗浄に係
る構成が内視鏡本体側に具備されているため、シースの
構造を簡素で小型なものとすることができる。As described above, according to this embodiment, since the structure for cleaning is provided on the endoscope main body side, the structure of the sheath can be made simple and small.
【００３５】次に、図６および図７は本発明の第３実施
例を示し、図６は内視鏡挿入部先端部の拡大説明図、図
７は先端側よりみた内視鏡挿入部の説明図である。この
第３実施例も前記第１実施例とほぼ同様に構成される
が、シースに挿通された内視鏡挿入部を、さらにシース
に挿通して吸引効果を向上させた点が前記第１実施例と
は異なる。Next, FIGS. 6 and 7 show a third embodiment of the present invention, FIG. 6 is an enlarged explanatory view of the distal end portion of the endoscope insertion portion, and FIG. 7 is the endoscope insertion portion seen from the distal end side. FIG. The third embodiment is also constructed in substantially the same manner as the first embodiment, but the first embodiment is that the endoscope insertion portion inserted into the sheath is further inserted into the sheath to improve the suction effect. Different from the example.
【００３６】尚、上記第１実施例と同じ構成部分につい
ては、その説明を省略する。すなわち、図６および図７
に示すように、内視鏡６０の挿入部６１は、第１のシー
ス６２に挿通されており、この第１のシース６２は先端
に透明窓６３が設けられ、先端部が気密になっている。The description of the same components as those in the first embodiment will be omitted. That is, FIG. 6 and FIG.
As shown in, the insertion portion 61 of the endoscope 60 is inserted through a first sheath 62, and the first sheath 62 is provided with a transparent window 63 at the tip, and the tip is airtight. .
【００３７】また、上記第１のシース６２に挿通された
上記内視鏡挿入部６１は、さらに第２のシース６４に挿
通されており、この第２のシース６４には、前記第１実
施例と同様、先端側にノズル６５を有する送水チャンネ
ル６６が設けられている。この送水チャンネル６６の手
元側は、図示しない送水管路を介して洗浄手段（図示せ
ず）と連通されている。Further, the endoscope insertion portion 61 inserted through the first sheath 62 is further inserted through a second sheath 64, and the second sheath 64 has the second embodiment described above. Similarly to the above, a water supply channel 66 having a nozzle 65 on the tip side is provided. The near side of the water supply channel 66 communicates with a cleaning means (not shown) via a water supply pipe line (not shown).
【００３８】また、上記第２のシース６４の先端には、
内側に縁部６４ａが形成されており、この第２のシース
６４内に上記第１のシース６２が挿通された状態で、上
記縁部６４ａ内面と上記第１のシース６２の先端面６２
ａとの間に僅かな隙間、すなわち先端間隙部６７が形成
されている。上記縁部６４ａは、上記内視鏡６０による
観察の視野を狭めること（上記第１のシース６２の透明
窓６３上を塞いだりすること等）のない所定の寸法に形
成されている。In addition, at the tip of the second sheath 64,
An edge 64a is formed on the inner side, and with the first sheath 62 inserted in the second sheath 64, the inner surface of the edge 64a and the end face 62 of the first sheath 62 are formed.
A slight gap, that is, the tip end gap portion 67 is formed between a and a. The edge portion 64a is formed to have a predetermined size without narrowing the visual field of observation by the endoscope 60 (for example, blocking the transparent window 63 of the first sheath 62).
【００３９】さらに、上記第２のシース６４内面と上記
第１のシース６２外面との間には僅かな隙間、すなわち
挿入部間隙部６８が形成されており、この挿入部間隙部
６８は先端側で上記先端間隙部６７と連通され、手元側
で図示しない吸引管路を介し、吸引手段と連通されてい
る。Further, a slight gap, that is, an insertion portion gap portion 68 is formed between the inner surface of the second sheath 64 and the outer surface of the first sheath 62, and the insertion portion gap portion 68 is on the distal end side. Is communicated with the above-mentioned tip gap portion 67, and is communicated with the suction means via a suction pipe line (not shown) on the hand side.
【００４０】上記構成とすることにより、第１のシース
６２先端の透明窓６３を洗浄する場合、洗浄手段（図示
せず）により洗浄水を、図示しない送水管路および送水
チャンネル６６を介して、ノズル６５から上記透明窓６
３に吹き付ける。With the above structure, when the transparent window 63 at the tip of the first sheath 62 is washed, the washing water is washed by the washing means (not shown) through the water feeding conduit and the water feeding channel 66 (not shown). From the nozzle 65 to the transparent window 6
Spray on 3.
【００４１】次いで、吸引手段（図示せず）により、図
示しない吸引管路，第２のシース６４内面と上記第１の
シース６２外面との間の挿入部間隙部６８、および、上
記第２のシース６４の先端内側の縁部６４ａ内面と上記
第１のシース６２の先端面６２ａとの間の先端間隙部６
７を介して、上記透明窓６３の表面等に残留した水滴等
を吸引する。Then, by a suction means (not shown), a suction conduit (not shown), the insertion portion gap 68 between the inner surface of the second sheath 64 and the outer surface of the first sheath 62, and the second sheath. The tip gap portion 6 between the inner surface of the edge 64a inside the tip of the sheath 64 and the tip surface 62a of the first sheath 62.
Water droplets and the like remaining on the surface of the transparent window 63 and the like are sucked through 7.
【００４２】このように、本実施例によれば、２重にシ
ースを設けることにより、内視鏡先端への汚れの付着を
確実に防止するとともに、中間部の透明窓を有するシー
スに汚れが付着し、これを洗浄して除去した後、水滴等
の吸引を確実に行い、観察視野を良好に保つことができ
る。As described above, according to the present embodiment, by providing the sheath twice, it is possible to surely prevent the dirt from adhering to the distal end of the endoscope and to prevent the sheath having the transparent window in the middle part from being dirty. After adhering and washing and removing it, water droplets and the like can be surely sucked, and the observation field of view can be kept good.
【００４３】図８ないし図１０は本発明の第４実施例を
示し、図８は内視鏡全体の概略構成説明図、図９は内視
鏡挿入部の拡大説明図であり、図９（ａ）は図８のＡ方
向から見た矢視図、図９（ｂ）は図８のＢ−Ｂ線断面
図、図９（ｃ）は図８のＣ−Ｃ線断面図、図１０は内視
鏡挿入部の変形例の断面説明図である。8 to 10 show a fourth embodiment of the present invention, FIG. 8 is an explanatory view of a schematic configuration of the entire endoscope, FIG. 9 is an enlarged explanatory view of an endoscope insertion portion, and FIG. FIG. 9A is a sectional view taken along the line BB of FIG. 8, FIG. 9C is a sectional view taken along the line CC of FIG. 8, and FIG. It is sectional explanatory drawing of the modification of an endoscope insertion part.
【００４４】この第４実施例は第１実施例における送
水、吸引ための挿入部間隙部及び先端間隙部の構成を変
更した例である。なお、他の部分については前記第１実
施例とほぼ同様に構成されており、第１実施例と同じ構
成要素については、その説明を省略する。The fourth embodiment is an example in which the structures of the insertion portion gap portion and the tip gap portion for water supply and suction in the first embodiment are changed. The other parts are configured almost in the same manner as in the first embodiment, and the description of the same components as in the first embodiment will be omitted.
【００４５】すなわち、図８および図９に示すように、
内視鏡１２０の本体１２１から前方に細長な挿入部１２
２が延設され、この内視鏡挿入部１２２はシース１２３
に挿入されている。また、前記内視鏡本体１２１の外周
側面にはライトガイド口金１４が設けられ、内視鏡本体
１２１の後方には接眼部１５が設けられている。That is, as shown in FIG. 8 and FIG.
The elongated insertion portion 12 is located forward from the main body 121 of the endoscope 120.
2 is extended, and the endoscope insertion portion 122 has a sheath 123.
Has been inserted into. Further, a light guide base 14 is provided on the outer peripheral side surface of the endoscope body 121, and an eyepiece portion 15 is provided behind the endoscope body 121.
【００４６】内視鏡１２０は、内視鏡挿入部１２２の先
端面１２４において、挿入部内に設けられた内視鏡光学
系を閉塞するカバーガラス１２５が配設されており、こ
のカバーガラス１２５の前方の被写体像が前記内視鏡光
学系によって結像され、結像された光学像が接眼部１５
まで伝送されるようになっている。In the endoscope 120, a cover glass 125 for closing the endoscope optical system provided in the insertion portion is arranged on the tip end surface 124 of the endoscope insertion portion 122. A subject image in front is formed by the endoscope optical system, and the formed optical image is the eyepiece unit 15.
Is being transmitted.
【００４７】一方、前記シース１２３は、手元側からシ
ース本体部１２６、シース挿入部１２７、シース先端部
１２８を有して構成されており、シース挿入部１２７に
内視鏡挿入部１２２が挿入されると共に、内視鏡本体１
２１に対してシース本体部１２６が取り付いて固定可能
になっている。シース先端部１２８には、開口部１２９
が設けられ、開口部１２９より内視鏡挿入部先端面１２
４の図示しないライトガイド出射端面及びカバーガラス
１２５の表面が露呈しており、この開口部１２９を通し
て被検部位の照明と観察が可能となっている。On the other hand, the sheath 123 has a sheath body portion 126, a sheath insertion portion 127, and a sheath distal end portion 128 from the proximal side, and the endoscope insertion portion 122 is inserted into the sheath insertion portion 127. And the endoscope body 1
The sheath main body 126 is attached to and fixed to 21. An opening 129 is formed in the sheath distal end 128.
Is provided, and the distal end surface 12 of the endoscope insertion portion is opened from the opening 129.
The light guide emission end surface (not shown) of 4 and the surface of the cover glass 125 are exposed, and illumination and observation of the site to be inspected are possible through the opening 129.
【００４８】また、シース先端部１２８には、内視鏡挿
入部先端面１２４に対向して周縁部を覆う縁部１３０が
設けられ、この縁部１３０の内側の一部には図８及び図
９（ｂ）に示すような先端間隙部となる先端部溝１３１
が設けられている。そして、シース挿入部１２７の内周
部には、図８及び図９（ｃ）に示すような挿入部間隙部
となる挿入部溝１３２がシース本体部１２６からシース
先端部１２８まで延設されており、挿入部溝１３２の手
元側はシース本体部１２６に設けられた流体用口金１３
３に連通し、挿入部溝１３２の先端側は前記先端部溝１
３１に連通している。Further, the sheath distal end portion 128 is provided with an edge portion 130 facing the endoscope insertion portion distal end surface 124 and covering the peripheral edge portion. A part of the inside of the edge portion 130 is shown in FIG. 9 (b), the tip end groove 131 becomes a tip end gap portion.
Is provided. Then, on the inner peripheral portion of the sheath insertion portion 127, an insertion portion groove 132 serving as an insertion portion gap portion as shown in FIGS. 8 and 9C is provided extending from the sheath main body portion 126 to the sheath distal end portion 128. And the proximal side of the insertion portion groove 132 is the fluid mouthpiece 13 provided on the sheath body 126.
3 and the tip side of the insertion groove 132 is the tip groove 1
It communicates with 31.
【００４９】なお、挿入部に設けられる挿入部間隙部の
変形例として、図１０に示すように、シース挿入部１２
７ａの内周面と内視鏡挿入部１２２の外周面との間に隙
間１３４を設けて構成しても良い。As a modification of the insertion portion gap portion provided in the insertion portion, as shown in FIG.
A gap 134 may be provided between the inner peripheral surface of 7a and the outer peripheral surface of the endoscope insertion portion 122.
【００５０】前記流体用口金１３３には、管路を切り換
えるための三方活栓１３５を介して、送水手段１３６及
び吸引手段１３７（または送気手段１３８）が接続され
ており、これらの送水手段１３６，吸引手段１３７，送
気手段１３８によって内視鏡挿入部先端面１２４に対し
て洗浄水の送出、送気、吸引等を行えるようになってい
る。A water supply means 136 and a suction means 137 (or an air supply means 138) are connected to the fluid mouthpiece 133 via a three-way stopcock 135 for switching a pipe line, and these water supply means 136 and 136 are connected. By the suction means 137 and the air supply means 138, the washing water can be sent to the tip end surface 124 of the endoscope, and the air is supplied and sucked.
【００５１】また、前記シース１２３内部の挿入部溝１
３２と流体用口金１３３との合流部より手元側端部近傍
には、Ｏリング１３９が設けられており、挿入部間隙部
の手元側においてシース挿入部内周部と内視鏡挿入部外
周部との間の気密が保たれている。Also, the insertion groove 1 inside the sheath 123.
An O-ring 139 is provided near the end on the proximal side of the confluence of 32 and the fluid mouthpiece 133, and the inner peripheral portion of the sheath insertion portion and the outer peripheral portion of the endoscope insertion portion are disposed on the proximal side of the gap portion of the insertion portion. The airtightness between them is maintained.
【００５２】次に、上記構成による実施例の作用につい
て説明する。内視鏡１２０によって体腔内患部等の観察
を行う際に、汚れなどが挿入部先端部のカバーガラス１
２５の表面に付着してその除去のために洗浄を行う場
合、三方活栓１３５を操作して、送水手段１３６から洗
浄水をシース内に送り込み、シース１２３内面と内視鏡
挿入部１２２との間の挿入部溝１３２及び先端部溝１３
１を介して洗浄水をシース先端部１２８へ導き、先端部
溝１３１端部の縁部１３０より前記カバーガラス１２５
に吹き付ける。ここで、内視鏡挿入部先端面１２４にお
ける洗浄水等の流れは図９（ａ）中の矢印で示すように
なる。Next, the operation of the embodiment having the above structure will be described. When observing a diseased part in a body cavity with the endoscope 120, the cover glass 1 on the tip of the insertion part becomes dirty.
In the case of adhering to the surface of No. 25 and performing cleaning for its removal, the three-way stopcock 135 is operated to send the cleaning water into the sheath from the water supply means 136, and the space between the inner surface of the sheath 123 and the endoscope insertion portion 122 is Insertion groove 132 and tip groove 13
The cleaning water is guided to the sheath distal end portion 128 via 1, and the cover glass 125 is introduced from the edge portion 130 at the end portion of the distal end groove 131.
Spray on. Here, the flow of cleaning water or the like on the distal end surface 124 of the endoscope insertion portion is as shown by the arrow in FIG.
【００５３】次いで、三方活栓１３５を操作して、シー
ス１２３の流体用口金１３３に吸引手段１３７を連通さ
せ、前記先端部溝１３１及び挿入部溝１３２を介して内
視鏡挿入部先端面１２４上に負圧を生じさせてカバーガ
ラス１２５の表面などに残留した水滴等を先端部溝１３
１より吸引する。なお、吸引手段１３７の代わりに送気
手段１３８をシース１２３内部に連通させて、先端部溝
１３１、挿入部溝１３２を介して送気を行い、カバーガ
ラスの表面などに残留した水滴等を二酸化炭素ガスある
いは圧縮空気などのガスで吹き飛ばしても良い。Next, the three-way stopcock 135 is operated to connect the suction means 137 to the fluid mouthpiece 133 of the sheath 123, and through the distal end groove 131 and the insertion groove 132, on the distal end surface 124 of the endoscope insertion part. A negative pressure is generated on the front surface of the cover glass 125, and water droplets and the like remaining on the surface of the cover glass 125 are removed.
Aspirate from 1. It should be noted that instead of the suction means 137, an air supply means 138 is made to communicate with the inside of the sheath 123, and air is supplied through the tip groove 131 and the insertion groove 132 to remove water droplets and the like remaining on the surface of the cover glass. It may be blown off with a gas such as carbon gas or compressed air.
【００５４】本実施例の構成によれば、カバーガラスの
表面などに残留した水滴等の吸引は、先端部溝１３１の
みならず先端部溝１３１が設けられているシース先端部
１２８の縁部１３０と内視鏡挿入部先端面１２４との間
の隙間を含めて開口部１２９全周から効率良く吸引を行
うことが可能である。According to the configuration of this embodiment, the suction of water droplets and the like remaining on the surface of the cover glass, etc. is not limited to the tip groove 131, but the edge portion 130 of the sheath tip portion 128 provided with the tip groove 131. It is possible to efficiently perform suction from the entire circumference of the opening 129 including the gap between the front end surface 124 of the endoscope and the endoscope insertion portion.
【００５５】また、吸引により、カバーガラス１２５の
表面等に残留した水滴のみならず、例えばライトガイド
の出射端面等、内視鏡挿入部先端面に残留した水滴等も
吸引できるため、出射光量や配光等も常に良好に保つこ
とが可能である。Further, by suction, not only the water droplets remaining on the surface of the cover glass 125, but also the water droplets remaining on the tip end surface of the endoscope insertion portion, such as the light emitting end surface of the light guide, can be sucked. It is possible to always keep good light distribution.
【００５６】さらに、既に市場で使用されている従来の
構成の内視鏡であっても、従来の内視鏡との組み合わせ
が可能なシースを作成して用いることで、内視鏡挿入部
先端全面のカバーガラス等の洗浄を容易に効率良く行う
ことができるようになり、アフターマーケットに十分対
応することができる。Furthermore, even with an endoscope having a conventional structure that has already been used in the market, by creating and using a sheath that can be combined with a conventional endoscope, the distal end of the endoscope insertion portion can be obtained. It becomes possible to easily and efficiently clean the entire surface of the cover glass and the like, and it is possible to sufficiently deal with the aftermarket.
【００５７】図１１ないし図１３は本発明の第５実施例
を示し、図１１は内視鏡挿入部先端部の断面説明図、図
１２及び図１３は内視鏡挿入部先端部の拡大説明図であ
り、図１２（ａ）は図１１のＡ方向から見た矢視図、図
１２（ｂ）は図１１のＢ−Ｂ線断面図、図１３は図１２
（ｂ）のＣ−Ｃ線断面図である。11 to 13 show a fifth embodiment of the present invention, FIG. 11 is a sectional explanatory view of the distal end portion of the endoscope insertion portion, and FIGS. 12 and 13 are enlarged explanations of the distal end portion of the endoscope insertion portion. 12A is a view as seen from the direction A in FIG. 11, FIG. 12B is a sectional view taken along line BB in FIG. 11, and FIG.
It is the CC sectional view taken on the line of (b).
【００５８】この第５実施例は前記第４実施例の変形例
であり、本実施例は第４実施例における送水、吸引ため
の先端間隙部としての溝部の構成を変更した例である。
なお、前記第４実施例と同じ構成部分については、その
説明を省略する。The fifth embodiment is a modification of the fourth embodiment, and this embodiment is an example in which the structure of the groove portion as the tip gap portion for water supply and suction in the fourth embodiment is changed.
The description of the same components as those in the fourth embodiment will be omitted.
【００５９】すなわち、図１１ないし図１３に示すよう
に、シース先端部１４０には、開口部１４１が設けられ
ると共に、内視鏡挿入部先端面１２４に対向して周縁部
を覆う縁部１４２が設けられている。この縁部１４２の
内側には、図１１及び図１２（ｂ）に示すように先端間
隙部となる先端部溝１４３が複数設けられていると共
に、これらの先端部溝１４３を互いに連絡する連絡溝１
４４が設けられている。すなわち先端部溝１４３が縁部
１４２内側において基端部から開口部１４１に向かって
形成されていると共に、図１３及び図１２（ｂ）に示す
ように、縁部１４２内側の基端部が円周状に切り欠かれ
て連絡溝１４４が形成されている。なお、図１１は図１
２（ｂ）のＤ−Ｄ線断面図となっている。That is, as shown in FIGS. 11 to 13, the sheath distal end portion 140 is provided with an opening 141 and an edge portion 142 facing the endoscope insertion portion distal end surface 124 and covering the peripheral edge portion. It is provided. Inside the edge portion 142, as shown in FIGS. 11 and 12 (b), a plurality of front end grooves 143 serving as front end gaps are provided, and a connecting groove for connecting these front end grooves 143 to each other. 1
44 are provided. That is, the tip end groove 143 is formed from the base end portion toward the opening 141 inside the edge portion 142, and as shown in FIGS. 13 and 12B, the base end portion inside the edge portion 142 is circular. A communication groove 144 is formed by cutting out in a circumferential shape. Note that FIG. 11 is shown in FIG.
It is the DD sectional view taken on the line 2 (b).
【００６０】そして、先端部溝１４３の後方には第４実
施例と同様に挿入部間隙部となる挿入部溝１４５が先端
部溝１４３と連通して設けられ、シース手元側まで延設
されている。An insertion groove 145, which serves as an insertion gap, is provided behind the tip groove 143 in communication with the tip groove 143 and extends to the proximal side of the sheath. There is.
【００６１】このような構成により、シース挿入部内周
部に設けられた挿入部間隙部となる挿入部溝１４５から
複数の先端部溝１４３へ連絡溝１４４を介して連通する
ため、内視鏡挿入部先端面１２４における洗浄水等の流
れは図１２（ａ）中の矢印で示すようになり、挿入部先
端面のカバーガラス等に複数の方向から洗浄水やガスを
吹き付けることが可能となる。また、複数の先端部溝１
４３を介して複数の方向から吸引を行うことが可能とな
る。With this structure, since the insertion groove 145, which is the insertion portion gap provided in the inner peripheral portion of the sheath insertion portion, communicates with the plurality of distal end grooves 143 through the communication groove 144, the endoscope insertion is completed. The flow of the cleaning water or the like on the tip surface 124 of the portion is as shown by the arrow in FIG. 12A, and it becomes possible to spray the cleaning water or the gas onto the cover glass or the like on the tip surface of the insertion portion from a plurality of directions. Also, a plurality of tip grooves 1
It is possible to perform suction from a plurality of directions via 43.
【００６２】図１４ないし図１８は本発明の第６実施例
を示し、図１４は内視鏡全体の概略構成説明図、図１５
は内視鏡挿入部の拡大説明図であり、図１５（ａ）は図
１４のＡ方向から見た矢視図、図１５（ｂ）は図１４の
Ｂ−Ｂ線断面図、図１５（ｃ）は図１４のＣ−Ｃ線断面
図、図１６ないし図１８は内視鏡挿入部とシース挿入部
との間の間隙部の気密構造を説明する図であり、図１６
は内視鏡を挿入した状態のシース挿入部の断面説明図、
図１７は内視鏡を挿入していない状態のシース挿入部の
断面説明図、図１８は間隙部の気密構造の変形例を示す
断面説明図である。14 to 18 show a sixth embodiment of the present invention, and FIG. 14 is a schematic structural explanatory view of the entire endoscope, and FIG.
15A is an enlarged explanatory view of the endoscope insertion portion, FIG. 15A is a view seen from the direction A in FIG. 14, FIG. 15B is a cross-sectional view taken along the line BB of FIG. 14C is a cross-sectional view taken along the line CC in FIG. 14, and FIGS. 16 to 18 are views for explaining the airtight structure of the gap between the endoscope insertion portion and the sheath insertion portion.
Is a cross-sectional explanatory view of the sheath insertion portion with the endoscope inserted,
FIG. 17 is a cross-sectional explanatory view of the sheath insertion portion in a state where the endoscope is not inserted, and FIG. 18 is a cross-sectional explanatory view showing a modified example of the airtight structure of the gap portion.
【００６３】この第６実施例は送水用の間隙部と吸引用
の間隙部とを別に設けた例である。なお、他の部分につ
いては前記第１実施例とほぼ同様に構成されており、第
１実施例と同じ構成要素については、その説明を省略す
る。The sixth embodiment is an example in which a gap for water supply and a gap for suction are provided separately. The other parts are configured almost in the same manner as in the first embodiment, and the description of the same components as in the first embodiment will be omitted.
【００６４】すなわち、図１４及び図１５に示すよう
に、内視鏡挿入部１２２が挿入されるシース１５０のシ
ース挿入部１５１の内周部には、図１５（ｃ）に示す挿
入部間隙部としての送水用挿入部溝１５２と吸引用挿入
部溝１５３とが、シース本体部１５４からシース先端部
１５５まで延設されている。送水用挿入部溝１５２、吸
引用挿入部溝１５３は、手元側がそれぞれシース本体部
１５４に設けられた送水用口金１５６、吸引用口金１５
７に連通する一方、先端側がシース先端部１５５の縁部
１５８内側に設けられた先端間隙部としての送水用先端
部溝１５９、吸引用先端部溝１６０にそれぞれ連通して
いる。また、シース先端部１５５には、第４実施例と同
様に開口部１６１が設けられ、開口部１６１より内視鏡
挿入部先端面が露呈している。That is, as shown in FIGS. 14 and 15, at the inner peripheral portion of the sheath insertion portion 151 of the sheath 150 into which the endoscope insertion portion 122 is inserted, the insertion portion gap portion shown in FIG. The water supply insertion groove 152 and the suction insertion groove 153 as described above extend from the sheath main body portion 154 to the sheath distal end portion 155. The water supply insertion groove 152 and the suction insertion groove 153 have a water supply mouthpiece 156 and a suction mouthpiece 15 provided on the sheath body 154 on the proximal side, respectively.
7, while the tip side communicates with a water feeding tip groove 159 and a suction tip groove 160 as tip gap portions provided inside the edge portion 158 of the sheath tip portion 155. Further, the sheath distal end portion 155 is provided with an opening 161 as in the fourth embodiment, and the endoscope insertion portion distal end surface is exposed from the opening 161.
【００６５】前記送水用口金１５６、吸引用口金１５７
には、それぞれ送水手段１３６と吸引手段１３７（また
は送気手段１３８）が接続されている。The water supply mouthpiece 156 and the suction mouthpiece 157.
A water supply means 136 and a suction means 137 (or an air supply means 138) are connected to each of these.
【００６６】このように構成されたシース１５０におい
ては、シース１５０に内視鏡挿入部１２２を挿入したと
きに、送水用挿入部溝１５２と送水用先端部溝１５９、
及び吸引用挿入部溝１５３と吸引用先端部溝１６０が互
いに気密な独立したチャンネルを形成することによっ
て、送水と吸引（または送気）を別々のチャンネルで別
々にまたは同時に行うことが可能となる。このとき、内
視鏡挿入部先端面における洗浄水等の流れは図１５
（ａ）中の矢印で示すようになる。In the sheath 150 thus constructed, when the endoscope insertion portion 122 is inserted into the sheath 150, the water feeding insertion groove 152 and the water feeding tip groove 159,
Since the suction insertion groove 153 and the suction tip groove 160 form independent channels that are airtight to each other, it is possible to perform water supply and suction (or air supply) separately or simultaneously in different channels. . At this time, the flow of the washing water and the like on the distal end surface of the endoscope insertion portion is shown in FIG.
It becomes as shown by the arrow in (a).
【００６７】送水用挿入部溝１５２と吸引用挿入部溝１
５３とを互いに気密な独立したチャンネルとするため
に、例えば図１６及び図１７に示すようにシース挿入部
１５１が構成されている。なお、図１６は内視鏡挿入部
１２２を挿入した状態、図１７は内視鏡挿入部１２２を
挿入する前の状態のシース挿入部１５１の断面形状を示
している。Water supply insertion groove 152 and suction insertion groove 1
In order to make 53 and the independent channels airtight to each other, a sheath insertion portion 151 is configured as shown in FIGS. 16 and 17, for example. 16 shows a state in which the endoscope insertion portion 122 is inserted, and FIG. 17 shows a sectional shape of the sheath insertion portion 151 before the insertion of the endoscope insertion portion 122.
【００６８】すなわち、シース挿入部１５１を弾性部材
によって形成すると共に、シース挿入部１５１の内周部
において送水用挿入部溝１５２及び吸引用挿入部溝１５
３を形成してない部分の内径（横方向の幅）を図１７に
示すように内視鏡挿入部１２２の外径よりも少し小さく
設定して構成する。このようにシース挿入部１５１を形
成することによって、内視鏡挿入部１２２を挿入したと
き、シース挿入部１５１の弾性力により図１６の矢印に
示すような付勢力が働いてシース内周部が内視鏡外周部
を締め付けて密着し、送水用挿入部溝１５２及び吸引用
挿入部溝１５３を互いに気密に保つことができる。That is, the sheath insertion portion 151 is formed of an elastic member, and the water feeding insertion portion groove 152 and the suction insertion portion groove 15 are formed in the inner peripheral portion of the sheath insertion portion 151.
As shown in FIG. 17, the inner diameter (width in the lateral direction) of the portion where 3 is not formed is set to be slightly smaller than the outer diameter of the endoscope insertion portion 122. By forming the sheath insertion portion 151 in this way, when the endoscope insertion portion 122 is inserted, the elastic force of the sheath insertion portion 151 exerts a biasing force as shown by an arrow in FIG. The outer peripheral portion of the endoscope can be tightened and brought into close contact with each other, and the water supply insertion groove 152 and the suction insertion groove 153 can be kept airtight to each other.
【００６９】また、内視鏡挿入部とシース挿入部との間
の間隙部の気密構造の変形例として、図１８に示すよう
に、シース挿入部１５１ａの内周部における内視鏡挿入
部外周部と接する部分にゴム等の弾性材１６２を設け、
この弾性材１６２によってシース内周部と内視鏡外周部
とを密着させて送水用挿入部溝１５２及び吸引用挿入部
溝１５３の気密を保つようにしても良い。As a modified example of the airtight structure of the gap between the endoscope insertion portion and the sheath insertion portion, as shown in FIG. 18, the outer circumference of the endoscope insertion portion at the inner peripheral portion of the sheath insertion portion 151a. An elastic material 162 such as rubber is provided in a portion contacting the portion,
The inner peripheral portion of the sheath and the outer peripheral portion of the endoscope may be brought into close contact with each other by the elastic material 162 so that the water feeding insertion groove 152 and the suction insertion groove 153 are kept airtight.
【００７０】図１９ないし図２１は本発明の第７実施例
を示し、図１９は内視鏡全体の概略構成説明図、図２０
及び図２１は内視鏡挿入部の拡大説明図であり、図２０
（ａ）は図１９のＡ方向から見た矢視図、図２０（ｂ）
は図１９のＢ−Ｂ線断面図、図２０（ｃ）は図１９のＣ
−Ｃ線断面図、図２１は図２０（ｂ）のＤ−Ｄ線断面図
である。19 to 21 show a seventh embodiment of the present invention, and FIG. 19 is a schematic structural explanatory view of the entire endoscope, FIG.
21 and 21 are enlarged explanatory views of the endoscope insertion portion.
20A is a view seen from the direction A in FIG. 19, FIG.
19 is a cross-sectional view taken along the line BB of FIG. 19, and FIG. 20 (c) is C of FIG.
-C line sectional drawing, FIG. 21: DD sectional view taken on the line of FIG.20 (b).
【００７１】この第７実施例は前記第４実施例の変形例
であり、本実施例は第４実施例におけるシース先端部の
構成を変更した例である。なお、前記第４実施例と同じ
構成部分については、その説明を省略する。The seventh embodiment is a modification of the fourth embodiment, and this embodiment is an example in which the structure of the sheath distal end portion in the fourth embodiment is changed. The description of the same components as those in the fourth embodiment will be omitted.
【００７２】すなわち、図１９ないし図２１に示すよう
に、内視鏡挿入部１２２が挿入されるシース１７０のシ
ース先端部１７１には、開口部１７３が設けられると共
に、内視鏡挿入部先端面１２４に対向して周縁部を覆う
縁部１７２が設けられている。この縁部１７２の一部に
は、図２０（ａ）及び（ｂ）に示すような挿入部外周面
まで連絡する切り欠き部１７４が設けられている。そし
て、この切り欠き部１７４に対向する縁部１７２内側の
一部分に先端間隙部となる先端部溝１７５が設けられ、
先端部溝１７５はシース挿入部１７６内周部に設けられ
た挿入部間隙部となる挿入部溝１７７に連通している。That is, as shown in FIGS. 19 to 21, the sheath distal end 171 of the sheath 170 into which the endoscope insertion portion 122 is inserted is provided with an opening 173 and the distal end surface of the endoscope insertion portion is provided. An edge 172 is provided so as to face 124 and cover the peripheral edge. A cutout portion 174 that communicates with the outer peripheral surface of the insertion portion as shown in FIGS. 20A and 20B is provided in a part of the edge portion 172. Then, a tip end groove 175 serving as a tip gap portion is provided in a part inside the edge portion 172 facing the cutout portion 174,
The tip groove 175 communicates with an insertion groove 177 which is an insertion gap provided in the inner circumference of the sheath insertion portion 176.
【００７３】このようにシース先端部１７１に切り欠き
部１７４を設けて構成することにより、内視鏡挿入部先
端面のカバーガラス等を洗浄する場合に洗浄水等が先端
部溝１７５から図２０（ａ）中の矢印で示すように送出
され、先端部溝１７５からカバーガラス等に吹き付けら
れる洗浄水のうちの余剰分は、先端部溝１７５の反対側
に位置する切り欠き部１７４を通ってシース１７０の外
周部へと流れていくため、カバーガラス上に余分な水滴
が残ってしまう不具合を防止できる。By constructing the notch 174 in the distal end portion 171 of the sheath as described above, when the cover glass or the like on the distal end surface of the endoscope insertion portion is washed, washing water or the like flows from the distal end groove 175 to the end portion groove 175 of FIG. The surplus of the washing water that is sent out as shown by the arrow in (a) and sprayed from the tip groove 175 to the cover glass or the like passes through the notch 174 located on the opposite side of the tip groove 175. Since it flows to the outer peripheral portion of the sheath 170, it is possible to prevent a problem that extra water droplets remain on the cover glass.
【００７４】図２２及び図２３は本発明の第８実施例を
示し、図２２は内視鏡挿入部先端部の断面説明図、図２
３は内視鏡挿入部先端部の拡大説明図であり、図２３
（ａ）は図２２のＡ方向から見た矢視図、図２３（ｂ）
は図２２のＢ−Ｂ線断面図である。22 and 23 show an eighth embodiment of the present invention, and FIG. 22 is a sectional explanatory view of the distal end portion of the endoscope insertion portion, FIG.
FIG. 3 is an enlarged explanatory view of the distal end portion of the endoscope insertion portion.
FIG. 23A is a view seen from the direction A in FIG. 22, FIG.
FIG. 23 is a sectional view taken along line BB of FIG. 22.
【００７５】この第８実施例は前記第６実施例の変形例
であり、本実施例は第６実施例における送水、吸引ため
の間隙部としての溝部の構成を変更した例である。な
お、前記第６実施例と同じ構成部分については、その説
明を省略する。The eighth embodiment is a modification of the sixth embodiment, and this embodiment is an example in which the structure of the groove portion as a gap portion for water supply and suction in the sixth embodiment is changed. The description of the same components as those in the sixth embodiment will be omitted.
【００７６】すなわち、図２２及び図２３に示すよう
に、内視鏡挿入部１２２が挿入されるシース１８０のシ
ース先端部１８１には、開口部１８２が設けられると共
に、内視鏡挿入部先端面１２４に対向して周縁部を覆う
縁部１８３が設けられている。この縁部１８３の内側に
は、上側と下側にそれぞれ先端間隙部としての送水用先
端部溝１８４、吸引用先端部溝１８５が設けられてい
る。また、シース挿入部１８６の内周部には上側と下側
に挿入部間隙部としての送水用挿入部溝１８７、吸引用
挿入部溝１８８が設けられている。この送水用挿入部溝
１８７、吸引用挿入部溝１８８は、シース本体部１８９
からシース先端部１８１まで延設されており、先端側は
それぞれ前記送水用先端部溝１８４、吸引用先端部溝１
８５に連通し、手元側はシース本体部１８９に設けられ
た送水用口金１９０、吸引用口金１９１にそれぞれ連通
している。そして、前記送水用口金１９０、吸引用口金
１９１には、第６実施例と同様にそれぞれ送水手段１３
６と吸引手段１３７（または送気手段１３８）が接続さ
れている。That is, as shown in FIGS. 22 and 23, an opening 182 is provided in the sheath distal end 181 of the sheath 180 into which the endoscope insertion portion 122 is inserted, and the distal end surface of the endoscope insertion portion is provided. An edge 183 is provided so as to face 124 and cover the peripheral edge. Inside the edge portion 183, a water feeding tip groove 184 and a suction tip groove 185 are provided on the upper side and the lower side, respectively, as tip gap portions. Further, an inner peripheral portion of the sheath insertion portion 186 is provided with a water supply insertion portion groove 187 and a suction insertion portion groove 188 as an insertion portion gap portion on the upper side and the lower side. The water supply insertion portion groove 187 and the suction insertion portion groove 188 are provided in the sheath body 189.
From the sheath to the tip portion 181 of the sheath, and the tip side is provided with the water feeding tip groove 184 and the suction tip groove 1 respectively.
85 to the water supply mouthpiece 190 and the suction mouthpiece 191 provided on the sheath body 189. Then, the water supply means 190 and the suction mouthpiece 191 are respectively provided with the water supply means 13 as in the sixth embodiment.
6 and the suction means 137 (or the air supply means 138) are connected.
【００７７】前記シース先端部１８１の開口部１８２
は、図２３（ａ）に示すように、開口部下側の縁部が内
視鏡挿入部先端面１２４のカバーガラス１２５の下側周
縁部を近接して取り囲むように、下側の半径が上側の半
径よりも小さくなっている。一方、前記シース先端部１
８１の縁部１８３内側の上下に設けられた送水用先端部
溝１８４、吸引用先端部溝１８５のうち、下側の吸引用
先端部溝１８５は、上側の送水用先端部溝１８４よりも
幅が大きく、前記開口部１８２の下側の半径が小さい部
分の幅と実質的に同じとなっている。Opening 182 of the sheath tip 181
As shown in FIG. 23A, the lower radius is such that the lower edge of the opening closely surrounds the lower peripheral edge of the cover glass 125 of the endoscope insertion portion distal end surface 124. Is smaller than the radius of. On the other hand, the sheath tip 1
Of the water supply tip groove 184 and the suction tip groove 185 provided on the upper and lower sides inside the edge portion 183 of 81, the lower suction tip groove 185 is wider than the upper water feeding tip groove 184. Is large and is substantially the same as the width of the portion of the lower side of the opening 182 having a small radius.
【００７８】また、送水用挿入部溝１８７、吸引用挿入
部溝１８８は、図２３（ｂ）に示すように、それぞれ連
通する先端部溝１８４、１８５の幅と同じになってお
り、上下で幅が異なるように形成されている。Further, as shown in FIG. 23 (b), the water-feeding insertion groove 187 and the suction insertion groove 188 have the same width as the communicating tip grooves 184 and 185, respectively. The widths are different.
【００７９】このように構成されたシース１８０におい
ては、送水手段１３６から洗浄水が上側の送水用挿入部
溝１８７、送水用先端部溝１８４を経由して送られ、シ
ース先端開口部１８２の上側から内視鏡挿入部先端面の
カバーガラス１２５に吹き付けられる。そして、送水さ
れてカバーガラス上などに残った水滴等は、下側の吸引
用先端部溝１８５、吸引用挿入部溝１８８に連通した吸
引手段１３７により、シース先端開口部１８２の下側か
ら吸引される。したがって、下側の幅の広い吸引用溝に
より、容易に吸引を行うことができる。また、開口部１
８２下側の縁部端部がカバーガラス１２５の下側周縁部
を近接して取り囲んでいるため、より高い吸引圧を発生
させることができ、効率よく吸引することが可能とな
る。In the sheath 180 constructed as described above, the cleaning water is sent from the water supply means 136 through the upper water supply insertion groove 187 and the water supply front end groove 184, and the upper side of the sheath front end opening 182. Is sprayed onto the cover glass 125 on the front end surface of the endoscope insertion portion. Then, the water droplets and the like remaining after being sent on the cover glass are sucked from the lower side of the sheath tip opening 182 by the suction means 137 communicating with the lower suction tip groove 185 and the suction insertion groove 188. To be done. Therefore, suction can be easily performed by the wide suction groove on the lower side. Also, the opening 1
Since the lower edge portion of the lower side 82 closely surrounds the lower peripheral edge of the cover glass 125, a higher suction pressure can be generated and efficient suction can be performed.
【００８０】図２４ないし図２７は本発明の第９実施例
を示し、図２４は内視鏡全体の概略構成説明図、図２５
及び図２６は内視鏡挿入部の拡大説明図であり、図２５
（ａ）は図２４のＡ方向から見た矢視図、図２５（ｂ）
は図２４のＢ−Ｂ線断面図、図２５（ｃ）は図２４のＣ
−Ｃ線断面図、図２６は図２５（ｂ）のＤ−Ｄ線断面
図、図２７はシース先端部の間隙部の変形例を示す説明
図である。24 to 27 show a ninth embodiment of the present invention, FIG. 24 is a schematic structural explanatory view of the entire endoscope, and FIG.
26 and FIG. 26 are enlarged explanatory views of the endoscope insertion portion, and FIG.
25A is a view seen from the direction A in FIG. 24, and FIG.
24 is a sectional view taken along line BB in FIG. 24, and FIG. 25 (c) is C in FIG.
FIG. 26 is a sectional view taken along the line C, FIG. 26 is a sectional view taken along the line DD of FIG. 25B, and FIG. 27 is an explanatory view showing a modified example of the gap portion at the distal end of the sheath.
【００８１】この第９実施例は前記第４実施例の変形例
であり、本実施例は第４実施例における送水、吸引ため
の間隙部の構成を変更した例である。なお、前記第４実
施例と同じ構成部分については、その説明を省略する。The ninth embodiment is a modification of the fourth embodiment, and this embodiment is an example in which the structure of the gap portion for water supply and suction in the fourth embodiment is changed. The description of the same components as those in the fourth embodiment will be omitted.
【００８２】すなわち、図２４ないし図２７に示すよう
に、内視鏡挿入部１２２が挿入されるシース２００のシ
ース先端部２０１には、開口部２０２が設けられると共
に、内視鏡挿入部先端面１２４に対向して周縁部を覆う
縁部２０３が設けられ、この縁部２０３の内側の一部に
は、先端間隙部となる先端部溝２０４が形成されてい
る。また、シース挿入部２０５は、内径が内視鏡挿入部
外径よりも少し大きくなっており、図２５（ｃ）に示す
ようにシース挿入部内周部と内視鏡挿入部外周部との間
に間隙部２０６が形成されている。この間隙部２０６
は、シース本体部２０７からシース先端部２０１まで延
設され、手元側はシース本体部２０７に設けられた流体
用口金２０８に連通し、先端側は前記先端部溝２０４に
連通している。That is, as shown in FIGS. 24 to 27, an opening 202 is provided in the sheath distal end portion 201 of the sheath 200 into which the endoscope insertion portion 122 is inserted, and the distal end surface of the endoscope insertion portion is formed. An edge portion 203 that covers the peripheral edge portion is provided so as to face the edge portion 124, and a tip end groove 204 that serves as a tip end gap portion is formed in a part of the inside of the edge portion 203. In addition, the sheath insertion portion 205 has an inner diameter slightly larger than the outer diameter of the endoscope insertion portion, and as shown in FIG. 25 (c), it is located between the inner periphery of the sheath insertion portion and the outer periphery of the endoscope insertion portion. A gap portion 206 is formed in the gap. This gap 206
Is extended from the sheath main body 207 to the sheath distal end 201, and the proximal side communicates with a fluid mouthpiece 208 provided on the sheath main body 207, and the distal side communicates with the distal end groove 204.
【００８３】また、シース挿入部２０５の先端近傍の一
部に、シースの内周側に突起した凸部２０９が設けられ
ており、シース挿入部２０５と内視鏡挿入部１２２との
周方向における位置関係が常に一定なるように位置規定
が可能となっている。なお、この凸部２０９を複数設け
てシース挿入部２０５に対する内視鏡挿入部１２２の位
置決めを行うようにしても良い。Further, a convex portion 209 protruding toward the inner peripheral side of the sheath is provided at a portion near the distal end of the sheath inserting portion 205, and the sheath inserting portion 205 and the endoscope inserting portion 122 in the circumferential direction. It is possible to specify the position so that the positional relationship is always constant. Note that a plurality of the convex portions 209 may be provided to position the endoscope insertion portion 122 with respect to the sheath insertion portion 205.
【００８４】このように構成されたシース２００におい
ては、内視鏡挿入部先端面での洗浄水等の流れは図２５
（ａ）中の矢印で示すようになり、また、カバーガラス
の表面などに残留した水滴等を吸引する場合、先端部溝
２０４のみならず先端部溝２０４が設けられている縁部
２０３と内視鏡挿入部先端面との間の隙間も含め、開口
部２０２全周からの吸引が可能であるため、効率の良い
吸引を行うことができる。In the sheath 200 having such a structure, the flow of washing water and the like at the distal end surface of the endoscope insertion portion is as shown in FIG.
As shown by the arrow in (a), when water droplets and the like remaining on the surface of the cover glass are sucked, not only the tip groove 204 but also the edge portion 203 provided with the tip groove 204 Since suction can be performed from the entire circumference of the opening 202 including the gap between the distal end surface of the endoscope insertion portion, efficient suction can be performed.
【００８５】なお、シース先端部の先端部溝の変形例と
して、図２７に示すように、シース先端部２０１ａの縁
部の内側に先端部溝２０４ａ，２０４ｂのように２つ以
上に分割した溝を設けても良い。このように先端部溝を
分割することにより、内視鏡挿入部先端面のカバーガラ
スに対する洗浄水等の流れは図２７中の矢印で示すよう
になり、送水時の水の流れを良くして洗浄性を向上させ
ることができ、また、吸引効率を上げることが可能とな
る。As a modification of the distal end groove of the sheath distal end, as shown in FIG. 27, a groove divided into two or more such as distal end grooves 204a and 204b inside the edge of the sheath distal end 201a. May be provided. By dividing the distal end groove in this way, the flow of cleaning water or the like to the cover glass on the distal end surface of the endoscope insertion portion becomes as shown by the arrow in FIG. 27, and the flow of water during water supply is improved. The washability can be improved and the suction efficiency can be improved.
【００８６】ところで、洗浄機構を有する従来の内視鏡
において、洗浄機構が内視鏡本体側に設けられているも
のでは、内視鏡本体に設けられている洗浄機構のスイッ
チ機構部が、洗浄機構がシース側に設けられているもの
にあってはシースに設けられている洗浄機構のスイッチ
機構部が洗浄・消毒し難く、衛生的に使用するのに大変
な労力を必要としていた。また、スイッチ機構部を配設
することにより、内視鏡本体あるいはシースが大型化し
てしまい、操作性を損ねるといった問題があった。By the way, in the conventional endoscope having the cleaning mechanism, if the cleaning mechanism is provided on the endoscope body side, the switch mechanism portion of the cleaning mechanism provided on the endoscope body is cleaned. In the case where the mechanism is provided on the sheath side, the switch mechanism portion of the cleaning mechanism provided on the sheath is difficult to clean and disinfect, which requires a great deal of labor for hygienic use. Further, by disposing the switch mechanism portion, the endoscope main body or the sheath becomes large in size, which causes a problem of impairing operability.
【００８７】このため、以下のように内視鏡を構成する
ことにより、上述の問題を解決することができる。Therefore, the above problem can be solved by configuring the endoscope as follows.
【００８８】図２８は着脱自在なスイッチ機構部を備え
た内視鏡全体の概略構成説明図で、図２９はスイッチ機
構部断面の説明図である。FIG. 28 is an explanatory view of a schematic structure of the entire endoscope having a detachable switch mechanism portion, and FIG. 29 is an explanatory view of a cross section of the switch mechanism portion.
【００８９】これらの図において、符号７０は内視鏡を
示し、この内視鏡７０は、挿入部７１先端にカバーガラ
ス７２が配設され、このカバーガラス７２を通して患部
等の物体を接眼アイピース７３から観察できるようにな
っている。In these figures, reference numeral 70 denotes an endoscope. In this endoscope 70, a cover glass 72 is arranged at the tip of an insertion portion 71, and an object such as a diseased part is brought into contact with an eyepiece eyepiece 73 through the cover glass 72. It can be observed from.
【００９０】前記内視鏡７０の本体部７４には口金７５
が設けられており、前記カバーガラス７２を洗浄するた
めの洗浄チューブ７６が、前記口金７５から前記内視鏡
７０内部のチャンネル７７内に着脱自在に挿通されてい
る。A base 75 is attached to the main body 74 of the endoscope 70.
A cleaning tube 76 for cleaning the cover glass 72 is detachably inserted from the mouthpiece 75 into the channel 77 inside the endoscope 70.
【００９１】前記洗浄チューブ７６の先端には、ノズル
７８が設けられており、このノズル７８から噴出される
送水液またはガスが、前記カバーガラス７２に吹き付け
られ、このカバーガラス７２が洗浄される。A nozzle 78 is provided at the tip of the cleaning tube 76, and the water supply liquid or gas ejected from the nozzle 78 is sprayed onto the cover glass 72 to clean the cover glass 72.
【００９２】また、前記洗浄チューブ７６の前記口金７
５との接続部７９には、送水または送気のためのチュー
ブ８０を開閉する着脱自在のスイッチ機構部８１が設け
られており、このスイッチ機構部８１は、回転部材８２
が偏芯して、軸８３に回動自在に取り付けられている。
さらに、前記チューブ８０の後端側には、送水装置８４
と接続されている。Further, the mouthpiece 7 of the cleaning tube 76
At the connection part 79 with 5 is provided a detachable switch mechanism part 81 for opening and closing a tube 80 for water supply or air supply, and this switch mechanism part 81 comprises a rotating member 82.
Is eccentric and is rotatably attached to the shaft 83.
Further, on the rear end side of the tube 80, a water supply device 84
Connected with.
【００９３】前記構成のスイッチ機構部８１により、回
転部材８２を回転させるとチューブ８０が開口され、送
水液が、送水装置８４から前記チューブ８０および洗浄
チューブ７６内を介してノズル７８から噴出されて、カ
バーガラス７２の汚れ・曇り等を除去する。When the rotating member 82 is rotated by the switch mechanism portion 81 having the above structure, the tube 80 is opened, and the water supply liquid is ejected from the water supply device 84 through the tube 80 and the cleaning tube 76 from the nozzle 78. , The cover glass 72 is cleaned of dirt and cloudiness.
【００９４】次に、図３０はスイッチ機構部の構造をピ
ストン式とした他の実施例を示す。尚、前記実施例と同
じ構成部分については同一の符号を記し、その説明は省
略する。Next, FIG. 30 shows another embodiment in which the structure of the switch mechanism portion is of the piston type. The same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.
【００９５】図中、符号９１はスイッチ機構部を示し、
このスイッチ機構部９１は、ピストン９２と、このピス
トン９２に連結されチューブ８０を開閉する押圧部材９
３と、この押圧部材９３を前記チューブ８０が閉じる方
向に、常時、前記ピストン９２を付勢する弾性部材９４
とから主に構成されている。In the figure, reference numeral 91 indicates a switch mechanism section,
The switch mechanism portion 91 includes a piston 92 and a pressing member 9 that is connected to the piston 92 and opens and closes the tube 80.
3, and an elastic member 94 that constantly urges the piston 92 in a direction in which the tube 80 closes the pressing member 93.
It is mainly composed of and.
【００９６】そして、前記ピストン９２を前記弾性部材
９４の付勢力に抗して押し下げると、前記チューブ８０
が開かれ、送水液が、送水装置８４から前記チューブ８
０および洗浄チューブ７６内を介してノズル７８から噴
出されて、カバーガラス７２の汚れ・曇り等を除去す
る。When the piston 92 is pushed down against the urging force of the elastic member 94, the tube 80
Is opened, and the water supply liquid is supplied from the water supply device 84 to the tube 8
No. 0 and the cleaning tube 76, and the nozzle 78 ejects the dirt and cloudiness of the cover glass 72.
【００９７】また、図３１はスイッチ機構部の構造を電
気スイッチとした他の実施例を示す。尚、上記実施例と
同じ構成部分については同一の符号を記し、その説明は
省略する。FIG. 31 shows another embodiment in which the structure of the switch mechanism section is an electric switch. The same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.
【００９８】図中、符号１０１はスイッチ機構部を示
し、このスイッチ機構部１０１は、電気スイッチであ
り、スイッチボタン１０２を押圧すると、スイッチ１０
３がＯＮして、この信号が信号線１０４によって送気送
水装置１０５に伝送される。この送気送水装置１０５に
はポンプ１０６が設けられており、前記スイッチ１０３
のＯＮ信号により、前記ポンプ１０６が駆動し、送気ま
たは送水が行われる。In the figure, reference numeral 101 indicates a switch mechanism section, and this switch mechanism section 101 is an electric switch, and when the switch button 102 is pressed, the switch 10 is activated.
3 is turned on, and this signal is transmitted to the air / water supply device 105 through the signal line 104. The air / water supply device 105 is provided with a pump 106, and the switch 103 is provided.
In response to the ON signal, the pump 106 is driven to supply air or water.
【００９９】次に、図３２は上述の電気的なスイッチ機
構部を内視鏡本体部に着脱自在に備えた内視鏡全体の概
略構成説明図で、図３３は図３２のＡ−Ａ線断面概略説
明図である。Next, FIG. 32 is a schematic structural explanatory view of the entire endoscope in which the electric switch mechanism section is detachably attached to the endoscope main body section, and FIG. 33 is a line AA of FIG. It is a cross-sectional schematic explanatory drawing.
【０１００】これらの図において、符号１１０は内視鏡
を示し、この内視鏡１１０の本体部１１１に、拡径可能
な取り付け部１１２ａが形成されたスイッチ台１１２を
備えたスイッチ機構部１１３が着脱自在に設けられてい
る。このスイッチ機構部１１３は、電気スイッチであ
り、スイッチボタン１１４を押圧するとＯＮして、この
信号が信号線１１５によって伝送される。そして、この
ＯＮ信号により、送気または送水が行われる。In these drawings, reference numeral 110 denotes an endoscope, and a main body portion 111 of the endoscope 110 is provided with a switch mechanism portion 113 provided with a switch base 112 having a mounting portion 112a capable of expanding its diameter. It is detachably installed. The switch mechanism unit 113 is an electric switch, and is turned on when the switch button 114 is pressed, and this signal is transmitted through the signal line 115. Then, air or water is supplied by this ON signal.
【０１０１】尚、前述の各実施例では、スイッチ機構部
を１つのみ設けた場合について説明したが、複数設けて
（例えば、２つ設け、一方を送水用、他方を送気あるい
は吸引用として）も良い。In each of the above-described embodiments, the case where only one switch mechanism portion is provided has been described. However, a plurality of switch mechanism portions are provided (for example, two are provided, one for water supply and the other for air supply or suction). ) Is also good.
【０１０２】また、内視鏡本体部に着脱自在に設けるス
イッチ機構部は、電気的なものに限定することなく、例
えば、上述した回転部材によるもの（カム機構を応用し
たもの）や、ピストン式のもの等でも良い。The switch mechanism provided detachably on the endoscope main body is not limited to an electrical one, and may be, for example, one using the above-mentioned rotating member (one applying a cam mechanism) or a piston type. It may be one of the above.
【０１０３】このように、内視鏡に対しスイッチ機構部
を着脱自在に設けることにより、スイッチ機構部を交換
方式とすることができ、また、スイッチ機構部を洗浄・
消毒する場合にも、内視鏡とは切り離してスイッチ機構
部のみを洗浄・消毒できるため、衛生的に大変優れた内
視鏡とすることが可能となる。さらに、内視鏡本体ある
いはシースを小型・軽量かつシンプルにでき、操作性を
向上させることができる。As described above, the switch mechanism is detachably provided to the endoscope, so that the switch mechanism can be replaced, and the switch mechanism can be cleaned and washed.
Even when disinfecting, only the switch mechanism part can be washed and disinfected separately from the endoscope, so that the endoscope can be made extremely hygienic. Furthermore, the endoscope body or sheath can be made small, lightweight and simple, and operability can be improved.
【０１０４】次に、洗浄機構として送水手段及び吸引手
段の他の構成例を以下に示す。Next, another configuration example of the water supply means and the suction means as the cleaning mechanism will be shown below.
【０１０５】図３４は洗浄機構の第１の構成例を示した
構成説明図である。FIG. 34 is a structural explanatory view showing a first structural example of the cleaning mechanism.
【０１０６】内視鏡挿入部１２２が挿入されるシース２
１０は、前述の第６実施例と同様に、シース挿入部２１
１の内部に送水用挿入部溝２１４、吸引用挿入部溝２１
５が設けられて構成されている。この送水用挿入部溝２
１４、吸引用挿入部溝２１５は、先端側がシース先端部
２１２に設けられた送水用先端部溝２１６、吸引用先端
部溝２１７にそれぞれ連通する一方、手元側がシース本
体部２１３に設けられた送水用口金２１８、吸引用口金
２１９にそれぞれ連通している。The sheath 2 into which the endoscope insertion portion 122 is inserted
10 is a sheath insertion portion 21 similar to the sixth embodiment.
1 has a water supply insertion groove 214 and a suction insertion groove 21.
5 is provided and configured. This insertion groove 2 for water supply
14, the suction insertion portion groove 215 communicates with the water-feeding tip groove 216 and the suction tip groove 217 provided on the sheath tip portion 212 on the tip side, while the water-feeding portion provided on the sheath body portion 213 on the hand side. The mouthpiece 218 and the suction mouthpiece 219 communicate with each other.
【０１０７】前記送水用口金２１８には送水手段２２０
が、吸引用口金２１９には吸引ポンプを備えた吸引手段
２２１がそれぞれ接続されている。送水手段２２０は、
送水ボトル２２２と、この送水ボトル２２２の周囲に設
けられボトル内の洗浄水を温める加温手段２２３とを備
えている。A water supply means 220 is attached to the water supply mouthpiece 218.
However, suction means 221 equipped with a suction pump are connected to the suction mouthpieces 219, respectively. The water supply means 220 is
The water supply bottle 222 and a heating means 223 provided around the water supply bottle 222 for heating the cleaning water in the bottle are provided.
【０１０８】また、送水手段２２０とシース２１０とは
送水チューブ２２４によって接続され、この送水手段２
２０からシース２１０まで洗浄水を導くための送水チュ
ーブ２２４のシース側近傍には、三方活栓２２５が設け
られている。一方、吸引手段２２１とシース２１０とは
吸引チューブ２２６によって接続され、このシース２１
０から吸引手段２２１へ排水を導くための吸引チューブ
２２６のシース側近傍には、チューブの管路を開閉する
バルブ２２７が設けられている。さらに、送水チューブ
２２４の途中に設けられた三方活栓２２５からは連絡チ
ューブ１２８が延出しており、この連絡チューブ１２８
は前記吸引チューブ２２６のバルブ２２７より吸引手段
２２１側の管路に接続されている。The water supply means 220 and the sheath 210 are connected by a water supply tube 224.
A three-way stopcock 225 is provided near the sheath side of the water supply tube 224 for guiding the wash water from the sheath 20 to the sheath 210. On the other hand, the suction means 221 and the sheath 210 are connected by a suction tube 226.
A valve 227 that opens and closes the conduit of the tube is provided near the sheath side of the suction tube 226 for guiding the drainage from 0 to the suction means 221. Further, a communication tube 128 extends from a three-way stopcock 225 provided in the middle of the water supply tube 224.
Is connected to a pipe line on the suction means 221 side of the suction tube 226 from the valve 227.
【０１０９】ここで、三方活栓２２５の構成を図３５を
参照しながら説明する。図３５において、（ａ）はオフ
の状態でシースと吸引チューブのどちらにも洗浄水が流
れない状態を示し、（ｂ）は洗浄水が連絡チューブを経
て吸引チューブへ流れる状態を示し、（ｃ）は洗浄水が
シースへ流れる状態を示したものである。Here, the structure of the three-way stopcock 225 will be described with reference to FIG. In FIG. 35, (a) shows a state where washing water does not flow to both the sheath and the suction tube in the off state, (b) shows a state where washing water flows to the suction tube via the communication tube, and (c) ) Shows a state in which washing water flows to the sheath.
【０１１０】三方活栓本体２２９内にはピストン２３０
が配設され、このピストン２３０はバネ２３１により上
方向に付勢され、操作しないときは図３５（ａ）の状態
となっている。本体２２９には、送水手段２２０に連通
するチューブ、シース２１０に連通するチューブ、およ
び吸引手段２２１に連通するチューブをそれぞれ接続す
るための口金２３２、２３３、２３４が設けられてい
る。A piston 230 is provided in the main body 229 of the three-way stopcock.
The piston 230 is biased upward by the spring 231 and is in the state of FIG. 35 (a) when not operated. The main body 229 is provided with mouthpieces 232, 233, 234 for respectively connecting a tube communicating with the water supply means 220, a tube communicating with the sheath 210, and a tube communicating with the suction means 221.
【０１１１】ピストン２３０を一段階押し込むと図３５
（ｂ）の状態となり、送水手段２２０が連絡チューブ２
２８及び吸引チューブ２２６に連通し、吸引チューブ２
２６へ洗浄水が流れる。ピストン２３０をさらにもう一
段階押し込むと図３５（ｃ）の状態となり、送水手段２
２０が送水チューブ２２４に連通し、送水チューブ２２
４へ洗浄水が流れる。この状態で送水用溝を介して内視
鏡先端部へ送水することができる。When the piston 230 is pushed in one step, FIG.
In the state of (b), the water supply means 220 is connected to the connecting tube 2.
28 and the suction tube 226, and the suction tube 2
Wash water flows to 26. When the piston 230 is pushed in one more step, the state shown in FIG.
20 communicates with the water supply tube 224, and the water supply tube 22
Wash water flows to 4. In this state, water can be supplied to the distal end portion of the endoscope through the water supply groove.
【０１１２】内視鏡挿入部先端面の洗浄を行う際には、
まず、三方活栓２２５を操作して送水チューブ２２４と
吸引チューブ２２６とを連通させる。すると、加温手段
２２３により体温に温められた洗浄水が送水手段２２０
から流れ出し、連絡チューブ２２８を介して吸引手段２
２１側へと流れる。このとき、三方活栓の操作前は送水
チューブ自体が室温と同じであるため、この操作の前に
送水チューブ２２４内に残っていた洗浄水や、操作直後
に送水チューブ２２４内を流れた洗浄水は、送水チュー
ブに熱を奪われて体温から室温近くまで下がる。しか
し、ある程度洗浄水を流し続けると、送水チューブ２２
４が温められるため、流れる洗浄水の温度が送水ボトル
２２２内の体温に温められた洗浄水と同じ温度になる。
この後、再び三方活栓２２５を操作して、送水チューブ
２２４とシース２１０とを連通させ、洗浄水をシース２
１０の洗浄用溝に流し込む。すると、洗浄水がシース先
端部２１２まで送られ、内視鏡挿入部先端面へ吹き付け
られてカバーガラス等が洗浄される。When cleaning the distal end surface of the endoscope insertion portion,
First, the three-way stopcock 225 is operated to connect the water supply tube 224 and the suction tube 226. Then, the wash water heated to the body temperature by the heating means 223 is supplied to the water supply means 220.
From the suction means 2 through the connecting tube 228.
It flows to the 21st side. At this time, since the water supply tube itself is the same as room temperature before the operation of the three-way stopcock, the cleaning water remaining in the water supply tube 224 before this operation and the cleaning water flowing in the water supply tube 224 immediately after the operation are , The water is taken away by the water tube, and the temperature drops from body temperature to near room temperature. However, if the flush water is kept flowing to some extent, the water supply tube 22
Since 4 is warmed, the temperature of the wash water flowing becomes the same temperature as the wash water warmed to the body temperature in the water supply bottle 222.
After that, the three-way stopcock 225 is operated again to connect the water supply tube 224 and the sheath 210 to each other, and wash water is supplied to the sheath 2
Pour into the cleaning groove of 10. Then, the cleaning water is sent to the sheath distal end portion 212 and is sprayed onto the distal end surface of the endoscope insertion portion to clean the cover glass and the like.
【０１１３】このように洗浄機構を構成することによ
り、シース内に体温に温められた洗浄水のみを送水する
ことができ、冷たい洗浄水で内視鏡挿入部を冷やすこと
がないので、内視鏡のレンズが曇ってしまうことを防止
でき、良好な視野を確保することができる。By configuring the cleaning mechanism in this way, only the cleaning water warmed to the body temperature can be fed into the sheath, and the endoscope insertion part is not cooled by cold cleaning water. It is possible to prevent the lens of the mirror from becoming cloudy and ensure a good visual field.
【０１１４】図３６は洗浄機構の第２の構成例を示した
構成説明図である。FIG. 36 is a structural explanatory view showing a second structural example of the cleaning mechanism.
【０１１５】第２の構成例は前記第１の構成例の変形例
であり、洗浄水の温度検知手段を設けたものである。な
お、第１の構成例と同様の構成要素については説明を省
略する。The second structural example is a modified example of the first structural example, in which the temperature detecting means for washing water is provided. The description of the same components as those in the first configuration example will be omitted.
【０１１６】送水手段２２０に接続された送水チューブ
２２４のシース側近傍には、三方活栓２３５が設けら
れ、この三方活栓２３５の送水手段側近傍に洗浄水の温
度を検知する温度センサ２３６が送水チューブ２２４の
周囲を取り囲むように設けられている。温度センサ２３
６は、信号ケーブル２３７を介して三方活栓２３５に接
続されており、温度検知結果が三方活栓２３５に入力さ
れるようになっている。A three-way stopcock 235 is provided near the sheath side of the water supply tube 224 connected to the water supply means 220, and a temperature sensor 236 for detecting the temperature of the wash water is provided near the water supply means side of the three-way stopcock 235. It is provided so as to surround the periphery of 224. Temperature sensor 23
6 is connected to the three-way stopcock 235 via a signal cable 237, and the temperature detection result is input to the three-way stopcock 235.
【０１１７】また、三方活栓２３５の出口側口金には、
流入チューブ２３８が接続されており、流入チューブ２
３８の他端はシース２１０に設けられた送水バルブ２３
９を介して送水用口金２１８に接続されている。一方、
吸引手段２２１に接続された吸引チューブ２２６は、シ
ース２１０に設けられた吸引バルブ２４０を介して吸引
用口金２１９に接続されている。Also, the outlet side cap of the three-way stopcock 235 is
The inflow tube 238 is connected to the inflow tube 2
The other end of 38 is the water supply valve 23 provided on the sheath 210.
It is connected to the water supply mouthpiece 218 via 9. on the other hand,
The suction tube 226 connected to the suction means 221 is connected to the suction mouthpiece 219 via a suction valve 240 provided on the sheath 210.
【０１１８】この第２の構成例では、温度センサ２３６
によって、送水手段２２０から送られる洗浄水の温度が
検知され、検知された洗浄水の温度が体温以上か以下か
によって三方活栓２３５が切り換わる。In this second configuration example, the temperature sensor 236
The temperature of the wash water sent from the water supply means 220 is detected, and the three-way stopcock 235 is switched depending on whether the detected temperature of the wash water is above or below the body temperature.
【０１１９】ここで、三方活栓２３５は、検知された洗
浄水の温度が体温以下の場合は、送水チューブ２２４と
連絡チューブ２２８とを連通させ、体温以上の場合は、
送水チューブ２２４と流入チューブ２３８とを連通させ
るように動作する。Here, the three-way stopcock 235 connects the water supply tube 224 and the communication tube 228 when the detected temperature of the wash water is below the body temperature, and when the detected temperature is above the body temperature,
The water supply tube 224 and the inflow tube 238 operate so as to communicate with each other.
【０１２０】このように洗浄機構を構成することによ
り、術者は、手術中にその都度洗浄水の温度を確認する
ことなく、シース２１０に設けられた送水バルブ２３９
と吸引バルブ２４０を操作するのみで、常に体温以上の
温度の洗浄水を内視鏡挿入部先端面に吹き付けて洗浄す
ることができる。By constructing the cleaning mechanism in this way, the operator does not need to check the temperature of the cleaning water during each operation, and the water supply valve 239 provided on the sheath 210 is not required.
By simply operating the suction valve 240, the washing water having a temperature equal to or higher than the body temperature can be sprayed onto the distal end surface of the endoscope insertion portion for washing.
【０１２１】図３７は洗浄機構の第３の構成例を示した
構成説明図である。FIG. 37 is a structural explanatory view showing a third structural example of the cleaning mechanism.
【０１２２】第３の構成例では、シース２１０の本体に
設けられている送水バルブ２３９、吸引バルブ２４０
に、それぞれ送水手段２２０に連通した送水チューブ２
４１、吸引手段２２１に連通した吸引チューブ２４２が
接続されている。そして、送水手段２２０及び送水チュ
ーブ２４１は、内部の洗浄水を温めるための加温チュー
ブ２４３により外周部が覆われており、この加温チュー
ブ２４３には洗浄水を体温の温度に温める加温手段２４
４が接続されている。In the third configuration example, the water supply valve 239 and the suction valve 240 provided on the main body of the sheath 210.
And the water supply tube 2 that communicates with the water supply means 220, respectively.
41, and a suction tube 242 communicating with the suction means 221 is connected. Then, the water supply means 220 and the water supply tube 241 are covered at their outer peripheral portions by a heating tube 243 for warming the washing water inside, and the heating tube 243 warms the washing water to the body temperature. 24
4 is connected.
【０１２３】このように加温手段を設けて洗浄機構を構
成することにより、シース２１０内に常に体温に温めら
れた洗浄水のみを送水することができ、前記第１及び第
２の構成例と同様に内視鏡のレンズが曇ることを防止で
きる。By thus constructing the washing mechanism by providing the heating means, it is possible to always send only the washing water warmed to the body temperature into the sheath 210, and the first and second configuration examples. Similarly, it is possible to prevent the lens of the endoscope from becoming cloudy.
【０１２４】また、前述のような洗浄機構を設ける代わ
りに、挿入部先端部を温めて内視鏡のレンズの曇りを防
止することもできる。Further, instead of providing the above-mentioned cleaning mechanism, it is possible to prevent the fog of the lens of the endoscope by warming the tip of the insertion section.
【０１２５】レンズ曇り防止手段を備えた第１の例を図
３８に示す。この第１の例は、挿入部先端部の洗浄水噴
出口を照明光によって加温可能なようにシース先端部を
構成した例である。FIG. 38 shows a first example provided with a lens fogging preventing means. The first example is an example in which the sheath distal end portion is configured so that the cleaning water ejection port at the distal end portion of the insertion portion can be heated by illumination light.
【０１２６】内視鏡挿入部１２２が挿入されるシース２
５０のシース先端部２５１には、開口部２５２が設けら
れ、この開口部２５２より内視鏡挿入部先端面のライト
ガイド出射端面２５３およびカバーガラス２５４が露呈
しており、この開口部２５２を通して被検部位の照明及
び観察が可能となっている。Sheath 2 into which the endoscope insertion portion 122 is inserted
An opening 252 is provided in the sheath distal end 251 of the sheath 50, and the light guide emission end surface 253 and the cover glass 254 at the distal end surface of the endoscope insertion portion are exposed from the opening 252, and the cover 254 is exposed through the opening 252. It is possible to illuminate and observe the inspection site.
【０１２７】また、シース先端部２５１には、内視鏡挿
入部先端面に対向して周縁部を覆う縁部２５５が設けら
れており、この縁部２５５の内側の一部には先端間隙部
となる先端部溝２５７が設けられ、先端部溝２５７はシ
ース挿入部内部に設けられた間隙部２５６に連通してい
る。送水手段からシース内に送られてきた洗浄水は、前
記間隙部２５６、先端部溝２５７を経て内視鏡挿入部先
端面に吹き付けられるようになっている。Further, the sheath distal end portion 251 is provided with an edge portion 255 facing the distal end surface of the endoscope insertion portion and covering the peripheral edge portion, and a distal end gap portion is provided inside a part of the edge portion 255. A distal end groove 257 is provided, and the distal end groove 257 communicates with a gap portion 256 provided inside the sheath insertion portion. The cleaning water sent from the water supply means into the sheath is sprayed onto the distal end surface of the endoscope insertion portion through the gap 256 and the distal end groove 257.
【０１２８】なお、シース先端部２５１における開口部
２５２の縁部２５５は、その一部に前記ライトガイド出
射端面からの照明光２５８が当たるように開口部２５２
及び縁部２５５の寸法が設定されている。The edge portion 255 of the opening 252 in the sheath distal end portion 251 has an opening 252 so that the illumination light 258 from the light guide emission end face hits a part thereof.
The dimensions of the edge portion 255 are set.
【０１２９】このようにシース先端部を構成した内視鏡
においては、ライトガイド出射端面２５３より出射され
た被検部位を照明する照明光の一部が、開口部２５２の
縁部２５５の一部分に当たり、照明光によって開口部２
５２が温められる。さらにこの照明光の熱により、先端
部溝２５７端部より噴出する洗浄水と内視鏡挿入部先端
部とが温められる。In the endoscope having the sheath distal end portion as described above, part of the illumination light emitted from the light guide emission end surface 253 and illuminating the region to be inspected hits a part of the edge portion 255 of the opening 252. , Opening 2 by illumination light
52 is warmed. Further, the heat of the illumination light warms the washing water ejected from the end of the tip groove 257 and the tip of the endoscope insertion portion.
【０１３０】したがって、冷たい洗浄水で内視鏡挿入部
先端面を冷やすことがないので、内視鏡のレンズが曇る
ことを防止できる。Therefore, since the tip end surface of the endoscope insertion portion is not cooled with cold washing water, it is possible to prevent the lens of the endoscope from becoming cloudy.
【０１３１】このように照明光によって挿入部先端部を
加温可能にした構成は、送水ノズルを持った内視鏡に適
用することができる。挿入部先端部の洗浄水噴出口を照
明光によって加温可能なように構成した内視鏡先端部の
構成例を図３９に示す。The structure in which the distal end of the insertion portion can be heated by the illumination light as described above can be applied to an endoscope having a water supply nozzle. FIG. 39 shows an example of the configuration of the distal end portion of the endoscope in which the cleaning water ejection port at the distal end portion of the insertion portion can be heated by illumination light.
【０１３２】内視鏡挿入部２６０には、送水等を行うた
めのチャンネル２６１が設けられ、このチャンネル２６
１に連通する送水ノズル２６２が挿入部先端部に設けら
れている。送水ノズル２６２は、その一部にライトガイ
ド出射端面２５３からの照明光２５８が当たるように配
設されている。The endoscope insertion portion 260 is provided with a channel 261 for supplying water or the like.
1 is provided at the tip of the insertion portion. The water supply nozzle 262 is arranged so that the illumination light 258 from the light guide emission end face 253 strikes a part thereof.
【０１３３】このように内視鏡先端部を構成することに
より、ライトガイド出射端面２５３より出射された被検
部位を照明する照明光の一部が送水ノズル２６２に当た
り、照明光によって送水ノズル２６２が温められ、さら
にこの照明光の熱によりノズルから噴出する洗浄水が温
められる。したがって、洗浄水で内視鏡挿入部先端面を
冷やすことがないので、内視鏡のレンズが曇ることを防
止できる。なお、送水ノズルは、内視鏡先端部に固定さ
れているものでも、内視鏡のチャンネルに着脱自在に挿
入され内視鏡先端部で位置決め固定されるものであって
も良い。By configuring the distal end portion of the endoscope in this way, a part of the illumination light emitted from the light guide emission end surface 253 and illuminating the test site hits the water supply nozzle 262, and the water supply nozzle 262 is illuminated by the illumination light. The washing water is heated, and the heat of the illumination light further warms the washing water ejected from the nozzle. Therefore, it is possible to prevent the lens of the endoscope from becoming fogged because the tip surface of the endoscope insertion portion is not cooled by the wash water. The water supply nozzle may be fixed to the distal end of the endoscope, or may be removably inserted into the channel of the endoscope and positioned and fixed at the distal end of the endoscope.
【０１３４】図４０及び図４１はレンズ曇り防止手段を
備えた第２の例を示したものであり、図４０は挿入部先
端部の正面図、図４１は図４０のＡ−Ａ断面図である。
この第２の例は、挿入部先端部を温めるための発熱体を
設けた例である。40 and 41 show a second example provided with a lens fogging preventing means. FIG. 40 is a front view of the tip of the insertion portion, and FIG. 41 is a sectional view taken along the line AA of FIG. is there.
The second example is an example in which a heating element for heating the distal end portion of the insertion portion is provided.
【０１３５】内視鏡挿入部１２２が挿入されるシース２
７０のシース先端部２７１には、開口部２７２が設けら
れ、この開口部２７２より内視鏡挿入部先端面のライト
ガイド出射端面２５３およびカバーガラス２５４が露呈
しており、開口部２７２を通して被検部位の照明と観察
が可能になっている。The sheath 2 into which the endoscope insertion portion 122 is inserted
An opening 272 is provided in the sheath distal end portion 271 of 70, and the light guide emission end surface 253 and the cover glass 254 at the distal end surface of the endoscope insertion portion are exposed from the opening portion 272, and the inspection is performed through the opening portion 272. Illumination and observation of the site are possible.
【０１３６】また、シース先端部２７１には、送水ノズ
ル２７３と吸引ノズル２７４とが設けられると共に、こ
れらのノズルの間の近傍に熱電対等の発熱体２７５が設
けられている。この発熱体２７５は、挿入部内に配設さ
れた電線２７６が接続されており、電線２７６によって
光源装置等から電源が供給されて発熱するようになって
いる。Further, a water supply nozzle 273 and a suction nozzle 274 are provided at the sheath tip portion 271, and a heating element 275 such as a thermocouple is provided near these nozzles. The heating element 275 is connected to an electric wire 276 arranged in the insertion portion, and is supplied with power from a light source device or the like by the electric wire 276 to generate heat.
【０１３７】前記のように構成されたシース２７０を有
する内視鏡の使用時には、発熱体２７５に電線２７６を
介して電源を供給し、発熱体２７５を発熱させる。これ
により、シース先端部と内視鏡挿入部先端部とが温めら
れる。したがって、この第２の例によれば、使用時にシ
ース先端部と内視鏡挿入部先端部とを温めることが可能
になり、内視鏡のレンズが曇ることを防止できる。When the endoscope having the sheath 270 constructed as described above is used, power is supplied to the heating element 275 via the electric wire 276 to cause the heating element 275 to generate heat. This warms the sheath distal end and the endoscope insertion portion distal end. Therefore, according to the second example, it is possible to warm the sheath distal end portion and the endoscope insertion portion distal end portion during use, and it is possible to prevent the lens of the endoscope from becoming cloudy.
【０１３８】なお、送水ノズル２７３及び吸引ノズル２
７４、あるいはシース先端部２７１自体を発熱体で構成
しても良い。The water supply nozzle 273 and the suction nozzle 2
74, or the sheath tip portion 271 itself may be constituted by a heating element.
【０１３９】図４２及び図４３はレンズ曇り防止手段を
備えた第３の例を示したものであり、図４２は挿入部先
端部の正面図、図４３は図４２のＡ−Ａ断面図である。
この第３の例は、曇り止め材注入手段を設けた例であ
る。42 and 43 show a third example provided with a lens fogging preventing means, FIG. 42 is a front view of the tip of the insertion portion, and FIG. 43 is a sectional view taken along the line AA of FIG. is there.
The third example is an example in which an anti-fog material injection means is provided.
【０１４０】内視鏡挿入部１２２が挿入されるシース２
８０のシース挿入部２８２には、送水用あるいは吸引用
のチャンネルとは別のチャンネル２８３が設けられてい
る。また、シース先端部２８１には、前記チャンネル２
８３に連通するノズル２８４が送水ノズル２７３と吸引
ノズル２７４との間の近傍に配設されている。さらに、
シース本体部２８５には、バルブ２８６と口金２８７と
が設けられ、前記チャンネル２８３の手元側に連通して
いる。The sheath 2 into which the endoscope insertion portion 122 is inserted
The sheath insertion portion 282 of 80 is provided with a channel 283 different from the channel for water supply or suction. In addition, the channel 2 is provided at the sheath distal end 281.
A nozzle 284 communicating with 83 is disposed near the water supply nozzle 273 and the suction nozzle 274. further,
A valve 286 and a base 287 are provided on the sheath body 285 and communicate with the proximal side of the channel 283.
【０１４１】前記のように構成されたシース２８０は、
口金２８７より曇り止め材を流し込み、バルブ２８６を
開閉してシース先端部２８１のノズル２８４から内視鏡
挿入部先端面のカバーガラス２５４に吹き付けられるよ
うになっている。このように挿入部先端面に曇り止め材
を吹き付けることによって、内視鏡のレンズの曇りを防
止することが可能になる。The sheath 280 constructed as described above is
The anti-fog material is poured from the base 287, the valve 286 is opened and closed, and sprayed from the nozzle 284 of the sheath distal end portion 281 to the cover glass 254 on the distal end surface of the endoscope insertion portion. By spraying the anti-fog material on the distal end surface of the insertion portion in this manner, it becomes possible to prevent the lens of the endoscope from being fogged.
【０１４２】また、内視鏡使用前に光源装置の出射光を
用いて内視鏡先端部を温めることによって、内視鏡のレ
ンズの曇りを防止することもできる。Further, it is possible to prevent the lens of the endoscope from becoming cloudy by warming the tip of the endoscope by using the light emitted from the light source device before using the endoscope.
【０１４３】光源装置の出射光を用いたレンズ曇り防止
手段の構成例を図４４及び図４５に示す。44 and 45 show examples of the structure of the lens fogging preventing means using the light emitted from the light source device.
【０１４４】一般に、手術前の機材の準備や、麻酔、患
部の消毒、および内視鏡を体腔内に挿入するための経路
の確保操作等の際には、光源装置やライトガイドおよび
内視鏡は必要ない。よって、本例では、このときの光源
装置を用いて、光源装置に接続されたライトガイドケー
ブルの出射端部を内視鏡先端部に接続し、光源装置から
の白色光によって内視鏡先端部を温めるようにする。Generally, during preparation of equipment before surgery, anesthesia, disinfection of an affected area, and operation of securing a route for inserting an endoscope into a body cavity, a light source device, a light guide, and an endoscope are used. Is not necessary. Therefore, in this example, by using the light source device at this time, the emission end of the light guide cable connected to the light source device is connected to the endoscope distal end portion, and the endoscope distal end portion is irradiated with white light from the light source device. To warm up.
【０１４５】内視鏡挿入部１２２が挿入されるシース２
９０のシース先端部２９１には、前述の実施例と同様に
開口部が設けられ、この開口部より突出して口金２９２
が設けられている。この口金２９２に光源装置２９５に
接続されたライトガイドケーブル２９３の出射端側接続
部２９４を接続し、ライトガイドケーブル２９３を介し
て、光源装置２９５からの白色光を内視鏡挿入部先端面
１２４に当てる。この光源装置からの白色光により、内
視鏡先端部を温めることができ、内視鏡の視野を妨げる
原因となる内視鏡のレンズの曇りを防止することが可能
になる。The sheath 2 into which the endoscope insertion portion 122 is inserted
The sheath distal end portion 291 of 90 is provided with an opening similar to the above-described embodiment, and the base 292 projects from this opening.
Is provided. The light emitting device 295 is connected to the emission end side connection portion 294 of the light guide cable 293 connected to the light source device 295, and the white light from the light source device 295 is passed through the light guide cable 293 to the end surface 124 of the endoscope insertion portion. Apply to. The white light from the light source device can warm the distal end portion of the endoscope, and it is possible to prevent the lens of the endoscope from being fogged, which causes obstruction of the field of view of the endoscope.
【０１４６】また、本例では内視鏡による観察、処置時
の準備段階である内視鏡使用前に先端部を温めてレンズ
の曇り防止を行うため、時間的に効率が良く、また、レ
ンズ曇り防止手段としてスコープヒータ等の特殊な器具
や高価な装置は必要ないので、手術場内の器材が多くな
ることを防げると共に、術者に対して特別に経済的な負
担をかけることもない。Further, in this example, since the lens is prevented from being fogged by warming the distal end portion before the endoscope is used for observation and treatment at the time of preparation by the endoscope, the time is efficient and Since no special instrument such as a scope heater or an expensive device is required as a means for preventing fogging, it is possible to prevent the number of equipments in the operating room from increasing, and it does not impose a special financial burden on the operator.
【０１４７】また、光源装置の出射光を用いたレンズ曇
り防止手段の変形例として、図４６に示すように、シー
ス挿入部内に熱伝導物質から成る先端部が塞がれたチュ
ーブ２９６を配置して構成することもできる。このよう
に、ライトガイドケーブルからの照明光がこのチューブ
２９６の先端面に当たるようにすることによって、まず
チューブを照明光で温めて、温められたチューブで内視
鏡先端部および内視鏡挿入部を温めるようにしても良
い。この変形例の構成により、ライトガイドの光が直接
当たることによる内視鏡先端面の接着剤の変質とか内視
鏡先端面に付着している汚れの焦げが先端面に付着する
などの不具合を防止できる。As a modified example of the lens fogging preventing means using the light emitted from the light source device, as shown in FIG. 46, a tube 296 having a distal end made of a heat conductive material is disposed inside the sheath insertion portion. It can also be configured. In this way, the illumination light from the light guide cable impinges on the distal end surface of the tube 296, so that the tube is first heated by the illumination light, and the warmed tube is used for the endoscope distal end portion and the endoscope insertion portion. May be warmed. With the configuration of this modification, there is a problem such as deterioration of the adhesive agent on the distal end surface of the endoscope due to direct light from the light guide or scorching of dirt attached to the distal end surface of the endoscope. It can be prevented.
【０１４８】[0148]
【発明の効果】以上説明したように本発明によれば、送
水管路に連結し送水チャンネルを介してノズルから内視
鏡挿入部先端を洗浄する洗浄手段と、上記内視鏡挿入部
を挿入するシースと、このシースに形成した吸引管路に
連結する吸引手段とを備えた内視鏡において、上記シー
スの先端内側に形成した縁部の内面と上記内視鏡挿入部
先端面との間の先端間隙部と、上記シース内面と上記内
視鏡挿入部外面との間に上記先端間隙部に連通すると共
に上記吸引管路に連通する挿入部間隙部とを形成し、吸
引により内視鏡挿入部先端の送水液を完全に除去するこ
とができるため、良好な観察視野を確保することが可能
となる。As described above, according to the present invention, the cleaning means for cleaning the tip of the endoscope insertion part from the nozzle through the water supply channel connected to the water supply conduit and the endoscope insertion part are inserted. An endoscope having a sheath and a suction means connected to a suction conduit formed in the sheath, between an inner surface of an edge portion formed inside the distal end of the sheath and a distal end surface of the endoscope insertion portion. A distal end gap portion, and an insertion portion gap portion communicating with the distal end gap portion and communicating with the suction conduit between the inner surface of the sheath and the outer surface of the endoscope insertion portion, and the endoscope is formed by suction. Since the water supply liquid at the tip of the insertion portion can be completely removed, it is possible to secure a good observation visual field.
【図１】本発明の第１実施例に係る内視鏡全体の概略構
成説明図FIG. 1 is a schematic configuration explanatory view of an entire endoscope according to a first embodiment of the present invention.
【図２】本発明の第１実施例に係る内視鏡挿入部先端部
の拡大説明図FIG. 2 is an enlarged explanatory view of the distal end portion of the endoscope insertion portion according to the first embodiment of the present invention.
【図３】本発明の第１実施例に係る内視鏡の先端側より
みた内視鏡挿入部の説明図FIG. 3 is an explanatory view of an endoscope insertion portion viewed from the distal end side of the endoscope according to the first embodiment of the present invention.
【図４】本発明の第２実施例に係る内視鏡全体の概略構
成説明図FIG. 4 is a schematic configuration explanatory view of an entire endoscope according to a second embodiment of the present invention.
【図５】本発明の第２実施例に係る内視鏡の先端側より
みた内視鏡挿入部の説明図FIG. 5 is an explanatory view of an endoscope insertion portion viewed from the distal end side of the endoscope according to the second embodiment of the present invention.
【図６】本発明の第３実施例に係る内視鏡挿入部先端部
の拡大説明図FIG. 6 is an enlarged explanatory view of the distal end portion of the endoscope insertion portion according to the third embodiment of the present invention.
【図７】本発明の第３実施例に係る内視鏡の先端側より
みた内視鏡挿入部の説明図FIG. 7 is an explanatory diagram of an endoscope insertion portion viewed from the distal end side of the endoscope according to the third embodiment of the present invention.
【図８】本発明の第４実施例に係る内視鏡全体の概略構
成説明図FIG. 8 is a schematic configuration explanatory view of an entire endoscope according to a fourth embodiment of the present invention.
【図９】本発明の第４実施例に係る内視鏡挿入部の拡大
説明図であり、図９（ａ）は図８のＡ方向から見た矢視
図、図９（ｂ）は図８のＢ−Ｂ線断面図、図９（ｃ）は
図８のＣ−Ｃ線断面図9A and 9B are enlarged explanatory views of an endoscope insertion portion according to a fourth embodiment of the present invention, FIG. 9A is a view seen from the direction A of FIG. 8, and FIG. 8 is a sectional view taken along line BB of FIG. 8, and FIG. 9C is a sectional view taken along line CC of FIG.
【図１０】本発明の第４実施例に係る内視鏡挿入部の変
形例の断面説明図FIG. 10 is a sectional explanatory view of a modified example of the endoscope insertion portion according to the fourth embodiment of the present invention.
【図１１】本発明の第５実施例に係る内視鏡挿入部先端
部の断面説明図FIG. 11 is a cross-sectional explanatory view of the distal end portion of the endoscope insertion portion according to the fifth embodiment of the present invention.
【図１２】本発明の第５実施例に係る内視鏡挿入部先端
部の拡大説明図であり、図１２（ａ）は図１１のＡ方向
から見た矢視図、図１２（ｂ）は図１１のＢ−Ｂ線断面
図12A and 12B are enlarged explanatory views of the distal end portion of the endoscope insertion portion according to the fifth embodiment of the present invention, FIG. 12A being a view seen from the direction A in FIG. 11, and FIG. 11 is a sectional view taken along the line BB of FIG.
【図１３】本発明の第５実施例に係る内視鏡挿入部先端
部の拡大説明図であり、図１２（ｂ）のＣ−Ｃ線断面図FIG. 13 is an enlarged explanatory view of the distal end portion of the endoscope insertion portion according to the fifth embodiment of the invention, which is a sectional view taken along the line CC of FIG. 12 (b).
【図１４】本発明の第６実施例に係る内視鏡全体の概略
構成説明図FIG. 14 is a schematic configuration explanatory view of the entire endoscope according to a sixth embodiment of the present invention.
【図１５】本発明の第６実施例に係る内視鏡挿入部の拡
大説明図であり、図１５（ａ）は図１４のＡ方向から見
た矢視図、図１５（ｂ）は図１４のＢ−Ｂ線断面図、図
１５（ｃ）は図１４のＣ−Ｃ線断面図15A and 15B are enlarged explanatory views of the endoscope insertion portion according to the sixth embodiment of the present invention, FIG. 15A is a view seen from the direction A of FIG. 14, and FIG. 14 is a sectional view taken along the line BB of FIG. 14, and FIG. 15C is a sectional view taken along the line CC of FIG.
【図１６】本発明の第６実施例に係る内視鏡挿入部とシ
ース挿入部との間の間隙部の気密構造を説明する図であ
り、内視鏡を挿入した状態のシース挿入部の断面説明図FIG. 16 is a view for explaining the airtight structure of the gap between the endoscope insertion portion and the sheath insertion portion according to the sixth embodiment of the present invention, showing the sheath insertion portion with the endoscope inserted. Cross section explanatory diagram
【図１７】本発明の第６実施例に係る内視鏡挿入部とシ
ース挿入部との間の間隙部の気密構造を説明する図であ
り、内視鏡を挿入していない状態のシース挿入部の断面
説明図FIG. 17 is a view for explaining the airtight structure of the gap portion between the endoscope insertion portion and the sheath insertion portion according to the sixth embodiment of the present invention, in which the sheath is inserted without the endoscope being inserted. Explanatory drawing of section
【図１８】本発明の第６実施例に係る内視鏡挿入部とシ
ース挿入部との間の間隙部の気密構造を説明する図であ
り、間隙部の気密構造の変形例を示す断面説明図FIG. 18 is a view for explaining the airtight structure of the gap between the endoscope insertion part and the sheath insertion part according to the sixth embodiment of the present invention, and is a cross-sectional view showing a modified example of the airtight structure of the gap. Figure
【図１９】本発明の第７実施例に係る内視鏡全体の概略
構成説明図FIG. 19 is a schematic configuration explanatory diagram of an entire endoscope according to a seventh embodiment of the present invention.
【図２０】本発明の第７実施例に係る内視鏡挿入部の拡
大説明図であり、図２０（ａ）は図１９のＡ方向から見
た矢視図、図２０（ｂ）は図１９のＢ−Ｂ線断面図、図
２０（ｃ）は図１９のＣ−Ｃ線断面図20 is an enlarged explanatory view of an endoscope insertion portion according to a seventh embodiment of the present invention, FIG. 20 (a) is a view seen from the direction A in FIG. 19, and FIG. 20 (b) is a drawing. 19 is a sectional view taken along line BB of FIG. 19, and FIG. 20C is a sectional view taken along line CC of FIG.
【図２１】本発明の第７実施例に係る内視鏡挿入部の拡
大説明図であり、図２０（ｂ）のＤ−Ｄ線断面図FIG. 21 is an enlarged explanatory view of the endoscope insertion portion according to the seventh embodiment of the present invention, and is a sectional view taken along line DD of FIG. 20 (b).
【図２２】本発明の第８実施例に係る内視鏡挿入部先端
部の断面説明図FIG. 22 is a cross-sectional explanatory view of the distal end portion of the endoscope insertion portion according to the eighth embodiment of the present invention.
【図２３】本発明の第８実施例に係る内視鏡挿入部先端
部の拡大説明図であり、図２３（ａ）は図２２のＡ方向
から見た矢視図、図２３（ｂ）は図２２のＢ−Ｂ線断面
図23 is an enlarged explanatory view of the distal end portion of the endoscope insertion portion according to the eighth embodiment of the present invention, FIG. 23 (a) is a view seen from the direction A in FIG. 22, and FIG. 23 (b). 22 is a sectional view taken along the line BB of FIG.
【図２４】本発明の第９実施例に係る内視鏡全体の概略
構成説明図FIG. 24 is a schematic structural explanatory view of an entire endoscope according to a ninth embodiment of the present invention.
【図２５】本発明の第９実施例に係る内視鏡挿入部の拡
大説明図であり、図２５（ａ）は図２４のＡ方向から見
た矢視図、図２５（ｂ）は図２４のＢ−Ｂ線断面図、図
２５（ｃ）は図２４のＣ−Ｃ線断面図25 is an enlarged explanatory view of an endoscope insertion portion according to a ninth embodiment of the present invention, FIG. 25 (a) is an arrow view seen from the direction A of FIG. 24, and FIG. 24 is a sectional view taken along line BB of FIG. 24, and FIG. 25C is a sectional view taken along line CC of FIG.
【図２６】本発明の第９実施例に係る内視鏡挿入部の拡
大説明図であり、図２５（ｂ）のＤ−Ｄ線断面図FIG. 26 is an enlarged explanatory view of the endoscope insertion portion according to the ninth embodiment of the present invention, which is a sectional view taken along the line DD of FIG. 25 (b).
【図２７】本発明の第９実施例に係るシース先端部の間
隙部の変形例を示す説明図FIG. 27 is an explanatory view showing a modified example of the gap portion of the sheath distal end portion according to the ninth embodiment of the present invention.
【図２８】着脱自在なスイッチ機構部を備えた内視鏡全
体の概略構成説明図FIG. 28 is a schematic configuration explanatory diagram of the entire endoscope including a detachable switch mechanism section.
【図２９】スイッチ機構部断面の説明図FIG. 29 is an explanatory view of a cross section of a switch mechanism section.
【図３０】ピストン式のスイッチ機構部断面の説明図FIG. 30 is an explanatory view of a cross section of a piston type switch mechanism portion.
【図３１】電気的なスイッチ機構部断面の説明図FIG. 31 is an explanatory view of a cross section of an electric switch mechanism section.
【図３２】電気スイッチ機構部を内視鏡本体部に備えた
内視鏡全体の概略構成説明図FIG. 32 is a schematic configuration explanatory diagram of the entire endoscope including an electric switch mechanism portion in the endoscope main body portion.
【図３３】図３２のＡ−Ａ線断面概略説明図33 is a schematic cross-sectional view taken along the line AA of FIG. 32.
【図３４】洗浄機構の第１の構成例を示す構成説明図FIG. 34 is a structural explanatory view showing a first structural example of the cleaning mechanism.
【図３５】三方活栓の構成を示す説明図FIG. 35 is an explanatory diagram showing the structure of a three-way stopcock.
【図３６】洗浄機構の第２の構成例を示す構成説明図FIG. 36 is a structural explanatory view showing a second structural example of the cleaning mechanism.
【図３７】洗浄機構の第３の構成例を示す構成説明図FIG. 37 is a structural explanatory view showing a third structural example of the cleaning mechanism.
【図３８】レンズ曇り防止手段を備えた第１の例を示す
構成説明図FIG. 38 is a structural explanatory view showing a first example provided with a lens fogging preventing means.
【図３９】挿入部先端部の洗浄水噴出口を照明光によっ
て加温可能なように構成した内視鏡先端部の構成例を示
す説明図FIG. 39 is an explanatory diagram showing a configuration example of an endoscope distal end portion configured so that the cleaning water ejection port at the insertion portion distal end portion can be heated by illumination light.
【図４０】レンズ曇り防止手段を備えた第２の例に係る
挿入部先端部の正面図FIG. 40 is a front view of the distal end portion of the insertion portion according to the second example including the lens fogging preventing means.
【図４１】図４０のＡ−Ａ断面図41 is a sectional view taken along the line AA of FIG. 40.
【図４２】レンズ曇り防止手段を備えた第３の例に係る
挿入部先端部の正面図FIG. 42 is a front view of the distal end portion of the insertion section according to the third example including the lens fogging preventing means.
【図４３】図４２のＡ−Ａ断面図43 is a cross-sectional view taken along the line AA of FIG. 42.
【図４４】光源装置の出射光を用いたレンズ曇り防止手
段の構成例を示す構成説明図FIG. 44 is a structural explanatory view showing a structural example of lens fogging preventing means using the emitted light of the light source device.
【図４５】光源装置の出射光を用いたレンズ曇り防止手
段の構成例を示す構成説明図FIG. 45 is a structural explanatory view showing a structural example of lens fogging preventing means using emitted light of a light source device.
【図４６】光源装置の出射光を用いたレンズ曇り防止手
段の変形例を示す構成説明図FIG. 46 is a structural explanatory view showing a modified example of the lens fogging preventing means using the emitted light of the light source device.
【図４７】従来技術による内視鏡全体の概略構成説明図FIG. 47 is a schematic configuration explanatory view of the entire endoscope according to a conventional technique.
１０…内視鏡 １２…内視鏡挿入部 １３…シース １３ａ…縁部 １６…内視鏡挿入部先端部 ２２…送水チャンネル ２３…ノズル ２４…送水管路 ２５…洗浄手段 ２６…先端間隙部 ２７…挿入部間隙部 ２８…吸引管路 ２９…吸引手段 DESCRIPTION OF SYMBOLS 10 ... Endoscope 12 ... Endoscope insertion part 13 ... Sheath 13a ... Edge part 16 ... End part of endoscope insertion part 22 ... Water supply channel 23 ... Nozzle 24 ... Water supply conduit 25 ... Cleaning means 26 ... Tip gap part 27 ... Gap part of insertion part 28 ... Suction line 29 ... Suction means
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年９月３０日[Submission date] September 30, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の名称[Name of item to be amended] Title of invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【発明の名称】 内視鏡装置Title: Endoscopic device
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００１[Correction target item name] 0001
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００１】[0001]
【産業上の利用分野】本発明は、体腔内の観察や処置を
行う内視鏡装置に関し、特に洗浄により良好な観察視野
を確保するようにした内視鏡装置に関する。The present invention relates to relates toan endoscope apparatus which performs observation or treatment of a body cavity, anendoscope apparatus that ensure good observation field of view in particular washing.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】本発明は上記事情に鑑みてなされたもの
で、内視鏡挿入部先端の送水液を完全に除去して、良好
な観察視野を確保することのできる内視鏡装置を提供す
ることを目的とする。The present invention has been made in view of the above circumstances, and provides anendoscope apparatus capable of completely removing the water-supplying liquid at the tip of the endoscope insertion portion and ensuring a good observation visual field. With the goal.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
本発明による内視鏡装置は、シースの先端内側に形成し
た縁部の内面と内視鏡挿入部の先端面との間に形成され
た先端間隙部と、この先端間隙部に連通しシース内面と
内視鏡挿入部外面との間に形成された流体通路とを具備
したものである。In order to achieve the above object, anendoscope apparatus according to the present inventionis formed inside a distal end of asheath.
Formed between the inner surface of the edge and the distal end surface of the endoscope insertion portion.
And the inner surface of the sheath that communicates with this distal end gap and
A fluid passageway formed between the endoscope insertion portion and the outer surface thereof
It was done.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００９】[0009]
【作用】上記構成により、シースの先端内側に形成した
縁部の内面と内視鏡挿入部の先端面との間に形成された
先端間隙部と、シース内面と内視鏡挿入部外面との間に
形成された流体通路とを介して、内視鏡挿入部の先端面
の洗浄や、先端面に付着した液の吹き飛ばしや、先端面
に付着した液の吸引の少なくともいずれか一つに利用で
きる。[Function] With the above structure,it is formed inside the distal end of thesheath.
Formed between the inner surface of the rim and the tip of the endoscope insertion part
Between the tip gap and the inner surface of the sheath and the outer surface of the endoscope insertion section
Through the formed fluid passage, the tip surface of the endoscope insertion part
For cleaning, blowing off the liquid adhering to the tip surface, and tip surface
It can be used for at least one of the suction of the liquid adhering to
Wear.
【手続補正７】[Procedure Amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】[0010]
【実施例】以下、図面を参照して本発明の実施例を説明
する。図１ないし図３は本発明の第１実施例を示し、図
１は内視鏡装置全体の概略構成説明図、図２は内視鏡挿
入部先端部の拡大説明図、図３は先端側よりみた内視鏡
挿入部の説明図である。Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention, FIG. 1 is a schematic configuration explanatory view of the entireendoscope apparatus , FIG. 2 is an enlarged explanatory view of a distal end portion of an endoscope insertion portion, and FIG. 3 is a distal end side. It is explanatory drawing of the endoscope insertion part seen.
【手続補正８】[Procedure Amendment 8]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１３】また、上記内視鏡挿入部１２にはレンズ管
１８が挿通されており、上記内視鏡挿入部先端部１６の
先端面１６ａで、上記レンズ管１８を閉塞するカバーガ
ラス１９の表面が露呈されている。このカバーガラス１
９の後方には、対物レンズ系２０とリレー光学系２１と
が配設され、上記対物レンズ系２０で結像された光学像
が上記リレー光学系２１で上記操作部１１を経て接眼部
１５に伝送される。A lens tube 18 is inserted through the endoscope insertion portion 12, and a surface of a cover glass 19 that closes the lens tube 18 at a tip surface 16a of the tip portion 16 of the endoscope insertion portion. Is exposed. This cover glass 1
An objective lens system 20 and a relay optical system 21 are arranged behind 9 and an optical image formed by the objective lens system 20is passed through the operation section 11 by the relay optical system 21 andan eyepiece section.
15 is transmitted.
【手続補正９】[Procedure Amendment 9]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２２[Name of item to be corrected] 0022
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２２】ここで、上記シース１３先端内側に縁部１
３ａが設けられているので、吸引力が確実にかつほぼ全
周から上記カバーガラス１９の方向に向けられ、強力で
かつむらのない吸引を行うことができる。Here, the edge portion 1 is formed inside the distal end of the sheath 13.
Since 3a is provided, the suction force can be ensuredand almost
Directed from the circumference toward the cover glass 19,
And it is possible to performnon-uniformity without suction.
【手続補正１０】[Procedure Amendment 10]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２５[Name of item to be corrected] 0025
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２５】次に、図４および図５は本発明の第２実施
例を示し、図４は内視鏡装置全体の概略構成説明図、図
５は先端側よりみた内視鏡挿入部の説明図である。この
第２実施例も前記第１実施例とほぼ同様に構成される
が、洗浄に係る構成をシース側ではなく内視鏡本体側に
備えた点が前記第１実施例とは異なる。Next, FIGS. 4 and 5 show a second embodiment of the present invention, FIG. 4 is a schematic structural explanatory view of the entireendoscope apparatus , and FIG. 5 is an explanation of the endoscope insertion portion viewed from the distal end side. It is a figure. The second embodiment is also configured in substantially the same manner as the first embodiment, but differs from the first embodiment in that the cleaning-related configuration is provided not on the sheath side but on the endoscope body side.
【手続補正１１】[Procedure Amendment 11]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３６[Correction target item name] 0036
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３６】尚、上記第１実施例と同じ構成部分につい
ては、その説明を省略する。すなわち、図６および図７
に示すように、内視鏡６０の挿入部６１は、第１のシー
ス６２に挿通されており、この第１のシース６２は先端
に内視鏡６０の先端面のほぼ全体を覆う透明窓６３が設
けられ、先端部が気密になっている。この透明窓６３の
外側表面は、凹凸のない滑らかな表面であると共に、シ
ース６２の先端に対し透明窓６３は段差が生じず同一面
となるようになっている。なお、透明窓６３の外側表面
に汚れを付着しにくくするようなコーティングが施され
ていても良いし、更に、透明窓６３の内外表面には曇り
を生じにくくするようなコーティングが施されていても
良い。The description of the same components as those in the first embodiment will be omitted. That is, FIG. 6 and FIG.
As shown in FIG. 6, the insertion portion 61 of the endoscope 60 is inserted through a first sheath 62, and the first sheath 62 has a transparent window 63whose tip covers almost the entire distal end surface of the endoscope 60. Is provided and the tip is airtight.Of this transparent window 63
The outer surface is a smooth surface with no irregularities and
The transparent window 63 does not have a step with respect to the tip of the base 62 and has the same surface
It is supposed to be. The outer surface of the transparent window 63
Has a coating that makes it difficult for dirt to adhere to
May be present, and moreover, the inner and outer surfaces of the transparent window 63 are clouded.
Even if it is coated to prevent
good.
【手続補正１２】[Procedure Amendment 12]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００４３[Correction target item name] 0043
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００４３】図８ないし図１０は本発明の第４実施例を
示し、図８は内視鏡装置全体の概略構成説明図、図９は
内視鏡挿入部の拡大説明図であり、図９（ａ）は図８の
Ａ方向から見た矢視図、図９（ｂ）は図８のＢ−Ｂ線断
面図、図９（ｃ）は図８のＣ−Ｃ線断面図、図１０は内
視鏡挿入部の変形例の断面説明図である。FIGS. 8 to 10 show a fourth embodiment of the present invention, FIG. 8 is a schematic configuration diagram of the entireendoscope apparatus , and FIG. 9 is an enlarged explanatory diagram of the endoscope insertion portion. 8A is a view seen from the direction A in FIG. 8, FIG. 9B is a sectional view taken along line BB in FIG. 8, and FIG. 9C is a sectional view taken along line CC in FIG. FIG. 8 is a cross-sectional explanatory view of a modified example of the endoscope insertion portion.
【手続補正１３】[Procedure Amendment 13]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００５２[Correction target item name] 0052
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００５２】次に、上記構成による実施例の作用につい
て説明する。内視鏡１２０によって体腔内患部等の観察
を行う際に、汚れなどが挿入部先端部のカバーガラス１
２５の表面に付着してその除去のために洗浄を行う場
合、三方活栓１３５を操作して、送水手段１３６から洗
浄水をシース内に送り込み、シース１２３内面と内視鏡
挿入部１２２との間の挿入部溝１３２及び先端部溝１３
１を介して洗浄水をシース先端部１２８へ導き、先端部
溝１３１より前記カバーガラス１２５に吹き付ける。こ
こで、内視鏡挿入部先端面１２４における洗浄水等の流
れは図９（ａ）中の矢印で示すようになる。Next, the operation of the embodiment having the above structure will be described. When observing a diseased part in a body cavity with the endoscope 120, the cover glass 1 on the tip of the insertion part becomes dirty.
In the case of adhering to the surface of No. 25 and performing cleaning for its removal, the three-way stopcock 135 is operated to send the cleaning water into the sheath from the water supply means 136, and the space between the inner surface of the sheath 123 and the endoscope insertion portion 122 is Insertion groove 132 and tip groove 13
The washing water led to the sheath distal end portion 128 through atip portion
The cover glass 125 is sprayedfrom the groove 131 . Here, the flow of cleaning water or the like on the distal end surface 124 of the endoscope insertion portion is as shown by the arrow in FIG.
【手続補正１４】[Procedure Amendment 14]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００６２[Correction target item name] 0062
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００６２】図１４ないし図１８は本発明の第６実施例
を示し、図１４は内視鏡装置全体の概略構成説明図、図
１５は内視鏡挿入部の拡大説明図であり、図１５（ａ）
は図１４のＡ方向から見た矢視図、図１５（ｂ）は図１
４のＢ−Ｂ線断面図、図１５（ｃ）は図１４のＣ−Ｃ線
断面図、図１６ないし図１８は内視鏡挿入部とシース挿
入部との間の間隙部の気密構造を説明する図であり、図
１６は内視鏡を挿入した状態のシース挿入部の断面説明
図、図１７は内視鏡を挿入していない状態のシース挿入
部の断面説明図、図１８は間隙部の気密構造の変形例を
示す断面説明図である。FIGS. 14 to 18 show a sixth embodiment of the present invention, FIG. 14 is a schematic structural explanatory view of the entireendoscope apparatus , and FIG. 15 is an enlarged explanatory view of an endoscope insertion portion. (A)
14 is a view seen from the direction A in FIG. 14, and FIG.
4 is a sectional view taken along the line BB of FIG. 4, FIG. 15 (c) is a sectional view taken along the line CC of FIG. 14, and FIGS. 16 to 18 show the airtight structure of the gap between the endoscope insertion portion and the sheath insertion portion. 16A and 16B are explanatory views, FIG. 16 is a cross-sectional explanatory view of the sheath insertion portion with the endoscope inserted, FIG. 17 is a cross-sectional explanatory view of the sheath insertion portion without the endoscope inserted, and FIG. 18 is a gap. It is sectional explanatory drawing which shows the modification of the airtight structure of a part.
【手続補正１５】[Procedure Amendment 15]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００７０[Name of item to be corrected] 0070
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００７０】図１９ないし図２１は本発明の第７実施例
を示し、図１９は内視鏡装置全体の概略構成説明図、図
２０及び図２１は内視鏡挿入部の拡大説明図であり、図
２０（ａ）は図１９のＡ方向から見た矢視図、図２０
（ｂ）は図１９のＢ−Ｂ線断面図、図２０（ｃ）は図１
９のＣ−Ｃ線断面図、図２１は図２０（ｂ）のＤ−Ｄ線
断面図である。19 to 21 show a seventh embodiment of the present invention, FIG. 19 is a schematic structural view of the entireendoscope apparatus , and FIGS. 20 and 21 are enlarged explanatory views of the endoscope insertion portion. 20 (a) is a view seen from the direction A in FIG. 19, and FIG.
19B is a sectional view taken along line BB of FIG. 19, and FIG. 20C is FIG.
9 is a sectional view taken along the line CC of FIG. 9, and FIG. 21 is a sectional view taken along the line DD of FIG.
【手続補正１６】[Procedure Amendment 16]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００８０[Correction target item name] 0080
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００８０】図２４ないし図２７は本発明の第９実施例
を示し、図２４は内視鏡装置全体の概略構成説明図、図
２５及び図２６は内視鏡挿入部の拡大説明図であり、図
２５（ａ）は図２４のＡ方向から見た矢視図、図２５
（ｂ）は図２４のＢ−Ｂ線断面図、図２５（ｃ）は図２
４のＣ−Ｃ線断面図、図２６は図２５（ｂ）のＤ−Ｄ線
断面図、図２７はシース先端部の間隙部の変形例を示す
説明図である。24 to 27 show a ninth embodiment of the present invention, FIG. 24 is a schematic structural explanatory view of the entireendoscope apparatus , and FIGS. 25 and 26 are enlarged explanatory views of the endoscope insertion portion. 25A is a view seen from the direction A in FIG. 24, and FIG.
24B is a sectional view taken along line BB in FIG. 24, and FIG.
4 is a sectional view taken along the line CC of FIG. 4, FIG. 26 is a sectional view taken along the line DD of FIG. 25B, and FIG. 27 is an explanatory view showing a modified example of the gap portion of the sheath distal end portion.
【手続補正１７】[Procedure Amendment 17]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００８８[Correction target item name] 0088
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００８８】図２８は着脱自在なスイッチ機構部を備え
た内視鏡装置全体の概略構成説明図で、図２９はスイッ
チ機構部断面の説明図である。FIG. 28 is a schematic structural explanatory view of the entireendoscope apparatus having a detachable switch mechanism portion, and FIG. 29 is a sectional view of the switch mechanism portion.
【手続補正１８】[Procedure 18]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００９９[Correction target item name] 0099
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００９９】次に、図３２は上述の電気的なスイッチ機
構部を内視鏡本体部に着脱自在に備えた内視鏡装置全体
の概略構成説明図で、図３３は図３２のＡ−Ａ線断面概
略説明図である。Next, FIG. 32 is a schematic structural explanatory view of the entireendoscope apparatus in which the above-mentioned electric switch mechanism portion is detachably provided in the endoscope main body portion, and FIG. 33 is an AA of FIG. It is a line cross-section schematic explanatory drawing.
【手続補正１９】[Procedure Amendment 19]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０１４８[Name of item to be corrected] 0148
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０１４８】[0148]
【発明の効果】以上説明したように本発明によれば、内
視鏡挿入部先端の送水液を完全に除去することができる
ため、良好な観察視野を確保することが可能となる。As described above, according to the present invention, it is possible to completely remove the water supply liquid at the tip of the endoscope insertion portion, and thus it is possible to secure a good observation visual field.
【手続補正２０】[Procedure amendment 20]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図１[Name of item to be corrected] Figure 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】本発明の第１実施例に係る内視鏡装置全体の概
略構成説明図FIG. 1 is a schematic configuration explanatory diagram of an entireendoscope apparatus according to a first embodiment of the present invention.
【手続補正２１】[Procedure correction 21]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図４[Name of item to be corrected] Fig. 4
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図４】本発明の第２実施例に係る内視鏡装置全体の概
略構成説明図FIG. 4 is a schematic configuration explanatory diagram of an entireendoscope apparatus according to a second embodiment of the present invention.
【手続補正２２】[Procedure correction 22]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図８[Correction target item name] Figure 8
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図８】本発明の第４実施例に係る内視鏡装置全体の概
略構成説明図FIG. 8 is a schematic configuration explanatory diagram of an entireendoscope apparatus according to a fourth embodiment of the present invention.
【手続補正２３】[Procedure amendment 23]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図１４[Name of item to be corrected] Fig. 14
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１４】本発明の第６実施例に係る内視鏡装置全体の
概略構成説明図FIG. 14 is a schematic configuration explanatory diagram of the entireendoscope apparatus according to the sixth embodiment of the present invention.
【手続補正２４】[Procedure correction 24]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図１９[Name of item to be corrected] Fig. 19
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１９】本発明の第７実施例に係る内視鏡装置全体の
概略構成説明図FIG. 19 is a schematic configuration explanatory diagram of the entireendoscope apparatus according to the seventh embodiment of the present invention.
【手続補正２５】[Procedure correction 25]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図２４[Name of item to be corrected] Fig. 24
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図２４】本発明の第９実施例に係る内視鏡装置全体の
概略構成説明図FIG. 24 is a schematic configuration explanatory diagram of the entireendoscope apparatus according to the ninth embodiment of the present invention.
【手続補正２６】[Procedure Amendment 26]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図２８[Correction target item name] Fig. 28
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図２８】着脱自在なスイッチ機構部を備えた内視鏡装
置全体の概略構成説明図FIG. 28 is anendoscope apparatus including a detachable switch mechanism section.
Schematic diagram illustrating the configuration of the entirelocation
【手続補正２７】[Procedure Amendment 27]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図３２[Name of item to be corrected] Fig. 32
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図３２】電気スイッチ機構部を内視鏡本体部に備えた
内視鏡装置全体の概略構成説明図FIG. 32 is a view showing an electric switch mechanism provided in the endoscope main body.
Schematic configuration diagram of the entireendoscope apparatus
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5202335AJPH06189893A (en) | 1992-10-27 | 1993-08-16 | Endoscope device |
| US08/289,226US5575756A (en) | 1993-08-16 | 1994-08-12 | Endoscope apparatus |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4-288923 | 1992-10-27 | ||
| JP28892392 | 1992-10-27 | ||
| JP5202335AJPH06189893A (en) | 1992-10-27 | 1993-08-16 | Endoscope device |
| Publication Number | Publication Date |
|---|---|
| JPH06189893Atrue JPH06189893A (en) | 1994-07-12 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5202335APendingJPH06189893A (en) | 1992-10-27 | 1993-08-16 | Endoscope device |
| Country | Link |
|---|---|
| JP (1) | JPH06189893A (en) |
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| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal | Free format text:JAPANESE INTERMEDIATE CODE: A02 Effective date:20020130 |