【発明の詳細な説明】［産業上の利用分野］本発明は、人体内腔に挿入し内腔の光学観察とその周囲
の超音波検査を行なう超音波内視鏡に係わり、詳しくは
超音波断層検査領域に穿刺針を穿刺し、この穿刺針の位
置を超音波断層像で確認しつつ安全に穿刺を行なう超音
波ガイド穿刺機能を有する超音波内視鏡の先端構造に関
するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an ultrasonic endoscope that is inserted into a human body cavity and performs optical observation of the internal cavity and ultrasonic examination of the surrounding area. The present invention relates to a tip structure of an ultrasound endoscope having an ultrasound-guided puncture function that punctures a tomographic examination region with a puncture needle and safely performs the puncture while confirming the position of the puncture needle on an ultrasound tomographic image.
［従来の技術］体腔内からの超音波ガイド穿刺は、体表からの超音波診
断では発見しにくい微少病変やＢｌａ等の他の臓器が邪
魔をして体表からの超音波ガイド穿刺がしにくい臓器に
対しても対応できることから超音波ガイド穿刺が可能な
超音波内視鏡の開発が望まれている。[Conventional technology] Ultrasound-guided puncture from within a body cavity is difficult to detect with ultrasonic diagnosis from the body surface due to interference from micro lesions and other organs such as Bla. The development of an ultrasound endoscope that can perform ultrasound-guided puncture is desired because it can be used to treat organs that are difficult to penetrate.
これを可能にするこれまでの発明の１つとじて特許公開
昭５６−１５８６４６が有る。これは挿入部の先端部に
側面方向に向けて超音波探触子を設け、この被検査方向
に穿刺針を出没するための穿刺針導出口を超音波探触子
に並設し、さらに穿刺針の角度を調節するガイド機構を
設けると言うものである。One of the previous inventions that makes this possible is Patent Publication No. 56-158646. In this method, an ultrasonic probe is installed at the tip of the insertion section facing toward the side, and a puncture needle outlet for the puncture needle to emerge and retract in the direction to be inspected is arranged parallel to the ultrasound probe. A guide mechanism is provided to adjust the angle of the needle.
また、他の方法として挿入部の先端端面に超音波探触子
と穿刺針導出口、観察光学系の対物レンズ、照明レンズ
、等をまとめて設けることにより、穿刺針の挿通路を挿
入方向にほぼ沿って設けられるようにし、これにより穿
刺針のスムーズな突出を可能にし、かつ超音波探触子の
超音波走査範囲内に穿刺針を捕らえることができるよう
にすることも考えられる。Another method is to provide the ultrasound probe, the puncture needle outlet, the objective lens of the observation optical system, the illumination lens, etc. all at once on the distal end face of the insertion section, so that the insertion path of the puncture needle is oriented in the insertion direction. It is also conceivable that the puncture needle be provided almost along the same line, thereby allowing the puncture needle to protrude smoothly and to be captured within the ultrasonic scanning range of the ultrasound probe.
［発明が解決しようとする課題］しかし、これまでの超音波ガイド穿刺機能を有する超音
波内視鏡に関する前記の発明は、いずれも実現には問題
があり具体化されていないのが実情である。[Problem to be solved by the invention] However, the reality is that all of the above-mentioned inventions related to ultrasound endoscopes having an ultrasound-guided puncturing function have problems in realization and have not been materialized. .
例えば超音波内視鏡による超音波ガイド穿刺がイｆ効と
見られる胃内から膵臓を狙う超音波ガイド穿刺では、穿
刺の深さは約３値は必要である。深さが約３ω必要と言
うことは穿刺針の長さも約３個は必要であると言うこと
であり、真っ直ぐに穿刺できなければならないことから
ある程度の剛性をもった物でなくてはならない。For example, in ultrasound-guided puncture aimed at the pancreas from within the stomach, where ultrasound-guided puncture using an ultrasound endoscope is considered to be effective, the puncture depth needs to be about three values. The fact that the depth needs to be about 3ω means that about 3 puncture needles are required, and since they must be able to puncture straight, they must have a certain degree of rigidity.
剛性を持った長い穿刺針は挿通路が小さな曲率で屈曲し
ていると突っ掛かって挿通不能になる。If the insertion path is bent with a small curvature, a long, rigid puncture needle will jam and become unable to be inserted.
このムクなくとも穿刺針の導出口付近の挿通路は曲率の
小さい長い挿通路である必要がある。At the very least, the insertion path near the outlet of the puncture needle needs to be a long insertion path with a small curvature.
特許公開昭５６−１５８６４６の実施例においては、挿
入部の先端部に側面方向に向けて設けた超音波探触子す
なわち電子リニア型の超音波探触子の長手方向に穿刺針
の導出口を並設している。In the embodiment of Patent Publication No. 56-158646, a puncture needle outlet is provided in the longitudinal direction of an ultrasonic probe, that is, an electronic linear type ultrasonic probe, which is provided at the distal end of the insertion section toward the side. They are installed side by side.
電子リニア型では超音波断層範囲は超音波探触子の長さ
で決まってくるので断層範囲を広くすると先端部が長く
なり人体への挿入が難しくなるため、約３１程の超音波
探触子を用いるのが一般的である。この約３１程の超音
波探触子の長手方向に穿刺針の導出口を並設した場合に
は導出口からさらに長い穿刺針を挿通できる曲率の小さ
い長い管路を設けておく必要があり、前述の例では約３
ａｍ程の長い管路となり、先端部の長さは全体で少なく
とも約６ｏａ以上になってしまい人体への挿入は極めて
難しくなる。また、穿刺針の角度を調節するガイド機構
等を設けると更に大形化する上、剛性のある穿刺針を屈
曲させて角度調整をすることは実際上極めて難しく、例
え曲げ得たとしても抵抗が大きく挿通不可能になるのが
実情である。また、例えガイド機構が無くとも挿入部の
長軸方向に沿って挿入していく穿刺針を先端部の側面方
向に突出させることは短い長さの中で曲げようとすれば
曲率の小さな挿通路となって穿刺針が突っ掛かり挿通が
出来なくなり、また、挿通できるようになだらかな傾斜
で曲げようとすれば長い挿通路が必要になり先端が長大
化してしまうと言う問題がある。In the electronic linear type, the ultrasonic tomographic range is determined by the length of the ultrasound probe, so if the tomographic range is widened, the tip becomes longer, making it difficult to insert into the human body, so approximately 31 ultrasound probes are used. It is common to use If the puncture needle outlets are arranged in parallel in the longitudinal direction of these approximately 31 ultrasound probes, it is necessary to provide a long conduit with a small curvature through which a longer puncture needle can be inserted from the outlet. In the example above, about 3
The tube becomes as long as am, and the total length of the tip is at least about 6 oa or more, making it extremely difficult to insert it into the human body. Furthermore, if a guide mechanism or the like is provided to adjust the angle of the puncture needle, the size of the puncture needle will become even larger, and it is actually extremely difficult to adjust the angle by bending a rigid puncture needle. The reality is that it becomes largely impossible to insert. Furthermore, even if there is no guide mechanism, the puncture needle that is inserted along the longitudinal direction of the insertion part should protrude in the lateral direction of the tip, which will result in an insertion path with a small curvature if you try to bend it within a short length. This causes the problem that the puncture needle gets stuck and cannot be inserted, and that if the puncture needle is bent at a gentle slope so that it can be inserted, a long insertion path is required and the tip becomes elongated.
更にまた、スムーズな突出を可能にするようになだらか
な角度で突出させるようにした場合、先端部の側面方向
に向けていわゆる電子リニア型の超音波探触子を設けた
のではその超音波走査範囲は側面方向だけであるので、
穿刺針は超音波診断装置の特性として良好な断層像が得
にくい近距離部分を通過し、更に突き進むと走査範囲か
ら外れてしまい穿刺針の位置が良好に把握できなくなる
と言う問題がある。Furthermore, when protruding at a gentle angle to enable smooth protrusion, a so-called electronic linear type ultrasonic probe is installed toward the side of the tip, making it difficult to scan the ultrasonic waves. Since the range is only in the lateral direction,
As a characteristic of ultrasonic diagnostic equipment, the puncture needle passes through a short distance area where it is difficult to obtain a good tomographic image, and if it advances further, it will move out of the scanning range, making it difficult to accurately determine the position of the puncture needle.
これに対し、挿入部の先端端面に超音波探触子と穿刺針
導出口、ｉ察光学系の対物レンズ、照明レンズ、等をま
とめて設ける方法では、穿刺針の導出口が先端端面にあ
るのでその挿通路は挿入方向にほぼ沿って設けられるの
で、これにより穿刺針のスムーズな突出を可能にした上
で、超音波走査範囲内に穿刺針を突出させることができ
るが、小さな容積ですむ電子セクタ型超音波探触子でさ
えも約１０閣角程の大きさが必要であり、１０閣角の対
角の長さは約１４閣以上あるので、これに導出口、対物
レンズ、照明レンズ、を並設すると更に大きく先端部が
大径化して人体への挿入が難しくなると言う問題がある
。On the other hand, in a method in which the ultrasound probe, the puncture needle outlet, the objective lens of the i-sensing optical system, the illumination lens, etc. are all provided on the distal end face of the insertion section, the puncture needle outlet is on the distal end face. Therefore, the insertion path is provided almost along the insertion direction, which allows the puncture needle to protrude smoothly and within the ultrasound scanning range, but with a small volume. Even an electronic sector type ultrasonic probe needs to be about 10 squares in size, and the diagonal length of 10 squares is about 14 squares or more, so it must be equipped with an outlet, objective lens, and lighting. There is a problem in that if the lenses are arranged side by side, the diameter of the distal end becomes even larger, making it difficult to insert the lenses into the human body.
本発明は上記問題を謹み発明したものであり、先端部を
大形化すること無く、穿刺針をスムーズに突出させるこ
とができ、更に超音波断層像内に良好に穿刺針を確認で
きる超音波ガイド穿刺が可能な超音波内視鏡を提供する
事を目的にしたものである。The present invention has been devised in consideration of the above-mentioned problems, and it is possible to smoothly project the puncture needle without increasing the size of the tip, and furthermore, the present invention uses ultrasound that allows the puncture needle to be clearly confirmed in an ultrasound tomographic image. The purpose is to provide an ultrasound endoscope that can perform guided puncture.
［課題を解決する為の手段］本発明の超音波内視鏡の特徴は、細長状の人体挿入部と
、前記人体挿入部の先端部に設けた先端ブロックと、前
記先端ブロックの先端から一側面にかけて多数個の超音
波振動子を凸状に配列した超音波探触子と、前記超音波
探触子の手前の前記超音波探触子の送受信面側に位置す
る前記先端ブロックの外表面に設けた少なくとも観察光
学系の対物レンズと照明レンズを有する開口面と、前記
開口面の前記超音波探触子による走査ラインの延長線上
に導出口を有し、前記超音波探触子による超音波走査面
を含む平面に沿ってあけられ、かつ前記開口面と前記先
端ブロックの後端面とを結ぶようにあけられた穿刺針の
挿通路と、を有し、前記超音波探触子はその超音波走査
範囲の先端側が前記挿通路から突出した穿刺針の角度と
同一かそれ以上に前記超音波探触子を設けた逆側面側に
広くなるように設け、前記挿通路は少なくとも挿通させ
る穿刺針の先端硬質部を収容できる長さを有するように
した事である。[Means for Solving the Problems] The ultrasonic endoscope of the present invention is characterized by an elongated human body insertion section, a tip block provided at the distal end of the human body insertion section, and a tip block disposed at the distal end of the distal end block. an ultrasonic probe in which a large number of ultrasonic transducers are arranged in a convex shape over the side surface; and an outer surface of the tip block located on the transmitting/receiving surface side of the ultrasonic probe in front of the ultrasonic probe. an aperture surface provided with at least an objective lens and an illumination lens of an observation optical system, and an outlet on an extension line of a scanning line of the aperture surface by the ultrasonic probe; a puncture needle insertion passage opened along a plane including the acoustic wave scanning plane and connected between the opening face and the rear end face of the distal end block; The tip side of the ultrasonic scanning range is provided so that it becomes wider on the side opposite to where the ultrasonic probe is provided at the same or greater angle than the angle of the puncture needle protruding from the insertion passage, and the insertion passage is at least a puncture through which the puncture needle is inserted. It is designed to have a length that can accommodate the hard part of the tip of the needle.
［作用］本発明の超音波内視鏡においては、超音波振動子を多数
個の超音波振動子を凸状に配列した、いわゆるコンベッ
クス型の超音波探触子にした事により、いわゆる電子リ
ニア型の超音波探触子に比べ同等あるいはそれ以上の超
音波走査範囲を有した上に超音波探触子部分が短縮化さ
れ、この手前に長い穿刺針を収容できる長い挿通路を並
設しても全体として比較的短い先端部長で広い超音波走
査範囲を有しつつまとめ上げる事ができる。また観察光
学系などの開口面を超音波探触子の手前に設けたことに
より超音波探触子と観察光学系などの内視鏡機能が同−
断面内に存在せず、よって比較的細い径で超音波探触子
と観察光学系などの内視鏡機能が収容される。また穿刺
針挿通路を開口面と先端ブロックの後端面とを結ぶよう
に且つ穿刺針の長さ以上にしたことにより、穿刺針を突
き出すのに大きな抵抗を食うことなく、スムーズに突き
出される。また前記超音波探触子による超音波断層範囲
の先端側端を穿刺針の突出方向と同一かそれ以上に超音
波探触子を設けた逆側面側に広くなるように設けたので
、穿刺針を刺入していった時に近距離から遠距離まで穿
刺針を超音波断層像内に良好に捕らえることとなる。[Function] In the ultrasonic endoscope of the present invention, the ultrasonic transducer is a so-called convex type ultrasonic probe in which a large number of ultrasonic transducers are arranged in a convex shape. It has an ultrasonic scanning range that is equal to or greater than that of conventional ultrasonic probes, and the ultrasonic probe part is shortened, with a long insertion path in front of it that can accommodate a long puncture needle. However, it is possible to assemble a wide ultrasonic scanning range with a relatively short tip length as a whole. In addition, by providing the aperture for the observation optical system in front of the ultrasound probe, the endoscope functions such as the ultrasound probe and the observation optical system are the same.
It does not exist within the cross section, and therefore has a relatively small diameter that accommodates endoscopic functions such as an ultrasound probe and an observation optical system. Furthermore, by making the puncture needle insertion passage connect the opening surface and the rear end face of the tip block and having a length longer than the puncture needle, the puncture needle can be smoothly ejected without encountering much resistance. In addition, since the distal end of the ultrasonic tomographic range of the ultrasonic probe is set so as to be wider on the side opposite to where the ultrasonic probe is provided, in the same direction as the protruding direction of the puncture needle or more, the puncture needle When the puncture needle is inserted, the puncture needle can be captured well in the ultrasonic tomographic image from short distances to long distances.
［実施例］以下、本発明の一実施例を図面を参照して説明する。[Example]Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第４図は本発明の全体構成図であり、本装置は先端部１
．湾曲部２．蛇管部３からなる挿入部４と、湾曲操作部
５．送気送水吸引操作部６．チャンネルロア、接眼部８
．からなる操作部９、さらには送気送水吸引管路や信号
線が通るコード１０゜本装置と図示したい超音波観測装
置や光源装置とをつなぐ為のコネクタ一部１１から構成
されている。FIG. 4 is an overall configuration diagram of the present invention, in which the distal end 1
．． Curved portion 2. An insertion section 4 consisting of a flexible tube section 3, and a bending operation section 5. Air supply water supply suction operation section 6. Channel lower, eyepiece 8
．． It further comprises a cord 10° through which air/water/suction pipes and signal lines pass, and a connector part 11 for connecting this device to an ultrasonic observation device or a light source device to be illustrated.
先端部１の詳細な側面断面図である第１図、同じく平面
図である第２図、第２図のイ矢視図である第３図、によ
り先端部１を説明する。The distal end portion 1 will be explained with reference to FIG. 1, which is a detailed side sectional view of the distal end portion 1, FIG. 2, which is also a plan view, and FIG. 3, which is a view in the direction of the arrow in FIG.
先端部１には先端ブロック１２が有り、先端ブロック１
２の先端部には多数個の超音波振動子を凸状に配列した
いわゆるコンベックス型の超音波探触子１３が設けであ
る。この超音波探触子１３の取り付は状態を詳述すると
、多数個の超音波振動子は先端ブロック１２の先端から
一側面にかけて凸状に配列してあり、この超音波探触子
１３による超音波走査範囲の先端側端（第１図のＡ）は
後述する先端ブロックから突出する穿刺針の突出方向に
対し平行（第１図のＢ）かあるいはそれより広くなるよ
う、すなわち先端ブロック１２において超音波振動子を
配列した前記−側面の逆側面側方向に向かって広くなる
よう、すなわち第１図の矢印Ｃ方向に広くなるように、
設けである。The tip part 1 has a tip block 12, and the tip block 1
A so-called convex type ultrasonic probe 13 in which a large number of ultrasonic transducers are arranged in a convex shape is provided at the tip of the probe 2 . To explain in detail how the ultrasonic probe 13 is mounted, a large number of ultrasonic transducers are arranged in a convex shape from the tip of the tip block 12 to one side. The distal end of the ultrasonic scanning range (A in FIG. 1) is parallel to the protruding direction of the puncture needle protruding from the distal block (B in FIG. 1), which will be described later, or is wider than that, that is, the distal block 12. The ultrasonic transducers are arranged in such a manner that it becomes wider toward the opposite side of the - side, that is, in the direction of arrow C in FIG.
It is a provision.
この超音波探触子１３の手前の超音波探触子の送受信面
側に位置する先端ブロックの外表面には先端側に行くに
従い深くなるように切り込まれた開口面１４が設けてあ
り、この開口面１４には観察光学系の対物レンズ１５と
照明レンズ１６及びレンズ面洗浄等の為の送気送水ノズ
ル１７と体腔内の空気や体液等を吸引する為の吸引口１
８が設けである。そして更にこの開口面１４の超音波探
触子による走査ライン１９の延長線上には穿刺針２０を
突出させるための穿刺針挿通路２１の導出口２２が設け
である。On the outer surface of the tip block located on the transmitting/receiving surface side of the ultrasonic probe in front of this ultrasonic probe 13, an opening surface 14 is provided which is cut into a hole that becomes deeper toward the tip side. This opening surface 14 includes an objective lens 15 of the observation optical system, an illumination lens 16, an air/water supply nozzle 17 for cleaning the lens surface, etc., and a suction port 1 for sucking air, body fluids, etc. in the body cavity.
8 is a provision. Further, an outlet 22 of a puncture needle insertion passage 21 for protruding the puncture needle 20 is provided on the extension line of the scanning line 19 by the ultrasonic probe of the opening surface 14.
この穿刺針挿通路２１は先端ブロック１２内において超
音波探触子１３による超音波走査面３５と同一な平面に
沿ってあけられておりその他端は先端ブロック１２の後
端面に開口している。そしてその長さは使用する穿刺針
の先端硬質部２３以上の長さを有し真っ直ぐにあけられ
ている。また先端ブロック１２の後端面の開口には可視
性を有する穿刺針挿通チューブ２４が連結されている。This puncture needle insertion passage 21 is opened in the tip block 12 along the same plane as the ultrasonic scanning surface 35 by the ultrasonic probe 13, and the other end is opened at the rear end surface of the tip block 12. The length thereof is longer than the hard tip portion 23 of the puncture needle used, and the hole is straight. Further, a visible puncture needle insertion tube 24 is connected to the opening on the rear end surface of the tip block 12.
２５は開口に穿刺針挿通チューブ２４を連結するための
連結パイプである。なお穿刺針挿通路の穿刺針の先端硬
質部具上の長さとは、先端ブロック１２内のみにおける
長さでなく連結パイプを含んだ長さであっても良いこと
は当然である。25 is a connecting pipe for connecting the puncture needle insertion tube 24 to the opening. It goes without saying that the length of the puncture needle insertion passage above the hard member at the tip of the puncture needle may not only be within the tip block 12 but also include the connecting pipe.
２６は超音波探触子１３の信号ケーブル、２７は対物レ
ンズ１５で集光した光を接眼部に伝える像伝送ファイバ
ー束、２８は照明レンズ１６を介して体腔内に光を照射
するための光伝送ファイバー束である。なお対物レンズ
１５等からなる観察光学系はその視野範囲に突出された
穿刺針が入るように設けである。２９は送気送水ノズル
１７に連通する送気送水管路である。３０は吸引口１８
に連通ずる吸引チャンネルである。なおこの吸引チャン
ネル３０及び吸引口１８は穿刺針挿通路を吸引管路とし
て共用することで省略しても良い。26 is a signal cable for the ultrasound probe 13, 27 is an image transmission fiber bundle that transmits the light collected by the objective lens 15 to the eyepiece, and 28 is a cable for irradiating light into the body cavity through the illumination lens 16. It is an optical transmission fiber bundle. Note that the observation optical system consisting of the objective lens 15 and the like is provided so that the protruding puncture needle enters its field of view. Reference numeral 29 denotes an air/water supply pipe line communicating with the air/water supply nozzle 17. 30 is suction port 18
It is a suction channel that communicates with the Note that the suction channel 30 and the suction port 18 may be omitted by using the puncture needle insertion path as the suction conduit.
３１は穿刺針２０の誤突出を防止するためのストッパー
である。このストッパー３１は通常は閉鎖状態になって
おりストッパー解除ワイヤー３２を引く事で開放される
ようになっている。31 is a stopper for preventing the puncture needle 20 from being erroneously protruded. This stopper 31 is normally in a closed state and is opened by pulling the stopper release wire 32.
３３は先端ブロック１２を支持し、またこれを多数個連
結して湾曲管を構成する湾曲コマであり湾曲操作部５の
操作で図示したいワイヤーを引いたり緩めたりすること
で４方向に湾曲し先端部１を誘導する。３４はゴム状弾
性体でできた湾曲部の外被である。Reference numeral 33 is a bending piece that supports the tip block 12 and forms a bending tube by connecting a large number of these blocks.By pulling or loosening the wire as shown in the figure by operating the bending operation unit 5, the tip can be bent in four directions. Guide part 1. Reference numeral 34 denotes an outer covering of the curved portion made of a rubber-like elastic material.
以上のように構成された本装置は、人体挿入使用時には
湾曲部が湾曲していることが多く、後から長い穿刺針を
挿入していくことは途中で突っ掛かり難しいので、挿入
前に本装置に挿入し、先端ブロック１２内の穿刺針挿通
路２１に先端硬質部２３を収めておく０人体挿入後光学
観察及び超音波走査を行ない超音波断層像内に穿刺すべ
き目標を捕らえた後ストツパー解除ワイヤー３２を引き
ストッパー３１を開放し、穿刺針２０を押し込み突出さ
せる。突出した穿刺針は先ず観察光学系の視野に確認さ
れた後人体組織内に刺入され今度は超音波断層像内に確
認されることになる。そして深く刺入していっても超音
波断層範囲の先端側の端は穿刺針の突出方向以上に広く
なっているので深部においても超音波断層範囲内にしっ
かりととらえられ穿刺針の位置を確認することができる
。This device configured as described above often has a curved part when inserted into the human body, and it is difficult to insert a long puncture needle later because it may get caught in the middle. 0 After inserting into the human body, perform optical observation and ultrasonic scanning, and capture the target to be punctured in the ultrasound tomographic image. The release wire 32 is pulled to open the stopper 31, and the puncture needle 20 is pushed in to protrude. The protruding puncture needle is first confirmed in the field of view of the observation optical system, then inserted into human tissue, and then confirmed in the ultrasonic tomographic image. Even if the needle is inserted deeply, the distal end of the ultrasonic tomographic range is wider than the protruding direction of the puncture needle, so even deep parts can be firmly captured within the ultrasonic tomographic range and the position of the puncture needle can be confirmed. can do.
尚、上記実施例では穿刺針を使用するものとしたが、こ
れに限定する必要はなく、例えば生検鉗子等の処置具を
使用するものとしても同様の効果が得られる。胃内に水
をいれて行なう胃内脱気水充満法による胃壁の検査にお
いて、胃壁の内部構造を確認したうえでその表面組織を
生検する等の時にも穿刺針の場合と同様な効果を得るこ
とができる。In the above embodiment, a puncture needle is used, but there is no need to be limited to this, and similar effects can be obtained by using a treatment instrument such as biopsy forceps. It has the same effect as a puncture needle when examining the gastric wall using the intragastric deaeration water-filling method, which involves filling the stomach with water, to confirm the internal structure of the stomach wall and then biopsy its surface tissue. Obtainable.
又、本実施例では観察光学系に像伝送ファイバー束を用
いたが、先端にＣＣＤ撮像素子を設けたものにしてもよ
く、この場合操作部の接眼部は不要となる。さらにまた
、挿入部に屈曲自在な蛇管部を設けたが、硬質な棒状部
に湾曲部と先端部を連結したものであっても良い。Further, in this embodiment, an image transmission fiber bundle is used for the observation optical system, but a CCD image sensor may be provided at the tip, and in this case, the eyepiece part of the operation part is unnecessary. Furthermore, although the insertion portion is provided with a bendable flexible tube portion, it may be a hard rod-shaped portion with a curved portion and a distal end portion connected to each other.
［発明の効果］以上詳述したように、本発明の超音波内視鏡においては
、挿入部先端の先端ブロックにおいて先端から一側面に
かけて多数個の超音波振動子を凸状に配列した超音波探
触子を設けた事により、超音波探触子部分が短縮化され
、この手前に長い穿刺針を収容できる長い挿通路を並設
しても全体として比較的短い先端部長で広い超音波走査
範囲を有しつつまとめ上げる事ができ、観察光学系など
の開口面を超音波探触子の手前に設けたことにより超音
波探触子と観察光学系などの内視鏡機能が同一断面内に
存在せず、よって比較的細い径で超音波探触子と観察光
学系などの内視鏡機能が収容できる。[Effects of the Invention] As detailed above, in the ultrasonic endoscope of the present invention, a large number of ultrasonic transducers are arranged in a convex shape from the tip to one side of the tip block at the tip of the insertion section. By installing a probe, the ultrasonic probe part is shortened, and even if a long insertion passage that can accommodate a long puncture needle is placed in front of it, the tip length is relatively short overall, allowing for wide ultrasound scanning. By placing the aperture surface for the observation optical system in front of the ultrasound probe, the ultrasound probe and endoscope functions such as the observation optical system can be integrated within the same cross-section. Therefore, it is possible to accommodate endoscopic functions such as an ultrasound probe and an observation optical system with a relatively small diameter.
また穿刺針挿通路を開口面と先端ブロックの後端面とを
結ぶように且つ穿刺針の長さ以上にしたことにより、穿
刺針を突き出すのに大きな抵抗を食うことなく、スムー
ズに突き出すことができる。In addition, by making the puncture needle insertion path connect the opening surface and the rear end face of the tip block, and by making it longer than the puncture needle, the puncture needle can be pushed out smoothly without experiencing much resistance. .
また前記超音波探触子による超音波断層範囲の先端側端
を穿刺針の突出方向と同一かそれ以上に超音波探触子を
設けた逆側面側に広くなるように設けなので、穿刺針を
刺入していった時に近距離から遠距離まで穿刺針を超音
波断層像内に良好にとらえることができる。In addition, the distal end of the ultrasonic tomographic range of the ultrasonic probe is set so that it becomes wider on the side opposite to where the ultrasonic probe is provided, in the same direction as the protruding direction of the puncture needle or more. When the puncture needle is inserted, the puncture needle can be clearly captured in the ultrasonic tomographic image from short distances to long distances.
したがって、先端部を大形化することなく、穿刺針をス
ムーズに突き出すことができ、さらには穿刺針を超音波
断層像内に良好にとらえることが可能な超音波ガイド穿
刺ができる超音波内視鏡を提供することができることと
なる。Therefore, the ultrasound endoscopic system allows ultrasound-guided puncture, which allows the puncture needle to be smoothly ejected without increasing the size of the tip, and furthermore, allows the puncture needle to be clearly captured in the ultrasound tomographic image. It will be possible to provide a mirror.
第１図は、本発明の実施例の先端部の詳細な側面断面図
である。第２図は、本発明の実施例の先端部の詳細な平面図であ
る。第３図は第２図のイ矢視図である。第４図は、本発明の実施例の全体構成図である。１２ 先端ブロック１３ ．１１１音波探触子１４ 開口面２１ 穿刺針挿通路２２ 導出口２３ 先端硬質部FIG. 1 is a detailed side cross-sectional view of the distal end of an embodiment of the invention. FIG. 2 is a detailed plan view of the tip of an embodiment of the invention. FIG. 3 is a view in the direction of arrow A in FIG. 2. FIG. 4 is an overall configuration diagram of an embodiment of the present invention. 12 Tip block 13. 111 Sonic probe 14 Opening surface 21 Puncture needle insertion passage 22 Outlet port 23 Hard tip part
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63110175AJPH0747027B2 (en) | 1988-05-06 | 1988-05-06 | Ultrasound endoscope |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63110175AJPH0747027B2 (en) | 1988-05-06 | 1988-05-06 | Ultrasound endoscope |
| Publication Number | Publication Date |
|---|---|
| JPH01280446Atrue JPH01280446A (en) | 1989-11-10 |
| JPH0747027B2 JPH0747027B2 (en) | 1995-05-24 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63110175AExpired - LifetimeJPH0747027B2 (en) | 1988-05-06 | 1988-05-06 | Ultrasound endoscope |
| Country | Link |
|---|---|
| JP (1) | JPH0747027B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06169919A (en)* | 1992-12-03 | 1994-06-21 | Matsushita Electric Ind Co Ltd | Ultrasonic probe |
| JP2004113334A (en)* | 2002-09-25 | 2004-04-15 | Aloka Co Ltd | Ultrasonic search unit |
| JP2012005767A (en)* | 2010-06-28 | 2012-01-12 | Olympus Medical Systems Corp | Ultrasonic endoscope, and insertion assistance tool |
| US8285362B2 (en) | 2007-06-28 | 2012-10-09 | W. L. Gore & Associates, Inc. | Catheter with deflectable imaging device |
| US8852112B2 (en) | 2007-06-28 | 2014-10-07 | W. L. Gore & Associates, Inc. | Catheter with deflectable imaging device and bendable electrical conductor |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123594A1 (en)* | 1983-04-06 | 1984-10-31 | Universite Francois Rabelais | Endoscopic probe for viewing and ultrasonic scanning echography |
| JPS6075043A (en)* | 1983-09-30 | 1985-04-27 | オリンパス光学工業株式会社 | Ultrasonic diagnostic apparatus |
| JPS61244334A (en)* | 1985-04-23 | 1986-10-30 | オリンパス光学工業株式会社 | Ultrasonic diagnostic apparatus for body cavity |
| JPS6258255A (en)* | 1985-08-09 | 1987-03-13 | Konishiroku Photo Ind Co Ltd | Method for processing photosensitive lithographic plate |
| JPS6343648A (en)* | 1986-08-11 | 1988-02-24 | ゼネラル・エレクトリック・カンパニイ | Ultrasonic probe in body cavity |
| JPS63150058A (en)* | 1986-12-15 | 1988-06-22 | 株式会社 日立メデイコ | Ultrasonic probe for body cavity |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123594A1 (en)* | 1983-04-06 | 1984-10-31 | Universite Francois Rabelais | Endoscopic probe for viewing and ultrasonic scanning echography |
| JPS6075043A (en)* | 1983-09-30 | 1985-04-27 | オリンパス光学工業株式会社 | Ultrasonic diagnostic apparatus |
| JPS61244334A (en)* | 1985-04-23 | 1986-10-30 | オリンパス光学工業株式会社 | Ultrasonic diagnostic apparatus for body cavity |
| JPS6258255A (en)* | 1985-08-09 | 1987-03-13 | Konishiroku Photo Ind Co Ltd | Method for processing photosensitive lithographic plate |
| JPS6343648A (en)* | 1986-08-11 | 1988-02-24 | ゼネラル・エレクトリック・カンパニイ | Ultrasonic probe in body cavity |
| JPS63150058A (en)* | 1986-12-15 | 1988-06-22 | 株式会社 日立メデイコ | Ultrasonic probe for body cavity |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06169919A (en)* | 1992-12-03 | 1994-06-21 | Matsushita Electric Ind Co Ltd | Ultrasonic probe |
| JP2004113334A (en)* | 2002-09-25 | 2004-04-15 | Aloka Co Ltd | Ultrasonic search unit |
| US8285362B2 (en) | 2007-06-28 | 2012-10-09 | W. L. Gore & Associates, Inc. | Catheter with deflectable imaging device |
| US8852112B2 (en) | 2007-06-28 | 2014-10-07 | W. L. Gore & Associates, Inc. | Catheter with deflectable imaging device and bendable electrical conductor |
| JP2012005767A (en)* | 2010-06-28 | 2012-01-12 | Olympus Medical Systems Corp | Ultrasonic endoscope, and insertion assistance tool |
| Publication number | Publication date |
|---|---|
| JPH0747027B2 (en) | 1995-05-24 |
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