【０００１】[0001]
【発明の属する技術分野】この発明は、内視鏡用生検鉗
子の鉗子カップに処置用の高周波電流を通電できるよう
にした内視鏡用ホットバイオプシー鉗子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot biopsy forceps for an endoscope in which a high-frequency current for treatment can be applied to a forceps cup of a biopsy forceps for an endoscope.
【０００２】[0002]
【従来の技術】内視鏡用生検鉗子は、手元側からの遠隔
操作により作動するリンク機構によって開閉駆動される
一対の鉗子カップを先端部分に有し、内視鏡の鉗子チャ
ンネルに挿通して使用される。2. Description of the Related Art A biopsy forceps for an endoscope has a pair of forceps cups at its distal end which are driven to open and close by a link mechanism operated by remote control from a hand side, and is inserted into a forceps channel of the endoscope. Used.
【０００３】内視鏡用ホットバイオプシー鉗子は、その
ような生検鉗子の鉗子カップに高周波電流を通電するこ
とにより、生検組織採取の際に傷つけられる粘膜組織を
焼灼して、出血を防止できるようにしたものである。[0003] A hot biopsy forceps for an endoscope can cauterize mucous tissue damaged at the time of collecting a biopsy tissue by applying a high-frequency current to a forceps cup of such a biopsy forceps, thereby preventing bleeding. It is like that.
【０００４】[0004]
【発明が解決しようとする課題】体腔内のポリープ切除
には、導電性ワイヤによってループ状に形成されたいわ
ゆる高周波スネアが用いられるが、高周波電流による焼
灼が不十分な状態で切除が行われた場合等には、断端か
ら出血する場合がある。A so-called high-frequency snare formed in a loop by a conductive wire is used for resection of a polyp in a body cavity, but the resection is performed in a state where cauterization by a high-frequency current is insufficient. In some cases, bleeding may occur from the stump.
【０００５】一般に血管は粘膜面より硬いので、ポリー
プ切除後の断端では血管が数ミリメートル飛び出してい
て、そのような部分からの出血を経内視鏡的に止血する
場合に、ホットバイオプシー鉗子が用いられる。[0005] Since blood vessels are generally harder than the mucosal surface, the blood vessels protrude several millimeters at the stump after polyp resection, and when the bleeding from such a part is stopped endoscopically, the hot biopsy forceps is used. Used.
【０００６】図１１は、ポリープが切除された後の茎部
１０１の断端に血管１００の切り口が突出した状態を示
しており、開かれた状態のホットバイオプシー鉗子の鉗
子カップ９０を先端側から見た状態である。FIG. 11 shows a state in which the cut end of the blood vessel 100 protrudes from the stump of the stalk 101 after the polyp is excised, and the forceps cup 90 of the opened hot biopsy forceps is moved from the distal end side. It is in a state of seeing.
【０００７】このような状態から、一対の鉗子カップ９
０で血管１００の突出部を挟んで、その鉗子カップ９０
に高周波電流を流せば、血管１００の切り口部分を閉じ
た状態で焼灼、凝固して、止血をすることができる。[0007] From such a state, a pair of forceps cup 9
0, the forceps cup 90
When a high-frequency current is applied to the blood vessel, the blood vessel 100 can be cauterized and coagulated in a state where the cut portion is closed, thereby stopping the blood.
【０００８】止血具としては、レーザー照射を行うもの
や、高周波電極を押し当てるようにしたもの等もある
が、出血部位が血液で覆われていると正確な止血処置は
非常に困難であり、血管１００を摘んで焼灼することが
できる内視鏡用ホットバイオプシー鉗子は非常に安全か
つ確実に止血を行うことができる。[0008] As a hemostatic device, there are a device that irradiates a laser beam and a device that presses a high-frequency electrode. However, if the bleeding site is covered with blood, it is extremely difficult to perform an accurate hemostatic treatment. A hot biopsy forceps for an endoscope that can remove and cauterize the blood vessel 100 can perform hemostasis very safely and reliably.
【０００９】しかし、内視鏡用ホットバイオプシー鉗子
の鉗子カップは一般に９０°ないし１００°程度まで開
く。すると、図１２に略示されるように、鉗子カップ９
０で血管１００を摘んだときに、鉗子カップ９０の閉じ
方向に血管１００に加わる力Ｆに対して、血管１００を
鉗子カップ９０の間から押し出す方向に加わる力ｆ（ｆ
＝Ｆ．ｔａｎθ）が、ｆ≧Ｆと非常に大きい。そのた
め、血管１００が鉗子カップ９０の間から滑り出して、
うまく摘めない場合が多い。However, the forceps cup of the hot biopsy forceps for an endoscope generally opens up to about 90 ° to 100 °. Then, as schematically shown in FIG.
0, the force f applied to the blood vessel 100 in the closing direction of the forceps cup 90 and the force f (f
= F. tan θ) is very large as f ≧ F. Therefore, the blood vessel 100 slides out from between the forceps cup 90,
Often not well picked.
【００１０】そこで本発明は、ポリープを高周波切除し
た後の出血部位の血管等を容易かつ確実に挟んで止血す
ることができる内視鏡用ホットバイオプシー鉗子を提供
することを目的とする。Accordingly, an object of the present invention is to provide a hot biopsy forceps for an endoscope which can easily and surely pinch a blood vessel or the like at a bleeding site after a polyp has been subjected to high frequency resection to stop bleeding.
【００１１】[0011]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡用ホットバイオプシー鉗子は、高周
波電源に接続されて手元側からの遠隔操作によって開閉
駆動される一対の鉗子カップを先端部分に有し、内視鏡
の鉗子チャンネルに挿通して使用される内視鏡用ホット
バイオプシー鉗子において、上記鉗子カップの最大開き
角を中心軸線に対して１０°ないし３０°にしたことを
特徴とする。In order to achieve the above object, a hot biopsy forceps for an endoscope according to the present invention is connected to a high frequency power supply and driven by a remote operation from a hand side to open and close a pair of forceps cups. In the hot biopsy forceps for an endoscope which is used by being inserted through a forceps channel of an endoscope, the maximum opening angle of the forceps cup is set to 10 ° to 30 ° with respect to a central axis. It is characterized by.
【００１２】なお、上記一対の鉗子カップの先端の最大
開き幅を２ｍｍないし３ｍｍの範囲にするとよく、さら
に、上記鉗子カップの縁部に、歯状の凹凸が形成されて
いてもよい。The maximum opening width of the tip of the pair of forceps cups may be in the range of 2 mm to 3 mm, and the edge of the forceps cup may be formed with tooth-like irregularities.
【００１３】また、上記鉗子カップの縁部の噛み合わせ
面が、０．１ｍｍ〜０．５ｍｍの幅を有しているとよ
い。[0013] The engagement surface of the edge portion of the forceps cup may have a width of 0.1 mm to 0.5 mm.
【００１４】[0014]
【発明の実施の形態】図面を参照して本発明の実施の形
態を説明する。図２は、内視鏡１を通じてホットバイオ
プシー鉗子１０が使用される状態を示しており、ホット
バイオプシー鉗子１０の可撓性のあるシャフト部１０ａ
が内視鏡１の鉗子チャンネル１ａに挿通され、ホットバ
イオプシー鉗子１０の先端部１０ｂで患者２００の体内
の患部の処置が行われる。Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows a state in which the hot biopsy forceps 10 is used through the endoscope 1, and the flexible shaft portion 10a of the hot biopsy forceps 10 is shown.
Is inserted into the forceps channel 1 a of the endoscope 1, and a treatment of an affected part in the body of the patient 200 is performed by the distal end portion 10 b of the hot biopsy forceps 10.
【００１５】患者２００には、接触面積の広い患者電極
板３が接触させてあり、ホットバイオプシー鉗子１０の
手元側に設けられた操作部１０ｃと高周波電源装置２と
の間、及び患者電極板３と高周波電源装置２との間は、
各々電気コード４，５によって接続されている。６は、
内視鏡１を患者電極板３と同電位にさせるためのアース
用コードである。A patient electrode plate 3 having a large contact area is brought into contact with the patient 200. The patient electrode plate 3 is provided between the operation unit 10c provided on the hand side of the hot biopsy forceps 10 and the high-frequency power supply device 2, and between the patient electrode plate 3 and the patient. And the high-frequency power supply 2
They are connected by electric cords 4 and 5, respectively. 6 is
This is a grounding cord for making the endoscope 1 have the same potential as the patient electrode plate 3.
【００１６】図３はホットバイオプシー鉗子１０を示し
ており、操作部１０ｃに配置されたスライダー１１を移
動操作することにより、シャフト部１０ａ内に進退自在
に通された操作ワイヤが軸線方向に移動して、先端部１
０ｂに設けられた鉗子カップが開閉する。FIG. 3 shows the hot biopsy forceps 10, in which the operation wire passed through the shaft portion 10a so as to be able to advance and retreat is moved in the axial direction by moving the slider 11 arranged on the operation portion 10c. And the tip 1
The forceps cup provided in Ob opens and closes.
【００１７】電気コード６が接続されるコネクタ１２は
スライダー１１に設けられていて、操作ワイヤを介して
先端部１０ｂの鉗子カップと電気的につながっている。
したがって、高周波電源装置２から先端部１０ｂの鉗子
カップに対して高周波電流が供給される。A connector 12 to which the electric cord 6 is connected is provided on the slider 11, and is electrically connected to a forceps cup at the distal end portion 10b via an operation wire.
Therefore, a high-frequency current is supplied from the high-frequency power supply device 2 to the forceps cup at the distal end portion 10b.
【００１８】図４は、ホットバイオプシー鉗子１０の先
端部１０ｂを示している。１３は、シャフト部１０ａを
全長にわたって構成する密巻きコイルパイプであり、そ
の外周面には、電気絶縁性の外皮チューブ１４が被覆さ
れている。１５は操作ワイヤである。FIG. 4 shows the tip 10b of the hot biopsy forceps 10. Reference numeral 13 denotes a tightly wound coil pipe which constitutes the shaft portion 10a over the entire length, and an outer peripheral surface thereof is covered with an electrically insulating outer tube 14. Reference numeral 15 denotes an operation wire.
【００１９】先端部１０ｂの本体１６は、一対の平行な
アーム状に形成されたリンク機構支持部１６ａと、コイ
ルパイプ１３の先端に連結される筒状部１６ｂとからな
っている。The main body 16 of the distal end portion 10b comprises a pair of parallel arm-shaped link mechanism supporting portions 16a and a cylindrical portion 16b connected to the distal end of the coil pipe 13.
【００２０】リンク機構支持部１６ａの先端側の部分に
は、一対の鉗子カップ１７が支軸１８によって回転自在
に支持されていて、その鉗子カップ１７を開閉駆動する
ためのリンク機構１９が、リンク機構支持部１６ａ内に
配置されている。A pair of forceps cups 17 are rotatably supported by a support shaft 18 at the distal end portion of the link mechanism support portion 16a. A link mechanism 19 for opening and closing the forceps cup 17 is provided with a link. It is arranged in the mechanism support 16a.
【００２１】コイルパイプ１３内に軸線方向に進退自在
に挿通された操作ワイヤ１５の先端は、リンク機構１９
に連結されたワイヤつなぎ２０に固着されており、操作
ワイヤ１５が進退操作されると、リンク機構１９がパン
タグラフ状に作動して鉗子カップ１７が開閉される。The distal end of the operation wire 15 inserted in the coil pipe 13 so as to be able to advance and retreat in the axial direction is
When the operation wire 15 is operated forward and backward, the link mechanism 19 operates in a pantograph shape, and the forceps cup 17 is opened and closed.
【００２２】あい対向して配置された一対の鉗子カップ
１７の縁部には、複数の溝１７ａが適宜の間隔をあけて
軸線と直角の方向に形成されていて、それによって、鉗
子カップ１７の縁部が鰐口の歯状に形成されている。A plurality of grooves 17a are formed at the edges of the pair of forceps cups 17 arranged opposite to each other at appropriate intervals in a direction perpendicular to the axis. The edge is formed in the shape of a crocodile mouth.
【００２３】図１は、鉗子カップ１７が最大限に開かれ
た状態を示しており、鉗子カップ１７の先端の最大開き
幅Ｗは２ｍｍないし３ｍｍに形成され、中心軸線に対す
る鉗子カップ１７の最大開き角θは１０°ないし３０°
に設定されている。FIG. 1 shows a state in which the forceps cup 17 is opened to the maximum, the maximum opening width W of the tip of the forceps cup 17 is formed to be 2 to 3 mm, and the maximum opening width of the forceps cup 17 with respect to the center axis line is shown. Angle θ is 10 ° to 30 °
Is set to
【００２４】図５は、血管１００が鉗子カップ１７に挟
まれた状態を略示しており、鉗子カップ１７の閉じ方向
に血管１００に加わる力をＦとすると、ｆ＝Ｆ．ｔａｎ
θの力が、血管１００を鉗子カップ１７の間から押し出
す方向に加わる。血管１００が一対の鉗子カップ１７の
間から滑りださないようにするためには、ｆが小さい方
がよい。FIG. 5 schematically shows a state in which the blood vessel 100 is sandwiched between the forceps cup 17. If the force applied to the blood vessel 100 in the closing direction of the forceps cup 17 is F, f = F. tan
The force of θ is applied in a direction in which the blood vessel 100 is pushed out from between the forceps cups 17. In order to prevent the blood vessel 100 from slipping out between the pair of forceps cups 17, it is better that f is small.
【００２５】図６は、θ＝４５°、θ＝３０°及びθ＝
１５°の各々の場合の、鉗子カップ１７が血管１００を
押圧する力Ｆと血管１００を押し出そうとする力ｆを図
示したものである。FIG. 6 shows that θ = 45 °, θ = 30 °, and θ =
The force F by which the forceps cup 17 presses the blood vessel 100 and the force f by which the forceps cup 17 pushes out the blood vessel 100 are illustrated in each case of 15 °.
【００２６】θ＝４５°の場合はｆ＝Ｆであり、血管１
００を押し出そうとする力が大きいので、鉗子カップ１
７で血管１００を摘む際に血管１００が鉗子カップ１７
の間から滑り出しやすい。When θ = 45 °, f = F, and the blood vessel 1
00 is large, so forceps cup 1
When the blood vessel 100 is picked up in step 7, the blood vessel 100 is
Easy to slide out between.
【００２７】θ＝３０°の場合はｆ＝０．５８・Ｆであ
り、血管１００を押し出そうとする力が血管１００を押
圧する力の５８％と半分程度に減少する。そして、いっ
たん鉗子カップ１７で血管１００を押圧すれば、図７に
示されるように、血管１００は鉗子カップ１７によって
θ＝２０°程度になるまで押し潰される。When θ = 30 °, f = 0.58 · F, and the force for pushing out the blood vessel 100 is reduced to about half of the force for pressing the blood vessel 100, which is about 58%. Then, once the blood vessel 100 is pressed by the forceps cup 17, the blood vessel 100 is crushed by the forceps cup 17 until θ = about 20 ° as shown in FIG.
【００２８】すると、θ＝２０°の場合はｆ＝０．３６
・Ｆになり、血管１００を押し出そうとする力は押圧力
の３分の１程度まで減少する。したがって、血管１００
が鉗子カップ１７の間から滑り出さない。Then, when θ = 20 °, f = 0.36
F, the force for pushing out the blood vessel 100 is reduced to about one third of the pressing force. Therefore, the blood vessel 100
Does not slide out from between the forceps cups 17.
【００２９】θ＝１５°の場合はｆ＝０．２７・Ｆにな
り、血管１００を押し出そうとする力は押圧力の４分の
１近くまで減少して、血管１００を鉗子カップ１７の間
に確実に把持することができる。When θ = 15 °, f = 0.27 · F, and the force for pushing out the blood vessel 100 is reduced to almost one-fourth of the pressing force. It can be reliably held in between.
【００３０】したがって、中心軸線に対する鉗子カップ
１７の最大開き角θは３０°以下に設定するのがよい。
ただし、θを余り小さくすると、必要な開き幅を得るの
に鉗子カップ１７の長さが長くなりすぎる等の不利な面
が出てくるので、θは１０°以上とするのがよい。Therefore, the maximum opening angle θ of the forceps cup 17 with respect to the center axis is preferably set to 30 ° or less.
However, if θ is made too small, disadvantageous surfaces such as the length of the forceps cup 17 becoming too long to obtain a required opening width appear, so that θ is preferably set to 10 ° or more.
【００３１】図８は、ポリープが切除された後の茎部１
０１の断端から突出した血管１００を、鉗子カップ１７
で摘もうとする際の状態を示しており、一対の鉗子カッ
プ１７の最大開き幅Ｗが３ｍｍのもので、直径１ｍｍ程
度の血管１００を摘もうとする場合を例示している。FIG. 8 shows the stem 1 after the polyp has been excised.
01 is inserted into the forceps cup 17
Shows a state in which the maximum opening width W of the pair of forceps cups 17 is 3 mm and the blood vessel 100 having a diameter of about 1 mm is to be removed.
【００３２】このように、鉗子カップ１７の最大開き幅
が３ｍｍを越えないようにすると、ポリープが切除され
た後の茎部１０１を鉗子カップ１７で挟んでしまうこと
が殆どなくなり、また、鉗子カップ１７と血管１００と
の間に隙間があき過ぎないので、血管１００を容易に把
持することができる。If the maximum opening width of the forceps cup 17 does not exceed 3 mm, the stalk 101 from which the polyp has been cut is hardly caught by the forceps cup 17. Since there is not too much gap between the blood vessel 17 and the blood vessel 100, the blood vessel 100 can be easily grasped.
【００３３】そして、出血中の血管１００を鉗子カップ
１７で把持したら、鉗子カップ１７に高周波電流を流す
ことによって、血管１００の切り口部分を焼灼凝固して
止血を行うことができる。When the bleeding blood vessel 100 is grasped by the forceps cup 17, a high-frequency current is applied to the forceps cup 17 to cauterize and coagulate the cut portion of the blood vessel 100 to stop the hemostasis.
【００３４】血管１００を一対の鉗子カップ１７の間に
挟み込むように狙う際には、開いた鉗子カップ１７と血
管１００との間に、ある程度の隙間が必要である。隙間
が小さすぎると、血管１７を摘むのが困難になる。When aiming to sandwich the blood vessel 100 between the pair of forceps cups 17, a certain gap is required between the opened forceps cup 17 and the blood vessel 100. If the gap is too small, it becomes difficult to pinch the blood vessel 17.
【００３５】したがって、鉗子カップ１７の最大開き幅
Ｗは２ｍｍ以上に設定するのがよく、３ｍｍに設定すれ
ば、直径が２ｍｍ程度の血管１００まで容易に摘むこと
ができる。Therefore, the maximum opening width W of the forceps cup 17 is preferably set to 2 mm or more, and if it is set to 3 mm, it is possible to easily pick up a blood vessel 100 having a diameter of about 2 mm.
【００３６】図９及び図１０は、本発明の第２の実施の
形態の内視鏡用ホットバイオプシー鉗子を示しており、
鉗子カップ１７の先側部分の太さを細く形成したもので
ある。図１０の平面部分断面図に示されるように、鉗子
カップ１７の縁部の噛み合わせ面１７ｂは、例えば０．
１ｍｍ〜０．５ｍｍの幅の平坦な面を有していて、摘ま
れる血管１００を切断しないようになっている。FIGS. 9 and 10 show a hot biopsy forceps for an endoscope according to a second embodiment of the present invention.
The tip portion of the forceps cup 17 is formed to be thin. As shown in the plan partial sectional view of FIG. 10, the engagement surface 17b of the edge of the forceps cup 17 is, for example, 0.1 mm.
It has a flat surface with a width of 1 mm to 0.5 mm so as not to cut the blood vessel 100 to be picked.
【００３７】なお、本発明は上記各実施の形態に限定さ
れるものではなく、例えば鉗子カップ１７には必ずしも
溝１７ａを設けなくてもよく、使用目的等によっては、
鉗子カップ１７の縁部を鋭利に形成してもよい。The present invention is not limited to the above embodiments. For example, the forceps cup 17 does not necessarily have to have the groove 17a.
The edge of the forceps cup 17 may be formed sharp.
【００３８】[0038]
【発明の効果】本発明によれば、鉗子カップの最大開き
角を中心軸線に対して１０°ないし３０°にしたことに
より、ポリープを高周波切除した後の出血部位等におい
て、一対の鉗子カップの間に血管を挟んだ時に、血管が
鉗子カップの間から滑り出し難いので、出血元の血管を
容易且つ確実に摘んで止血することができる。According to the present invention, by setting the maximum opening angle of the forceps cup to 10 ° to 30 ° with respect to the central axis, a pair of forceps cups can be formed at a bleeding site or the like after polyp resection by high frequency. When a blood vessel is sandwiched therebetween, it is difficult for the blood vessel to slide out from between the forceps cups, so that the blood vessel at the bleeding source can be easily and reliably picked and stopped.
【００３９】また、一対の鉗子カップの先端の最大開き
幅を２ｍｍないし３ｍｍとすることにより、ポリープの
茎部に引っ掛かることなく鉗子カップで出血元の血管等
をより容易かつ確実に血管を摘むことができる。Further, by setting the maximum opening width of the tip of the pair of forceps cups to 2 mm to 3 mm, the blood vessel or the like from which bleeding is caused can be more easily and reliably picked up by the forceps cup without being caught on the stem of the polyp. Can be.
【図１】本発明の第１の実施の形態の内視鏡用ホットバ
イオプシー鉗子の鉗子カップが開いた状態の先端部分の
側面部分断面図である。FIG. 1 is a partial side sectional view of a distal end portion of a hot biopsy forceps for an endoscope according to a first embodiment of the present invention with a forceps cup opened.
【図２】本発明の第１の実施の形態の内視鏡用ホットバ
イオプシー鉗子が使用されるシステムの全体略示図であ
る。FIG. 2 is an overall schematic view of a system using the hot biopsy forceps for an endoscope according to the first embodiment of the present invention.
【図３】本発明の第１の実施の形態の内視鏡用ホットバ
イオプシー鉗子の全体外観図である。FIG. 3 is an overall external view of a hot biopsy forceps for an endoscope according to the first embodiment of the present invention.
【図４】本発明の第１の実施の形態の内視鏡用ホットバ
イオプシー鉗子の鉗子カップが閉じた状態の先端部分の
側面部分断面図である。FIG. 4 is a partial side sectional view of a distal end portion of the hot biopsy forceps for an endoscope according to the first embodiment of the present invention in a state where a forceps cup is closed.
【図５】本発明の第１の実施の形態の機能を説明するた
めの鉗子カップ部の略示図である。FIG. 5 is a schematic view of a forceps cup portion for explaining a function of the first embodiment of the present invention.
【図６】本発明の第１の実施の形態の機能を説明するた
めの線図である。FIG. 6 is a diagram for explaining functions of the first embodiment of the present invention.
【図７】本発明の第１の実施の形態の機能を説明するた
めの血管の略示断面図である。FIG. 7 is a schematic sectional view of a blood vessel for explaining a function of the first embodiment of the present invention.
【図８】本発明の第１の実施の形態の動作を説明するた
めの被処置部の断面図である。FIG. 8 is a cross-sectional view of a portion to be treated for explaining the operation of the first embodiment of the present invention.
【図９】本発明の第２の実施の形態の内視鏡用ホットバ
イオプシー鉗子の先端部分の側面部分断面図である。FIG. 9 is a partial side sectional view of a distal end portion of an endoscope hot biopsy forceps according to a second embodiment of the present invention.
【図１０】本発明の第２の実施の形態の内視鏡用ホット
バイオプシー鉗子の先端部分の平面部分断面図である。FIG. 10 is a plan partial cross-sectional view of a distal end portion of an endoscope hot biopsy forceps according to a second embodiment of the present invention.
【図１１】従来の内視鏡用ホットバイオプシー鉗子の動
作を説明するための被処置部の断面図である。FIG. 11 is a cross-sectional view of a portion to be treated for explaining the operation of a conventional hot biopsy forceps for an endoscope.
【図１２】従来の内視鏡用ホットバイオプシー鉗子の機
能を説明するための線図である。FIG. 12 is a diagram illustrating the function of a conventional hot biopsy forceps for an endoscope.
１ 内視鏡 １ａ 鉗子チャンネル ２ 高周波電源装置 １０ ホットバイオプシー鉗子 １０ａ シャフト部 １０ｂ 先端部 １７ 鉗子カップ １００ 血管 DESCRIPTION OF SYMBOLS 1 Endoscope 1a Forceps channel 2 High frequency power supply device 10 Hot biopsy forceps 10a Shaft section 10b Tip section 17 Forceps cup 100 Blood vessel
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32391896AJP3836551B2 (en) | 1996-12-04 | 1996-12-04 | Endoscopic hot biopsy forceps |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32391896AJP3836551B2 (en) | 1996-12-04 | 1996-12-04 | Endoscopic hot biopsy forceps |
| Publication Number | Publication Date |
|---|---|
| JPH10155798Atrue JPH10155798A (en) | 1998-06-16 |
| JP3836551B2 JP3836551B2 (en) | 2006-10-25 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32391896AExpired - Fee RelatedJP3836551B2 (en) | 1996-12-04 | 1996-12-04 | Endoscopic hot biopsy forceps |
| Country | Link |
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| JP (1) | JP3836551B2 (en) |
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