JPH0532099Y2 - - Google Patents
Info
- Publication number
- JPH0532099Y2 JPH0532099Y2 JP11346887U JP11346887U JPH0532099Y2 JP H0532099 Y2 JPH0532099 Y2 JP H0532099Y2 JP 11346887 U JP11346887 U JP 11346887U JP 11346887 U JP11346887 U JP 11346887U JP H0532099 Y2 JPH0532099 Y2 JP H0532099Y2
- Authority
- JP
- Japan
- Prior art keywords
- flexible tube
- endoscope
- incision
- tube
- conductive wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001839 endoscopy Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 description 16
- 238000003780 insertion Methods 0.000 description 16
- 238000005452 bending Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 210000005070 sphincter Anatomy 0.000 description 3
- 230000002183 duodenal effect Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010014405 Electrocution Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は、内視鏡用高周波切開具、詳しく
は、経内視鏡的に体腔内に導入し、内視鏡の観察
下で組織の電気切開を行なう内視鏡用高周波切開
具に関する。[Detailed description of the invention] [Field of industrial application] This invention is a high-frequency cutting tool for an endoscope, specifically, it is introduced into a body cavity endoscopically and cuts tissue under observation with an endoscope. The present invention relates to a high-frequency cutting tool for an endoscope that performs electrical cutting.
［従来の技術］
従来、内視鏡の処置具挿通用チヤンネルに挿通
して使用される内視鏡用高周波切開具は、第６図
に示すように、可撓性チユーブ１の先端弯曲部の
一側面に軸方向に前後して透孔２，３を穿設し、
電気切開用の導電性ワイヤ４の先端を上記可撓性
チユーブ１中の先端部に固着し、同ワイヤ４を先
端寄りの上記透孔２を通して可撓性チユーブ１の
外側に導出して切開部５を形成させると共に、同
導電性ワイヤ４を、基端部寄りの上記透孔３より
再び可撓性チユーブ１内に進退自在に導入し、そ
の基端を図示しない手元操作部まで延伸して構成
している。そして、この手元操作部で導電性ワイ
ヤ４の基端を牽引操作することによつて、上記導
電性ワイヤ４を弓の弦状に張設するようにチユー
ブの先端部を弯曲させるとともに、上記導電性ワ
イヤ４に高周波電流を通電して生体腔内における
組織の高周波切開を行なうようになつている。[Prior Art] Conventionally, a high-frequency cutting tool for an endoscope, which is used by being inserted into a channel for inserting a treatment tool of an endoscope, has a curved distal end of a flexible tube 1, as shown in FIG. Holes 2 and 3 are bored in one side in front and back in the axial direction,
The tip of a conductive wire 4 for electrical incision is fixed to the tip of the flexible tube 1, and the wire 4 is guided to the outside of the flexible tube 1 through the through hole 2 near the tip to make an incision. At the same time, the conductive wire 4 is introduced into the flexible tube 1 through the through hole 3 near the proximal end so as to be freely advanced and retracted, and its proximal end is extended to a hand-held operation part (not shown). It consists of By pulling the base end of the conductive wire 4 with this hand-held operation part, the distal end of the tube is curved so that the conductive wire 4 is strung in a bowstring shape, and the conductive wire 4 is A high-frequency current is applied to the sex wire 4 to perform high-frequency incision of tissue within the body cavity.
ところで、可撓性チユーブ１の一側面に導電性
ワイヤ４を張設させる、この形式の高周波切開具
においては、内視鏡の処置具挿通用チヤンネルか
ら可撓性チユーブ１を突出させ、導電性ワイヤ４
を張設したとき、同張設ワイヤの方向が所望の方
向に向かない場合がある。従つて、これを防止す
るため、予め可撓性チユーブ１の先端弯曲部に所
望の方向の曲がり癖をつけてから内視鏡の処置具
挿通用チヤンネルに挿入するようにしているが、
可撓性チユーブ１に始めから異常な曲がり癖があ
ると、新たに正規の曲がり癖をつけることが困難
である。そこで、実公昭61−4325号公報記載の考
案では、第６図に示す如く、可撓性チユーブ１内
の先端弯曲部に、板面が導電性ワイヤ４の張設方
向と直角方向に延在する弾性板１３を配設し、こ
れに曲がり癖を付与することにより、導電性ワイ
ヤ４の張設方向性を確実にするようにしている。 By the way, in this type of high-frequency cutting tool in which a conductive wire 4 is stretched on one side of the flexible tube 1, the flexible tube 1 is protruded from a channel for inserting a treatment instrument of an endoscope, and the conductive wire 4 is stretched on one side of the flexible tube 1. wire 4
When the wire is stretched, the direction of the stretched wire may not be oriented in the desired direction. Therefore, in order to prevent this, the curved end of the flexible tube 1 is bent in the desired direction before being inserted into the treatment instrument insertion channel of the endoscope.
If the flexible tube 1 has an abnormal bending tendency from the beginning, it is difficult to create a new normal bending tendency. Therefore, in the invention described in Japanese Utility Model Publication No. 61-4325, as shown in FIG. By disposing an elastic plate 13 and giving it a bending tendency, the directionality in which the conductive wire 4 is stretched is ensured.
［考案が解決しようとする問題点］
ところで、上記弾性板１３を可撓性チユーブ１
内の先端弯曲部に配設すると、この弾性板１３
は、その長さが切開部５の長さよりも基端部がわ
に大きく延出部１３ａが延びているため、内視鏡
の挿入に伴つてその処置具挿通用チヤンネルに第
７図、第８図に示すような互いに逆方向の弯曲箇
所が複数個形成された場合、弾性板１３が長すぎ
て、高周波切開具６を内視鏡７から突出する際
に、正規の方向を向かずに突出してしまうという
欠点があつた。即ち、第６図に示すような曲がり
癖１１をつけた高周波切開具６を、例えば第７図
に示すように胃を経由して十二指腸乳頭括約筋２
５を切開するために内視鏡７に挿入して使用する
場合、第８図に示すように、内視鏡挿入部８の第
１の曲部９では、可撓性チユーブ１の曲がり癖１
１が内視鏡挿入部８の弯曲方向に合致しているの
で、可撓性チユーブ１は、難なくこの箇所ａを通
過できる。さらに、可撓性チユーブ１を押し進
め、逆方向に弯曲した弯曲部１０に達した場合、
弾性板１３の延出端部１３ａが、未だ挿入部８の
第１の曲部９の中にあるため、可撓性チユーブ１
が曲がり切れず、弯曲部１０の第２の曲部１２の
弯曲度と可撓性チユーブ１の曲がり癖１１による
弯曲度とが一致しない。従つて、可撓性チユーブ
１が回動して切開部５が第２の曲部１２の曲率中
心側に位置すべきにも拘らず、可撓性チユーブ１
が回動できないため、切開部５が第２の曲部１２
の曲率中心と反対側に位置したままで、この箇所
ｂを通過してしまうことになる。そして、このま
ま可撓性チユーブ１を押し進めると、鉗子起上台
１５にガイドされて、チユーブ先端はチヤンネル
出口より突出するが、箇所ｃのように、切開部５
が所望の方向に対して逆向き状態で内視鏡７より
突出してしまうことになる。[Problems to be solved by the invention] By the way, the elastic plate 13 is replaced by the flexible tube 1.
When the elastic plate 13 is disposed at the curved end of the
Since the extending portion 13a has a longer proximal end length than the length of the incision portion 5, when the endoscope is inserted, the channel for inserting the treatment instrument is inserted into the channel shown in FIGS. If a plurality of curved portions are formed in opposite directions as shown in FIG. It had the drawback of standing out. That is, a high-frequency incision tool 6 having a bending tendency 11 as shown in FIG. 6 is inserted into the duodenal papillary sphincter muscle 2 via the stomach as shown in FIG.
When the flexible tube 1 is inserted into the endoscope 7 for incision, as shown in FIG.
1 matches the curved direction of the endoscope insertion portion 8, the flexible tube 1 can pass through this portion a without difficulty. Furthermore, when the flexible tube 1 is pushed forward and reaches the curved part 10 curved in the opposite direction,
Since the extending end portion 13a of the elastic plate 13 is still within the first curved portion 9 of the insertion portion 8, the flexible tube 1
is not fully bent, and the degree of curvature of the second curved portion 12 of the curved portion 10 and the degree of curvature due to the bending tendency 11 of the flexible tube 1 do not match. Therefore, even though the flexible tube 1 should rotate and the incision 5 should be located on the curvature center side of the second curved section 12, the flexible tube 1
cannot rotate, so the incision 5 is connected to the second curved part 12.
It will pass through point b while remaining located on the opposite side of the center of curvature. If the flexible tube 1 is pushed forward in this state, it will be guided by the forceps elevator 15 and the tip of the tube will protrude from the channel outlet, but as shown in point c, the tip of the tube will protrude from the channel outlet.
ends up protruding from the endoscope 7 in the opposite direction to the desired direction.
従つて、本考案の目的は、可撓性チユーブが内
視鏡のジグザグ状弯曲部や鉗子起上台を通過した
ときに、可撓性チユーブが正規の方向に回動し、
突出時に切開部が正しい方向を向くように内視鏡
用高周波切開具を提供するにある。 Therefore, the purpose of the present invention is to rotate the flexible tube in the normal direction when the flexible tube passes through the zigzag curved part of the endoscope or the forceps elevator.
To provide a high-frequency cutting tool for an endoscope so that an incision part faces in the correct direction when protruding.
［問題点を解決するための手段および作用］
本考案では、上記問題点を解決するために、第
１図の概念図に示すように内視鏡７を通して体腔
内に導入される可撓性チユーブ１と、この可撓性
チユーブの先端寄りの側面に穿設されたワイヤ挿
通用の複数の透孔２，３と、上記可撓性チユーブ
の基端側から同基端寄りの上記透孔３を通つて可
撓性チユーブ外に導かれ、切開部５を形成したの
ち、先端を上記可撓性チユーブの先端寄りの上記
透孔２よりチユーブ内に挿入して先端部に固定さ
れ、進退自在にチユーブ内に配設された高周波切
開用導電性ワイヤ４と、上記可撓性チユーブの先
端部内に、板面が上記導電性ワイヤの張設方向と
直角方向に延在して配設された弾性板１３とを具
備する高周波切開具６において、上記弾性板１３
の長さl2を、上記内視鏡７の弯曲部１０の長さl1
より短くしたことを特徴とするものであつて、パ
ピロトミーナイフとも呼ばれる、この切開具の可
撓性チユーブ内に、内視鏡の湾曲部１０の長さl1
より短い長さl2の弾性板をその板面が切開部の張
設方向と直角方向に延在するように配設し、内視
鏡の弯曲部を通過する際、高周波切開具につけた
曲がり癖が弯曲部の曲がりに常に一致するように
可撓性チユーブが動けるようにしたものである。[Means and effects for solving the problem] In order to solve the above problem, the present invention uses a flexible tube introduced into the body cavity through the endoscope 7 as shown in the conceptual diagram of FIG. 1, a plurality of through holes 2 and 3 for wire insertion, which are drilled on the side surface of the flexible tube near the distal end, and the through hole 3 located from the proximal end of the flexible tube toward the same proximal end. After the incision 5 is formed, the tip is inserted into the tube through the through hole 2 near the tip of the flexible tube and fixed to the tip, allowing it to move forward and backward. A conductive wire 4 for high-frequency cutting is disposed inside the tube, and a plate surface is disposed within the tip of the flexible tube in a direction perpendicular to the direction in which the conductive wire is stretched. In the high-frequency incision tool 6 comprising an elastic plate 13, the elastic plate 13
The length l 2 of the endoscope 7 is the length l 1 of the curved part 10 of the endoscope 7.
In the flexible tube of this dissection tool, which is characterized by a shorter length and is also called a papillotomy knife, the length l 1 of the curved part 10 of the endoscope is inserted.
An elastic plate with a shorter length l2 is arranged so that its plate surface extends in a direction perpendicular to the direction in which the incision is stretched, and when passing through the curved part of the endoscope, the bending of the high-frequency incision tool is avoided. The flexible tube is movable so that the curve always matches the curve of the curved part.
［実施例］
以下、図面を参照して本考案を具体的に説明す
る。第２図〜第３図は、本考案の第１実施例に係
る内視鏡用高周波切開具の断面図である。なお、
前記第６図〜第８図に示した従来例における構成
部材と全く同一の構成部材については、同一符号
を付すに止め、その説明は省略する。[Example] The present invention will be specifically described below with reference to the drawings. 2 and 3 are cross-sectional views of a high-frequency cutting tool for an endoscope according to a first embodiment of the present invention. In addition,
Components that are exactly the same as those in the conventional example shown in FIGS. 6 to 8 are designated by the same reference numerals, and their explanations will be omitted.
第２図において、合成樹脂材などからなる可撓
性チユーブ１は、その先端部の側面にチユーブの
軸方向の前後方向に離間して一対の透孔２，３が
穿設されている。この可撓性チユーブ１内には、
板面が上記透孔２，３に対向して配設された帯状
金属板から成る弾性板１３Ａと、進退自在に挿入
された電気切開用の導電性ワイヤ４とが内蔵され
ている。上記導電性ワイヤ４の先端部は、上記基
端部寄りの透孔３を通して外部に導出され、そし
て、先端部寄りの透孔２を通して内部に導入され
て、その先端は上記弾性板１３Ａの先端部に固着
されている。従つて、導電性ワイヤ４は、透孔
２，３間において可撓性チユーブ１の外部に露出
され、切開部５を形成している。第３図は、上記
第２図のＡ−Ａ線に沿う断面を示したもので、導
電性ワイヤ４が、可撓性チユーブ１の外側に切開
部５を形成している。そして、上記弾性板１３Ａ
の長さl2は、第１図に示すように内視鏡７の弯曲
部１０の長さl1より短くなるように形成されてい
る。 In FIG. 2, a flexible tube 1 made of a synthetic resin material or the like has a pair of through holes 2 and 3 formed in the side surface of its distal end part at a distance from each other in the axial direction of the tube. Inside this flexible tube 1,
An elastic plate 13A made of a band-shaped metal plate whose plate surface faces the through-holes 2 and 3, and a conductive wire 4 for electrocution inserted so as to be movable forward and backward are built-in. The distal end of the conductive wire 4 is led out through the through hole 3 near the proximal end, and introduced into the interior through the through hole 2 near the distal end. It is fixed to the part. Therefore, the conductive wire 4 is exposed to the outside of the flexible tube 1 between the through holes 2 and 3, forming an incision 5. FIG. 3 shows a cross section taken along line A--A in FIG. 2, in which the conductive wire 4 forms an incision 5 on the outside of the flexible tube 1. And the elastic plate 13A
The length l 2 of the curved portion 10 of the endoscope 7 is shorter than the length l 1 of the curved portion 10 of the endoscope 7, as shown in FIG.
第２図に戻つて、上記可撓性チユーブ１の手元
側には、継手管１６が嵌着されており、この継手
管１６の外側には絶縁性の支持具１７が螺着され
ている。この支持具１７には上記継手管１６の内
径と同径の挿入孔１８が穿設され、この内周面に
はＯリング１９が装着されている。また、この支
持具１７の側壁には上記挿入孔１８と連通する口
金２０が設けられ、同口金２０には造影剤の入つ
た注射筒（図示しない）が接続できるようになつ
ている。更に、上記導電性ワイヤ４の端末部には
補強パイプ２１が嵌着され、この補強パイプ２１
の外周には電気絶縁性を有する絶縁チユーブ２２
が被覆されている。そして、この導電性ワイヤ４
の端末部は補強パイプ２１、絶縁チユーブ２２と
共に上記支持具１７の挿入孔１８を進退自在に貫
通して外部に導出されており、その端部にはジヤ
ツク２３が接続されている。このジヤツク２３に
はカバー２４が螺着されているとともに高周波発
生装置（図示しない）に電気的に接続されるよう
になつている。 Returning to FIG. 2, a joint pipe 16 is fitted onto the proximal side of the flexible tube 1, and an insulating support 17 is screwed onto the outside of the joint pipe 16. This support 17 has an insertion hole 18 having the same diameter as the inner diameter of the joint tube 16, and an O-ring 19 is attached to the inner peripheral surface of the insertion hole 18. A side wall of the support 17 is provided with a cap 20 that communicates with the insertion hole 18, and a syringe (not shown) containing a contrast medium can be connected to the cap 20. Further, a reinforcing pipe 21 is fitted to the end portion of the conductive wire 4, and this reinforcing pipe 21
An insulating tube 22 having electrical insulation properties is provided on the outer periphery of the
is covered. And this conductive wire 4
The terminal portion thereof, together with the reinforcing pipe 21 and the insulating tube 22, passes freely through the insertion hole 18 of the support 17 and is led out to the outside, and a jack 23 is connected to the end portion thereof. A cover 24 is screwed onto the jack 23 and is electrically connected to a high frequency generator (not shown).
このように構成されている第１実施例は次のよ
うに作動する。 The first embodiment configured in this manner operates as follows.
第４図は、このように構成されている第１実施
例の高周波切開具を内視鏡７の処置具挿入部８内
の処置具挿通用チヤンネル内に導入して使用する
態様を示したものである。まず、可撓性チユーブ
１の切開部５上を親指でしごき、切開部５を内側
とする曲がり癖をつけておく。この後、第４図の
ように内視鏡７の処置具挿入部８の処置具挿通用
チヤンネルを介して体腔内に挿入すると、挿入部
８の箇所ａにおいては、第１の曲部９の弯曲方向
と切開部５の曲がり癖の方向とが挿入部８内で一
致しているので、難なくこの箇所ａを通過する。
さらに可撓性チユーブ１を押し進めて箇所ｂに達
すると、内視鏡７の弯曲部１０で逆方向の第２の
曲部１２に遭遇するが、このとき弾性板１３Ａ
は、その長さが内視鏡７の弯曲部１０より十分短
いので、その端末部は内視鏡挿入部８の上記第１
の曲部９から完全に離脱している。従つて、弯曲
部１０における第２の曲部１２を、可撓性チユー
ブ１は第２の曲部１２と曲がり癖の方向が一致す
るように、回動しながら通過する。そして、更に
可撓性チユーブ１を押し進め、内視鏡７の先端の
チヤンネル出口から突出させると、箇所ｃにて切
開部５が正規の方向を向いた状態で突出すること
になる。 FIG. 4 shows a mode in which the high-frequency cutting instrument of the first embodiment configured as described above is introduced into the treatment instrument insertion channel in the treatment instrument insertion section 8 of the endoscope 7 and used. It is. First, squeeze the incision 5 of the flexible tube 1 with your thumb to bend it so that the incision 5 is on the inside. Thereafter, when the endoscope 7 is inserted into the body cavity through the treatment instrument insertion channel of the treatment instrument insertion section 8 as shown in FIG. Since the direction of the curvature and the direction of the curvature of the incision portion 5 coincide within the insertion portion 8, the insertion portion passes through this portion a without difficulty.
When the flexible tube 1 is further pushed forward and reaches point b, it encounters a second curved section 12 in the opposite direction at the curved section 10 of the endoscope 7, but at this time, the elastic plate 13A
is sufficiently shorter than the curved portion 10 of the endoscope 7, so its terminal portion is connected to the first curved portion 10 of the endoscope insertion portion 8.
It completely departs from song section 9. Therefore, the flexible tube 1 passes through the second curved section 12 in the curved section 10 while rotating so that the direction of the bending tendency matches that of the second curved section 12 . Then, when the flexible tube 1 is further pushed forward and protruded from the channel outlet at the distal end of the endoscope 7, the incision 5 will protrude at point c with the incision 5 facing in the normal direction.
そして、このように突出した可撓性チユーブ１
の先端を内視鏡観察下のもとに、例えば十二指腸
乳頭括約筋２５（第７図参照）に導き、手元操作
によつて導電性ワイヤ４を牽引すると、切開部５
は弓の弦状に張設されるので、この状態で高周波
電流を通電し、上記括約筋２５を焼灼切開する。 Then, the flexible tube 1 that protrudes like this
Under endoscopic observation, the tip of the conductive wire 4 is guided to, for example, the duodenal papillary sphincter muscle 25 (see Fig. 7), and the conductive wire 4 is pulled by manual operation.
Since it is stretched in the shape of a bowstring, a high frequency current is applied in this state to cauterize and incise the sphincter muscle 25.
このように本案によれば、弾性板１３Ａの長さ
を内視鏡挿入部８の弯曲部１０の長さより短くし
たので、可撓性チユーブ１が弯曲部１０における
第２の曲部１２を通過する際、第２の曲部１２の
弯曲方向と切開部５の曲がり癖の方向とが一致す
るように、可撓性チユーブ１が回転できる。従つ
て、切開部５が確実に正規の方向を向いて突出さ
れるようになる。 According to the present invention, the length of the elastic plate 13A is made shorter than the length of the curved portion 10 of the endoscope insertion portion 8, so that the flexible tube 1 passes through the second curved portion 12 in the curved portion 10. At this time, the flexible tube 1 can be rotated so that the direction of curvature of the second curved section 12 and the direction of the curvature of the incision section 5 coincide with each other. Therefore, the incision 5 is reliably projected in the correct direction.
第５図は、本考案の第２実施例を示すものであ
る。この実施例では、弾性板１３Ｂに予め板の曲
がり癖２６がつけられている点が、上記第１実施
例と異なつている。そして、弾性板１３Ｂの曲が
り癖２６の曲率中心方向の板面が切開部５のほう
を向くように可撓性チユーブ１内に挿入されてい
る。従つて、その作用は、上記第１実施例と同じ
である。また、弾性板１３Ｂに曲がり癖２６がつ
いているので切開部５の曲がり癖をつけるとき、
曲がり癖が付き易いという副次的効果を発揮す
る。 FIG. 5 shows a second embodiment of the present invention. This embodiment differs from the first embodiment in that the elastic plate 13B has a bending tendency 26 in advance. The elastic plate 13B is inserted into the flexible tube 1 so that the plate surface in the direction of the center of curvature of the bending tendency 26 faces the incision 5. Therefore, its operation is the same as that of the first embodiment. In addition, since the elastic plate 13B has a bending tendency 26, when bending the incision 5,
It exhibits the secondary effect of being prone to bending.
［考案の効果］
以上述べたようにこの考案によれば、可撓性チ
ユーブ内に設けられた弾性板を内視鏡の弯曲部の
長さより短く形成したので、開部を通過する際、
弯曲部の曲がりに一致するように可撓性チユーブ
がチヤンネル内で回転でき、突出時に切開部が確
実に正規の方向を向いた状態で生体腔内における
治療部位に対処できるという顕著な効果が発揮さ
れる。[Effects of the invention] As described above, according to this invention, since the elastic plate provided in the flexible tube is formed to be shorter than the length of the curved part of the endoscope, when passing through the opening,
The flexible tube can be rotated within the channel to match the curve of the curvature, which has the remarkable effect of ensuring that the incision is oriented in the correct direction during extrusion to address the treatment area within the body cavity. be done.
第１図は、本考案の概念図、第２図は、本考案
の第１実施例を示す内視鏡用高周波切開具の要部
縦断面図、第３図は、上記第２図におけるＡ−Ａ
線に沿う断面図。第４図は、上記第１実施例の切
開具の使用態様を示す説明図、第５図は、本考案
の第２実施例を示す内視鏡用高周波切開具の要部
縦断面図、第６図は、従来の内視鏡用高周波切開
具の要部縦断面図、第７，８図は、高周波切開具
を径内視鏡的に切開部に導入する状態をそれぞれ
示す説明図である。
１……可撓性チユーブ、２，３……透孔、４…
…導電性ワイヤ、６……高周波切開具、７……内
視鏡、１０……弯曲部、１３……弾性板。
Fig. 1 is a conceptual diagram of the present invention, Fig. 2 is a longitudinal cross-sectional view of main parts of a high-frequency cutting instrument for an endoscope showing a first embodiment of the present invention, and Fig. 3 is an A in the above-mentioned Fig. 2. -A
A cross-sectional view along the line. FIG. 4 is an explanatory view showing how the incision tool of the first embodiment is used, and FIG. FIG. 6 is a vertical cross-sectional view of the main part of a conventional high-frequency cutting tool for an endoscope, and FIGS. 7 and 8 are explanatory diagrams each showing a state in which the high-frequency cutting tool is introduced into an incision using a radial endoscope. . 1...Flexible tube, 2, 3...Through hole, 4...
... Conductive wire, 6 ... High frequency incision tool, 7 ... Endoscope, 10 ... Curved portion, 13 ... Elastic plate.
Claims (1)
ーブと、この可撓性チユーブの先端寄りの側面に
穿設されたワイヤ挿通用の複数の透孔と、上記可
撓性チユーブの基端側から基端寄りの上記透孔を
通つて可撓性チユーブ外に導かれ、切開部を形成
したのち、先端を上記可撓性チユーブの先端寄り
の上記透孔よりチユーブ内に挿入して先端部に固
定され、進退自在にチユーブ内に配設された高周
波切開用導電性ワイヤと、上記可撓性チユーブの
先端部内に、板面が上記導電性ワイヤの張設方向
と直角方向に延在して配設された弾性板とを具備
する高周波切開具において、 上記弾性板の長さを、上記内視鏡の弯曲部の長
さより短くしたことを特徴とする内視鏡用高周波
切開具。[Scope of Claim for Utility Model Registration] A flexible tube introduced into a body cavity through an endoscope, a plurality of through holes for passing wires drilled on the side surface near the tip of the flexible tube, and the above-mentioned The flexible tube is guided from the proximal side of the flexible tube through the through hole near the proximal end to the outside of the flexible tube, and after an incision is formed, the tip is guided through the through hole near the distal end of the flexible tube. A conductive wire for high-frequency incision is inserted into the tube and fixed to the distal end thereof, and is arranged in the tube so that it can move forward and backward, and the conductive wire whose plate surface is stretched within the distal end of the flexible tube. A high-frequency incision tool comprising an elastic plate extending perpendicularly to the direction, wherein the length of the elastic plate is shorter than the length of the curved part of the endoscope. High-frequency cutting tool for endoscopy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11346887U JPH0532099Y2 (en) | 1987-07-24 | 1987-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11346887U JPH0532099Y2 (en) | 1987-07-24 | 1987-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6419411U JPS6419411U (en) | 1989-01-31 |
| JPH0532099Y2 true JPH0532099Y2 (en) | 1993-08-18 |
Family
ID=31353331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11346887U Expired - Lifetime JPH0532099Y2 (en) | 1987-07-24 | 1987-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532099Y2 (en) |
-
1987
- 1987-07-24 JP JP11346887U patent/JPH0532099Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6419411U (en) | 1989-01-31 |
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