JPH0532100Y2 - - Google Patents
Info
- Publication number
- JPH0532100Y2 JPH0532100Y2 JP2741589U JP2741589U JPH0532100Y2 JP H0532100 Y2 JPH0532100 Y2 JP H0532100Y2 JP 2741589 U JP2741589 U JP 2741589U JP 2741589 U JP2741589 U JP 2741589U JP H0532100 Y2 JPH0532100 Y2 JP H0532100Y2
- Authority
- JP
- Japan
- Prior art keywords
- flexible tube
- elastic plate
- incision
- distal end
- hole
- 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
- 238000003780 insertion Methods 0.000 description 14
- 230000037431 insertion Effects 0.000 description 14
- 238000005452 bending Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000002183 duodenal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 210000000013 bile duct Anatomy 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 210000001198 duodenum Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000005070 sphincter Anatomy 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
- 210000001519 tissue 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、径内視鏡的に体腔内に導入され、
患部を高周波焼灼により切開する高周波切開具に
関する。[Detailed description of the invention] [Field of industrial application] This invention is introduced into a body cavity endoscopically,
The present invention relates to a high-frequency incision tool for incising an affected area by high-frequency cauterization.
高周波切開具は、第７図に示すように、内視鏡
の処置具挿通用チヤンネルに挿通される可撓性チ
ユーブ１の先端部の一側面に長手方向に離間する
２つの透孔２，３を設け、高周波電流を流す切開
用導電性ワイヤ４の先端を可撓性チユーブ１内の
先端部に固着すると共に、先端側の一方の透孔２
から外部に露出して切開部５を形成した後、手元
側の他方の透孔３から再び同チユーブ１内に導入
して基端を手元側に延び出してチユーブ１内に進
退自在に配設するように構成されている。
As shown in FIG. 7, the high-frequency cutting tool has two through holes 2 and 3 spaced apart in the longitudinal direction on one side of the distal end of a flexible tube 1 that is inserted into the treatment tool insertion channel of the endoscope. The distal end of the incision conductive wire 4 through which a high-frequency current flows is fixed to the distal end within the flexible tube 1, and one through hole 2 on the distal end side is
After forming an incision 5 by exposing it to the outside, it is introduced into the tube 1 again through the other through hole 3 on the proximal side, and the proximal end is extended toward the proximal side, so that it can move freely back and forth inside the tube 1. is configured to do so.
そして、導電性ワイヤ４を手元側で牽引するこ
とによつて、可撓性チユーブの２つの透孔２，３
間を弓状に彎曲させると共に、可撓性チユーブ１
の外側面に形成されている切開部５を弓の弦状に
張設させ、高周波電流を流して組織を切開するよ
うに用いられる。 By pulling the conductive wire 4 on the hand side, the two through holes 2 and 3 of the flexible tube are opened.
The flexible tube 1
An incision 5 formed on the outer surface of the incision is stretched in the shape of a bow chord, and a high-frequency current is applied to incise the tissue.
この種の高周波切開具は、実公昭61−4325号公
報にも示されているように、切開具５を弓の弦状
に張設させた際、露呈した導電性ワイヤ４の切開
部５が所望の方向に動くように可撓性チユーブ１
に曲がり癖を付与するために、可撓性チユーブ１
の先端部内に平面が切開部５に対向した弾性板６
を配設するようにしている。 As shown in Japanese Utility Model Publication No. 61-4325, in this type of high-frequency cutting tool, when the cutting tool 5 is stretched in a bowstring shape, the exposed cut portion 5 of the conductive wire 4 is Flexible tube 1 to move in desired direction
Flexible tube 1
An elastic plate 6 whose flat surface faces the incision 5 in the distal end of the
I am trying to set it up.
そして、可撓性チユーブ１内に弾性板６を配設
し、内視鏡の処置具挿通用チヤンネルへ挿入する
前に、可撓性チユーブ１に曲がり癖をつける。曲
がり癖をつけるには、第６図に示すように、可撓
性チユーブ１を弾性板６と共に、導電性ワイヤ４
の切開部５の張設方向に曲がり癖がつように指等
でしごく。すると、第７図に示すように、弾性板
６の平面が導電性ワイヤ４の切開部５の張設方向
と直交する向きに曲がり癖がつく。そして、内視
鏡の処置具挿通用チヤンネルへ挿入し、導電性ワ
イヤ４の切開部５を所望の方向に向けている。 Then, an elastic plate 6 is disposed inside the flexible tube 1, and the flexible tube 1 is given a bending tendency before being inserted into the treatment instrument insertion channel of the endoscope. In order to bend the flexible tube 1 with an elastic plate 6, as shown in FIG.
Squeeze with your fingers or the like so that it bends in the tension direction of the incision 5. Then, as shown in FIG. 7, the plane of the elastic plate 6 tends to bend in a direction perpendicular to the direction in which the cutout 5 of the conductive wire 4 is stretched. Then, it is inserted into the treatment instrument insertion channel of the endoscope, and the incision 5 of the conductive wire 4 is oriented in a desired direction.
しかしながら、内視鏡の挿入部は、胃や十二指
腸にて数回にわたり曲げられた状態で挿入されて
いるため、曲がり癖をつけた高周波切開具を処置
具挿通用チヤンネルに挿入すると、挿入部の曲が
りに伴つて、可撓性チユーブ１と弾性板６に数回
にわたり曲げ力が加わる。そのため、第８図に示
すように、可撓性チユーブ１に対して弾性板６が
回転して、弾性板６の平面が切開部５の張設方向
と直交する向きからずれてしまう。このような位
置関係では、第９図に示すように、高周波切開具
の先端部が内視鏡から突出しても、導電性ワイヤ
４の切開部５が所望の方向に向かないことにな
る。
However, the insertion section of an endoscope is bent several times in the stomach or duodenum, so when a curved high-frequency cutting instrument is inserted into the treatment instrument insertion channel, the insertion section is bent. As the tube bends, bending force is applied to the flexible tube 1 and the elastic plate 6 several times. Therefore, as shown in FIG. 8, the elastic plate 6 rotates with respect to the flexible tube 1, and the plane of the elastic plate 6 deviates from the direction perpendicular to the extending direction of the incision 5. In such a positional relationship, as shown in FIG. 9, even if the distal end of the high-frequency incision tool protrudes from the endoscope, the incision 5 of the conductive wire 4 will not face in the desired direction.
この考案は、このような問題点に着目してなさ
れたもので、内視鏡の処置具挿通チヤンネル内で
曲がり癖と異なる方向に曲げられても、弾性板の
平面と切開部の張設方向とが直交する向きで相対
的に変わることなく、切開部の突出時に正しくこ
れを所望の方向に向けることができる高周波切開
具を提供することを目的とする。 This invention was made with an eye on such problems, and its object is to provide a high-frequency incision tool that can be bent in a direction different from its natural bending tendency within the treatment tool insertion channel of an endoscope, so that the plane of the elastic plate and the tension direction of the incision part do not change relatively in their perpendicular directions, and can correctly point the incision part in the desired direction when it protrudes.
この考案は、上記目的を達成するために、可撓
性管の先端側内に延在する弾性板の巾の少なくと
も一部分を可撓性管の内径より大きく形成し、弾
性板を可撓性管に圧入固定するものである。
In order to achieve the above object, this invention forms at least a portion of the width of the elastic plate extending inside the distal end side of the flexible tube to be larger than the inner diameter of the flexible tube. It is press-fitted and fixed.
これにより、数回にわたつて曲げられている内
視鏡の挿入部内の処置具挿通用チヤンネルに高周
波切開具を挿入して、曲がり癖と異なる方向に曲
げられても、弾性板は可撓性管に圧入固定されて
いるので、弾性板の平面と切開部の張設方向とが
直行する向きで維持されたまま内視鏡より突出さ
れるものである。
This allows the elastic plate to remain flexible even when a high-frequency cutting instrument is inserted into the channel for inserting a treatment instrument in the insertion section of an endoscope that has been bent several times and is bent in a direction different from its tendency. Since it is press-fitted into the tube, it can be projected from the endoscope while the plane of the elastic plate and the direction in which the incision is stretched are maintained perpendicular to each other.
第１図及び第２図は、この考案の第１実施例を
示す図である。第１図Ａは、高周波切開具の断面
図である。可撓性チユーブ１１は、合成樹脂材等
からなり、内視鏡の処置具挿通用チヤンネルに挿
通できる径で形成されている。可撓性チユーブ１
１の先端部の一側面には長手方向の前後方向に離
間する一対の透孔１２，１３が穿設されている。
可撓性チユーブ１１の先端部内には、透孔１２，
１３に平面が対向する帯状金属板からなる、曲が
り癖を付与するための弾性板１５が延在してい
る。この弾性板１５は、第２図に示すように、先
端側の巾を可撓性チユーブの１１の内径より大き
く形成し、可撓性チユーブ１１に圧入固定されて
いる。その結果、第１図Ｂに示すように、可撓性
チユーブ１１は偏平に変形される。また、弾性板
１５の先端側の平面には透孔１６が穿設され、可
撓性チユーブ１１の先端側の透孔１２に対向する
ように弾性板１５が可撓性チユーブ１１に位置さ
れる。可撓性チユーブ１１内には、電気切開用導
電性ワイヤ１７が進退自在に挿通されている。こ
の導電性ワイヤ１７の先端部は、手元側の透孔１
３を通して外部に導出して切開部１８を形成した
のち、先端側の透孔１２に通して内部に導入さ
れ、さらにその先端は弾性板１５の透孔１６を通
して弾性板１５の先端部に固着されている。この
ように、導電性ワイヤ１７は透孔１２，１３間に
おいて可撓性チユーブ１１の外部に露呈し、可撓
性チユーブ１１側面に切開部１８を形成するよう
になつている。導電性ワイヤ１７の末端側には、
補強パイプ１９が嵌合され、この補強パイプ１９
の外周には電気絶縁性の絶縁チユーブ２０が被覆
されている。
1 and 2 are diagrams showing a first embodiment of this invention. FIG. 1A is a cross-sectional view of the high frequency dissection tool. The flexible tube 11 is made of a synthetic resin material or the like, and has a diameter that allows it to be inserted into a treatment tool insertion channel of an endoscope. flexible tube 1
A pair of through holes 12 and 13 spaced apart from each other in the longitudinal direction are bored in one side of the distal end portion of the tip.
Inside the tip of the flexible tube 11, a through hole 12,
An elastic plate 15, which is made of a band-shaped metal plate and has a flat surface facing the elastic plate 13, extends therein for imparting a bending tendency. As shown in FIG. 2, the elastic plate 15 has a width at the distal end larger than the inner diameter of the flexible tube 11, and is press-fitted into the flexible tube 11. As a result, the flexible tube 11 is deformed into a flattened shape, as shown in FIG. 1B. Further, a through hole 16 is bored in the plane on the distal end side of the elastic plate 15, and the elastic plate 15 is positioned on the flexible tube 11 so as to face the through hole 12 on the distal side of the flexible tube 11. . A conductive wire 17 for electrical incision is inserted into the flexible tube 11 so as to be freely retractable. The tip of this conductive wire 17 is connected to the through hole 1 on the proximal side.
3 to the outside to form an incision 18, and then introduced into the interior through the through hole 12 on the distal end side, and the distal end thereof is fixed to the distal end of the elastic plate 15 through the through hole 16 of the elastic plate 15. ing. In this way, the conductive wire 17 is exposed to the outside of the flexible tube 11 between the through holes 12 and 13, and an incision 18 is formed on the side surface of the flexible tube 11. On the distal side of the conductive wire 17,
The reinforcing pipe 19 is fitted, and this reinforcing pipe 19
An electrically insulating insulating tube 20 is coated on the outer periphery of the tube.
可撓性チユーブ１１の手元端部には継手管２１
が嵌着されており、この継手管２１の外側には絶
縁性の支持具２２が螺着されている。そして、こ
の支持具２２には継手管２１の内径と同径の挿入
孔２３が穿設され、この内周面にはＯリング２４
を装着し絶縁チユーブ２０と液密を保つている。
また、支持具２２の側壁には挿入孔２３と連通す
る口金２５が設けられており、この口金２５には
造影剤の入つた注射筒（図示しない）等が接続で
きるようになつている。 A joint pipe 21 is provided at the proximal end of the flexible tube 11.
An insulating support 22 is screwed onto the outside of the joint tube 21. An insertion hole 23 having the same diameter as the inner diameter of the joint pipe 21 is bored in this support 22, and an O-ring 24
is attached to maintain liquid tightness with the insulating tube 20.
A side wall of the support 22 is provided with a cap 25 that communicates with the insertion hole 23, and a syringe containing a contrast medium (not shown) or the like can be connected to the cap 25.
導電性ワイヤ１７の末端部は、補強パイプ１
９、絶縁チユーブ２０と共に支持具２２の挿入孔
２３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２６が接続されてい
る。このジヤツク２６にはカバー２７が螺着され
ていると共に、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。 The end of the conductive wire 17 is attached to the reinforcing pipe 1
9. Together with the insulating tube 20, it passes through the insertion hole 23 of the support 22 in a freely movable manner and is led out to the outside, and a jack 26 is connected to the end thereof. A cover 27 is screwed onto the jack 26, and is electrically connected to a high frequency generator (not shown).
次に上述した構成に基づいて高周波切開具の作
用を説明する。先ず、可撓性チユーブ１１の切開
部１８上を第６図に示すように指等でしごき、切
開部１８を内側にする曲がり癖をつけた後、内視
鏡の処置具挿通用チヤンネルを介して体腔内挿入
する。可撓性チユーブ１１は数回にわたつて曲げ
られている内視鏡の処置具挿通用チヤンネル内に
挿通する際、チヤンネル内で曲がり癖と異なる方
向に曲げ力が加わる。しかし、弾性板１５は可撓
性チユーブ１１に圧入固定されているので、可撓
性チユーブ１１に対して回転することなく、弾性
板１５の平面と切開部１８の張設方向とが直交す
る向きで維持されたまま、内視鏡より突出され
る。そして、可撓性チユーブ１１を例えば十二指
腸乳頭から胆管内に挿入した後、手元操作部で導
電性ワイヤ１７を牽引操作すると、切開部１８は
弓状に彎曲した可撓性チユーブ１１の内側に弓の
弦状に張設される。この状態で導電性ワイヤ１７
に高周波電流を通電し十二指腸乳頭括約筋を焼灼
切開する。 Next, the operation of the high-frequency cutting tool will be explained based on the above-described configuration. First, as shown in FIG. 6, the top of the incision 18 of the flexible tube 11 is squeezed with a finger or the like to bend the incision 18 inward, and then the tube is inserted through the channel for inserting the treatment instrument of the endoscope. and insert it into the body cavity. When the flexible tube 11 is inserted into a treatment instrument insertion channel of an endoscope that has been bent several times, a bending force is applied within the channel in a direction different from the bending tendency. However, since the elastic plate 15 is press-fitted into the flexible tube 11, the elastic plate 15 does not rotate with respect to the flexible tube 11, and the direction in which the plane of the elastic plate 15 and the direction in which the cutout 18 is stretched is perpendicular to the flexible tube 11 is maintained. The endoscope is then held in place and protruded from the endoscope. Then, after inserting the flexible tube 11 into the bile duct from the duodenal papilla, for example, when the conductive wire 17 is pulled by the hand operation section, the incision section 18 is bent inside the arched flexible tube 11. It is strung in the shape of a string. In this state, the conductive wire 17
A high-frequency current is applied to the area to cauterize and incise the duodenal papillary sphincter muscle.
このように、弾性板１５は可撓性チユーブ１１
に圧入固定されているので、可撓性チユーブ１１
の切開部１８の曲がり癖と異なる方向に曲げられ
ても、弾性板１５の平面と切開部１８の張設方向
とが直交する向きで切開することができる。 In this way, the elastic plate 15 is connected to the flexible tube 11.
The flexible tube 11 is press-fitted into the
Even if the elastic plate 15 is bent in a direction different from the bending tendency of the cutout 18, the cutout can be made in a direction in which the plane of the elastic plate 15 and the direction in which the cutout 18 is stretched are perpendicular to each other.
第３図及び第４図は第２実施例を示す図であ
る。第３図は、可撓性チユーブ３１の先端側の断
面図である。可撓性チユーブ３１の先端部の一側
面に透孔３２が穿設されている。可撓性チユーブ
３１内に延在する弾性板３３は、第４図に示すよ
うに先端側の巾を可撓性チユーブ３１の内径より
大きく形成すると共に、鋸状の凹凸部３４を形成
している。また、弾性板３３の先端側の平面には
透孔３５が穿設されている。そして、弾性板３３
は可撓性チユーブ３１に圧入固定されている。ま
た、可撓性チユーブ３１内には、電気切開用導電
性ワイヤ３６の先端部は、可撓性チユーブ３１の
透孔３２を通して外部に導出し切開部３７を形成
したのち、可撓性チユーブ３１の先端開口３８で
切り返して可撓性チユーブ３１内に挿通され、弾
性板３３の透孔３５を通して弾性板３３に固着さ
れている。 FIGS. 3 and 4 are diagrams showing a second embodiment. FIG. 3 is a sectional view of the distal end side of the flexible tube 31. A through hole 32 is bored in one side of the tip of the flexible tube 31 . As shown in FIG. 4, the elastic plate 33 extending inside the flexible tube 31 has a width on the distal end side larger than the inner diameter of the flexible tube 31, and has a saw-shaped uneven portion 34. There is. Further, a through hole 35 is bored in the plane on the distal end side of the elastic plate 33. And elastic plate 33
is press-fitted into the flexible tube 31. Further, inside the flexible tube 31, the distal end portion of the conductive wire 36 for electrical incision is led out to the outside through the through hole 32 of the flexible tube 31 to form an incision portion 37. The flexible tube 31 is cut back at the tip opening 38 and inserted into the flexible tube 31, and is fixed to the elastic plate 33 through the through hole 35 of the elastic plate 33.
この構成により、弾性板３３は鋸状の凹凸部３
４で可撓性チユーブ３１の内面にくいつくので、
大きな固定力量が得られる。特に、弾性板３３を
可撓性チユーブ３１の先端から引き抜く方向の力
に対する固定力量が大きい。従つて、高周波焼灼
による熱で可撓性チユーブ３１の先端部が軟化し
て、弾性板３３を可撓性チユーブ３１の先端から
引き抜く方向に力が加わつても、弾性板３３が可
撓性チユーブ３１の先端から突出して切開部３７
が延び、予想を超える切開をしてしまう恐れがな
く安全である。 With this configuration, the elastic plate 33 has a saw-shaped uneven portion 3.
4 will stick to the inner surface of the flexible tube 31,
A large amount of fixing force can be obtained. In particular, the amount of fixing force against the force in the direction of pulling out the elastic plate 33 from the tip of the flexible tube 31 is large. Therefore, even if the distal end of the flexible tube 31 is softened by the heat generated by high-frequency ablation and a force is applied in the direction of pulling out the elastic plate 33 from the distal end of the flexible tube 31, the elastic plate 33 will not hold the flexible tube. An incision 37 protrudes from the tip of 31.
It is safe because there is no risk of making an incision longer than expected.
第５図は、弾性板の他の変形例を示す図であ
る。弾性板４１は両端部に可撓性チユーブの内径
より大きい巾を形成した鋸状の凹凸部４２，４３
を形成している。そして、弾性板４１の先端側に
電気切開用導電性ワイヤを通す透孔４４が設けら
れている。 FIG. 5 is a diagram showing another modification of the elastic plate. The elastic plate 41 has saw-shaped uneven parts 42 and 43 having a width larger than the inner diameter of the flexible tube at both ends.
is formed. A through hole 44 through which a conductive wire for electrical incision is passed is provided on the distal end side of the elastic plate 41.
このように、弾性板４１の両端部で可撓性チユ
ーブに圧入固定するので、手元側の弾性板４１も
可撓性チユーブに対して回転することがない。従
つて、弾性板４１が先端側から手元側にわたつて
ねじれることがなく、安定して所望の切開方向に
切開することができる。 In this way, since both ends of the elastic plate 41 are press-fitted into the flexible tube, the elastic plate 41 on the proximal side also does not rotate relative to the flexible tube. Therefore, the elastic plate 41 is not twisted from the distal end side to the proximal side, and incision can be stably performed in a desired incision direction.
以上述べたように、可撓性管の先端側内に延在
する弾性板の巾の少なくとも一部分を、可撓性管
の内径より大きく形成し、弾性板を可撓性管に圧
入固定したので、数回にわたつて曲げられる内視
鏡の挿入部内の処置具挿通用チヤンネルに挿入し
て、曲がり癖と異なる方向に曲げられても、弾性
板の平面と切開部の張設方向とが直交する向きで
維持されたまま、内視鏡より突出することができ
る。したがつて、導電性ワイヤの切開部が所望の
方向に安定して向くので、安全で確実な切開を行
なうことができる。
As described above, at least part of the width of the elastic plate extending inside the distal end of the flexible tube is formed to be larger than the inner diameter of the flexible tube, and the elastic plate is press-fitted and fixed to the flexible tube. Even when inserted into the channel for inserting a treatment instrument in the insertion section of an endoscope that is bent several times, the plane of the elastic plate and the direction in which the incision is stretched are perpendicular even if the instrument is bent in a direction different from the bending tendency. It can be protruded from the endoscope while being maintained in the same orientation. Therefore, the incision portion of the conductive wire is stably oriented in a desired direction, allowing safe and reliable incision.
第１図Ａは第１実施例を示す高周波切開具の断
面図、第１図Ｂは第１図ＡのＣ−Ｃ断面図、第１
図Ｃは第１図ＡのＤ−Ｄ断面図、第２図Ａ，Ｂは
同実施例の弾性板を示す図、第３図は第２実施例
を示す可撓管の先端側の断面図、第４図は同実施
例の弾性板を示す図、第５図は弾性板の他の変形
例を示す図、第６図は可撓性チユーブに曲がり癖
をつける使用状態図、第７図Ａは可撓性チユーブ
に曲がり癖がついた断面図、第７図Ｂは第７図Ａ
のＡ−Ａ断面図、第８図Ａは従来の高周波切開具
における先端側の断面図、第８図Ｂは第８図Ａの
Ｂ−Ｂ断面図、第９図は従来の高周波切開具にお
いて内視鏡より突出した状態を示す図である。
１１，３１……可撓性管、１２、１３，３２…
…可撓性管の透孔、１５，３３，４１……弾性
板、１７，３６……導電性ワイヤ、１８，３７…
…切開部。
FIG. 1A is a cross-sectional view of a high-frequency cutting tool showing the first embodiment, FIG. 1B is a cross-sectional view taken along line CC in FIG.
Figure C is a sectional view taken along the line DD in Figure 1A, Figures 2A and B are views showing the elastic plate of the same embodiment, and Figure 3 is a sectional view of the tip side of the flexible tube showing the second embodiment. , FIG. 4 is a diagram showing the elastic plate of the same embodiment, FIG. 5 is a diagram showing another modification of the elastic plate, FIG. 6 is a usage state diagram for bending the flexible tube, and FIG. 7 is a diagram showing the elastic plate of the same embodiment. A is a cross-sectional view of the flexible tube with a bending tendency, and Fig. 7B is a cross-sectional view of Fig. 7A.
FIG. 8A is a cross-sectional view of the distal end of a conventional high-frequency cutting tool, FIG. 8B is a cross-sectional view of FIG. 8A along line B-B, and FIG. It is a figure which shows the state which protrudes from an endoscope. 11, 31...Flexible tube, 12, 13, 32...
...Through hole of flexible tube, 15, 33, 41... Elastic plate, 17, 36... Conductive wire, 18, 37...
...Incision.
Claims (1)
と、上記可撓性管の先端側の側面に穿設された透
孔と、上記可撓性管に挿通され先端側で透孔より
外部に露出し切開部を形成する導電性ワイヤと、
上記可撓性管の先端側内に上記透孔に平面を向け
て延在する弾性板とを有する高周波切開具におい
て、上記弾性板の巾の少なくとも一部分を上記可
撓性管の内径より大きく形成し、上記弾性板を上
記可撓性管に圧入固定したことを特徴とする高周
波切開具。 A flexible tube that can be inserted into the channel of an endoscope, a through hole drilled on the side surface of the distal end of the flexible tube, and a hole that is inserted through the flexible tube and outside the through hole on the distal side. a conductive wire exposed to form an incision;
A high-frequency cutting tool having an elastic plate extending within the distal end side of the flexible tube with a plane facing the through hole, wherein at least a portion of the width of the elastic plate is formed to be larger than the inner diameter of the flexible tube. A high-frequency cutting tool characterized in that the elastic plate is press-fitted and fixed to the flexible tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2741589U JPH0532100Y2 (en) | 1989-03-10 | 1989-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2741589U JPH0532100Y2 (en) | 1989-03-10 | 1989-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02118509U JPH02118509U (en) | 1990-09-25 |
| JPH0532100Y2 true JPH0532100Y2 (en) | 1993-08-18 |
Family
ID=31249887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2741589U Expired - Lifetime JPH0532100Y2 (en) | 1989-03-10 | 1989-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532100Y2 (en) |
-
1989
- 1989-03-10 JP JP2741589U patent/JPH0532100Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02118509U (en) | 1990-09-25 |
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