JP2535047B2 - Endoscope treatment tool - Google Patents

Endoscope treatment tool

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Publication number
JP2535047B2
JP2535047B2 JP63030452A JP3045288A JP2535047B2 JP 2535047 B2 JP2535047 B2 JP 2535047B2 JP 63030452 A JP63030452 A JP 63030452A JP 3045288 A JP3045288 A JP 3045288A JP 2535047 B2 JP2535047 B2 JP 2535047B2
Authority
JP
Japan
Prior art keywords
sheath
endoscope
treatment tool
frequency
snare
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
Application number
JP63030452A
Other languages
Japanese (ja)
Other versions
JPH01204664A (en
Inventor
和宏 井上
哲二 石田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP63030452A priority Critical patent/JP2535047B2/en
Publication of JPH01204664A publication Critical patent/JPH01204664A/en
Application granted granted Critical
Publication of JP2535047B2 publication Critical patent/JP2535047B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Endoscopes (AREA)

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は内視鏡用処置具、詳しくは、内視鏡の処置具
挿通用チャンネルを通じて体腔内に挿入され、内視鏡の
観察下で、患部を処置する内視鏡用処置具に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a treatment instrument for an endoscope, more specifically, a treatment instrument insertion channel of an endoscope, which is inserted into a body cavity and is observed under the endoscope. The present invention relates to an endoscopic treatment tool for treating an affected part.

[従来の技術] 従来、内視鏡の処置具挿通用チャンネルを通じて体内
に挿入されて患部を処置するものとしては、高周波電流
を用いて患部の称っ焼灼切開等を行なう高周波処置具お
よび薬液等の送液を行なう処置具、高周波電流を併用さ
れる把持鉗子等の処置具と多種のものがある。そして、
これらの内視鏡用処置具、特に高周波処置具におけるシ
ースの構造は、例えば実開昭56−5538号公報に示される
ように、密着巻きにした金属製コイルからなる内側シー
スと、この内側シースの外周に被覆された絶縁性チュー
ブからなる外側シースとで構成され、その両シースは先
端部において互いに接着剤によって固着されるようにな
っていた。
[Prior Art] Conventionally, as a device that is inserted into the body through a treatment tool insertion channel of an endoscope to treat a diseased part, a high-frequency treatment tool and a drug solution for performing cautery incision of the diseased part using a high-frequency current. There are various types of treatment tools such as a treatment tool for delivering the liquid and a treatment tool such as grasping forceps that is used together with a high frequency current. And
As shown in, for example, Japanese Utility Model Application Laid-Open No. 56-5538, the structure of the sheath in these endoscopic treatment tools, particularly high-frequency treatment tools, is an inner sheath made of a metal coil tightly wound, and this inner sheath. And an outer sheath made of an insulating tube that is coated on the outer periphery of the sheath, and both sheaths are fixed to each other by an adhesive agent at the tip.

[発明が解決しようとする課題] ところが、上述した内外両シースがその先端部で単に
接着固定されているだけの従来の可撓性シースにおいて
は、その固着強度が不十分で、使用中に、その固着部が
外れ、高周波処置具の場合は、金属製の内側シースが外
側シースから露出し、目的部位以外を焼損させたり、送
液を伴なう処置具では送液が中途で洩れてしまう等の恐
れがあった。即ち、内視鏡用処置具は、体腔内に挿入さ
れた内視鏡の処置具挿通用チャンネルを通じて体腔内に
挿入されるものであるが、その挿入の際には、内視鏡の
チャンネルに従って挿入されるため紆余曲折し、処置具
にも曲がりが加わる。この曲がりに伴って内外両シース
の曲率の違いから内側シースが相対的に伸びると共に外
側シースには引張力が加わり、このため先端部分の固着
強度が弱いと、その固着部が外れ内側シースが外側シー
スより露出し、上記の欠点を生ずる。更にまた、高周波
処置具においては高周波電流による発熱のため、上記接
着剤が劣化して内外シースの固着力を更に弱めてしまう
不具合もあった。
[Problems to be Solved by the Invention] However, in the conventional flexible sheath in which both the inner and outer sheaths are simply adhesively fixed at their distal end portions, the fixing strength is insufficient, and during use, In the case of a high-frequency treatment instrument, the adhered part comes off, the metal inner sheath is exposed from the outer sheath, and the parts other than the target site are burnt out. There was a fear of such. That is, the treatment instrument for an endoscope is to be inserted into the body cavity through the treatment instrument insertion channel of the endoscope inserted in the body cavity, and at the time of insertion, according to the channel of the endoscope. Since it is inserted, it will be twisted and bent, and the treatment tool will also be bent. Due to this bending, the inner sheath expands relatively due to the difference in curvature between the inner and outer sheaths, and a tensile force is applied to the outer sheath. It is exposed from the sheath and causes the above-mentioned drawbacks. Furthermore, in the high-frequency treatment tool, there is a problem that the adhesive is deteriorated due to heat generation by the high-frequency current, and the fixing force of the inner and outer sheaths is further weakened.

従って、本発明の目的は、上述したような内視鏡用処
置具における従来の可撓性シースの構造の欠点を解消
し、可撓性シースの先端部が大きく弯曲させられるよう
な場合でも、その内外シースが互いに剥離・破損するよ
うなことのない可撓性シースを有する内視鏡用処置具を
提供するにある。
Therefore, the object of the present invention is to eliminate the drawbacks of the structure of the conventional flexible sheath in the treatment instrument for an endoscope as described above, and even when the distal end portion of the flexible sheath is greatly curved, Another object of the present invention is to provide an endoscopic treatment tool having a flexible sheath in which the inner and outer sheaths are not separated or damaged.

[課題を解決するための手段および作用] 本発明は、可撓性を有する金属製の内側シースと、こ
の内側シースの外周面に被覆された合成樹脂製の外側シ
ースとからなるシースを有する内視鏡用処置具におい
て、上記合成樹脂製の外側シースの少なくとも先端近傍
部分をかなりの長さにおいて熱成形により、上記内側シ
ースに密着固定したことを特徴とするものであって、先
端側部分の固着強度を増加させたものである。
[Means and Action for Solving the Problem] The present invention has an inner sheath having a flexible inner sheath made of metal and an outer sheath made of synthetic resin with which the outer peripheral surface of the inner sheath is covered. In the treatment tool for an endoscope, at least a portion near the tip of the outer sheath made of synthetic resin is thermoformed over a considerable length to be tightly fixed to the inner sheath. This is an increase in the bond strength.

[実 施 例] 以下、本発明を図示の実施例に基づいて説明する。[Embodiment] Hereinafter, the present invention will be described based on the illustrated embodiment.

第2図は、高周波によりポリープ等の切除を行なう、
高周波スネアに本発明を適用した場合の本発明の第1実
施例を示したものである。この高周波スネア1は、可撓
性シース2と、この可撓性シース2の基部に接続された
操作部本体3と、上記可撓性シース2内に進退自在に挿
通された操作ワイヤ5の先端部に、シース先端から突出
したときにループを形成するように途中を折り曲げて形
成されたスネアワイヤ4と、上記操作ワイヤ5の基部が
固着され、上記操作部本体3に摺動自在に配設されたス
ライダ6とで、その主要部が構成されている。
Fig. 2 shows the cutting of polyps by high frequency.
1 shows a first embodiment of the present invention when the present invention is applied to a high frequency snare. The high frequency snare 1 includes a flexible sheath 2, an operation portion main body 3 connected to a base portion of the flexible sheath 2, and a distal end of an operation wire 5 which is inserted into the flexible sheath 2 so as to be able to advance and retract. The snare wire 4 formed by bending the middle of the wire so as to form a loop when protruding from the distal end of the sheath, and the base portion of the operation wire 5 are fixed to the portion and slidably arranged on the operation portion main body 3. The slider 6 constitutes the main part.

上記スネアワイヤ4は、拡開性を有するループ状に形
成されていて、その後端に接続された操作ワイヤ5を通
じて、上記スライダ6のコネクター6aに接続コードを介
して接続された高周波電源から高周波電流が流されるよ
うになっている。
The snare wire 4 is formed in a loop shape having spreadability, and a high frequency current is supplied from a high frequency power source connected to a connector 6a of the slider 6 via a connection cord through an operation wire 5 connected to a rear end of the snare wire 4. It is supposed to be washed away.

そして、上記可撓性シース2は、その先端部の拡大図
を第1図に示すように、帯状金属弾性板をコイル状に密
着巻きして形成された内側シース7と、この内側シース
7の外周を覆う四弗化エチレン樹脂等からなる外側シー
ス8とからなり、内外シース7,8は最先端部からかなり
の長さにわたって内側シース7上に外側シース8を加熱
しながらダイス等を通して熱成形によって固着して熱成
形部10を形成してある。
The flexible sheath 2 has an inner sheath 7 formed by closely winding a strip-shaped metal elastic plate into a coil shape, and an inner sheath 7 of the inner sheath 7 as shown in an enlarged view of the distal end portion of FIG. An outer sheath 8 made of tetrafluoroethylene resin or the like covering the outer periphery is formed, and the inner and outer sheaths 7, 8 are thermoformed through a die or the like while heating the outer sheath 8 on the inner sheath 7 for a considerable length from the most distal end. And the thermoformed portion 10 is formed by fixing.

次に、以上のように構成された高周波スネア1の作用
について説明する。先ず、内視鏡の先端部を体腔内に挿
入した後、同内視鏡の処置具挿通用チャンネルを通して
高周波スネアワイヤ1を体腔内に導入する。このとき、
同高周波スネア1のスネアワイヤ4は、第1図に示すよ
うに、スライダ6を介して操作ワイヤ5が手元側一杯に
引かれていることにより、可撓性シース2内に完全に引
き込まれた収納状態にある。次いで内視鏡の観察下にお
いて、その先端部を目的とするポリープ等に向けて誘導
し近接させた後、高周波スネア1の先端を内視鏡のチャ
ンネル出口より突出させ、そのスライダ6を操作して、
スネアワイヤ4を可撓性シース2の先端から突出させ、
第2図に示すようにループ状に拡開させる。そして、こ
れを目的のポリープ等に引掛ける。次いでスライダ6を
手元側に引きスネアワイヤ4を可撓性シース2内に引き
込み、同スネアワイヤ4によりポリープ等を緊縛する。
その後、同スネアワイヤ4に、上記操作ワイヤ5を通じ
て高周波電流を流して、上記ポリープ等を焼き切る。
Next, the operation of the high frequency snare 1 configured as above will be described. First, after inserting the distal end portion of the endoscope into the body cavity, the high-frequency snare wire 1 is introduced into the body cavity through the treatment tool insertion channel of the endoscope. At this time,
As shown in FIG. 1, the snare wire 4 of the same high-frequency snare 1 is completely retracted into the flexible sheath 2 because the operating wire 5 is fully pulled on the proximal side through the slider 6 as shown in FIG. Is in a state. Next, under the observation of the endoscope, the tip of the high-frequency snare 1 is guided toward the target polyp or the like so as to be in close proximity, and then the tip of the high-frequency snare 1 is projected from the channel outlet of the endoscope, and the slider 6 is operated. hand,
The snare wire 4 is projected from the tip of the flexible sheath 2,
As shown in FIG. 2, it is expanded in a loop shape. Then, this is hooked on the intended polyp or the like. Next, the slider 6 is pulled toward the hand side, the snare wire 4 is pulled into the flexible sheath 2, and the snoop wire 4 tightly binds the polyp or the like.
After that, a high-frequency current is passed through the snare wire 4 through the operation wire 5 to burn off the polyp and the like.

このように高周波スネアを用いたポリペクトミーにお
いては、従来のものと同様に、可撓性シースは内視鏡の
弯曲に対応して大きく弯曲させられ、外側シース8と内
側シース7との曲率の違いから外側シース8には引張力
が加わり、また高周波の通電時にはスネアワイヤ4は高
温となり、その近傍のシース部の先端も高温となるが、
上述したように内側シース7と外側シース8の先端部が
かなり長い範囲にわたって熱成形により一体的に密着し
た熱成形部10となっており、これによって内側シース7
と外側シース8とが剥離することがない。
As described above, in the polypectomy using the high-frequency snare, the flexible sheath is largely curved corresponding to the curvature of the endoscope, and the difference in curvature between the outer sheath 8 and the inner sheath 7 is obtained. Therefore, a tensile force is applied to the outer sheath 8, and the snare wire 4 has a high temperature when a high frequency current is applied, and the tip of the sheath portion in the vicinity thereof also has a high temperature.
As described above, the distal ends of the inner sheath 7 and the outer sheath 8 form the thermoformed portion 10 which is integrally and closely adhered to the inner sheath 7 by thermoforming over a considerably long range.
The outer sheath 8 does not peel off.

即ち、従来の可撓性シースのように、内側シースと外
側シースを接着等によって固着した場合には、固着の強
度を上げるために、接着部分を長くしなければならない
が、これを長くすることは弯曲性を損なうことになるの
で長くすることができず、従って充分な強度が得られな
かった。それに比べて本実施例における可撓性シース2
は、その内側シースと外側シース8を先端部において熱
成形加工により固着してあるので、硬質長部分を特に長
くする必要はなく、従って弯曲性も損なわず、熱成形部
10を適宜任意の長さにすることができ、内側シース7と
外側シース8とが剥離して、内側シース7が露出し、目
的物以外の正常な粘膜まで焼損させてしまうというよう
な危険性を確実に防止することができる。
That is, when the inner sheath and the outer sheath are fixed to each other by adhesion or the like like a conventional flexible sheath, it is necessary to lengthen the bonded portion in order to increase the strength of the fixing. However, it cannot be made longer because it impairs the bending property, and therefore sufficient strength cannot be obtained. Compared with this, the flexible sheath 2 in this embodiment
Since the inner sheath and the outer sheath 8 are fixed to each other by thermoforming at the tip portion, it is not necessary to particularly lengthen the hard long portion, and therefore the bending property is not impaired.
There is a risk that 10 can be arbitrarily set to an arbitrary length and the inner sheath 7 and the outer sheath 8 are peeled off to expose the inner sheath 7 and burn out even normal mucous membranes other than the target object. Can be reliably prevented.

第3図は、本発明の第2実施例を示す高周波スネアの
先端部の断面図である。なお、本実施例における高周波
スネアは、可撓性シース2Aの先端部の熱成形部10の構成
が異なるのみで他は上記第1実施例の高周波スネア1と
全く同様に構成されている。本実施例における外側シー
ス8も四弗化エチレン樹脂からなっており、密着巻きさ
れたコイル状金属製の内側シース7の外周面上に被覆さ
れ、その先端部は熱成形加工により熱成形部10が形成さ
れるが、この熱成形部10は熱成形加工後、その先端部分
が上記熱成形加工時よりも少し高い温度の再熱処理によ
るアニーリング処理によって硬度が低下したアニール部
13として形成されるほか、上記熱成形部10の径でなる第
1熱生成部11よりも手元側の部分が第1熱成形部11の外
径より僅かに大きい径の第2成形部12として形成されて
いる点で異なっている。
FIG. 3 is a sectional view of the tip portion of the high frequency snare showing the second embodiment of the present invention. The high frequency snare according to the present embodiment has exactly the same configuration as the high frequency snare 1 according to the first embodiment except that the configuration of the thermoforming portion 10 at the distal end of the flexible sheath 2A is different. The outer sheath 8 in the present embodiment is also made of tetrafluoroethylene resin, and is coated on the outer peripheral surface of the inner sheath 7 made of coil-shaped metal that is closely wound, and the tip end thereof is subjected to thermoforming to form the thermoformed portion 10. After the thermoforming process, the annealed part of which the hardness is lowered by the annealing treatment by the reheat treatment at a temperature slightly higher than that at the time of the thermoforming process is formed after the thermoforming process.
In addition to being formed as 13, the second molding portion 12 having a diameter closer to the first heat generating portion 11 and having a diameter of the thermoforming portion 10 is slightly larger than the outer diameter of the first thermoforming portion 11. They are different in that they are formed.

このように構成された本実施例の高周波スネアは、上
記外側シース8の先端がアニール部13となっているの
で、高周波通電時の加熱に対しては耐熱性が高く変形す
るようなことがなく、また第2熱成形部12により高周波
スネアの処置具挿通チャンネルに対する進退力量は軽減
され、進退の際の外側シースに加わるしごきの力が軽減
される。
In the high-frequency snare of the present embodiment configured as described above, the outer sheath 8 has an annealed portion 13 at the tip thereof, and therefore has high heat resistance and is not deformed by heating during high-frequency energization. Further, the amount of advancing and retreating force of the high-frequency snare with respect to the treatment instrument insertion channel is reduced by the second thermoforming unit 12, and the ironing force applied to the outer sheath at the time of advancing and retracting is reduced.

なお、上記各実施例は、何れも高周波スネアに本発明
を適用したものであるが、これは高周波スネアに限るも
のでなく、高周波凝固子,高周波切開ナイフ等のその他
の高周波処置具にも適用できるものであり、更に外周に
絶縁チューブで被覆されている高周波処置具と併用可能
な把持鉗子等にも適用できること勿論である。
In addition, although each of the above-described embodiments applies the present invention to a high-frequency snare, this is not limited to the high-frequency snare, and is also applied to other high-frequency treatment tools such as a high-frequency coagulator and a high-frequency incision knife. Needless to say, the present invention can be applied to a grasping forceps or the like that can be used together with a high-frequency treatment instrument whose outer circumference is covered with an insulating tube.

第4図は、本発明を把持鉗子に適用した場合の本発明
の第3実施例を示したものである。この把持鉗子21も鉗
子部分を除き可撓性シース2Cは上記各実施例のものと略
同様に構成されている。即ち、帯状金属弾性板をコイル
状に密着巻きした内側シース7と、この内側シース7の
外周を被覆する四弗化エチレン樹脂等からなる外側シー
ス8とからなり、上記外側シース8の先端部は内側シー
ス7に熱成形加工によって密着固着されて、熱成形部10
となっている。この可撓性シース2Cの先端には先端チッ
プ18が嵌着されており、同先端チップ18内には後記する
2本の鉗子14を分離して突出させるためのピン19が管軸
に直交するように植立されている。
FIG. 4 shows a third embodiment of the present invention when the present invention is applied to grasping forceps. Also in this grasping forceps 21, the flexible sheath 2C is configured in substantially the same manner as that of each of the above-described embodiments except for the forceps portion. That is, the inner sheath 7 is formed by tightly winding a strip-shaped metal elastic plate into a coil shape, and the outer sheath 8 made of tetrafluoroethylene resin or the like covering the outer periphery of the inner sheath 7 is provided. The inner sheath 7 is adhered and fixed to the inner sheath 7 by thermoforming, and the thermoforming portion 10
Has become. A distal tip 18 is fitted to the distal end of the flexible sheath 2C, and a pin 19 for separating and projecting two forceps 14 described later is orthogonal to the tube axis in the distal tip 18. Has been planted.

一方、可撓性シース2C内には弾性金属体よりなる上記
2本の鉗子14が、その基部を接続パイプ16を介して操作
ワイヤ15の先端部にロー付等により固着されていて、可
撓性シース2C内に進退自在に挿通された操作ワイヤ15の
手元端は図示されない操作部本体に摺動自在に配設され
たスライダに取付けられており、同スライダの操作によ
り、上記操作ワイヤ15を介して、鉗子14は上記先端チッ
プ18から出入するようになっている。
On the other hand, in the flexible sheath 2C, the two forceps 14 made of an elastic metal body are fixed to the distal end portion of the operation wire 15 via the connection pipe 16 by brazing or the like, and are flexible. The proximal end of the operation wire 15 that is inserted into the flexible sheath 2C so as to be able to move back and forth is attached to a slider that is slidably arranged on an operation section body (not shown), and the operation wire 15 can be moved by operating the slider. The forceps 14 is designed to come in and out from the tip 18 via the tip.

次にこのように構成された把持鉗子の作用について説
明する。先ず、手元操作部の操作により鉗子14を、手元
操作部のスライダ(図示されず)の操作により、可撓性
シース2Cの先端部内に引き込み、これを収納した状態
で、体腔内に挿入された内視鏡のチャンネルを通して、
体腔内に挿入される。次いで、内視鏡の観察下で内視鏡
を操作し、把持鉗子21の先端部を異物(図示されず)に
近接させる。この際、異物が血液や粘液等によって確認
できない場合は、操作部の注水コック(図示されず)を
介してシース2C内を通じて送水して異物を洗う。そして
異物を確認した後、手元操作部のスライダ(図示され
ず)を操作して、鉗子14を可撓性シース2Cの先端チップ
18から異物に向けて突出させて、その拡開習性により図
示のように先端が開いた状態にする。次いで、鉗子14を
異物を挾むようにして押しつけながら、スライダを操作
して、同鉗子14を可撓性シース2C内に引き込む。する
と、鉗子14は互いに相寄り異物を好適に把持するので、
異物を把持した把持鉗子21を内視鏡と共に体外に引き出
して、異物を回収する。
Next, the operation of the gripping forceps thus configured will be described. First, the forceps 14 is pulled into the distal end portion of the flexible sheath 2C by the operation of the slider (not shown) of the hand operation portion by operating the hand operation portion, and is inserted into the body cavity in a state where it is stored. Through the channel of the endoscope,
It is inserted into the body cavity. Next, the endoscope is operated under observation of the endoscope to bring the tip of the grasping forceps 21 close to a foreign object (not shown). At this time, if the foreign matter cannot be confirmed due to blood, mucus, etc., the foreign matter is washed by sending water through the sheath 2C through a water injection cock (not shown) of the operation unit. Then, after confirming the foreign matter, the forceps 14 is operated by operating a slider (not shown) of the operation portion at the proximal end so that the forceps 14 is attached to the tip of the flexible sheath 2C.
It is made to project from 18 toward the foreign matter, and the tip is opened as shown in the figure due to its spreading habit. Next, while pressing the forceps 14 so as to pinch the foreign matter, the slider is operated to draw the forceps 14 into the flexible sheath 2C. Then, the forceps 14 are close to each other and appropriately grasp the foreign matter.
The grasping forceps 21 that has grasped the foreign matter is pulled out of the body together with the endoscope, and the foreign matter is collected.

このように本実施例における把持鉗子21においても、
可撓性シース2Cの熱成形部10が前実施例と同様に形成さ
れているので全く同様に、外側シース8の剥離が防止さ
れ、これによって相液能の低下や内視鏡挿入時のひっか
かりも防止される。また、その弯曲操作性は極えて良好
なものとなり、同様な効果を得ることができる。なお、
本実施例における把持鉗子21は、高周波処置具との併用
も可能であり、その場合には、上記高周波スネアと全く
同様な効果を有することは明らかである。
As described above, also in the grasping forceps 21 in the present embodiment,
Since the thermoformed portion 10 of the flexible sheath 2C is formed in the same manner as in the previous embodiment, peeling of the outer sheath 8 is prevented in exactly the same manner, which lowers the fluid phase and is caught when the endoscope is inserted. Is also prevented. Further, the bending operability is extremely good, and the same effect can be obtained. In addition,
The grasping forceps 21 in the present embodiment can be used together with a high-frequency treatment tool, and in that case, it is clear that it has exactly the same effect as the above-mentioned high-frequency snare.

[発明の効果] 以上説明したように、本発明によれば、可撓性シース
の硬質長を特に長くする必要はなく、内外両シースの固
定密着部分の長さを任意に設定することができ、密着固
定部分が外れて内側シースが露呈して不用意に体腔内粘
膜等を傷付けたり高周波処置具においては目的物以外の
部分を焼損させたりするようなことは確実に防止できる
内視鏡用処置具を提供することができる。
[Effects of the Invention] As described above, according to the present invention, it is not necessary to particularly increase the hard length of the flexible sheath, and the lengths of the fixed and close contact portions of both the inner and outer sheaths can be arbitrarily set. , It is possible to reliably prevent accidental damage to the mucous membrane in the body cavity due to detachment of the tightly fixed part and exposure of the inner sheath, or burning of parts other than the target in the high-frequency treatment device. A treatment tool can be provided.

【図面の簡単な説明】[Brief description of drawings]

第1図は、本発明の第1実施例を示す内視鏡用処置具で
ある高周波スネアの先端部の拡大断面図、 第2図は、上記第1図の高周波スネアの全体の構成を示
す概要図、 第3図は、本発明の第2実施例を示す内視鏡用処置具で
ある高周波スネアの先端部の断面図、 第4図は、本発明の第3実施例を示す内視鏡用処置具で
ある把持鉗子の先端部の断面図である。 1……高周波スネア(内視鏡用処置具) 2……可撓性シース 7……内側シース 8……外側シース 10,11,12,13……熱成形部 21……把持鉗子(内視鏡用処置具)
FIG. 1 is an enlarged cross-sectional view of a distal end portion of a high frequency snare which is a treatment instrument for an endoscope showing a first embodiment of the present invention, and FIG. 2 shows an entire configuration of the high frequency snare of FIG. Schematic diagram, FIG. 3 is a cross-sectional view of the distal end portion of a high-frequency snare which is a treatment tool for an endoscope showing a second embodiment of the present invention, and FIG. 4 is an endoscope showing a third embodiment of the present invention. It is sectional drawing of the front-end | tip part of the grasping forceps which is a treatment tool for mirrors. 1 ... High frequency snare (treatment tool for endoscope) 2 ... Flexible sheath 7 ... Inner sheath 8 ... Outer sheath 10,11,12,13 ... Thermoformed part 21 ... Grip forceps Treatment tool for mirror)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】可撓性を有する金属製の内側シースと、こ
の内側シースの外周面に被覆された合成樹脂製の外側シ
ースとからなるシースを有する内視鏡用処置具におい
て、 上記合成樹脂製の外側シースの少なくとも先端近傍部分
を熱成形により、上記金属製の内側シースに密着固定し
たことを特徴とする内視鏡用処置具。
1. A treatment instrument for an endoscope having a sheath made of a flexible metal inner sheath and a synthetic resin outer sheath with which the outer peripheral surface of the inner sheath is covered. A treatment tool for an endoscope, wherein at least a portion near a tip of the outer sheath made of metal is closely fixed to the inner sheath made of metal by thermoforming.
JP63030452A 1988-02-10 1988-02-10 Endoscope treatment tool Expired - Lifetime JP2535047B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63030452A JP2535047B2 (en) 1988-02-10 1988-02-10 Endoscope treatment tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63030452A JP2535047B2 (en) 1988-02-10 1988-02-10 Endoscope treatment tool

Publications (2)

Publication Number Publication Date
JPH01204664A JPH01204664A (en) 1989-08-17
JP2535047B2 true JP2535047B2 (en) 1996-09-18

Family

ID=12304302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63030452A Expired - Lifetime JP2535047B2 (en) 1988-02-10 1988-02-10 Endoscope treatment tool

Country Status (1)

Country Link
JP (1) JP2535047B2 (en)

Also Published As

Publication number Publication date
JPH01204664A (en) 1989-08-17

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