JPH07408A - Flexible tube of treatment jig for endoscope - Google Patents
Flexible tube of treatment jig for endoscopeInfo
- Publication number
- JPH07408A JPH07408A JP5145811A JP14581193A JPH07408A JP H07408 A JPH07408 A JP H07408A JP 5145811 A JP5145811 A JP 5145811A JP 14581193 A JP14581193 A JP 14581193A JP H07408 A JPH07408 A JP H07408A
- Authority
- JP
- Japan
- Prior art keywords
- flexible tube
- endoscope
- wire
- coil pipe
- diameter
- 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.)
- Pending
Links
Landscapes
- Surgical Instruments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、内視鏡の鉗子チャン
ネル等に挿通して使用される内視鏡用処置具の可撓管に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible tube for an endoscopic treatment tool which is used by being inserted into a forceps channel or the like of an endoscope.
【０００２】[0002]
【従来の技術】内視鏡用処置具の可撓管としては、一般
に、ステンレス鋼線などのような弾性線材からなる素線
を密着巻きのコイルパイプ状に形成したものが用いられ
る。2. Description of the Related Art As a flexible tube for a treatment instrument for endoscopes, generally, a wire made of an elastic wire such as a stainless steel wire is formed into a coil pipe in a tightly wound manner.
【０００３】ただし、その先端側の部分は、内視鏡挿入
部の先端において処置具起上台などによって小さな曲率
半径で屈曲させる必要が生じるので、可撓性を高く（即
ち、柔軟に）し、それより手元側は押し引き等の操作に
よって座屈しないよう、腰を強く（即ち、硬く）する必
要がある。However, since the distal end portion needs to be bent at the distal end of the endoscope insertion portion with a small radius of curvature by a treatment instrument raising base or the like, it has high flexibility (that is, is flexible), On the hand side, the waist needs to be strong (that is, hard) so as not to buckle due to an operation such as pushing and pulling.
【０００４】そこで従来は、素線径の太いコイルパイプ
の先端に、金属パイプを介して素線径の細いコイルパイ
プを連結したり、一様な素線径のコイルパイプの先端側
だけを、熱処理で焼きなまして軟質にしたり、先端側の
外表面だけを研削して素線を薄肉にすることにより可撓
性を高めていた。Therefore, conventionally, a coil pipe having a small wire diameter is connected to the tip of a coil pipe having a large wire diameter via a metal pipe, or only the tip side of a coil pipe having a uniform wire diameter is The flexibility is enhanced by annealing by heat treatment to make it soft, or by grinding only the outer surface on the tip side to thin the wire.
【０００５】[0005]
【発明が解決しようとする課題】しかし、二本のコイル
パイプを金属パイプなどで連結するのは、部品加工と組
立み立てに相当の工数がかかってコスト高になると共
に、連結部だけが曲がらない硬直部になるので、使用の
際にくり返して屈曲させているうちに連結部の近傍で破
損し易い欠点がある。However, connecting two coil pipes with a metal pipe or the like requires a considerable number of man-hours for processing the parts and assembling, and the cost is high, and only the connecting portion is bent. Since it has no rigid part, it has a drawback that it is easily damaged near the connecting part while it is repeatedly bent during use.
【０００６】また、コイルパイプの先端側だけを焼きな
ましたり研削すると、熱処理や研削に加工コストがかか
ると共に、その部分の強度が加工によって著しく低下し
て破損し易い欠点がある。Further, if only the tip end side of the coil pipe is annealed or ground, the heat treatment and the grinding cost processing costs, and the strength of that part is significantly reduced by the processing, and there is a drawback that it is easily damaged.
【０００７】そこで本発明は、可撓性を途中で変化させ
た可撓管であって、製作コストが低く、しかも耐久性の
優れた内視鏡用処置具の可撓管を提供することを目的と
する。Therefore, the present invention provides a flexible tube of which the flexibility is changed on the way, which is low in manufacturing cost and excellent in durability, as a treatment tube for an endoscope. To aim.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡用処置具の可撓管は、弾性線材から
なる素線を密着巻きのコイルパイプ状に形成した内視鏡
用処置具の可撓管において、上記素線を全長にわたって
同じ断面形状に形成すると共に、その素線径を途中で変
化させたことを特徴とする。In order to achieve the above-mentioned object, a flexible tube of a treatment instrument for an endoscope of the present invention is an endoscope in which an element wire made of an elastic wire is formed in a coil pipe shape of a tight winding. In the flexible tube of the treatment tool for a mirror, the strand is formed to have the same cross-sectional shape over the entire length, and the strand diameter is changed midway.
【０００９】[0009]
【実施例】図面を参照して実施例を説明する。図２は、
内視鏡用処置具として一般的に用いられる生検鉗子を示
しており、例えばステンレス鋼線のような弾性線材から
なる素線を密着巻きしてコイルパイプ状に形成した可撓
管１の先端に、リンク機構２によって開閉される一対の
鉗子カップ３が取り付けられている。Embodiments will be described with reference to the drawings. Figure 2
1 shows a biopsy forceps generally used as an endoscopic treatment tool, for example, a distal end of a flexible tube 1 formed in a coil pipe shape by closely winding a wire made of an elastic wire material such as a stainless steel wire. A pair of forceps cups 3 that are opened and closed by the link mechanism 2 are attached to the.
【００１０】可撓管１の基端側には、操作部４が連結さ
れていて、操作部４のスライダ５を進退操作することに
よって、可撓管１内に挿通された操作ワイヤ（図示せ
ず）が押し引きされ、それによって鉗子カップ３が開閉
される。An operating portion 4 is connected to the proximal end side of the flexible tube 1, and an operating wire (not shown) inserted through the flexible tube 1 by moving a slider 5 of the operating portion 4 forward and backward. The forceps cup 3 is opened and closed.
【００１１】図１は、可撓管１の断面を拡大して示して
おり、内部に挿通されている操作ワイヤは図示が省略さ
れている。この図に示されるように、可撓管１の素線は
全長にわたって円形断面に形成されていて、途中で素線
径が変わっており、可撓管１の先端側には細い素線径の
部分が用いられ、それ以外は太い素線径になっている。
そして、全長にわたって可撓管１の外径が均一になるよ
うに密着巻きされている。FIG. 1 shows an enlarged cross section of the flexible tube 1, and the operation wire inserted through the inside is not shown. As shown in this figure, the wire of the flexible tube 1 is formed in a circular cross section over the entire length, and the wire diameter changes in the middle, and the tip end side of the flexible tube 1 has a small wire diameter. The part is used, and the other parts have thicker wire diameters.
The flexible tube 1 is tightly wound so that the outer diameter of the flexible tube 1 is uniform over the entire length.
【００１２】したがって、可撓管１は、素線径の細い先
端側部分だけが可撓性が高くて柔軟であり、他の素線径
の太い部分は腰が強くなっている。そして、素線が全長
にわたって同じ断面形状なので、引き抜き材をそのまま
使用することができて部品コストが低く、途中に継ぎ目
等がなく、熱処理や研削加工等も不要なので製作コスト
が低くて加工に伴う強度低下も生じない。Therefore, in the flexible tube 1, only the tip side portion having a small wire diameter has high flexibility and is flexible, and the other thick portion having a wire diameter has a high rigidity. And since the strands have the same cross-sectional shape over the entire length, the drawn material can be used as it is, the part cost is low, there are no joints in the middle, and heat treatment and grinding are not required, so the manufacturing cost is low No reduction in strength occurs.
【００１３】図３は、本発明の可撓管１の第２の実施例
を示しており、コイルパイプの内径を全長にわたって均
一な径になるように密着巻きしたものである。このよう
に、本発明は実施例に限定されるものではなく、生検鉗
子以外の種々の内視鏡用処置具の可撓管に適用すること
もできる。FIG. 3 shows a second embodiment of the flexible tube 1 of the present invention, in which the inner diameter of the coil pipe is closely wound so as to have a uniform diameter over the entire length. As described above, the present invention is not limited to the embodiments, and can be applied to the flexible tubes of various endoscopic treatment tools other than the biopsy forceps.
【００１４】[0014]
【発明の効果】本発明の内視鏡用処置具の可撓管によれ
ば、素線を全長にわたって同じ断面形状に形成してその
素線径を途中で変化させて密着巻きのコイルパイプ状に
形成したので、可撓性を途中で容易に変化させ、しかも
低コストで製作でき、且つ加工に伴う強度低下がなくて
耐久性に優れている。According to the flexible tube of the endoscopic treatment tool of the present invention, the strands are formed in the same cross-sectional shape over the entire length and the diameter of the strands is changed on the way to form a tightly wound coil pipe. Since it is formed in the above, the flexibility can be easily changed on the way, and it can be manufactured at a low cost, and the strength is not lowered by the processing, and the durability is excellent.
【図１】内視鏡用処置具の可撓管の第１の実施例の側面
断面図である。FIG. 1 is a side sectional view of a first embodiment of a flexible tube of a treatment instrument for an endoscope.
【図２】内視鏡用生検鉗子の側面図である。FIG. 2 is a side view of the endoscopic biopsy forceps.
【図３】内視鏡用処置具の可撓管の第２の実施例の側面
断面図である。FIG. 3 is a side sectional view of a second embodiment of the flexible tube of the treatment instrument for endoscope.
１ 可撓管 1 flexible tube
Claims (1)
パイプ状に形成した内視鏡用処置具の可撓管において、
上記素線を全長にわたって同じ断面形状に形成すると共
に、その素線径を途中で変化させたことを特徴とする内
視鏡用処置具の可撓管。1. A flexible tube of a treatment instrument for an endoscope, in which a wire made of an elastic wire is formed into a coil pipe shape of tight winding.
A flexible tube for a treatment instrument for an endoscope, characterized in that the strand is formed to have the same cross-sectional shape over the entire length and the diameter of the strand is changed on the way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5145811A JPH07408A (en) | 1993-06-17 | 1993-06-17 | Flexible tube of treatment jig for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5145811A JPH07408A (en) | 1993-06-17 | 1993-06-17 | Flexible tube of treatment jig for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07408A true JPH07408A (en) | 1995-01-06 |
Family
ID=15393692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5145811A Pending JPH07408A (en) | 1993-06-17 | 1993-06-17 | Flexible tube of treatment jig for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07408A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332190A (en) * | 1995-06-08 | 1996-12-17 | Asahi Optical Co Ltd | Disposition means for endoscope |
| JPH08332189A (en) * | 1995-06-07 | 1996-12-17 | Asahi Optical Co Ltd | Disposition means for endoscope |
| JPH10234742A (en) * | 1997-02-26 | 1998-09-08 | Asahi Optical Co Ltd | Treatment appliance for endoscope |
| JP2007136128A (en) * | 2005-11-17 | 2007-06-07 | River Seiko:Kk | Clip device for endoscope |
| US20070233040A1 (en) * | 2006-03-31 | 2007-10-04 | Boston Scientific Scimed, Inc. | Flexible endoscope with variable stiffness shaft |
-
1993
- 1993-06-17 JP JP5145811A patent/JPH07408A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332189A (en) * | 1995-06-07 | 1996-12-17 | Asahi Optical Co Ltd | Disposition means for endoscope |
| JPH08332190A (en) * | 1995-06-08 | 1996-12-17 | Asahi Optical Co Ltd | Disposition means for endoscope |
| JPH10234742A (en) * | 1997-02-26 | 1998-09-08 | Asahi Optical Co Ltd | Treatment appliance for endoscope |
| JP2007136128A (en) * | 2005-11-17 | 2007-06-07 | River Seiko:Kk | Clip device for endoscope |
| US20070233040A1 (en) * | 2006-03-31 | 2007-10-04 | Boston Scientific Scimed, Inc. | Flexible endoscope with variable stiffness shaft |
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