JP2001170001A - Operating wire for endoscope - Google Patents
Operating wire for endoscopeInfo
- Publication number
- JP2001170001A JP2001170001A JP35530399A JP35530399A JP2001170001A JP 2001170001 A JP2001170001 A JP 2001170001A JP 35530399 A JP35530399 A JP 35530399A JP 35530399 A JP35530399 A JP 35530399A JP 2001170001 A JP2001170001 A JP 2001170001A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- endoscope
- operation wire
- flexible tube
- single metal
- 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.)
- Granted
Links
Landscapes
- Surgical Instruments (AREA)
- Endoscopes (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は内視鏡用操作ワイ
ヤに関する。The present invention relates to an operation wire for an endoscope.
【０００２】[0002]
【従来の技術】内視鏡の操作ワイヤとしては、内視鏡の
湾曲操作ワイヤや内視鏡用生検鉗子の鉗子カップ操作ワ
イヤ等がポピュラーである。そのような内視鏡用操作ワ
イヤとして、従来は、曲がり癖がつき難いように複数の
金属細線からなる素線を撚り合わせて形成された撚り線
が用いられている。2. Description of the Related Art As an operation wire of an endoscope, a bending operation wire of an endoscope, a forceps cup operation wire of an endoscope biopsy forceps, and the like are popular. Conventionally, as such an endoscope operation wire, a stranded wire formed by twisting strands made of a plurality of thin metal wires so as to be less likely to bend is used.
【０００３】[0003]
【発明が解決しようとする課題】しかし、そのような撚
り線は、表面がでこぼこしているので進退動作時にガイ
ドコイル等と擦れあって操作抵抗が大きいだけでなく、
素線の軸線がワイヤの軸線方向に対してらせん状に捩じ
れているので、ワイヤに圧縮力が作用するとその力が各
素線を膨らませる方向に作用する。However, such a stranded wire has a rough surface, so that it not only rubs against a guide coil or the like during the forward / backward movement and has a large operating resistance.
Since the axis of the wire is spirally twisted with respect to the axial direction of the wire, when a compressive force acts on the wire, the force acts in a direction to expand each wire.
【０００４】その結果、例えば図９に示されるように、
ワイヤが圧縮応力の集中部Ａにおいて局部的に膨らみっ
ぱなしになり、操作抵抗が大きくなって作動不良になっ
たり断線の原因になる。かといって、操作ワイヤに単線
を用いたのでは、容易に曲がり癖がついてしまって作動
不良になってしまう。As a result, for example, as shown in FIG.
The wire locally swells at the compressive stress concentration portion A, and the operation resistance increases, resulting in malfunction and disconnection. On the other hand, if a single wire is used as the operation wire, it tends to bend easily and malfunction.
【０００５】そこで本発明は、操作抵抗が小さくて圧縮
強度が優れ、曲がり癖発生による作動不良にもなり難い
内視鏡用操作ワイヤを提供することを目的とする。Accordingly, an object of the present invention is to provide an operation wire for an endoscope which has a small operation resistance, has excellent compressive strength, and is less likely to malfunction due to a bending habit.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡用操作ワイヤは、軸線方向に進退操
作されて一端側から他端側に直線動作を伝達するための
内視鏡用操作ワイヤにおいて、平行に密着して並べた複
数の金属単線をほぼ全長にわたって可撓性チューブで被
覆、結束して形成したものである。In order to achieve the above object, an endoscope operation wire according to the present invention is provided with an inner wire for transmitting a linear motion from one end to the other end by being advanced and retracted in an axial direction. In an operation wire for an endoscope, a plurality of single metal wires arranged in close contact in parallel are covered with a flexible tube over substantially the entire length and bound.
【０００７】なお、可撓性チューブがフッ素樹脂製であ
ってもよく、複数の金属単線の素線径が相違していても
よい。[0007] The flexible tube may be made of a fluororesin, and a plurality of single metal wires may have different element diameters.
【０００８】[0008]
【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、内視鏡用の処置具の一つである
内視鏡用生検鉗子を示しており、図示されていない内視
鏡の処置具挿通チャンネルに挿脱される可撓性のシース
１内に、操作ワイヤ１０が軸線方向に進退自在に全長に
わたって配置されている。Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows an endoscope biopsy forceps which is one of the treatment tools for an endoscope, and a flexible sheath which is inserted into and removed from a treatment tool insertion channel (not shown) of the endoscope. In 1, the operation wire 10 is disposed over the entire length so as to be able to advance and retreat in the axial direction.
【０００９】そして、シース１の基端に連結された操作
部２において操作部材であるスライダー２１を進退操作
することにより、操作ワイヤ１０が軸線方向に進退動作
して、シース１の先端に取り付けられた一対の鉗子カッ
プ３が開閉駆動される。Then, by operating the slider 21 as an operation member in the operation section 2 connected to the base end of the sheath 1, the operation wire 10 moves forward and backward in the axial direction, and is attached to the distal end of the sheath 1. The pair of forceps cups 3 is opened and closed.
【００１０】図１は、生検鉗子の先端部分を示してお
り、シース１の先端に固着連結された先端支持本体４に
は先側に開口するスリ割り４ａが形成されていて、その
スリ割り４ａを横断するように配置された支持ピン５
に、一対の鉗子カップ３が開閉自在に支持されている。FIG. 1 shows a tip portion of a biopsy forceps. A tip support body 4 fixedly connected to a tip end of a sheath 1 is formed with a slot 4a opening to the front side. Support pin 5 arranged to traverse 4a
, A pair of forceps cups 3 is supported so as to be openable and closable.
【００１１】スリ割り４ａ内には、鉗子カップ３を開閉
動作させるためのリンク機構６が配置されている。そし
て、リンク機構６の後端にピン連結された連結部材７に
操作ワイヤ１０の先端が連結固定されており、操作ワイ
ヤ１０によって伝達される直線運動により連結部材７が
進退してリンク機構６が動作し、それによって鉗子カッ
プ３が開閉される。A link mechanism 6 for opening and closing the forceps cup 3 is disposed in the slot 4a. The distal end of the operation wire 10 is connected and fixed to a connecting member 7 pin-connected to the rear end of the link mechanism 6, and the connecting member 7 advances and retreats by linear motion transmitted by the operating wire 10, and the link mechanism 6 is moved. It operates, whereby the forceps cup 3 is opened and closed.
【００１２】操作ワイヤ１０は、複数のステンレス鋼線
（金属単線）１１を平行に密着して並べ、それら複数の
金属単線１１をほぼ全長にわたって例えば四フッ化エチ
レン樹脂（フッ素樹脂）又はポリイミド樹脂等のような
滑りのよい合成樹脂材からなる可撓性チューブ１２で被
覆、結束して形成されている。The operating wire 10 is composed of a plurality of stainless steel wires (single metal wires) 11 arranged in close contact with each other in parallel, and the plurality of single metal wires 11 are arranged over substantially the entire length, for example, by using tetrafluoroethylene resin (fluorine resin) or polyimide resin. It is formed by covering and binding with a flexible tube 12 made of a slippery synthetic resin material as described above.
【００１３】なお、連結部材７に連結される操作ワイヤ
１０の先端部分は、金属単線１１だけが連結部材７に形
成された孔に差し込まれてかしめ加工等によってそこに
固定され、スライダー２１に連結される操作ワイヤ１０
の基端部分は、可撓性チューブ１２に代わって金属パイ
プ１３が被覆、固着されている。The distal end portion of the operation wire 10 connected to the connecting member 7 is fixed to the slider 21 with only the single metal wire 11 inserted into a hole formed in the connecting member 7 by caulking or the like. Operation wire 10
The base end portion is covered and fixed with a metal pipe 13 instead of the flexible tube 12.
【００１４】図３は、図１におけるIII−III断面を示し
ており、この実施の形態においては３本の金属単線１１
が一束にされて可撓性チューブ１２により被覆されてい
る。ただし、用途等に応じて、図４に示されるように４
本の金属単線１１を束ねてもよく、図５に示されるよう
に２本にしてもよい。FIG. 3 shows a cross section taken along line III-III in FIG. 1. In this embodiment, three metal single wires 11 are shown.
Are bundled and covered with the flexible tube 12. However, as shown in FIG.
The single metal wires 11 may be bundled, or may be two as shown in FIG.
【００１５】また図６に示されるように、素線径が相違
する複数の金属単線１１を束ねても差し支えなく、可撓
性チューブ１２として熱収縮チューブを用いて、図７に
示されるように可撓性チューブ１２が全周にわたって金
属単線１１の外面に沿うようにしてもよい。As shown in FIG. 6, a plurality of single metal wires 11 having different wire diameters may be bundled, and a heat-shrinkable tube may be used as the flexible tube 12 as shown in FIG. The flexible tube 12 may extend along the outer surface of the single metal wire 11 over the entire circumference.
【００１６】なお、一般的な使用で操作ワイヤ１０に加
わる平均的圧縮力は２ｋｇ−ｆ程度であり、それによっ
て金属単線１１が座屈しないようにするためには、金属
単線１１の直径が０．１５ｍｍ〜０．４ｍｍの範囲にあ
るとよい。The average compressive force applied to the operation wire 10 in a general use is about 2 kg-f. In order to prevent the single metal wire 11 from buckling, the diameter of the single metal wire 11 must be 0 mm. It may be in the range of .15 mm to 0.4 mm.
【００１７】このように構成された操作ワイヤ１０は、
各金属単線１１が操作ワイヤ１０の軸線と平行に向いて
いるので耐圧縮力に優れ、複数の金属単線１１が並べら
れているので単線に比べると素線径が細くて曲がり癖が
付き難く、またそれらが可撓性チューブ１２によって被
覆されているので、滑りがよくて作動性に優れ側方への
膨らみも確実に抑えられる。The operation wire 10 thus configured is
Each metal single wire 11 is oriented parallel to the axis of the operation wire 10 so that it has excellent compression resistance, and since a plurality of metal single wires 11 are arranged, the wire diameter is smaller than that of the single wires and the bending habit is less likely to occur. In addition, since they are covered with the flexible tube 12, they are well slid, have good operability, and are reliably prevented from bulging laterally.
【００１８】なお、本発明の操作ワイヤ１０は内視鏡用
生検鉗子以外の各種内視鏡用処置具や内視鏡自体に用い
てもよく、図８は、内視鏡５０の操作部に設けられた操
作ノブ５１を回転操作することにより、挿入部先端に設
けられた湾曲部５２を遠隔的に屈曲させるための操作ワ
イヤ１０に用いた例である。The operation wire 10 according to the present invention may be used for various endoscope treatment tools other than the endoscope biopsy forceps and the endoscope itself. This is an example in which an operation wire 10 for remotely bending a bending portion 52 provided at the distal end of an insertion portion by rotating an operation knob 51 provided on the insertion portion is shown.
【００１９】また、本発明の金属単線１１の材質は、ス
テンレス鋼に限らず他の金属材であっても差し支えな
い。The material of the single metal wire 11 of the present invention is not limited to stainless steel, but may be other metal materials.
【００２０】[0020]
【発明の効果】本発明によれば、平行に密着して並べた
複数の金属単線をほぼ全長にわたって可撓性チューブで
被覆、結束して形成したことにより、各金属単線が操作
ワイヤの軸線と平行に向いているので耐圧縮力に優れ、
複数の金属単線が並べられているので単線に比べると素
線径が細くて曲がり癖が付き難く、またそれらが可撓性
チューブによって被覆されているので、滑りがよくて作
動性に優れ側方への膨らみも確実に抑えられる。According to the present invention, a plurality of single metal wires arranged in parallel and close contact with each other are formed by covering and binding with a flexible tube over substantially the entire length, so that each metal single wire is aligned with the axis of the operation wire. Because it is oriented in parallel, it has excellent compression resistance,
Since multiple solid metal wires are arranged, the wire diameter is smaller and harder to bend than single wires, and since they are covered with a flexible tube, they have good sliding and excellent operability. Swelling is also reliably suppressed.
【図１】本発明が適用された内視鏡用生検鉗子の先端部
分と操作ワイヤの側面断面図である。FIG. 1 is a side sectional view of a distal end portion of an endoscope biopsy forceps to which the present invention is applied and an operation wire.
【図２】本発明が適用された内視鏡用生検鉗子の全体構
成を示す側面図である。FIG. 2 is a side view showing an entire configuration of an endoscope biopsy forceps to which the present invention is applied.
【図３】本発明の第１の実施の形態の操作ワイヤの正面
断面図（図１におけるIII−III断面図である。FIG. 3 is a front sectional view (a sectional view taken along line III-III in FIG. 1) of the operation wire according to the first embodiment of the present invention.
【図４】本発明の第２の実施の形態の操作ワイヤの正面
断面図である。FIG. 4 is a front sectional view of an operation wire according to a second embodiment of the present invention.
【図５】本発明の第３の実施の形態の操作ワイヤの正面
断面図である。FIG. 5 is a front sectional view of an operation wire according to a third embodiment of the present invention.
【図６】本発明の第４の実施の形態の操作ワイヤの正面
断面図である。FIG. 6 is a front sectional view of an operation wire according to a fourth embodiment of the present invention.
【図７】本発明の第５の実施の形態の操作ワイヤの正面
断面図である。FIG. 7 is a front sectional view of an operation wire according to a fifth embodiment of the present invention.
【図８】本発明が適用された内視鏡の側面図である。FIG. 8 is a side view of an endoscope to which the present invention is applied.
【図９】従来の内視鏡用操作ワイヤの側面図である。FIG. 9 is a side view of a conventional operation wire for an endoscope.
１０ 操作ワイヤ １１ 金属単線 １２ 可撓性チューブ DESCRIPTION OF SYMBOLS 10 Operation wire 11 Solid metal wire 12 Flexible tube
Claims (3)
側に直線動作を伝達するための内視鏡用操作ワイヤにお
いて、 平行に密着して並べた複数の金属単線をほぼ全長にわた
って可撓性チューブで被覆、結束して形成したことを特
徴とする内視鏡用操作ワイヤ。1. An endoscope operation wire for transmitting a linear motion from one end to the other end by being advanced / retracted in an axial direction, wherein a plurality of single metal wires arranged in close contact in parallel can be extended over substantially the entire length. An operation wire for an endoscope, which is formed by covering and binding with a flexible tube.
請求項１記載の内視鏡用操作ワイヤ。2. The operation wire for an endoscope according to claim 1, wherein said flexible tube is made of fluororesin.
る請求項１記載の内視鏡用操作ワイヤ。3. The operation wire for an endoscope according to claim 1, wherein the plurality of single metal wires have different element diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35530399A JP4566309B2 (en) | 1999-12-15 | 1999-12-15 | Endoscope operation wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35530399A JP4566309B2 (en) | 1999-12-15 | 1999-12-15 | Endoscope operation wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001170001A true JP2001170001A (en) | 2001-06-26 |
| JP4566309B2 JP4566309B2 (en) | 2010-10-20 |
Family
ID=18443141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35530399A Expired - Fee Related JP4566309B2 (en) | 1999-12-15 | 1999-12-15 | Endoscope operation wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4566309B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005319274A (en) * | 2004-04-06 | 2005-11-17 | Pentax Corp | Grip device for endoscope, and magnetic anchor remote guide system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111851A (en) * | 1986-10-31 | 1988-05-17 | オリンパス光学工業株式会社 | Basket type grasping forcept |
| JPH03205043A (en) * | 1989-10-17 | 1991-09-06 | Olympus Optical Co Ltd | Treating device for endoscope |
| JPH1133031A (en) * | 1997-07-16 | 1999-02-09 | Asahi Optical Co Ltd | Treatment apparatus for tip expansible type endoscope |
-
1999
- 1999-12-15 JP JP35530399A patent/JP4566309B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111851A (en) * | 1986-10-31 | 1988-05-17 | オリンパス光学工業株式会社 | Basket type grasping forcept |
| JPH03205043A (en) * | 1989-10-17 | 1991-09-06 | Olympus Optical Co Ltd | Treating device for endoscope |
| JPH1133031A (en) * | 1997-07-16 | 1999-02-09 | Asahi Optical Co Ltd | Treatment apparatus for tip expansible type endoscope |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005319274A (en) * | 2004-04-06 | 2005-11-17 | Pentax Corp | Grip device for endoscope, and magnetic anchor remote guide system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4566309B2 (en) | 2010-10-20 |
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