JP2001353123A - Breaking preventer for medical instrument - Google Patents
Breaking preventer for medical instrumentInfo
- Publication number
- JP2001353123A JP2001353123A JP2000177719A JP2000177719A JP2001353123A JP 2001353123 A JP2001353123 A JP 2001353123A JP 2000177719 A JP2000177719 A JP 2000177719A JP 2000177719 A JP2000177719 A JP 2000177719A JP 2001353123 A JP2001353123 A JP 2001353123A
- Authority
- JP
- Japan
- Prior art keywords
- flexible tube
- medical device
- endoscope
- buckle
- breaking
- 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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、内視鏡用処置具
等のように可撓管が操作部に連結されている医療用具の
折れ止めに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical instrument having a flexible tube connected to an operation section, such as a treatment instrument for an endoscope.
【０００２】[0002]
【従来の技術】内視鏡用処置具等のように可撓管が操作
部に連結されている医療用具においては、可撓管の基端
部分が操作部との境界部において急激に曲がると折損し
てしまうので、そのような急激な曲がりを規制するため
の折れ止めが設けられている。2. Description of the Related Art In a medical instrument such as a treatment instrument for an endoscope in which a flexible tube is connected to an operation section, if the base end portion of the flexible tube bends sharply at the boundary with the operation section. A break is provided to restrict such a sharp bend because the break is caused.
【０００３】そのような内視鏡用処置具等の医療用具の
折れ止めは、一般にステンレス鋼線を一定の径で螺旋状
に巻いたコイルパイプによって形成されている。[0003] Such a medical instrument such as a treatment instrument for an endoscope is generally formed by a coil pipe in which a stainless steel wire is spirally wound with a constant diameter.
【０００４】[0004]
【発明が解決しようとする課題】コイルパイプは、素線
の弾性限界内の外力に対しては優れたバネ性を有してい
て、可撓管の折れ止めとしての効果を発揮するが、一本
の細い素線を巻いただけの構造なので、素線に弾性限界
を越える曲げ力が作用すると、図６に示されるように簡
単に折れてしまう。The coil pipe has an excellent spring property against an external force within the elastic limit of the wire, and exhibits an effect of preventing the flexible pipe from breaking. Since the structure is such that only a thin wire is wound, when a bending force exceeding the elastic limit is applied to the wire, the wire is easily broken as shown in FIG.
【０００５】したがって、内視鏡用鉗子のような処置具
において可撓管１と操作部１０との連結部に用いられて
いる折れ止め５は、高いところから落下して床に強く叩
きつけられたり、使用時に強い外力が作用したときに
は、図７に示されるように、集中応力が作用する根元で
折れてしまうことが珍しくない。Accordingly, in a treatment tool such as forceps for an endoscope, the buckle 5 used for a connecting portion between the flexible tube 1 and the operating portion 10 falls from a high place and is strongly hit against the floor. When a strong external force is applied during use, it is not uncommon for the device to break at the root where the concentrated stress acts, as shown in FIG.
【０００６】そこで本発明は、あらゆる方向に柔軟に曲
がって可撓管の根元の折れ止めとしてよく機能し、しか
も強い外力が作用しても折れない医療用具の折れ止めを
提供することを目的とする。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a medical device which can bend flexibly in all directions and function well as a stopper at the root of a flexible tube, and which does not break even when a strong external force acts. I do.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の医療用具の折れ止めは、剛体である操作部
に連結された可撓管の基端部分が操作部との境界部付近
で急激に曲がるのを規制するための医療用具の折れ止め
において、超弾性合金製パイプにより形成されて一端が
操作部に連結されていることを特徴とするものである。In order to achieve the above object, a medical device according to the present invention is provided such that a base portion of a flexible tube connected to an operation portion which is a rigid body has a boundary portion with the operation portion. In a buckle of a medical device for restricting sharp bending in the vicinity, the medical device is characterized by being formed of a superelastic alloy pipe and having one end connected to an operation unit.
【０００８】なお、超弾性合金製パイプが可撓管の基端
付近を囲む状態に配置されていてもよく、可撓管の基端
付近の内側に挿入された状態に配置されていてもよい。
或いは、可撓管の基端が超弾性合金製パイプを介して操
作部に連結されていてもよい。The superelastic alloy pipe may be arranged so as to surround the vicinity of the base end of the flexible tube, or may be arranged so as to be inserted inside the vicinity of the base end of the flexible tube. .
Alternatively, the base end of the flexible tube may be connected to the operation unit via a superelastic alloy pipe.
【０００９】また、医療用具が内視鏡用処置具であって
もよく、内視鏡であってもよい。The medical device may be an endoscope treatment tool or an endoscope.
【００１０】[0010]
【発明の実施の形態】図面を参照して本発明の実施例を
説明する。図２は、内視鏡の処置具挿通チャンネルに挿
脱使用される内視鏡用鉗子を示しており、可撓管１は、
例えばステンレス鋼線を一定の径で密着巻きしたコイル
パイプにより形成されており、その外径寸法は１〜３ｍ
ｍ程度、長さは５０ｃｍ〜２ｍ程度の範囲である。Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows an endoscope forceps to be inserted into and removed from the treatment instrument insertion channel of the endoscope, and the flexible tube 1
For example, it is formed by a coil pipe in which a stainless steel wire is tightly wound with a constant diameter, and its outer diameter is 1 to 3 m.
m and the length is in the range of about 50 cm to 2 m.
【００１１】可撓管１内には、軸線方向に進退自在に操
作ワイヤ２が挿通配置されており、その操作ワイヤ２を
進退操作するための操作部１０が可撓管１の基端に連結
され、操作ワイヤ２によって開閉駆動される鉗子片３が
可撓管１の先端部分に配置されている。An operation wire 2 is inserted into the flexible tube 1 so as to be able to advance and retreat in the axial direction. An operation unit 10 for operating the operation wire 2 is connected to the base end of the flexible tube 1. A forceps piece 3 driven to be opened and closed by an operation wire 2 is disposed at a distal end portion of the flexible tube 1.
【００１２】操作部１０においては、可撓管１の基端が
連結固定されている剛体である操作部本体１１に対して
スライド自在に配置された操作片１２に、操作ワイヤ２
の基端が連結されており、その操作片１２を進退操作す
ることにより、操作ワイヤ２を介して鉗子片３が開閉さ
れる。In the operating section 10, an operating piece 12 slidably disposed on an operating section main body 11, which is a rigid body to which the base end of the flexible tube 1 is connected and fixed, is provided with an operating wire 2
When the operation piece 12 is moved forward and backward, the forceps piece 3 is opened and closed via the operation wire 2.
【００１３】そのように構成された内視鏡用鉗子の可撓
管１の基端部分には、操作部１０との境界部付近で可撓
管１が急激に曲げられるのを規制するための折れ止め５
が配置されている。[0013] The proximal end of the flexible tube 1 of the endoscope forceps having such a structure is provided for restricting the flexible tube 1 from being sharply bent near the boundary with the operation unit 10. Buckle 5
Is arranged.
【００１４】図１は、そのような折れ止め５の第１の実
施例を示しており、例えばニッケル−チタン合金系の超
弾性合金製パイプからなる折れ止め５が、可撓管１の基
端付近を囲む状態に配置されている。折れ止め５の基端
側は操作部本体１１に固定され、先端側は自由端になっ
ている。FIG. 1 shows a first embodiment of such a buckle 5, in which a buckle 5 made of, for example, a nickel-titanium alloy superelastic alloy pipe is provided at the base end of the flexible tube 1. It is arranged so as to surround the vicinity. The proximal end of the buckle 5 is fixed to the operation section main body 11, and the distal end is a free end.
【００１５】ニッケル−チタン合金系の超弾性合金は、
歪み率が５〜８％と非常に大きく、可撓管１の外径が１
ｍｍの場合、折れ止め５は、内径を１．２ｍｍとする
と、半径１２ｍｍ程度の曲率半径まで曲がり癖が付か
ず、外力が取り除かれれば元の真っ直ぐな状態に戻る。The nickel-titanium alloy superelastic alloy is:
The distortion rate is very large, 5 to 8%, and the outer diameter of the flexible tube 1 is 1
In the case of mm, if the inner diameter of the buckle 5 is 1.2 mm, the buckle 5 does not have a bending habit up to a radius of curvature of about 12 mm, and returns to its original straight state when the external force is removed.
【００１６】同様に、可撓管１の外径が３ｍｍの場合、
折れ止め５は、内径を３．２ｍｍとすると、半径３０ｍ
ｍ程度の曲率半径まで曲がり癖が付かず、外力が取り除
かれれば元の真っ直ぐな状態に戻る。Similarly, when the outer diameter of the flexible tube 1 is 3 mm,
The buckle 5 has a radius of 30 m when the inner diameter is 3.2 mm.
It does not have a bending habit up to a radius of curvature of about m, and returns to its original straight state when the external force is removed.
【００１７】このように、折れ止め５は、超弾性合金製
パイプを用いることにより、あらゆる方向に柔軟に曲が
って可撓管の根元の折れ止めとしてよく機能し、しかも
強い外力が作用しても曲がり癖が付かず、折れることも
ない。As described above, the buckle 5 is made of a superelastic alloy pipe, so that it can bend flexibly in all directions and function well as a buckle at the root of the flexible tube, and even if a strong external force acts. There is no bending habit and no break.
【００１８】図３及び図４は、内視鏡用処置具に用いら
れる折れ止め５の第２及び第３の実施例を示しており、
図３に示される第２の実施例は、可撓管１の基端付近の
内側に折れ止め５を挿入配置したものであり、図４に示
される第３の実施例は、折れ止め５を介して可撓管１の
基端を操作部本体１１に連結したものである。いずれの
場合も、折れ止め５として超弾性合金製パイプを用いる
ことにより、第１の実施例と同様の作用効果を得ること
ができる。FIGS. 3 and 4 show a second and a third embodiment of the buckle 5 used in the treatment tool for an endoscope.
In the second embodiment shown in FIG. 3, the buckle 5 is inserted and arranged inside the vicinity of the base end of the flexible tube 1, and in the third embodiment shown in FIG. The proximal end of the flexible tube 1 is connected to the operation unit main body 11 through the flexible tube 1. In any case, by using a pipe made of a superelastic alloy as the buckle 5, the same operation and effect as in the first embodiment can be obtained.
【００１９】図５は、内視鏡の挿入部可撓管１０１の折
れ止め１０５を超弾性合金製パイプにより形成して、そ
の一端を剛体である操作部１１０の下端に連結したもの
である。FIG. 5 shows a structure in which the bending stopper 105 of the flexible tube 101 of the insertion section of the endoscope is formed by a superelastic alloy pipe, and one end thereof is connected to the lower end of the rigid operation section 110.
【００２０】挿入部可撓管１０１内には、その先端に配
置された対物光学系１０３により結像された観察像を接
眼光学系１０４に伝達するイメージガイドファイババン
ドル１０２等が挿通配置されている。An image guide fiber bundle 102 for transmitting an observation image formed by the objective optical system 103 disposed at the distal end of the flexible tube 101 to the eyepiece optical system 104 is inserted through the flexible tube 101. .
【００２１】このように、本発明は各種医療用具の折れ
止めに適用することができる。As described above, the present invention can be applied to breaking of various medical devices.
【００２２】[0022]
【発明の効果】本発明によれば、折れ止めを超弾性合金
製パイプにより形成してその一端を操作部に連結したこ
とにより、あらゆる方向に柔軟に曲がって可撓管の根元
の折れ止めとしてよく機能し、しかも強い外力が作用し
ても折れない優れた特性を得ることができる。According to the present invention, the buckle is formed of a super-elastic alloy pipe and one end thereof is connected to the operating portion, so that the buckle can be bent flexibly in all directions and serve as a buckle at the base of the flexible tube. Excellent characteristics can be obtained that function well and do not break even when a strong external force acts.
【図１】本発明の第１の実施例の折れ止め部分の縦断面
図である。FIG. 1 is a longitudinal sectional view of a buckling preventing portion according to a first embodiment of the present invention.
【図２】本発明が適用された内視鏡用鉗子の外観図であ
る。FIG. 2 is an external view of a forceps for an endoscope to which the present invention is applied.
【図３】本発明の第２の実施例の折れ止め部分の縦断面
図である。FIG. 3 is a longitudinal sectional view of a buckling preventing portion according to a second embodiment of the present invention.
【図４】本発明の第３の実施例の折れ止め部分の縦断面
図である。FIG. 4 is a longitudinal sectional view of a buckling preventing portion according to a third embodiment of the present invention.
【図５】本発明が適用された内視鏡の外観図である。FIG. 5 is an external view of an endoscope to which the present invention is applied.
【図６】コイルパイプが折れた状態の斜視図である。FIG. 6 is a perspective view showing a state where a coil pipe is broken.
【図７】従来の内視鏡用鉗子の折れ止めが折れた状態の
外観図である。FIG. 7 is an external view of a conventional endoscope forceps in a state where a buckle is broken.
１ 可撓管 ２ 操作ワイヤ ５ 折れ止め １０ 操作部 １１ 操作部本体 １０１ 挿入部可撓管 １０５ 折れ止め １１０ 操作部 DESCRIPTION OF SYMBOLS 1 Flexible tube 2 Operation wire 5 Break prevention 10 Operation part 11 Operation part main body 101 Insertion part flexible tube 105 Break prevention 110 Operation part
Claims (6)
端部分が上記操作部との境界部付近で急激に曲がるのを
規制するための医療用具の折れ止めにおいて、 超弾性合金製パイプにより形成されて一端が上記操作部
に連結されていることを特徴とする医療用具の折れ止
め。1. A medical device for preventing a flexible tube connected to a rigid operation unit from being sharply bent near a boundary with the operation unit. A medical device, comprising a pipe made of a pipe and one end connected to the operating portion.
端付近を囲む状態に配置されている請求項１記載の医療
用具の折れ止め。2. The medical device according to claim 1, wherein the superelastic alloy pipe is disposed so as to surround the proximal end of the flexible tube.
端付近の内側に挿入された状態に配置されている請求項
１記載の医療用具の折れ止め。3. The medical device according to claim 1, wherein the superelastic alloy pipe is inserted inside the vicinity of a proximal end of the flexible tube.
プを介して上記操作部に連結されている請求項１記載の
医療用具の折れ止め。4. The medical device according to claim 1, wherein a base end of the flexible tube is connected to the operating portion via the superelastic alloy pipe.
項１ないし４のいずれかの項に記載の医療用具の折れ止
め。5. The medical instrument according to claim 1, wherein the medical instrument is a treatment tool for an endoscope.
し４のいずれかの項に記載の医療用具の折れ止め。6. The medical device according to claim 1, wherein the medical device is an endoscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000177719A JP4463945B2 (en) | 2000-06-14 | 2000-06-14 | Medical device fold prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000177719A JP4463945B2 (en) | 2000-06-14 | 2000-06-14 | Medical device fold prevention |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001353123A true JP2001353123A (en) | 2001-12-25 |
| JP4463945B2 JP4463945B2 (en) | 2010-05-19 |
Family
ID=18679268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000177719A Expired - Fee Related JP4463945B2 (en) | 2000-06-14 | 2000-06-14 | Medical device fold prevention |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4463945B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010279400A (en) * | 2009-06-02 | 2010-12-16 | Hoya Corp | Handling appliance for endoscope |
| CN114146364A (en) * | 2021-12-09 | 2022-03-08 | 山东泽普医疗科技有限公司 | Dynamic force feedback constant speed training device |
-
2000
- 2000-06-14 JP JP2000177719A patent/JP4463945B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010279400A (en) * | 2009-06-02 | 2010-12-16 | Hoya Corp | Handling appliance for endoscope |
| CN114146364A (en) * | 2021-12-09 | 2022-03-08 | 山东泽普医疗科技有限公司 | Dynamic force feedback constant speed training device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4463945B2 (en) | 2010-05-19 |
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