JP3133460B2 - Endoscope injection tool - Google Patents
Endoscope injection toolInfo
- Publication number
- JP3133460B2 JP3133460B2 JP04058513A JP5851392A JP3133460B2 JP 3133460 B2 JP3133460 B2 JP 3133460B2 JP 04058513 A JP04058513 A JP 04058513A JP 5851392 A JP5851392 A JP 5851392A JP 3133460 B2 JP3133460 B2 JP 3133460B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- distal end
- sleeve
- endoscope
- state
- 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 - Fee Related
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Endoscopes (AREA)
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
ネル内に挿通して体腔内に注射をするための内視鏡用注
射具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope injection tool for inserting into a forceps channel of an endoscope for injection into a body cavity.
【０００２】[0002]
【従来の技術】この種の内視鏡用注射具は、可撓性のあ
る細長い外套管内に進退自在に挿通された送液チューブ
の先端に注射針を取り付け、送液チューブの手元側に取
り付けられた口金に注射器を接続して、注射器から注射
針に薬液等を送り出すことができるようにしている。2. Description of the Related Art In this type of endoscope injection device, an injection needle is attached to the tip of a liquid feed tube which is inserted into a flexible elongated mantle tube so as to be able to advance and retreat, and attached to the proximal side of the liquid feed tube. A syringe is connected to the provided base so that a drug solution or the like can be sent from the syringe to the injection needle.
【０００３】[0003]
【発明が解決しようとする課題】このような内視鏡用注
射具の注射針を患部に突き刺す場合には、患部に対して
ある程度直角に近い角度で正面から突き刺さないと、針
先が滑ってうまくいかない場合が多い。When the injection needle of such an endoscope injection needle is pierced into the affected part, the needle tip slides unless it is pierced from the front at an angle close to a right angle to the affected part to some extent. Often it does not work.
【０００４】そこで、外套管の先端側の部分に、遠隔操
作によって屈曲自在な湾曲部を形成し、手元側操作部か
ら操作ワイヤを牽引することによって湾曲部を屈曲させ
るようにすることが考えられる。そのようにすれば、患
部に対して正面から穿刺することができる。Therefore, it is conceivable to form a bendable portion by remote control on the distal end portion of the mantle tube, and to bend the bendable portion by pulling an operation wire from the operation portion on the hand side. . By doing so, it is possible to puncture the affected part from the front.
【０００５】しかし、そのような湾曲機構は構造が複雑
になってコストが非常に高くつくと共に、操作ワイヤの
固着や切断等による作動不良も発生しがちである。そこ
で本発明は、構造が簡単で作動不良が発生せずに先端側
の部分を確実に屈曲させることができる内視鏡用注射具
を提供することを目的とする。[0005] However, such a bending mechanism has a complicated structure, is very expensive, and is liable to malfunction due to sticking or cutting of the operation wire. Therefore, an object of the present invention is to provide an endoscope injector that has a simple structure and can reliably bend the distal end portion without causing malfunction.
【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、本発明の内視鏡用注射具は、可撓性のある細長い外
套管内に進退自在に挿通された送液チューブの先端に、
上記外套管の先端から出入り自在に注射針を連通接続し
た内視鏡用注射具において、上記外套管の先端側の部分
を予め屈曲した形状に形成しておき、その周囲を囲むよ
うに配置された真直なスリーブを手元側から進退させる
ことにより、上記外套管の先端側の部分が上記スリーブ
内に収容されて真直になる状態と上記外套管の先端側の
部分が上記スリーブから出て元の屈曲した形状に復元す
る状態とを切り換えられるようにしたことを特徴とす
る。Means for Solving the Problems To achieve the above object, an endoscope injection device according to the present invention is provided at a distal end of a liquid feeding tube which is inserted and retracted into a flexible elongated mantle tube.
In an endoscope injection tool in which an injection needle is connected and connected freely from the distal end of the outer tube, the distal end portion of the outer tube is formed in a bent shape in advance, and is disposed so as to surround the periphery thereof. By moving the straight sleeve back and forth from the proximal side, the distal end portion of the outer tube is housed in the sleeve and straightened, and the distal end portion of the outer tube comes out of the sleeve and returns to the original position. It is characterized in that it is possible to switch between a state of restoring a bent shape.
【０００７】[0007]
【実施例】図面を参照して実施例を説明する。図２は内
視鏡用注射具を示しており、図中１は、例えば外径が２
mmで長さが１．５ｍ程度の密巻きコイルからなる可撓性
のある細長い外套管である。An embodiment will be described with reference to the drawings. FIG. 2 shows an injection tool for an endoscope.
This is a flexible and elongated mantle tube composed of a closely wound coil having a length of about 1.5 m and a length of about 1.5 mm.
【０００８】外套管１の手元側には、筒状の本体２が外
套管１に対して同軸に連結接続されており、外套管１内
から本体２内にかけて、フッ素樹脂チューブ等からなる
送液チューブ５が進退自在に挿通されている。A tubular main body 2 is coaxially connected to and connected to the outer tube 1 at the proximal side of the outer tube 1. The tube 5 is inserted to be able to advance and retreat.
【０００９】そして、送液チューブ５の先端には、外套
管１の先端から出入り自在に、注射針６が連通固着され
ている。An injection needle 6 is fixedly connected to the distal end of the liquid feeding tube 5 so as to be able to enter and exit from the distal end of the mantle tube 1.
【００１０】送液チューブ５の手元側には、注射器接続
口金８が、本体２の手元側から突出して進退自在に連通
固着されている。また、送液チューブ５が腰折れせずに
軸方向に進退できるように、注射器接続口金８には、送
液チューブ５の手元側端部近傍を囲む筒状の操作管９が
固着されている。A syringe connecting base 8 is fixedly connected to the liquid supply tube 5 so as to protrude from the proximal side of the main body 2 so as to advance and retreat. In addition, a cylindrical operation tube 9 surrounding the vicinity of the proximal end of the liquid feeding tube 5 is fixed to the syringe connection base 8 so that the liquid feeding tube 5 can advance and retreat in the axial direction without bending.
【００１１】操作管９は本体２内に進退自在に嵌合して
いる。したがって、操作管９を指先で摘んで軸方向に進
退操作させることができ、操作管９を本体２内に押し込
めば、先端から注射針６が突出し、図２に示されるよう
に、操作管９を本体２から引き出せば、注射針６が外套
管１の先端内に引き込まれる。The operation tube 9 is fitted in the main body 2 so as to be able to advance and retreat. Therefore, the operating tube 9 can be moved forward and backward in the axial direction by pinching the operating tube 9 with a fingertip. When the operating tube 9 is pushed into the main body 2, the injection needle 6 protrudes from the tip, and as shown in FIG. Is pulled out of the main body 2, the injection needle 6 is pulled into the distal end of the mantle tube 1.
【００１２】外套管１は、その外周に緩く嵌合する硬質
で真直なスリーブ１１によって全長にわたって囲まれて
いる。スリーブ１１の基端側は、本体２に摺動自在に嵌
合するスライダ１２に固着されており、このスライダ１
２を本体２に沿って軸方向に移動させることによって、
スリーブ１１が外套管１に沿って軸方向に移動する。The mantle tube 1 is surrounded over its entire length by a rigid, straight sleeve 11 which fits loosely around its outer circumference. The proximal end side of the sleeve 11 is fixed to a slider 12 slidably fitted to the main body 2.
By moving 2 axially along the body 2,
The sleeve 11 moves axially along the mantle tube 1.
【００１３】なお、スライダ１２には、本体２に突設さ
れたピン１４が係合する溝１５が軸方向に細長く穿設さ
れており、溝１５の両端部は、図３に示されるように直
角に曲げて形成されている。A groove 15 is formed in the slider 12 to be elongated in the axial direction for engaging a pin 14 projecting from the main body 2, and both ends of the groove 15 are formed as shown in FIG. It is formed by bending at a right angle.
【００１４】したがってスリーブ１１は、ピン１４が溝
１５内で移動し得る範囲で外套管１に沿って移動し、そ
の移動両端部においては、溝１５の直角に曲がった部分
にピン１４を係合させることによって、軸方向に移動し
ないように位置決めをすることができる。Accordingly, the sleeve 11 moves along the mantle tube 1 to the extent that the pin 14 can move within the groove 15, and engages the pin 14 at the right and left bent portions of the groove 15 at both ends of the movement. By doing so, positioning can be performed so as not to move in the axial direction.
【００１５】図１に示されるように、外套管１の先端部
分は、予めほぼ直角に滑らかに屈曲した先端コイル１ａ
によって形成されており、その先端コイル１ａは接続管
４によって手元側のコイルと接続されている。As shown in FIG. 1, the distal end portion of the mantle tube 1 has a distal end coil 1a smoothly bent at a substantially right angle in advance.
The tip coil 1a is connected to the coil on the hand side by a connection pipe 4.
【００１６】したがって、スライダ１２を前方いっぱい
に押し出した状態では、図２に示されるように、スリー
ブ１１が先端コイル１ａを含めて外套管１の先端まで被
さるので、先端コイル１ａはスリーブ１１内に真直に伸
ばされた状態で収容される。Therefore, when the slider 12 is fully pushed forward, as shown in FIG. 2, the sleeve 11 covers the distal end of the mantle tube 1 including the distal coil 1a. It is housed in a straightened state.
【００１７】そして、スライダ１２を後方いっぱいに引
くと、図１に示されるように、スリーブ１１が先端コイ
ル１ａ部分から外れて先端コイル１ａが露出し、先端コ
イル１ａは元の屈曲した形状になる。When the slider 12 is pulled all the way rearward, as shown in FIG. 1, the sleeve 11 comes off the tip coil 1a to expose the tip coil 1a, and the tip coil 1a assumes the original bent shape. .
【００１８】そのような状態にして、操作管９を本体２
内に押し込むと、図３に示されるように、注射針６が先
端から突出して患部の目標部位に穿刺される。そして最
後に、注射器接続口金８に接続した注射器（図示せず）
から薬液を注入すれば、目標部位に対する薬液の注射が
終了する。In such a state, the operation tube 9 is connected to the main body 2.
When pushed inward, as shown in FIG. 3, the injection needle 6 protrudes from the tip and punctures the target site of the affected part. And finally, a syringe (not shown) connected to the syringe connection base 8
When the drug solution is injected from, the injection of the drug solution to the target site is completed.
【００１９】そして、注射針６を引っ込めた後、図２に
示されるようにスリーブ１１を前方にスライドさせれ
ば、外套管１は再び全体として真直な状態に戻る。な
お、使用部位等によっては、外套管１の先端を直角より
小さい角度に曲げて使用したい場合がある。そのような
場合には、図４に示されるように、外套管１１の先端が
先端コイル１ａの途中に位置するようにスライダ１２を
停止させることによって、先端コイル１ａが任意の角度
曲がった状態にすることができる。After retracting the injection needle 6, if the sleeve 11 is slid forward as shown in FIG. 2, the mantle tube 1 returns to its overall straight state again. In some cases, it may be desired to bend the distal end of the mantle tube 1 to an angle smaller than a right angle, depending on the use site or the like. In such a case, as shown in FIG. 4, by stopping the slider 12 so that the tip of the mantle tube 11 is located in the middle of the tip coil 1a, the tip coil 1a is bent at an arbitrary angle. can do.
【００２０】また、本発明は上記実施例に限定されるも
のではなく、例えば図５に示されるように、内視鏡２０
０の鉗子チャンネル２０１にスリーブ１１の役目をさせ
る等、種々の実施態様をとることができる。Further, the present invention is not limited to the above-described embodiment. For example, as shown in FIG.
Various embodiments can be adopted, such as making the zero forceps channel 201 act as the sleeve 11.
【００２１】[0021]
【発明の効果】本発明の内視鏡用注射具によれば、外套
管の先端側の部分を囲むスリーブを進退させることによ
って、極めて簡単な構造で外套管の先端側を任意に屈曲
させることができ、操作ワイヤ等を用いる必要がないの
で作動不良の発生もなく、先端側を確実に屈曲させて目
標部位を正対して穿刺することができる。According to the endoscope injection device of the present invention, the distal end side of the outer tube can be arbitrarily bent with a very simple structure by moving the sleeve surrounding the distal end portion of the outer tube. It is not necessary to use an operation wire or the like, so that operation failure does not occur, and the distal end side can be surely bent to puncture the target portion directly.
【図１】本発明の実施例の屈曲状態の側面断面図であ
る。FIG. 1 is a side sectional view of a bent state of an embodiment of the present invention.
【図２】本発明の実施例の真直な状態の側面断面図であ
る。FIG. 2 is a side sectional view of a straight state according to an embodiment of the present invention.
【図３】本発明の実施例の針突出状態の側面図である。FIG. 3 is a side view of the embodiment of the present invention in a state where a needle is projected.
【図４】本発明の実施例の中程度の屈曲状態の部分側面
図である。FIG. 4 is a partial side view of the embodiment of the present invention in a moderately bent state.
【図５】本発明の他の実施例の屈曲状態の部分側面図で
ある。FIG. 5 is a partial side view of a bent state of another embodiment of the present invention.
１ 外套管 １ａ 先端コイル ５ 送液チューブ ６ 注射針 １１ スリーブ １２ スライダ DESCRIPTION OF SYMBOLS 1 Mantle tube 1a Tip coil 5 Liquid sending tube 6 Injection needle 11 Sleeve 12 Slider
Claims (1)
挿通された送液チューブの先端に、上記外套管の先端か
ら出入り自在に注射針を連通接続した内視鏡用注射具に
おいて、 上記外套管の先端側の部分を予め自然状態において屈曲
した形状に形成しておき、その周囲を囲むように配置さ
れた真直なスリーブを手元側から軸線方向に進退させる
ことにより、上記外套管の先端側の部分が上記スリーブ
内に軸線方向に引き込まれて真直になる状態と上記スリ
ーブから出て元の屈曲した形状に復元する状態とを切り
換えられるようにしたことを特徴とする内視鏡用注射
具。1. An endoscope injection tool in which an injection needle is connected to a distal end of a liquid feeding tube which is inserted into a flexible elongate outer tube so as to be able to advance and retreat, so as to be able to move in and out of the distal end of the outer tube. The distal end portion of the mantle tube is formed in a bent shape in a natural state in advance, and a straight sleeve disposed so as to surround the periphery thereof is advanced and retreated in the axial direction from the hand side, thereby forming the mantle tube. an endoscope portion of the tip side is characterized in that so as to be switched between a state to be restored to the original bent shape out of the state and the upper Symbol sleeve made straight is drawn axially within the sleeve Injection tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04058513A JP3133460B2 (en) | 1992-03-17 | 1992-03-17 | Endoscope injection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04058513A JP3133460B2 (en) | 1992-03-17 | 1992-03-17 | Endoscope injection tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05261063A JPH05261063A (en) | 1993-10-12 |
| JP3133460B2 true JP3133460B2 (en) | 2001-02-05 |
Family
ID=13086514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04058513A Expired - Fee Related JP3133460B2 (en) | 1992-03-17 | 1992-03-17 | Endoscope injection tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3133460B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1176403A (en) * | 1997-07-11 | 1999-03-23 | Olympus Optical Co Ltd | Surgical treatment instrument |
| CN102551846B (en) * | 2012-01-18 | 2014-02-12 | 南京微创医学科技有限公司 | Disposable remote-injection syringe for use under endoscope |
-
1992
- 1992-03-17 JP JP04058513A patent/JP3133460B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05261063A (en) | 1993-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4643187A (en) | High-frequency incising and excising instrument | |
| JP4198754B2 (en) | Endoscopic catheter sheath position control device | |
| EP0738501A1 (en) | Endoscope operative instrument | |
| US6666847B2 (en) | Duodenoscope needle | |
| US20010012945A1 (en) | Method and apparatus for deploying a memory working tip member to or from an approach path to a desired working area | |
| JP3634644B2 (en) | Endoscope operation part | |
| US6086565A (en) | Syringe for endoscope | |
| JPH09122252A (en) | Control device for stylet device | |
| JPH11192206A (en) | Drainage tube retainer for endoscope | |
| JP3133460B2 (en) | Endoscope injection tool | |
| KR101800075B1 (en) | Biopsy forceps with function of steering head | |
| US11478613B2 (en) | Catheter | |
| JPH0938202A (en) | Endoscopic injection instrument | |
| EP0920344B1 (en) | Operating device for a stylet unit | |
| JP2001137251A (en) | Treatment implement | |
| JPH05253178A (en) | Injection means for endoscope | |
| JPH05253299A (en) | Syringe for endoscope | |
| JP2000342600A (en) | Snare for endoscope | |
| JP2005261521A (en) | High-frequency incision tool for endoscope | |
| JP2018191986A (en) | Guide wire guiding means and treatment instrument for basket-type endoscopic device with the same | |
| JPH05261062A (en) | Injection means for endoscope | |
| JPH05245102A (en) | Injection means for endoscope | |
| JP3100739B2 (en) | Endoscope injection tool | |
| JP3709037B2 (en) | Endoscopic syringe | |
| JPH1085331A (en) | Injection tool for endoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071124 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081124 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081124 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091124 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091124 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101124 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101124 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111124 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |