JP2002306606A - Puncture instrument for endoscope - Google Patents
Puncture instrument for endoscopeInfo
- Publication number
- JP2002306606A JP2002306606A JP2001119016A JP2001119016A JP2002306606A JP 2002306606 A JP2002306606 A JP 2002306606A JP 2001119016 A JP2001119016 A JP 2001119016A JP 2001119016 A JP2001119016 A JP 2001119016A JP 2002306606 A JP2002306606 A JP 2002306606A
- Authority
- JP
- Japan
- Prior art keywords
- puncture needle
- endoscope
- tip
- puncture
- distal end
- 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.)
- Withdrawn
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、内視鏡の処置具
挿通路に通されて体内における穿刺処置を行うために用
いられる内視鏡用穿刺具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a puncture device for an endoscope which is used for performing a puncture treatment in a body through a treatment tool insertion passage of an endoscope.
【０００２】[0002]
【従来の技術】内視鏡用穿刺具は、一般に、先側が鋭角
になるように先端が斜めに切り削がれた可撓性を有する
ステンレス鋼パイプ製の穿刺針が、内視鏡の処置具挿通
路に挿脱される外套チューブの先端内に軸線方向に進退
自在に配置されていて、穿刺針を、外套チューブの基端
側からの進退操作により外套チューブの先端から突没さ
せることができるようになっている。2. Description of the Related Art Generally, a puncture needle for an endoscope is a puncture needle made of a flexible stainless steel pipe whose tip is cut obliquely so as to form an acute angle on the front side. The puncture needle is disposed so as to be able to advance and retreat in the axial direction within the distal end of the mantle tube inserted into and removed from the tool insertion passage, and the puncture needle can be protruded and retracted from the distal end of the mantle tube by advancing and retracting operations from the base end side of the mantle tube. I can do it.
【０００３】[0003]
【発明が解決しようとする課題】上述のような内視鏡用
穿刺具は、内視鏡の処置具挿通路に通される際には、穿
刺針の先端を外套チューブの先端から少し引っ込めた状
態で、手元側から処置具挿通路に押し込まれる。When the puncture device for an endoscope as described above is passed through the treatment instrument insertion passage of the endoscope, the distal end of the puncture needle is slightly retracted from the distal end of the mantle tube. In this state, it is pushed into the treatment instrument insertion passage from the hand side.
【０００４】したがって、いわゆる前方視型の内視鏡の
ように処置具挿通路が出口付近で真っ直ぐに形成されて
いる場合は問題ないが、例えば超音波内視鏡等のように
処置具挿通路が出口の直前でカーブしている場合には、
図６に示されるように、処置具挿通路５２のカーブ部分
を通過する際に外套チューブ１の内面に穿刺針２の先端
２ａが突き刺さって、作動不良になってしまう場合があ
る。５３は、超音波内視鏡５０の処置具突出口である。Therefore, there is no problem when the treatment instrument insertion passage is formed straight near the exit as in a so-called forward-looking endoscope, but there is no problem with the treatment instrument insertion passage such as an ultrasonic endoscope. Is curving just before the exit,
As shown in FIG. 6, when passing through the curved portion of the treatment instrument insertion passage 52, the tip 2a of the puncture needle 2 may pierce the inner surface of the mantle tube 1, resulting in malfunction. Reference numeral 53 denotes a treatment tool outlet of the ultrasonic endoscope 50.
【０００５】そこで本発明は、内視鏡の処置具挿通路が
出口付近でカーブしていても、そこを通過する際に外套
チューブの内面に穿刺針の先端が突き刺さらず、穿刺針
を処置具挿通路の出口からスムーズに突出させることが
できる内視鏡用穿刺具を提供することを目的とする。Therefore, according to the present invention, even if the treatment instrument insertion passage of the endoscope is curved near the exit, the tip of the puncture needle does not pierce the inner surface of the mantle tube when passing through the endoscope, and the puncture needle is treated. An object of the present invention is to provide a puncture device for an endoscope that can smoothly project from an outlet of a device insertion passage.
【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、本発明の内視鏡用穿刺具は、可撓性を有するステン
レス鋼パイプ製の穿刺針が、内視鏡の処置具挿通路に挿
脱される可撓性の外套チューブの先端内に軸線方向に進
退自在に配置され、穿刺針を外套チューブの先端から突
没させるように外套チューブの基端側から進退操作でき
るようにした内視鏡用穿刺具において、穿刺針の先端
を、先側が鋭角になるように斜めに切り削ぐと共に、切
り削ぎ面の裏側に位置する穿刺針の最先端部分の外面
を、先側が窄まったテーパ状に形成したものである。In order to achieve the above object, a puncture device for an endoscope according to the present invention is characterized in that a puncture needle made of a flexible stainless steel pipe is inserted into a treatment tool insertion passage of the endoscope. The distal end of a flexible mantle tube inserted into and removed from the mantle tube is disposed so as to be able to advance and retreat in the axial direction so that the puncture needle can be advanced and retracted from the base end side of the mantle tube so as to protrude and retract from the distal end of the mantle tube. In the puncture device for an endoscope, the tip of the puncture needle is cut obliquely so that the tip side becomes an acute angle, and the outer surface of the tip of the puncture needle located on the back side of the cut-off surface has a narrowed front side. It is formed in a tapered shape.
【０００７】なお、テーパ状部分が穿刺針の最先端部分
の管壁を切り削いでいるだけであって、管壁の内周面に
は達していないようにすることにより、針先の縁部形状
が滑らかになる。[0007] The tapered portion only cuts the tube wall at the foremost portion of the puncture needle, but does not reach the inner peripheral surface of the tube wall. The shape becomes smooth.
【０００８】[0008]
【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３は内視鏡用穿刺具の全体構成を示してお
り、図示されていない内視鏡の処置具挿通路に挿脱され
る可撓性の外套チューブ１は、例えば外径が２ｍｍ程度
で長さが１〜２ｍ程度の四フッ化エチレン樹脂チューブ
等によって形成されている。Embodiments of the present invention will be described with reference to the drawings. FIG. 3 shows the entire configuration of the endoscope puncture device. A flexible mantle tube 1 that is inserted into and removed from a treatment tool insertion passage of an endoscope (not shown) has, for example, an outer diameter of about 2 mm. It is formed of a tetrafluoroethylene resin tube having a length of about 1 to 2 m.
【０００９】外套チューブ１内には、肉厚が薄くて可撓
性のあるステンレス鋼パイプからなる穿刺針２が、軸線
方向に進退自在に全長にわたって挿通配置されており、
穿刺針２内には、詰まり防止用の挿脱自在なスタイレッ
ト３が全長にわたって挿通されている。スタイレット３
は、例えば細いステンレス鋼線等のような可撓性に富ん
だ材料によって形成されている。A puncture needle 2 made of a thin, flexible stainless steel pipe is inserted through the entire length of the outer tube 1 so as to be able to advance and retreat in the axial direction.
An insertable / removable stylet 3 for preventing clogging is inserted through the entire length of the puncture needle 2. Stylet 3
Is formed of a highly flexible material such as a thin stainless steel wire.
【００１０】外套チューブ１の基端は、操作部１０の操
作部本体１１に連結固定されており、操作部本体１１内
を通過する穿刺針２の基端突端部には、穿刺針２内に薬
液等を送り込むための注射口金１２が取り付けられてい
る。１３はスタイレット３の摘みであり、注射口金１２
に対して係脱自在に配置されている。A proximal end of the mantle tube 1 is connected and fixed to an operating section main body 11 of the operating section 10. A proximal end of the puncture needle 2 passing through the operating section main body 11 has a proximal end inside the puncture needle 2. An injection mouthpiece 12 for feeding a chemical solution or the like is attached. Reference numeral 13 denotes a stylet 3 knob,
It is arranged so that it can be freely disengaged from.
【００１１】１４は、操作部１０において穿刺針２に固
着されたストッパであり、操作部本体１１に取り付けら
れたゴム製のＯリング１５がストッパ１４に対して弾力
的にクリック係合することにより、図３の状態（即ち、
穿刺針２の先端２ａが外套チューブ１の先端内に収納さ
れた状態）が保持される。Reference numeral 14 denotes a stopper fixed to the puncture needle 2 in the operation unit 10. The rubber O-ring 15 attached to the operation unit main body 11 is elastically click-engaged with the stopper 14. , The state of FIG.
The state where the distal end 2a of the puncture needle 2 is stored in the distal end of the mantle tube 1) is maintained.
【００１２】このような構成により、注射口金１２を操
作部本体１１に対して軸線方向に進退操作することによ
り、外套チューブ１の先端から穿刺針２の先端２ａを任
意に突没させることができる。With this configuration, the tip 2a of the puncture needle 2 can be arbitrarily protruded and retracted from the tip of the mantle tube 1 by operating the injection mouthpiece 12 in the axial direction with respect to the operation unit body 11. .
【００１３】また、操作部本体１１には側方に突出する
注入口金１６が形成されており、外套チューブ１と穿刺
針２との間の隙間に注入口金１６から造影剤や洗浄液等
を注入することができる。An injection port 16 is formed on the operation section main body 11 so as to protrude to the side. be able to.
【００１４】図１と図２は、外套チューブ１の先端部分
を示しており、図１は、穿刺針２の先端２ａが外套チュ
ーブ１の先端内に収納された状態を示し、図２は、穿刺
針２の先端２ａが外套チューブ１の先端から突出し、ス
タイレット３が後方に抜き出された状態を示している。FIGS. 1 and 2 show a distal end portion of the mantle tube 1. FIG. 1 shows a state in which the distal end 2a of the puncture needle 2 is housed in the distal end of the mantle tube 1. FIG. This shows a state in which the distal end 2a of the puncture needle 2 protrudes from the distal end of the mantle tube 1, and the stylet 3 is pulled out rearward.
【００１５】穿刺針２の先端部分は、先端２ａが鋭角に
なるように斜めに切り削がれていて、その切り削ぎ面２
ｂの裏側に位置する穿刺針２の最先端部分の外面が、先
側が窄まったテーパ状（テーパ面２ｃ）に形成され、切
り削ぎ面２ｂとテーパ面２ｃとが交わる先端２ａが針先
になっている。The tip of the puncture needle 2 is cut obliquely so that the tip 2a is at an acute angle.
The outer surface of the distal end portion of the puncture needle 2 located on the back side of b is formed in a tapered shape (tapered surface 2c) with a tapered tip, and the tip 2a where the cut-off surface 2b and the tapered surface 2c intersect is the needle tip. Has become.
【００１６】なお、テーパ面２ｃは、穿刺針２の最先端
部分の管壁を切り削いでいるだけであり、管壁の内周面
には達していない。したがって、穿刺針２の先端２ａは
滑らかな刃状になっている。The tapered surface 2c merely cuts off the tube wall at the tip of the puncture needle 2 and does not reach the inner peripheral surface of the tube wall. Therefore, the tip 2a of the puncture needle 2 has a smooth blade shape.
【００１７】図４は、先端部分に超音波プローブ５１が
配置された超音波内視鏡５０の処置具挿通路５２内に上
記実施例の内視鏡用穿刺具が挿入されて、超音波内視鏡
５０の処置具突出口５３から突出する直前の状態を示し
ている。FIG. 4 shows a state in which the puncture device for an endoscope of the above embodiment is inserted into a treatment tool insertion passage 52 of an ultrasonic endoscope 50 in which an ultrasonic probe 51 is disposed at a distal end portion. The state immediately before protruding from the treatment tool outlet 53 of the endoscope 50 is shown.
【００１８】この位置における処置具挿通路５２は、内
視鏡用穿刺具等を超音波プローブ５１による超音波走査
範囲に突出させることができるように、処置具突出口５
３の直前部分において小さな曲率半径で滑らかに曲げら
れており、それに沿って外套チューブ１が進んで行く。The treatment instrument insertion passage 52 at this position is provided with a treatment instrument ejection port 5 so that an endoscopic puncture instrument or the like can be projected into the ultrasonic scanning range of the ultrasonic probe 51.
3 is smoothly bent at a small radius of curvature immediately before, along which the mantle tube 1 advances.
【００１９】その際、穿刺針２の切り削ぎ面２ｂの裏側
に位置する最先端部分にテーパ面２ｃが形成されている
ことにより、針先である穿刺針２の先端２ａが、滑らか
に曲がった外套チューブ１の内面から浮いた状態になっ
ているので、外套チューブ１の内面に突き刺さる状態に
ならない。At this time, the distal end 2a of the puncture needle 2 which is the tip of the puncture needle 2 is smoothly bent because the tapered surface 2c is formed at the foremost portion located on the back side of the cutting surface 2b of the puncture needle 2. Since it is floating from the inner surface of the mantle tube 1, it does not pierce the inner surface of the mantle tube 1.
【００２０】そして、操作部１０において穿刺針２を押
し込む操作をすることにより、図５に示されるように、
穿刺針２の先端２ａが外套チューブ１の先端から突出し
て目標とする患部等に対して穿刺処置を行うことができ
る。Then, by performing an operation of pushing the puncture needle 2 in the operation unit 10, as shown in FIG.
The distal end 2a of the puncture needle 2 protrudes from the distal end of the mantle tube 1 to perform a puncture treatment on a target diseased part or the like.
【００２１】[0021]
【発明の効果】本発明によれば、穿刺針の先端を、先側
が鋭角になるように斜めに切り削ぐと共に、切り削ぎ面
の裏側に位置する穿刺針の最先端部分の外面を、先側が
窄まったテーパ状に形成したことにより、内視鏡の処置
具挿通路が出口付近でカーブしていても、そこを通過す
る際に外套チューブの内面に穿刺針の先端が突き刺さら
ず、穿刺針を処置具挿通路の出口からスムーズに突出さ
せることができる。According to the present invention, the tip of the puncture needle is cut obliquely so that the tip side is at an acute angle, and the outer surface of the tip end portion of the puncture needle located on the back side of the cut-off surface is cut forward. Even when the treatment instrument insertion passage of the endoscope is curved near the exit by forming it into a tapered tapered shape, the tip of the puncture needle does not pierce the inner surface of the mantle tube when passing through it, and puncture The needle can be smoothly projected from the outlet of the treatment instrument insertion passage.
【図１】本発明の実施例の内視鏡用穿刺具の穿刺針が引
っ込んだ状態の先端部分の側面断面図である。FIG. 1 is a side cross-sectional view of a distal end portion of a puncture device for an endoscope according to an embodiment of the present invention in a state where a puncture needle is retracted.
【図２】本発明の実施例の内視鏡用穿刺具の穿刺針が突
出した状態の先端部分の側面断面図である。FIG. 2 is a side sectional view of a distal end portion of the puncture device for an endoscope according to the embodiment of the present invention in a state where a puncture needle is protruded.
【図３】本発明の実施例の内視鏡用穿刺具の全体構成を
示す側面断面図である。FIG. 3 is a side cross-sectional view showing the entire configuration of the endoscope puncture device according to the embodiment of the present invention.
【図４】本発明の実施例の内視鏡用穿刺具の先端部分が
超音波内視鏡の処置具突出口から突出する直前の状態の
側面断面図である。FIG. 4 is a side cross-sectional view showing a state immediately before a distal end portion of the puncture device for an endoscope according to the embodiment of the present invention projects from a treatment tool outlet of an ultrasonic endoscope.
【図５】本発明の実施例の内視鏡用穿刺具の先端部分が
超音波内視鏡の処置具突出口から突出した状態の側面断
面図である。FIG. 5 is a side sectional view showing a state in which a distal end portion of the puncture device for an endoscope according to the embodiment of the present invention projects from a treatment tool outlet of an ultrasonic endoscope.
【図６】従来の内視鏡用穿刺具の先端部分が超音波内視
鏡の処置具突出口から突出する直前の状態の側面断面図
である。FIG. 6 is a side cross-sectional view showing a state immediately before a distal end portion of a conventional endoscope puncture tool projects from a treatment tool outlet of an ultrasonic endoscope.
１ 外套チューブ ２ 穿刺針 ２ａ 先端 ２ｂ 切り削ぎ面 ２ｃ テーパ面 ３ スタイレット １０ 操作部 ５２ 処置具挿通路 ５３ 処置具突出口 DESCRIPTION OF SYMBOLS 1 Outer tube 2 Puncture needle 2a Tip 2b Cutting surface 2c Tapered surface 3 Stylet 10 Operating part 52 Treatment tool insertion passage 53 Treatment tool protrusion
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4C061 GG15 4C066 AA01 AA09 BB01 CC01 FF03 KK03 4C167 AA23 AA77 BB02 BB26 CC06 CC29 GG04 GG22 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C061 GG15 4C066 AA01 AA09 BB01 CC01 FF03 KK03 4C167 AA23 AA77 BB02 BB26 CC06 CC29 GG04 GG22
Claims (2)
刺針が、内視鏡の処置具挿通路に挿脱される可撓性の外
套チューブの先端内に軸線方向に進退自在に配置され、
上記穿刺針を上記外套チューブの先端から突没させるよ
うに上記外套チューブの基端側から進退操作できるよう
にした内視鏡用穿刺具において、 上記穿刺針の先端を、先側が鋭角になるように斜めに切
り削ぐと共に、上記切り削ぎ面の裏側に位置する上記穿
刺針の最先端部分の外面を、先側が窄まったテーパ状に
形成したことを特徴とする内視鏡用穿刺具。1. A puncture needle made of a stainless steel pipe having flexibility is disposed in a distal end of a flexible mantle tube inserted into and removed from a treatment instrument insertion passage of an endoscope so as to be able to advance and retreat in the axial direction. ,
An endoscope puncture device that can be advanced and retracted from the proximal end side of the mantle tube so that the puncture needle can be protruded and retracted from the distal end of the mantle tube, wherein the distal end of the puncture needle has an acute angle at the front end. A puncture device for an endoscope, wherein the outer surface of the distal end portion of the puncture needle located on the back side of the cut surface is formed in a tapered shape with a tapered tip.
部分の管壁を切り削いでいるだけであって、上記管壁の
内周面には達していない請求項１記載の内視鏡用穿刺
具。2. The endoscope according to claim 1, wherein the tapered portion only cuts a tube wall at a tip end portion of the puncture needle and does not reach an inner peripheral surface of the tube wall. Puncture tool for mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001119016A JP2002306606A (en) | 2001-04-18 | 2001-04-18 | Puncture instrument for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001119016A JP2002306606A (en) | 2001-04-18 | 2001-04-18 | Puncture instrument for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002306606A true JP2002306606A (en) | 2002-10-22 |
Family
ID=18969303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001119016A Withdrawn JP2002306606A (en) | 2001-04-18 | 2001-04-18 | Puncture instrument for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002306606A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004098681A1 (en) | 2003-05-06 | 2004-11-18 | Asahi Intecc Co., Ltd. | Medical liquid-injecting device |
| US7985204B2 (en) | 2004-10-19 | 2011-07-26 | Asahi Intecc Co., Ltd. | Reagent injection device |
| US8206356B2 (en) | 2005-09-21 | 2012-06-26 | Asahi Intecc Co., Ltd. | Reagent injection apparatus and method of producing the same |
| US8298187B2 (en) | 2009-07-07 | 2012-10-30 | Cook Medical Technologies Llc | Fluid injection device |
| WO2012165303A1 (en) * | 2011-05-27 | 2012-12-06 | オリンパスメディカルシステムズ株式会社 | Puncture needle for ultrasound |
| WO2013168498A1 (en) * | 2012-05-10 | 2013-11-14 | オリンパスメディカルシステムズ株式会社 | Treatment tool for endoscope |
| US9616204B2 (en) | 2012-03-02 | 2017-04-11 | Cook Medical Technologies LLC. | Dilation cap for endoluminal device |
| CN114533213A (en) * | 2020-11-24 | 2022-05-27 | 奥林巴斯株式会社 | Treatment method and device with ultrasound endoscope |
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| JPH06502776A (en) * | 1990-09-07 | 1994-03-31 | ヘイムレイド、ベント | cannula |
| JPH08150145A (en) * | 1994-09-29 | 1996-06-11 | Olympus Optical Co Ltd | Sticking needle for endoscope |
| JPH0956815A (en) * | 1995-04-28 | 1997-03-04 | Yoshikuni Saito | Medical hollow needle and manufacture of the same |
| JPH0938202A (en) * | 1995-08-04 | 1997-02-10 | Asahi Optical Co Ltd | Endoscopic injection instrument |
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| WO2004098681A1 (en) | 2003-05-06 | 2004-11-18 | Asahi Intecc Co., Ltd. | Medical liquid-injecting device |
| US7172576B2 (en) | 2003-05-06 | 2007-02-06 | Asahi Intecc Co., Ltd. | Medicinal-liquid injection apparatus |
| US7985204B2 (en) | 2004-10-19 | 2011-07-26 | Asahi Intecc Co., Ltd. | Reagent injection device |
| US8206356B2 (en) | 2005-09-21 | 2012-06-26 | Asahi Intecc Co., Ltd. | Reagent injection apparatus and method of producing the same |
| US8298187B2 (en) | 2009-07-07 | 2012-10-30 | Cook Medical Technologies Llc | Fluid injection device |
| WO2012165303A1 (en) * | 2011-05-27 | 2012-12-06 | オリンパスメディカルシステムズ株式会社 | Puncture needle for ultrasound |
| CN103379872A (en) * | 2011-05-27 | 2013-10-30 | 奥林巴斯医疗株式会社 | Puncture needle for ultrasound |
| US8657749B2 (en) | 2011-05-27 | 2014-02-25 | Olympus Medical Systems Corp. | Ultrasonic puncture needle |
| US9616204B2 (en) | 2012-03-02 | 2017-04-11 | Cook Medical Technologies LLC. | Dilation cap for endoluminal device |
| WO2013168498A1 (en) * | 2012-05-10 | 2013-11-14 | オリンパスメディカルシステムズ株式会社 | Treatment tool for endoscope |
| CN114533213A (en) * | 2020-11-24 | 2022-05-27 | 奥林巴斯株式会社 | Treatment method and device with ultrasound endoscope |
| CN114533213B (en) * | 2020-11-24 | 2024-05-24 | 奥林巴斯株式会社 | Treatment method and device with ultrasonic endoscope |
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