JPH1015062A - Syringe for endoscope - Google Patents

Syringe for endoscope

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Publication number
JPH1015062A
JPH1015062A JP17878296A JP17878296A JPH1015062A JP H1015062 A JPH1015062 A JP H1015062A JP 17878296 A JP17878296 A JP 17878296A JP 17878296 A JP17878296 A JP 17878296A JP H1015062 A JPH1015062 A JP H1015062A
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JP
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Patent type
Prior art keywords
tube
endoscope
needle
liquid
liquid supply
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
Application number
JP17878296A
Other languages
Japanese (ja)
Inventor
Teruo Ouchi
輝雄 大内
Original Assignee
Asahi Optical Co Ltd
旭光学工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
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Abstract

PROBLEM TO BE SOLVED: To eliminate any hard part at the section of injection needle and to prevent the damage to any other built-in article when passing through the treatment instrument inserting channel of an endoscope by providing an armour tube, synthetic resin liquid feeding tube, needle part of which the top end side is cut, and liquid injection port provided on the side of base end. SOLUTION: When a liquid feeding tube 12 is inserted through the treatment instrument inserting channel of the endoscope in case of use, at the bent part of the endoscope or the like, this tube is passed through the section bent at a small curvature radius. Since a needle part 13 is made of synthetic resin having flexibility and elasticity, there is no hard part, the hard part of a syringe 10 for endoscope is only the section of a top end chip 21 and the tube is smoothly passed without providing the state of stretching even at the bent part. Therefore, the bundle of optical fibers or the other built-in article arranged adjacently to the treatment instrument inserting channel is not damaged and the tube can be smoothly passed. When the top end of the needle part 13 is protruded from the endoscope, the celom inner wall is punched and medicinal liquid is injected from the syringe connected to a liquid injection port 15 through the liquid feeding tube 12.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【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チャンネルを介して患者の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 The present invention, through the treatment instrument insertion channel of an endoscope relating to an endoscopic injection device for injection into a body cavity of a patient.

【0002】 [0002]

【従来の技術】内視鏡用注射具は一般に、可撓性のある合成樹脂製のチューブ又は密着巻きコイル等からなる外套管内に送液チューブを進退自在に挿通して、その送液チューブの先端に金属製の注射針を接続してある。 BACKGROUND ART endoscopic injection instrument is generally flexible and is made of synthetic resin tube or the tightly wound liquid supply tube to jacket tube consisting of a coil or the like is inserted retractably, the liquid supply tube It is connected a metallic injection needle tip.

【0003】そして、手元側からの操作によって送液チューブを外套管内で進退させることにより、外套管の先端から注射針が出し入れされる(特公平3−2276 [0003] By advancing and retracting the liquid feed tube in the mantle tube by manipulation of the proximal side, the needle is out from the tip of the mantle tube (KOKOKU 3-2276
号、実公平6−39721号)。 No., real fairness No. 6-39721).

【0004】 [0004]

【発明が解決しようとする課題】注射具を内視鏡の処置具挿通チャンネル内に挿通する際には、注射針は、処置具挿通チャンネルに刺さらないように、外套管内に引っ込めておき、注射具の先端が処置具挿通チャンネルを通過してから、注射針を外套管から押し出すようにしている。 When inserted through the endoscope treatment instrument insertion channel of the injection device [0005] The injection needle, so as not sasara the treatment instrument insertion channel, leave retracted mantle tube, injection after the tip of the tool passes through the treatment instrument insertion channel, and an injection needle so as to push out from the mantle tube.

【0005】しかし、金属製の注射針は曲がりにくくて長い硬質部を形成する。 However, the metal needle to form a long rigid portion hardly bend. そのため、例えば図4に示されるように、注射具10を内視鏡1の処置具挿通チャンネル2に通す際に、内視鏡の湾曲部3のように小さな曲率半径で曲げられる部分で硬質部Aが真っ直ぐに突っ張って、併存する光学繊維束4など他の内蔵物を損傷してしまう場合がある。 Therefore, for example, as shown in FIG. 4, when passing the injection device 10 in the treatment instrument insertion channel 2 of the endoscope 1, the rigid portion is bendable portion with a small radius of curvature as the curved portion 3 of the endoscope a is taut straight, in some cases damage the other built-in components such as optical fiber bundle 4 to coexist.

【0006】そこで本発明は、注射針部分に硬質部ができず、内視鏡の処置具挿通チャンネルに通す際に他の内蔵物を損傷しない内視鏡用注射具を提供することを目的とする。 [0006] The present invention aims to provide an injection can not hard portion to the needle portion, an endoscopic injection device that does not damage the other built-in during passage through the treatment instrument insertion channel of an endoscope to.

【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、本発明の内視鏡用注射具は、密着巻きコイルパイプからなる外套管と、上記外套管内に進退自在に挿通された可撓性と弾力性のある合成樹脂製チューブからなる送液チューブと、上記送液チューブの先端を切り削いで形成された針部と、上記送液チューブ内に液体を送り込むために上記送液チューブの基端側に設けられた液体注入口とを設けたことを特徴とする。 To achieve the above object, according to an aspect of endoscopic injection instrument of the present invention, the outer tube made of tightly wound coil pipe, movably inserted through a flexible above mantle tube a liquid supply tube consisting of sex and resilient synthetic resin tube, a needle portion that is formed by skived off the tip of the liquid supply tube, the liquid supply tube to feed a liquid into said liquid supply tube characterized in that a liquid inlet provided on the proximal side.

【0008】なお、上記針部が、上記送液チューブの先端部分を細く絞ってその先端を斜めに切り削いで形成されていてもよい。 [0008] Incidentally, the needle may be formed by skived off the tip obliquely finely focused tip portion of the liquid supply tube. また、上記外套管に対する上記針部のストロークに比べて、上記外套管に対する上記送液チューブの手元側部分のストロークの方が長くとられていてもよい。 Further, as compared with the stroke of the needle with respect to the outer tube, it may be taken longer towards the stroke of the proximal portion of the liquid supply tube relative to the outer tube.

【0009】 [0009]

【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。 Referring to DETAILED DESCRIPTION OF THE INVENTION The drawings will be described embodiments of the present invention. 図1は内視鏡用注射具10を示しており、この注射具10は、図3に示されるように、内視鏡の処置具挿通チャンネル2内に挿通して使用される。 Figure 1 shows an endoscopic injection device 10, the injection device 10, as shown in FIG. 3, it is used by inserting the endoscope treatment instrument insertion channel 2.

【0010】図1に示されるように、注射具10の最外層は、ステンレス鋼線を均一の径でコイル状に密着巻きして形成された密着巻きコイルパイプからなる外套管1 [0010] As shown in FIG. 1, the outermost layer of the injection device 10, the mantle tube 1 made of tightly wound coil pipe formed by tightly wound into a coil of stainless steel wire with a uniform diameter
1によって形成されている。 It is formed by one. この外套管11は、軸線方向に圧着力を加える所謂プレロードをかけて密着巻きされており、軸線の直線保持力に優れている。 The mantle tube 11 is tightly wound over the so-called preload applying compression force in the axial direction, and excellent linearity holding force in the axial.

【0011】外套管11内には、可撓性と弾力性のある合成樹脂製チューブからなる送液チューブ12が進退自在に挿通されている。 [0011] In the mantle tube 11, the liquid supply tube 12 made of a synthetic resin tube with a flexible and resilient is inserted retractably. そして、送液チューブ12の先端部分は細径に絞って形成され、その先端が斜めに切り削がれて針部13が形成されている。 Then, the tip portion of the liquid supply tube 12 is formed by squeezing a small diameter, the tip is scraped off cut obliquely needle portion 13 is formed.

【0012】このように、針部13を送液チューブ12 [0012] Thus, the liquid supply tube 12 of the needle portion 13
より細く形成することにより、体腔内壁に対する穿刺深さが針部13部分だけに規制されるので、穿刺深さをほぼ希望通りにすることができる。 By narrower form, the lancing depth to inner wall of the body cavity is restricted by the needle portion 13 portion can be made substantially as desired puncture depth. なお、針部13の長さと太さは必要に応じて設定すればよい。 The length and thickness of the needle portion 13 may be set as needed.

【0013】送液チューブ12を形成する材料としては、例えばナイロン(硬度:ロックウェルR106〜1 [0013] As a material for forming a liquid supply tube 12, for example, nylon (Hardness: Rockwell R106~1
20)、ポリプロピレン(硬度:ロックウェルR80〜 20), polypropylene (hardness: Rockwell R80~
110)、ポリイミド樹脂(硬度:ロックウェルR12 110), polyimide resin (hardness: Rockwell R12
9)等を用いることができる。 9) or the like can be used. ただし、必要に応じて、 However, if necessary,
さらに硬い材料又は軟らかい材料を用いてもよい。 It may be used further hard material or soft material.

【0014】送液チューブ12の基端に接続された内筒14の他端側には、注射器等が接続可能な液体注入口金15が形成されている。 [0014] the other end of the inner cylinder 14 connected to the proximal end of the liquid supply tube 12, syringe or the like liquid injection mouthpiece 15 which can be connected is formed. この内筒14は、外套管11の基端に接続された外筒16内で軸方向に進退自在である。 The inner tube 14 is movable back and forth axially within the outer cylinder 16 connected to the proximal end of the mantle tube 11.

【0015】そして、外筒16の内周側に装着されたO [0015] Then, O attached to the inner peripheral side of the outer cylinder 16
リング17が、内筒14の外周面の2か所に形成されたクリック溝18,19のいずれかに係合することにより、内外両筒14,16間の相対的な位置決めが行われる。 Ring 17, by engaging in any of the click groove 18, 19 formed in two places of the outer peripheral surface of the inner cylinder 14, the relative positioning between the inner and outer cylinder 14, 16 is performed.

【0016】図1は、Oリング17が第1のクリック溝18に係合していて、針部13が外套管11内に収納された状態を示しており、処置具挿通チャンネル2への挿脱はこの状態で行われる。 [0016] Figure 1, O-ring 17 is engaged with the first click groove 18, it shows a state in which the needle portion 13 is housed in the mantle tube 11, inserted into the treatment instrument insertion channel 2 de-is performed in this state.

【0017】図2は、Oリング17が第2のクリック溝19に係合していて、針部13が外套管11の先端から所定の長さだけ突出した状態を示しており、患部への注射はこの状態で行われる。 [0017] Figure 2, O-ring 17 is engaged with the second click groove 19, it shows a state in which the needle portion 13 is protruded from the distal end of the mantle tube 11 by a predetermined length, into the affected injection is performed in this state.

【0018】外套管11の先端には、金属製の先端チップ21が固着されている。 [0018] distal end of the mantle tube 11 is made of metal tip 21 is fixed. 先端チップ21の先端には針部13が緩く挿通される孔22が穿設されていて、その孔22の裏側は後方に向かいゆるやかに広がったテーパ面に形成されている。 The distal end of the distal tip 21 a hole 22 which the needle portion 13 is loosely inserted are drilled, the back side of the hole 22 is formed in a tapered surface spread gently towards the rear.

【0019】孔22の内径は、送液チューブ12の外径より細く形成されている。 The inner diameter of the bore 22 is narrower than the outer diameter of the liquid supply tube 12. したがって、図2に示されるように送液チューブ12を前方に押し出すと、孔22のすぐ背後のテーパ面に送液チューブ12の針部13の基部が当接してストッパになる。 Therefore, when extruding a liquid supply tube 12 to the front as shown in FIG. 2, the base of the needle portion 13 of the liquid supply tube 12 to the tapered surface of the underlying short hole 22 is the stopper abuts.

【0020】この実施の形態においては、そのときの針部13部分のストロークL1に対して、内管14のストローク(即ち、二つのクリック溝18,19間の距離) [0020] In this embodiment, with respect to the stroke L1 of the needle 13 portion of that time, the stroke of the inner tube 14 (i.e., the distance between the two click groove 18, 19)
L2の方を少し長くとってある。 Towards the L2 it is taking a little longer.

【0021】したがって、内視鏡用注射具10が屈曲したような状態でも、針部13の基部が先端チップ21に当接するまで送液チューブ12を押し出して、常に一定の長さだけ針部13を突き出すことができるだけでなく、針部13を患部に突き刺す際に、送液チューブ12 [0021] Thus, in the endoscopic injection instrument 10 state as bending, the base of the needle portion 13 is extruded a liquid supply tube 12 until it abuts against the distal tip 21, only a constant and long needle unit 13 not only can shove, when piercing the needle portion 13 to the affected area, liquid supply tube 12
が圧縮されにくいので、針部13の突出状態が維持される。 There therefore difficult to compress, protruded state of the needle portion 13 is maintained.

【0022】このように形成された内視鏡用注射具10 The endoscopic injection instrument thus formed 10
は、使用時には図3に示されるように内視鏡の処置具挿通チャンネル2に挿通されて、内視鏡の湾曲部等では小さな曲率半径で曲げられた部分を通る。 It is inserted through the treatment instrument insertion channel 2 of the endoscope as in use shown in FIG. 3, the endoscope bending portion or the like of the through bent portions with a small radius of curvature.

【0023】しかし、針部13は可撓性と弾力性のある合成樹脂製なので硬質部を形成しない。 [0023] However, the needle portion 13 do not form a rigid unit since synthetic resin having flexibility and elasticity. したがって、内視鏡用注射具10の硬質部Aは短い先端チップ21部分だけであり、湾曲部においても処置具挿通チャンネル2 Thus, the hard portion A of the endoscopic injection instrument 10 is only a short tip 21 portions, treated also in the bending section instrument insertion channel 2
内で突っ張る状態にならず、処置具挿通チャンネル2に隣接して配置されている光学繊維束(図示せず)など他の内蔵物を損傷することなく、処置具挿通チャンネル2 Not in a state of thrusting the inner optical fiber bundle being disposed adjacent to the treatment instrument insertion channel 2 (not shown) such as without damaging the other built-in, the treatment instrument insertion channel 2
内をスムーズに通過することができる。 It can pass through the inner smoothly.

【0024】内視鏡用注射具10の先端が内視鏡から突出されると、密着巻きコイルパイプで形成された内視鏡用注射具10は直線保持性がよいので、目標とする患部に向けて真っ直ぐに突き出すことができ、患部を正確に狙撃することができる。 [0024] When the distal end of the endoscopic injection instrument 10 is projected from the endoscope, since the tightly wound coil endoscopic injection instrument 10 formed in the pipe has good linearity retention, to the affected area of ​​the target can protrude straight towards, it is possible to snipe accurately the affected area.

【0025】そして、針部13を体腔内壁に穿刺して、 [0025] Then, the needle portion 13 pierces the body cavity inner wall,
手元側の液体注入口金15に接続された注射器20から薬液を送り出せば、その薬液が送液チューブ12を通って体腔内壁に注射される。 If Okuridase the chemical from the syringe 20 connected to liquid injection mouthpiece 15 on the hand side, the chemical liquid is injected into the body cavity inner wall through the liquid supply tube 12.

【0026】 [0026]

【発明の効果】本発明によれば、可撓性と弾力性のある合成樹脂製チューブからなる送液チューブの先端を切り削いで針部を形成したことにより、注射針部分に硬質部ができないので、他の内蔵物を損傷することなく内視鏡の処置具挿通チャンネルに挿通することができる。 According to the present invention, by forming the needle is skived off the tip of the liquid supply tube made of a synthetic resin tube with a flexible and resilient, can not hard portion to the needle portion so it can be inserted into the treatment instrument insertion channel of an endoscope without damaging the other built-in components.

【0027】また、密着巻きコイルパイプで外套管を形成したことにより、直線保持性がよいので、目標とする患部を正確に狙撃して注射することができる。 Further, by forming the outer tube in tightly wound coil pipe, since good linearity retention, it can be injected by sniper accurately affected area a target.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の実施の形態の内視鏡用注射具の針が引っ込められた状態の側面断面図である。 1 is a side sectional view of a state where the needle endoscopic injection instrument is retracted in the embodiment of the present invention.

【図2】本発明の実施の形態の内視鏡用注射具の針が突き出された状態の側面断面図である。 2 is a side sectional view of a state where the needle endoscopic injection instrument is protruded in the form of embodiment of the present invention.

【図3】本発明の実施の形態の内視鏡用注射具が内視鏡の処置具挿通チャンネルを通過する状態の部分断面図である。 3 is a partial cross-sectional view of a state in which the form of an endoscope for injection instrument is passed through the treatment instrument insertion channel of an endoscope of the present invention.

【図4】従来の内視鏡用注射具が内視鏡の処置具挿通チャンネルを通過する状態の部分断面図である。 4 is a partial cross-sectional view of a conventional endoscopic injection instrument is passed through the treatment instrument insertion channel of an endoscope state.

【符号の説明】 DESCRIPTION OF SYMBOLS

10 内視鏡用注射具 11 外套管 12 送液チューブ 13 針部 15 注体注入口 10 endoscope for injection instrument 11 mantle tube 12 the liquid supply tube 13 needle portion 15 Chukarada inlet

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】密着巻きコイルパイプからなる外套管と、 上記外套管内に進退自在に挿通された可撓性と弾力性のある合成樹脂製チューブからなる送液チューブと、 上記送液チューブの先端を切り削いで形成された針部と、 上記送液チューブ内に液体を送り込むために上記送液チューブの基端側に設けられた液体注入口とを設けたことを特徴とする内視鏡用注射具。 And outer tube consisting of 1. A tightly wound coil pipe, and the liquid supply tube comprising a movably inserted through a flexible and resilient synthetic resin tube into the mantle tube, the distal end of the liquid supply tube a needle portion that is formed by cutting skived and endoscopic characterized in that a liquid inlet provided on the base end side of the liquid supply tube to feed a liquid into said liquid supply tube injection tool.
  2. 【請求項2】上記針部が、上記送液チューブの先端部分を細く絞ってその先端を斜めに切り削いで形成されている請求項1記載の内視鏡用注射具。 Wherein said needle part, endoscopic injection device according to claim 1, wherein are formed by skived off the tip obliquely finely focused tip portion of the liquid supply tube.
  3. 【請求項3】上記外套管に対する上記針部のストロークに比べて、上記外套管に対する上記送液チューブの手元側部分のストロークの方が長くとられている請求項1又は2記載の内視鏡用注射具。 3. Compared to the stroke of the needle relative to the cannula, the endoscope of the feeding tube proximal portion of the stroke towards long taken to have claim 1 or 2, wherein for the mantle tube use injection device.
JP17878296A 1996-07-09 1996-07-09 Syringe for endoscope Pending JPH1015062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17878296A JPH1015062A (en) 1996-07-09 1996-07-09 Syringe for endoscope

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
JP17878296A JPH1015062A (en) 1996-07-09 1996-07-09 Syringe for endoscope
US08835234 US5964740A (en) 1996-07-09 1997-04-07 Treatment accessory for an endoscope
DE1997634740 DE69734740D1 (en) 1996-07-09 1997-04-23 Injection apparatus for an endoscope
DE1997614153 DE69714153T2 (en) 1996-07-09 1997-04-23 The injector instrument for an endoscope
EP20010117388 EP1155708B1 (en) 1996-07-09 1997-04-23 Injector instrument for an endoscope
DE1997634740 DE69734740T2 (en) 1996-07-09 1997-04-23 Injection apparatus for an endoscope
EP19970106755 EP0818208B1 (en) 1996-07-09 1997-04-23 Injector instrument for an endoscope
DE1997614153 DE69714153D1 (en) 1996-07-09 1997-04-23 The injector instrument for an endoscope
DK97106755T DK0818208T3 (en) 1996-07-09 1997-04-23 Injecting instrument for an endoscope
DK01117388T DK1155708T3 (en) 1996-07-09 1997-04-23 Injecting instrument for an endoscope
US09369346 US6203533B1 (en) 1995-06-07 1999-08-06 Treatment accessory for an endoscope
US09369353 US6210378B1 (en) 1996-07-09 1999-08-06 Treatment accessory for an endoscope
US09369351 US6210377B1 (en) 1996-07-09 1999-08-06 Treatment accessory for an endoscope

Publications (1)

Publication Number Publication Date
JPH1015062A true true JPH1015062A (en) 1998-01-20

Family

ID=16054548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17878296A Pending JPH1015062A (en) 1996-07-09 1996-07-09 Syringe for endoscope

Country Status (1)

Country Link
JP (1) JPH1015062A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004528122A (en) * 2001-05-18 2004-09-16 ユナイテッド ステイツ エンドスコピー グループ,インコーポレイテッド Duodenum mirror needle
WO2006067917A1 (en) 2004-12-21 2006-06-29 Olympus Corporation Puncture needle of endoscope
JP2014113417A (en) * 2012-12-12 2014-06-26 Olympus Medical Systems Corp Tube body structure and method for assembling the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004528122A (en) * 2001-05-18 2004-09-16 ユナイテッド ステイツ エンドスコピー グループ,インコーポレイテッド Duodenum mirror needle
US7727197B2 (en) 2001-05-18 2010-06-01 United States Endoscopy Group, Inc. Duodenoscope needle
WO2006067917A1 (en) 2004-12-21 2006-06-29 Olympus Corporation Puncture needle of endoscope
EP1829490A1 (en) * 2004-12-21 2007-09-05 Olympus Corporation Puncture needle of endoscope
EP1829490A4 (en) * 2004-12-21 2010-05-05 Olympus Corp Puncture needle of endoscope
US8608701B2 (en) 2004-12-21 2013-12-17 Olympus Corporation Puncture needle for endoscope
JP2014113417A (en) * 2012-12-12 2014-06-26 Olympus Medical Systems Corp Tube body structure and method for assembling the same

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