JP2003088494A - Flexibility varying device for flexible tube part of endoscope - Google Patents

Flexibility varying device for flexible tube part of endoscope

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Publication number
JP2003088494A
JP2003088494A JP2001284597A JP2001284597A JP2003088494A JP 2003088494 A JP2003088494 A JP 2003088494A JP 2001284597 A JP2001284597 A JP 2001284597A JP 2001284597 A JP2001284597 A JP 2001284597A JP 2003088494 A JP2003088494 A JP 2003088494A
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Japan
Prior art keywords
flexible
endoscope
flexible tube
tube portion
treatment instrument
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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
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JP2001284597A
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Japanese (ja)
Inventor
Masaru Takeshige
勝 竹重
Original Assignee
Pentax Corp
ペンタックス株式会社
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Publication date
Application filed by Pentax Corp, ペンタックス株式会社 filed Critical Pentax Corp
Priority to JP2001284597A priority Critical patent/JP2003088494A/en
Publication of JP2003088494A publication Critical patent/JP2003088494A/en
Application status is Pending legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00071Insertion part of the endoscope body
    • A61B1/00078Insertion part of the endoscope body with stiffening means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00131Accessories for endoscopes
    • A61B1/00137End pieces, e.g. caps, seals, forceps plugs

Abstract

PROBLEM TO BE SOLVED: To provide a flexibility varying device for a flexible tube part of an endoscope in which an endoscope operator can easily adjust the flexibility of the flexible tube part by simple structure and an insertion matter for treatment such as a treatment instrument, water, liquid chemical, etc., can be inserted to the inside of the endoscope without detaching a flexural rigidity adjusting tool. SOLUTION: In the endoscope having a channel for inserting the treatment instrument inside of the flexible tube part and having a treatment tool insertion port communicated to this cannel for inserting the treatment instrument on the side of an operation part to be connected with this flexible tube part, the flexural rigidity adjusting tool which can be inserted and pulled out to/from the inside of the channel via the treatment instrument insertion port and which can vary the flexural rigidity of itself is provided as a member separate from the endoscope, and an insertion hole piercing the inside of the flexural rigidity adjusting tool through full length of it for inserting the insertion matter for treatment is formed for the flexibility varying device of the flexible tube part of the endoscope.

Description

【発明の詳細な説明】 【0001】 【技術分野】本発明は、内視鏡の可撓管部の可撓性を変化させる可撓性可変装置に関する。 BACKGROUND OF THE INVENTION [0001] TECHNICAL FIELD The present invention relates to a flexible variable device for varying the flexibility of the flexible tube of the endoscope. 【0002】 【従来技術及びその問題点】医療用や工業用の内視鏡は、屈曲した経路の観察対象内へ挿入可能にするべく挿入部に可撓性を有する可撓管部を設けているが、さらに挿入作業性を良くするために、この可撓管部の可撓性(曲げ硬度)を可変とさせるタイプの内視鏡が提案されている。 [0002] BACKGROUND OF THE INVENTION medical endoscope and industrial are provided with a flexible tube portion having flexibility in the insertion portion so as to allow insertion into the tortuous path of the observation target in the It is, but in order to improve further insertion workability, an endoscope of a type that the flexibility (bending hardness) variable of the flexible tube portion has been proposed. このタイプの内視鏡は、例えば、大腸への挿入時においてS字結腸部分を通すときは可撓管部を硬化させ、S字結腸の通過後に可撓管部を軟化させるといった態様で使用される。 The endoscope of this type are, for example, when passing the S-shaped colon portion during insertion into the large intestine is to cure the flexible tube portion, is used in a manner such softening the flexible tube portion after passing through the S-shaped colon that. 【0003】可撓管部の可撓性を変化させるための手段としては、例えば、直線筒状のコイルが軸線方向への伸縮によって曲げ剛性(軸線直交方向への硬度)を変化させるという特性を利用したものが知られている。 [0003] As a means for varying the flexibility of the flexible tube portion, for example, the property of changing linearity cylindrical coil bent by the expansion and contraction in the axial direction stiffness (hardness in the axial orthogonal direction) those that use is known. すなわち、この種のコイルは、圧縮すれば曲がりにくくなり、 That is, this type of coil is not easily bend when compressed,
伸ばせば曲がりやすくなるので、該コイルを外部から伸縮操作可能な状態で可撓管内に設けることで、可撓管部の可撓性を可変にすることができる。 Since easily bend if reach out, by providing a flexible tube of the coil stretchable operable state from the outside, it can be a flexible of the flexible tube portion to the variable. コイルを伸縮操作するための手段としては、該コイルの中心部にワイヤを挿通させてコイル先端部付近に固定し、このワイヤを外部からの操作によって牽引、弛緩させる構造が知られている。 It means for extending and contracting operation of the coil, by inserting the wire in the center of the coil is fixed near the coil tip, pulled by manipulation of the wire from the outside, there is known the structure to relax. すなわち、ワイヤを牽引すればコイルが圧縮され、ワイヤを弛緩させればコイルの圧縮が解除されて自由状態に戻る。 That is, if the traction wires are coil compression, if relaxing the wires are coil compression is released to return to the free state. 【0004】ところで、従来の可撓性可変タイプの内視鏡では、可撓性調整用のコイルを操作するための操作部が内視鏡から離れて位置するものがあった。 [0004] In the endoscope of a conventional flexible variable type, there is one operating portion for operating the coil for flexible adjustment is located away from the endoscope. こうした可撓性可変装置では、内視鏡の使用時に内視鏡操作者が自ら可撓管部の可撓性を調整することができず、可撓性調整のための補助者を必要としていた。 In such flexible variable device, an endoscope operator during use of the endoscope can not be adjusted flexibility of their flexible tube portion, it has required the assistant for flexible adjustment . 【0005】そこで本出願人は、内視鏡の処置具挿入口突起の処置具挿入口から可撓管部内に可撓性調整用のコイルを内蔵する曲げ剛性調整具を挿入して、この曲げ剛性調整具に設けられた可撓性調整操作環を内視鏡作業者が回転操作することにより、上記コイルの圧縮とその解除を行えるようにした発明を完成し、既に特許出願している(特願平2001-137692号)。 [0005] The present applicant inserts the flexural rigidity adjuster incorporating a coil for flexible adjustment to the flexible tube portion from the treatment instrument insertion opening of the treatment instrument insertion opening protrusion of the endoscope, the bending by the flexible adjustment operation ring provided in rigidity adjusting device is an endoscope operator rotates the operation, and completed the invention so as to perform compression and release thereof in the coil, has already filed a patent application ( Japanese Patent Application No. 2001-137692). 【0006】しかし、この内視鏡ではさらに、曲げ剛性調整具を処置具挿入口に挿入している際に、処置具挿入口に鉗子や高周波焼灼処置具等の処置具を挿入したり、 However, this endoscope in addition, when you have inserted the flexural rigidity adjustment tool in the treatment instrument insertion port, insert a treatment tool such as forceps or a high frequency cautery treatment instrument in the treatment instrument insertion port,
処置具挿入口から内視鏡の内部に水や液状の薬品等を入れることを可能にすることが望まれている。 It is desired to enable placing the endoscope inside the water or liquid chemicals, etc. from the instrument inlet. 【0007】 【発明の目的】本発明は、簡単な構造で、内視鏡操作者が容易に可撓管部の可撓性を調整できるとともに、曲げ剛性調整具を内視鏡から取り外すことなく、内視鏡の内部に、処置具や水、液状の薬品等の処置用挿入物を入れることができるようにした内視鏡の可撓管部の可撓性可変装置を提供することを目的とする。 [0007] SUMMARY OF THE INVENTION The present invention is a simple structure, with the endoscope operator can adjust easily the flexible tube portion flexible, without removing the flexural rigidity adjuster from the endoscope , aims to provide the interior of the endoscope treatment instrument and water, the flexible variable device of the flexible tube portion of the endoscope to be able to put the surgery insert of chemicals such liquid to. 【0008】 【発明の概要】本発明は、可撓管部内に処置具挿通用管路を有し、この可撓管部に接続される操作部側に、この処置具挿通用管路に連通する処置具挿入口を有する内視鏡において、上記内視鏡とは別部材として、上記処置具挿入口を介して処置具挿通用管路内に挿脱可能で、自身の曲げ剛性を変化させることができる曲げ剛性調整具を設け、この曲げ剛性調整具に、該曲げ剛性調整具の内部を全長にわたって貫通する、処置用挿入物を通すための挿入孔を形成したことを特徴としている。 SUMMARY OF THE INVENTION The present invention has a treatment instrument insertion conduit into the flexible tube portion, the operation portion side connected to the flexible tube section, communicating with the treatment instrument insertion duct in an endoscope having a treatment instrument insertion port which, as a separate member from the above endoscope, a removably to the treatment tool through the insertion opening treatment instrument insertion duct, changing its flexural rigidity it flexural rigidity adjuster provided can, in this flexural rigidity adjuster, through the entire length of the inside of the bending rigidity adjusting device is characterized in that the formation of the insertion hole for inserting the procedure for inserts. 【0009】上記曲げ剛性調整具に、自由状態で直線状をなし軸線方向への伸縮により曲げ剛性を変化させる、 [0009] the flexural rigidity adjuster, to vary the bending stiffness by the expansion and contraction in the axial direction forms a linear shape in a free state,
上記処置具挿入口を介して処置具挿通用管路に対し挿脱可能な曲げ剛性可変体と、この曲げ剛性可変体の基部に設けられ、該曲げ剛性可変体を伸縮させて曲げ剛性を変化させるための操作機構部と、上記曲げ剛性可変体を処置具挿通用管路に挿入した状態で上記操作機構部を上記処置具挿入口に対し着脱可能とする曲げ剛性調整具着脱機構とを設けるのが好ましい。 Change flexural and rigidity changing member that detachably to treatment instrument insertion duct via the treatment instrument insertion port, provided at the base of the bending rigidity varying member, the bending stiffness by stretching the flexural rigidity changing body the operating mechanism providing the flexural rigidity adjuster detaching mechanism is detachably mountable to the instrument inlet while the operation mechanism unit, inserted above bending rigidity variable member in the treatment instrument insertion duct for causing preference is. 【0010】上記曲げ剛性可変体をコイル体とし、少なくとも一部が上記コイル体の中心部に挿入され、両端が開口する筒状をなすとともに、先端部が上記コイル体の先端部にコイル体を伸縮可能な態様で係合し、かつ少なくとも上記コイル体に挿入された部分が可撓性を有する材料から形成された、内部に処置用挿入物を通すことができる筒状牽引部材を設け、上記操作機構部が、上記筒状牽引部材を上記コイル体に対して軸線方向に相対移動させることにより上記コイル体を伸縮させるのが好ましい。 [0010] The flexural rigidity changing body and the coil body, at least a portion is inserted into the central portion of the coil body, with both ends forms a cylindrical shape opening, tip the coil body to the distal end portion of the coil body engaged in telescopic manner, and at least the inserted portion to the coil body is formed from a flexible material, the tubular traction member which can be passed through the procedural insert therein provided, the operation mechanism unit, for scaling the coil body by relatively moving in the axial direction the tubular traction member with respect to the coil body is preferred. 【0011】また、上記コイル体の外周面を、可撓性材料からなる筒状のシースで覆うのが好ましい。 Further, the outer peripheral surface of the coil body, that covered with a tubular sheath made of a flexible material preferably. 【0012】上記内視鏡の処置具挿入口突起が、上記処置具挿入口を有し、該処置具挿入口の内面を、処置具挿入口突起の突出端部方向に進むにつれて徐々に内径サイズを大きくする円錐状のテーパ内周面とした内面テーパ筒状部と、該内面テーパ筒状部の外面から径方向に突出するフランジ突起とを有し、上記曲げ剛性調整具に設けた曲げ剛性調整具着脱機構が、上記操作機構部に設けた、先端側に進むにつれて徐々に外径サイズを小さくする円錐状のテーパ外周面を有する外面テーパ突起と、該外面テーパ突起を囲む筒状囲繞壁の内周面に形成した、 [0012] instrument inlet protrusion of the endoscope, has the treatment instrument insertion port, inner diameter gradually size as the inner surface of the treatment instrument insertion port, the process proceeds to the projecting end direction of the treatment instrument insertion opening projection and a large inner surface tapered tube portion which is a conical tapered inner peripheral surface, and a flange projection which projects from the outer surface of the inner surface tapered tube portion in a radial direction, the bending is provided to the flexural rigidity adjuster stiffness adjuster detachable mechanism provided on the operation mechanism unit, gradually and an outer surface tapered projection having a conical tapered outer circumferential surface to reduce the outside diameter, cylindrical surrounding wall surrounding the outer surface tapered projections as it travels distally formed on the inner peripheral surface of,
上記フランジ突起が螺合可能な内面ねじ溝とを有し、上記フランジ突起を上記内面ねじ溝に螺合させることによって、上記外面テーパ突起が上記内面テーパ筒状部の処置具挿入口内に挿入されて上記テーパ外周面とテーパ内周面が密着し、操作機構部が処置具挿入口突起に固定されるようにすることができ、上記フランジ突起を、上記内面テーパ筒状部の径方向の対向位置に一対設け、上記内面ねじ溝を、該一対のフランジ突起が係合可能な二条ねじとすることができ、上記外面テーパ突起は、その先端部に、上記曲げ剛性可変体の端部が嵌まる凹部を有しているのが好ましい。 The flange projection and a screwable internally threaded grooves, the flange projection by screwing in the inner surface a thread groove, the outer surface tapered projection is inserted into the treatment instrument insertion mouth of the inner surface tapered tube portion Te close contact the tapered outer peripheral surface and the tapered inner surface, the operation mechanism section can be made to be fixed to the instrument inlet protrusions, the flange projection, facing in the radial direction of the inner surface tapered tube portion provided in pairs in the position, the inner surface a thread groove, the pair of flanges projections can be made engageable with double thread, the outer surface taper protrusions, at its distal end, the end portion of the bending stiffness variable body fitting whole preferably has a recess. また、上記外面テーパ突起に、上記曲げ剛性可変体と上記筒状牽引部材が挿通可能な貫通孔を形成することができる。 Further, in the outer surface tapered protrusion, the flexural rigidity changing body and the tubular traction member can be formed can be inserted through holes. 【0013】上記曲げ剛性調整具の操作機構部は、正逆方向の回動操作によって、上記曲げ剛性調整具着脱機構を介して該操作機構部を上記処置具挿入口突起に対して固定または取り外しさせる着脱操作環と、該着脱操作環と略共通の回動中心による正逆方向の回動操作によって、上記曲げ剛性可変体を硬化または軟化させる可撓性調整操作環とを備えているものとすることができる。 [0013] The operation mechanism of the bending stiffness adjuster is fixed or removable by the forward and reverse directions of the rotational operation, the the manipulation mechanism via the flexural rigidity adjuster detachable mechanism with respect to the instrument inlet projection a detachable operation ring to be, by forward and reverse direction of the rotational operation by the detachable operating ring substantially common rotation center, to that a flexible adjustment operation ring to cure or soften the flexural rigidity varying member can do. 上記着脱操作環による操作機構部の固定用の回動方向と、 And rotational direction of the fixing operation mechanism unit by the detaching operation ring,
上記可撓性調整操作環による曲げ剛性可変体の硬化用の回動方向は同じであるのが好ましく、さらに、上記着脱操作環の内周面に上記内面ねじ溝を形成することができる。 Is preferably a rotational direction is the same for curing the variable stiffness member bent by the flexible adjustment operation ring, furthermore, it is possible to form the internally threaded grooves on the inner peripheral surface of the detachable operation ring. 【0014】 【発明の実施の形態】図1ないし図7を参照して、本発明による内視鏡の可撓性可変装置の第1の実施形態を説明する。 [0014] With reference to FIGS PREFERRED EMBODIMENTS, illustrating a first embodiment of a flexible device for changing an endoscope according to the present invention. 図1に示す電子内視鏡10は医療用の内視鏡であり、体腔内に挿入される挿入部11とその基部側に接続された操作部12を有している。 Electronic endoscope 10 shown in FIG. 1 is a medical endoscope has an insertion portion 11 and operation portion 12 connected at its base side to be inserted into a body cavity. 挿入部11は、先端側から順に先端部13、湾曲部14及び可撓管部15を有しており、さらに可撓管部15が連結部16を介して操作部12に接続している。 The insertion portion 11, the tip portion 13 from the distal end side in order, has a curved portion 14 and the flexible tube 15, further flexible tube 15 is connected to the operation portion 12 via the coupling portion 16. 【0015】先端部13は、硬性部材からなる先端部本体(不図示)を有し、この先端部本体に、対物レンズ保持孔、配光レンズ保持孔、送気送水チャンネル出口、処置具挿通チャンネル出口18(図2)等が形成されている。 The tip 13 has a distal end portion main body (not shown) made of rigid members, in the distal end portion main body, an objective lens holding hole, the light distributing lens holding hole, air and water supply channel outlet, the treatment instrument insertion channel outlet 18 (FIG. 2) or the like is formed. 対物レンズ保持孔と配光レンズ保持孔には、結像用の対物レンズと照明用の配光レンズが保持されている。 The objective lens holding hole and the light distribution lens holding hole, the light distributing lens for illumination and objective lens for image formation is held. 【0016】湾曲部14内には、軸線と直交する軸を中心に相対回動可能に連結された複数の節輪(湾曲駒) [0016] In the bending portion 14, a plurality of which are linked to relatively rotate about the axis perpendicular to the axis joint rings (bending pieces)
が、その軸線方向に並べて設けられている。 There are provided side by side in the axial direction. 操作部12 The operation unit 12
に設けた湾曲操作ノブ20A、20Bを回動操作することによって、不図示の複数の湾曲操作ワイヤが牽引または弛緩されて、複数の節輪を相対回動させる。 Bending operation knob 20A provided on by turning operation of 20B, plural bending operation wires (not shown) is pulled or relaxed, thereby relatively rotating the plurality of node rings. すると、 Then,
湾曲部14が湾曲される。 The bending portion 14 is bent. 具体的には、湾曲操作ノブ2 Specifically, the bending operation knob 2
0Aを正逆方向に回動操作すると、一対の湾曲操作ワイヤを介して湾曲部14が左右方向に湾曲し、湾曲操作ノブ20Bを正逆方向に回動操作すると、別の一対の湾曲操作ワイヤを介して湾曲部14は上下方向に湾曲する。 When rotation operation to 0A in forward and reverse directions, a curved bending portion 14 in the left-right direction through a pair of bending operation wires, when operated to rotate the bending operation knob 20B in forward and reverse directions, another pair of bending operation wires the bending portion 14 via a is curved in the vertical direction.
さらに、湾曲部14の湾曲状態は、ロックノブ21Aやロックレバー21Bを操作することによって固定させることが可能である。 Further, the bending state of the bending portion 14 can be fixed by operating the knob 21A and the locking lever 21B. 【0017】操作部12からはユニバーサルチューブ2 [0017] Universal tube 2 from the operation unit 12
5が延出しており、該ユニバーサルチューブ25の端部には、不図示のプロセッサに接続するコネクタ部26が設けられている。 5 are extended, the end of the universal tube 25, the connector portion 26 to be connected to a processor (not shown) is provided. コネクタ部26には、不図示の信号伝送用ケーブルやライトガイドの端部、送気チューブや送水チューブの入口部等が設けられており、コネクタ部2 The connector portion 26, the end of the signal transmission cable and a light guide (not shown), the inlet section or the like of the air supply tube and the water supply tube is provided, the connector portion 2
6をプロセッサに接続することによって、これらの各部は、プロセッサ側の画像処理装置、光源及び送気送水源に接続される。 By connecting the 6 to the processor, these units are the image processing apparatus of the processor side, is connected to the light source and the air and water supply source. 【0018】先端部13内には、対物レンズの背後にC [0018] In the tip 13, C behind the objective lens
CDが設けられており、対物レンズから該CCDの受光面に入った観察対象の像は光電変換され、CCDからユニバーサルチューブ25のコネクタ部26まで配設された前述の信号伝送用ケーブルを介して、電子画像としてプロセッサに送られる。 CD is provided, an image of the observation object that enters from the objective lens to the light receiving surface of the CCD is photoelectrically converted, via the aforementioned signal transmission cable which is disposed from the CCD to the connector 26 of the universal tubing 25 and sent to the processor as an electronic image. プロセッサでは、電子画像をモニタに表示したり画像記録媒体に記録することができる。 The processor may be recorded in the image recording medium or to display an electronic image on the monitor. 操作部12には、画像処理関連の遠隔操作を行うための複数のリモート操作ボタンスイッチ27が設けられている。 The operation unit 12, a plurality of remote operation button switch 27 for performing the remote operation of the image processing-related are provided. また、配光レンズには、ユニバーサルチューブ25のコネクタ部26から先端部13まで配設された前述のライトガイドを介して、プロセッサに設けた光源からの照明光が与えられる。 Further, the light distribution lens through the above-described light guide disposed to the distal end 13 from the connector portion 26 of the universal tube 25, the illumination light from the light source provided in the processor is given. 【0019】操作部12には、リモート操作ボタンスイッチ27の近傍位置に送気送水ボタン28が設けられており、送気送水ボタン28を押圧すると、プロセッサ側の送気源または送水源から前述の送気チューブや送水チューブに送り込まれた空気や液体が、先端部13の送気送水チャンネル出口から噴射される。 [0019] The operation unit 12, air and water supply button 28 in the vicinity of the remote operation button switch 27 is provided, when pressing the air and water supply button 28, the air source or water source on the processor side of the above air supply tube and sent into the water supply tube air or liquid is injected from the air water channel outlet of the tip 13. 【0020】電子内視鏡10の連結部16には、鉗子や高周波焼灼処置具といった処置具挿入用の処置具挿入口突起30が設けられており、処置具挿入口突起30から内視鏡内方に向けて、処置具挿通硬性管31(図2)が延設されている。 [0020] the connecting portion 16 of the electronic endoscope 10, the forceps or instrument inlet projection 30 of the treatment instrument insertion such high frequency cautery treatment instrument is provided with, the treatment instrument insertion port projection 30 in the endoscope from toward towards, the treatment instrument insertion rigid tube 31 (FIG. 2) is extended. この処置具挿通硬性管31には処置具挿通軟性管32が接続しており、処置具挿通硬性管31 It connects the treatment instrument insertion soft pipe 32 to the treatment instrument insertion rigid tube 31, treatment device insertion rigid pipe 31
と処置具挿通軟性管32によって処置具挿通チャンネル(処置具挿通用管路)が構成されている。 Treatment tool insertion channel (treatment instrument insertion conduit) is constituted by a treatment instrument insertion soft tube 32 and. 処置具挿通軟性管32の先端部は、先端部13に形成した前述の処置具挿通チャンネル出口18に臨んでいる。 The distal end portion of the treatment instrument insertion soft tube 32 faces the treatment instrument insertion channel outlet 18 of the aforementioned formed in the tip 13. 図2に示すように、処置具挿通硬性管31は連結部16内に位置し、 As shown in FIG. 2, the treatment instrument insertion rigid tube 31 is located in the connecting portion 16,
処置具挿通軟性管32は、連結部16の一部と、可撓管部15と湾曲部14の全体を連通して配設されている。 Treatment instrument insertion soft pipe 32, a part of the connecting portion 16, is disposed in communication with the entire curved portion 14 and the flexible tube 15.
なお、処置具挿通チャンネルには、図示しない吸引チューブが接続しており、この吸引チューブは、電子内視鏡10の外部に設けた図示されない負圧源(吸引源)に接続されている。 Note that the treatment instrument insertion channel, connects the suction tube (not shown), the suction tube is connected to a negative pressure source (not shown) provided outside of the electronic endoscope 10 (suction source). 【0021】処置具挿通チャンネルに対しては、後述する曲げ剛性調整具40と処置具挿入口突起30を介して鉗子や高周波焼灼処置具等の処置具A(後述)を挿入することと、吸引チューブを介して負圧源から負圧をかけることが可能である。 [0021] For the treatment instrument insertion channel, and inserting the treatment instrument A, such as forceps or a high frequency cautery treatment instrument (described below) through the treatment instrument insertion port projection 30 and the bending stiffness adjuster 40 will be described later, suction it is possible to apply a negative pressure from the negative pressure source through the tube. 処置具挿通チャンネルを処置具A The treatment instrument A treatment instrument insertion channel
の挿通管路として使用する場合は、曲げ剛性調整具40 If you use as passage channel is flexural rigidity adjuster 40
と処置具挿入口突起30を介して挿入された処置具は、 Is inserted treatment instrument through the treatment instrument insertion port projection 30 and,
処置具挿通チャンネル出口18から突出される。 Protrude from the treatment instrument insertion channel outlet 18. 一方、 on the other hand,
処置具挿通チャンネルを吸引用の管路として使用するときには、操作部12に設けた吸引ボタン29を押圧する。 When using the treatment instrument insertion channel as a conduit for aspiration presses the suction button 29 provided on the operation unit 12. すると、負圧源側の管路と処置具挿通チャンネルが連通されて、負圧が処置具挿通チャンネルに作用し、処置具挿通チャンネル出口18から体液等の液体を吸引することができる。 Then, it is possible treatment instrument insertion channel and the negative pressure source side of the conduit is in communication with a negative pressure acts on the treatment instrument insertion channel, to suck the liquid such as body fluid from the treatment instrument insertion channel outlet 18. 【0022】前述のように、湾曲部14は湾曲操作ノブ20A、20Bの操作によって任意に曲げることができ、可撓管部15も可撓性を有しており、この可撓管部15と湾曲部14を連通する一連の処置具挿通軟性管3 [0022] As described above, the bending portion 14 bending operation knob 20A, can be bent arbitrarily by 20B operation, the flexible tube portion 15 also has flexibility, and the flexible tube 15 a series of treatment instrument insertion soft tube 3 for communicating the curved portion 14
2は、湾曲部14の湾曲操作や可撓管部15の変形に対応するように可撓性を有している。 2 is flexible to accommodate the deformation of the bending operation or the flexible tube 15 of the bending portion 14. 【0023】図3に示すように、処置具挿入口突起30 As shown in FIG. 3, the instrument inlet projection 30
にはルアー口金部(内面テーパ筒状部)35が設けられている。 Luer cap portion (inner surface tapered tube portion) 35 is provided in the. ルアー口金部35は処置具挿通硬性管31に連通する処置具挿入口34を有する筒状をなし、該処置具挿入口34の内面として、処置具挿入口突起30の突出端部方向(内視鏡外方)へ進むにつれて徐々に内径サイズを大きくするテーパ内周面36(図6)が形成されている。 Luer cap portion 35 forms a cylindrical shape having a treatment instrument insertion port 34 which communicates with the treatment instrument insertion rigid tube 31, as the inner surface of the treatment instrument insertion port 34, the projecting end direction of the treatment instrument insertion opening protrusion 30 (endoscopic tapered inner surface 36 that gradually increase the inner diameter size as one proceeds to Kagamigaikata) (FIG. 6) is formed. また、ルアー口金部35の先端付近の外周面には、径方向外方に向けて突出する一対のフランジ突起3 Further, the outer peripheral surface near the tip of the luer cap portion 35, a pair of flanges projection projecting radially outward 3
7が形成されている。 7 is formed. 一対のフランジ突起37は、ルアー口金部35の軸線を挟んだ径方向の対向位置に設けられている。 A pair of flanges projection 37 is provided at a position facing the sandwiched radially to the axis of the luer mouthpiece 35. 処置具挿入口突起30には、ルアー口金部3 The instrument inlet projection 30, the luer cap portion 3
5を着脱自在に覆うことができるとともに、スリット3 5 it is possible to a removable cover, the slit 3
8a(図7参照)が形成された、ゴム等の弾性材料からなる鉗子栓38が付属している。 8a (see FIG. 7) is formed, forceps plug 38 of resilient material such as rubber is attached. 【0024】ルアー口金部35には、可撓管部15の可撓性を変化させるための曲げ剛性調整具40を着脱可能である。 [0024] Luer mouthpiece 35 is detachable flexural rigidity adjuster 40 for changing the flexibility of the flexible tube 15. 曲げ剛性調整具40は、大きく分けて、処置具挿入口突起30の外側に位置する操作機構部41と、処置具挿通チャンネル(処置具挿通硬性管31及び処置具挿通軟性管32)に対して挿入される曲げ剛性可変コイル部42からなっている。 Flexural rigidity adjuster 40 is roughly an operation mechanism unit 41 located outside of the treatment instrument insertion opening protrusion 30, to the treatment instrument insertion channel (treatment instrument insertion rigid tube 31 and the treatment instrument insertion soft tube 32) consists flexural rigidity variable coil unit 42 is inserted. 【0025】図6に示すように、操作機構部41にはベース筒43が設けられ、このベース筒43には、外面テーパ突起44、細密雄ねじ45、筒状牽引部材移動空間46が形成されている。 As shown in FIG. 6, the operating mechanism unit 41 base cylinder 43 is provided on the base tube 43, an outer surface tapered projections 44, fine external thread 45, is formed with a tubular traction member moving space 46 there. 外面テーパ突起44の外周面は、外面テーパ突起44の先端側に進むにつれて徐々に外径サイズを小さくする円錐状のテーパ外周面47として形成されている。 The outer peripheral surface of the outer surface tapered projection 44 is formed as a conical tapered outer peripheral surface 47 which gradually reduce the outer diameter size as one proceeds distally of the outer surface tapered projection 44. 外面テーパ突起44の内部には貫通孔44aが形成されており、貫通孔44aの内周面にはコイル収納孔(凹部)48が形成されている。 Inside the outer surface tapered projection 44 has a through hole 44a is formed, on the inner peripheral surface of the through hole 44a is a coil housing hole (recess) 48 is formed. ベース筒43の外周に設けた細密雄ねじ45には、着脱操作環5 The fine external thread 45 provided on the outer circumference of the base tube 43, detaching operation ring 5
0の内周面に形成した細密雌ねじ49が螺合しており、 Fine internal thread 49 formed on the inner peripheral surface of the 0 are screwed,
この細密雌ねじ49と細密雄ねじ45の螺合関係によって、着脱操作環50をベース筒43に対して回転させることができる。 By screwing relationship between the fine internal thread 49 with fine external thread 45, it is possible to rotate the detaching operation ring 50 relative to the base tube 43. 細密ねじ45、49は、着脱操作環50 Fine thread 45, 49 is detachable operating ring 50
の回転に伴う着脱操作環50の軸線方向移動が小さくなるように、ねじの傾斜等が設定されている。 As the axial movement of the detachable operation ring 50 caused by the rotation of the decreases, the inclination or the like of the screw is set. 【0026】着脱操作環50にはさらに、外面テーパ突起44と略同心の筒状囲繞壁52が形成されており、筒状囲繞壁52の内面には、外面テーパ突起44のテーパ外周面47を囲む態様で、ルアー口金部35の一対のフランジ突起37が螺合可能な二条ねじ(内面ねじ溝)5 The detachable operation ring 50 further is formed an outer surface tapered projection 44 and the cylindrical surrounding wall 52 substantially concentrically on the inner surface of the cylindrical surrounding wall 52, the tapered outer circumferential surface 47 of the outer surface tapered projection 44 in a manner surrounding, double thread pair of flanges projection 37 of the luer cap 35 is threadably (inner thread groove) 5
3が形成されている。 3 is formed. この二条ねじ53を含む筒状囲繞壁52と外面テーパ突起44は、処置具挿入口突起30 Cylindrical surrounding wall 52 and an outer surface tapered projection 44 including the double thread 53, the treatment instrument insertion port projection 30
のルアー口金部35に対して着脱可能なルアー口金受け部(曲げ剛性調整具着脱機構)54を構成している。 It constitutes a removable luer cap receiving portion (flexural rigidity adjuster detaching mechanism) 54 with respect to the luer mouthpiece 35. 【0027】ベース筒43の外面テーパ突起44と反対側の端部には、着脱操作環50と略同心をなす筒状の可撓性調整操作環55が、回転自在かつベース筒43の長手方向に移動不能として取り付けられている。 [0027] At the end of the outer surface tapered protrusion 44 of the base cylinder 43 opposite, detachable operating ring 50 and the tubular flexible adjustment operating ring 55 having a substantially concentric longitudinal rotatably and base cylinder 43 It is attached as immovable in. 可撓性調整操作環55の内周面には雌ねじ56が形成されており、この雌ねじ56には、筒状牽引部材移動空間46と可撓性調整操作環55の内側に配設された硬質筒状牽引部材57の外周面に形成された雄ねじ58が螺合している。 The inner peripheral surface of the flexible adjustment operation ring 55 is internally threaded 56 is formed on the female screw 56, is arranged a tubular traction member movement space 46 inside the flexible adjustment operating ring 55 rigid male thread 58 formed on the outer peripheral surface of the cylindrical pulling member 57 is screwed. 硬質筒状牽引部材57の基端部は可撓性調整操作環55の外側に突出しており、硬質筒状牽引部材57の外周面に形成された硬質筒状牽引部材57の長手方向を向く溝59には、ベース筒43の内周面に突設された回り止め片60が係合している。 Proximal end of the rigid tubular traction member 57 protrudes to the outside of the flexible adjustment operating ring 55, a groove facing the longitudinal direction of the rigid tubular traction member 57 formed on the outer circumferential surface of the rigid tubular traction member 57 59, the detent piece 60 protruding from the inner peripheral surface of the base cylinder 43 are engaged. 【0028】硬質筒状牽引部材57の先端部には、硬質筒状牽引部材57よりも長く、かつフッ素樹脂等の可撓性のある材料からなる軟質筒状牽引部材61の基端部が固着されている。 [0028] the distal end of the rigid tubular traction member 57 is longer than the rigid tubular traction member 57, and base end portion of the flexible tubular traction member 61 made of flexible material such as a fluorine resin is fixed It is. 軟質筒状牽引部材61の基部を除く部分は、外面テーパ突起44に形成された貫通孔44aを通ってベース筒43の外側に突出しており、その先端部には環状フランジ62が形成されている。 Portion excluding the base of the soft tubular traction member 61 protrudes to the outside of the base tube 43 through the through hole 44a formed in the outer surface tapered projection 44, annular flange 62 is formed at its distal end . 硬質筒状牽引部材57と軟質筒状牽引部材61の内部は、後述する処置具Aや水、液状の薬品等の処置用挿入物を入れるための挿入孔57a、61aとなっており、上記の硬質筒状牽引部材57と軟質筒状牽引部材61により、筒状牽引部材63が構成されている。 Internal hard tubular traction member 57 and a soft tubular traction member 61, the insertion hole 57a for inserting a treatment for insert of Chemicals of the treatment instrument A, water, liquid that will be described later, has a 61a, of the the rigid tubular traction member 57 and a soft tubular traction member 61, the tubular traction member 63 is constructed. 【0029】軟質筒状牽引部材61の基端部を除く部分の外周面は、曲げ剛性可変コイル部42を構成するコイル(曲げ剛性可変体、コイル体)64により覆われている。 The outer peripheral surface of the part excluding the base end portion of the flexible tubular traction member 61 is a coil constituting the flexural rigidity variable coil portion 42 is covered by (bending rigidity variable member, the coil body) 64. コイル64は、自由状態で直線状をなす筒状コイルであり、その軸線方向に伸縮可能である。 Coil 64 is a tubular coil forming a straight shape in a free state, is extendable in the axial direction. コイル64の基端部はコイル収納孔48に収納され、その端面がコイル収納孔48の底面に当接しており、コイル64の先端部は環状フランジ62に当接している。 The proximal end portion of the coil 64 is housed in the coil housing hole 48, the end face is in contact with the bottom surface of the coil housing hole 48, the tip portion of the coil 64 is in contact with the annular flange 62. 【0030】以上の曲げ剛性調整具40の着脱及び使用の態様を説明する。 [0030] describe aspects of the above bending removable and use of rigid adjuster 40. 曲げ剛性調整具40を処置具挿入口突起30に対して装着する際には、図3のように処置具挿入口34から鉗子栓38を取り外した状態で、処置具挿入口34内に曲げ剛性可変コイル部42を挿入する。 When attached to the bending instrument inlet projection 30 a rigidity adjusting device 40, in a state where the treatment instrument insertion port 34 is removed forceps plug 38 as shown in FIG. 3, flexural rigidity in the instrument inlet 34 inserting a variable coil unit 42.
ルアー口金部35の開口は処置具挿通硬性管31に通じており、処置具挿通硬性管31は処置具挿通軟性管32 The opening of the luer mouthpiece 35 and through the treatment instrument insertion rigid tube 31, treatment device insertion rigid pipe 31 treatment instrument insertion soft tube 32
に通じているため、挿入を続けると、曲げ剛性可変コイル部42が、処置具挿通軟性管32内まで挿入される。 Since leads to, continuing the insertion, bending rigidity variable coil unit 42 is inserted to inside the treatment instrument insertion soft tube 32.
曲げ剛性可変コイル部42が挿入されると、曲げ剛性調整具40の操作機構部41を構成するルアー口金受け部54(外面テーパ突起44、筒状囲繞壁52及び二条ねじ53)が、処置具挿入口突起30のルアー口金部35 Bending the rigidity variable coil unit 42 is inserted, the luer cap receiving portion 54 constituting the operation mechanism portion 41 of the flexural rigidity adjuster 40 (the outer surface tapered projection 44, cylindrical surrounding wall 52 and the double thread 53), the treatment instrument luer cap portion 35 of the insertion slot projection 30
に接近する。 Approach to. 【0031】ここで、ルアー口金部35の一対のフランジ突起37を二条ねじ53にねじ込ませる方向に着脱操作環50を回転させる。 [0031] Here, rotating the detachable operating ring 50 in the direction in which threaded a pair of flanges projection 37 of the luer base part 35 in double thread 53. すると、一対のフランジ突起3 Then, a pair of flanges projection 3
7が二条ねじ53に螺合して案内され、ルアー口金受け部54がルアー口金部35へ接近する方向に移動する。 7 is guided screwed into the double thread 53, the luer cap receiving portion 54 is moved toward the luer mouthpiece 35.
その結果、ルアー口金受け部54側の外面テーパ突起4 As a result, the outer surface tapered projection of the luer cap receiving portion 54 side 4
4がルアー口金部35の処置具挿入口34内に挿入され、そのテーパ外周面47がルアー口金部35のテーパ内周面36に押し付けられて両テーパ面が密着する。 4 is inserted into the treatment instrument insertion port 34 of the luer cap portion 35, the tapered outer circumferential surface 47 is both tapered surfaces pressed against the tapered inner surface 36 of the luer mouthpiece 35 are in close contact. つまり、一対のフランジ突起37を二条ねじ53に螺合させることによって、ルアー口金部35に対してルアー口金受け部54が圧入状態で結合され、図4に示すように、内視鏡10に対して曲げ剛性調整具40が装着される。 That is, by screwing a pair of flanges projection 37 in double thread 53, the luer cap receiving portion 54 relative to the luer cap portion 35 is bonded in a press-fit state, as shown in FIG. 4, with respect to the endoscope 10 rigidity adjusting device 40 bending Te is attached. このように曲げ剛性調整具40をルアー口金部35 Thus bending luer cap portion 35 a rigidity adjusting device 40
に装着したら、図7に示すように、曲げ剛性調整具40 Once mounted, as shown in FIG. 7, the flexural rigidity adjuster 40
の硬質筒状牽引部材57の開口端部57bに鉗子栓38 Forceps plug 38 to the open end 57b of the rigid tubular traction member 57
を装着する。 The mounting. 曲げ剛性調整具40を取り外す際には、着脱操作環50を装着時と反対方向に回転させればよい。 When removing the flexural rigidity adjuster 40 may be rotated a detachable operating ring 50 in the opposite direction as when mounted.
すると、ルアー口金部35とルアー口金受け部54は二条ねじ53と一対のフランジ突起37に従って互いの離間方向に案内され、テーパ内周面36とテーパ外周面4 Then, the luer cap portion 35 and the luer cap receiving portion 54 is guided to each other detaching direction according double thread 53 and a pair of flanges projection 37, the tapered inner circumferential surface 36 and the tapered outer circumferential surface 4
7の密着状態が解除される。 7 state of adhesion is released. 【0032】図2に示すように、曲げ剛性調整具40を装着した状態では、処置具挿通軟性管32に挿入された曲げ剛性可変コイル部42は、その先端部が可撓管部1 As shown in FIG. 2, in a state of mounting the flexural rigidity adjuster 40, the rigid variable coil portion 42 bent, which is inserted into the treatment instrument insertion soft pipe 32, the tip flexible tube section 1
5の先端部付近(湾曲部14の近傍)に位置している。 It is located near the 5 tip portion (the vicinity of the curved portion 14).
ここで、可撓性調整操作環55を回動させることによって、可撓管部15の可撓性を変化させることが可能である。 Here, by rotating the flexible adjustment operation ring 55, it is possible to vary the flexibility of the flexible tube 15. 具体的には、次のような態様で可撓管部15の可撓性が変化する。 Specifically, flexibility of the flexible tube 15 is changed in the following manner. 【0033】可撓性調整操作環55が回動すると、溝5 [0033] When the flexible adjustment operation ring 55 is rotated, the groove 5
9と回り止め片60によって軸線回りの回転が禁止されている硬質筒状牽引部材57がベース筒43の長手方向に移動し、筒状牽引部材63全体がベース筒43の長手方向に移動する。 9 and the rigid tubular traction member 57 about the axis rotation is inhibited by the detent piece 60 is moved in the longitudinal direction of the base tube 43, the entire tubular traction member 63 is moved in the longitudinal direction of the base tube 43. 筒状牽引部材63が移動するとコイル64が伸縮する。 Coil 64 expands and contracts when the tubular traction member 63 is moved. 例えば、図6中の右方向に筒状牽引部材63が移動すると、環状フランジ62とコイル収納孔48の距離が短くなりコイル64が圧縮され、左方向に筒状牽引部材63が移動すると、環状フランジ62とコイル収納孔48の距離が長くなりコイル64が伸びる。 For example, if the tubular traction member 63 moves rightward in FIG. 6, the annular flange 62 and the coil 64 the distance is shortened coil housing hole 48 is compressed, the tubular traction member 63 leftward moves, cyclic distance of the flange 62 and the coil housing hole 48 is the coil 64 is extended longer.
コイル64は、圧縮されると曲がりにくく(硬く)なり、伸ばされると(圧縮を解除すると)曲がりやすく(柔らかく)なる特性を有しているため、圧縮されたコイル64は、自由状態に比して曲げ剛性が増して曲がりにくくなる。 Coil 64 is hardly bent to be compressed becomes (hard), because it has extended it is when (when decompressing) bend easily (soft) consisting characteristics, the coil 64 is compressed, compared to the free state bending Te rigidity is less likely to bend increases. よって、コイル64を内部に位置させている可撓管部15の曲げ硬度も増す。 Therefore, increasing the bending hardness of the flexible tube portion 15 which is positioned a coil 64 therein. コイル64の曲げ剛性、すなわち可撓管部15の硬化の程度は、可撓性調整操作環55の回動操作量によって調整することができる。 Bending stiffness, i.e. the degree of cure of the flexible tube portion 15 of the coil 64 can be adjusted by the rotation operation amount of the flexible adjustment operating ring 55. なお、曲げ剛性可変コイル部42は、湾曲部14内までは達していないため、可撓管部15の可撓性が変化しても湾曲部14の硬さ、すなわち湾曲操作性には影響しない。 Incidentally, the bending rigidity changing coil section 42, because it does not extend to the inside curved portion 14, the flexible hardness of the bending portion 14 is also changed in the flexible tube 15, i.e. does not affect the bending operability . 【0034】可撓管部15の硬化状態を解除して軟化させるには、硬化操作時と逆方向に可撓性調整操作環55 [0034] In order to soften and release the cured state of the flexible tube portion 15, a flexible adjustment operation in a direction opposite curing operation ring 55
を回動させる。 A is rotated. すると、コイル64の先端部に対する圧縮方向への力が解除または減少されるので、その分だけコイル64が伸びて曲げ剛性が低下する。 Then, since the force in the compressing direction with respect to the distal end portion of the coil 64 is released or reduced, that much coil 64 extends bending stiffness is reduced. コイル64が自由状態になるまで可撓性調整操作環55を操作すると、可撓管部15は最も柔軟になる。 Operating the flexible adjustment operating ring 55 until the coil 64 is free state, the flexible tube portion 15 is the most flexible. 【0035】以上のように、本実施形態の電子内視鏡1 [0035] As described above, the electronic endoscope of the embodiment 1
0では、図7に示すように、鉗子栓38のスリット38 In 0, as shown in FIG. 7, the slit 38 of the forceps plug 38
aを通じて、筒状牽引部材63の内部に処置具Aを挿入することができるので、曲げ剛性調整具40を処置具挿入口突起30に装着したままの状態で、処置具Aを筒状牽引部材63の挿入孔57a、61a、処置具挿通硬性管31、処置具挿通軟性管32を介して処置具挿通チャンネル出口18から先端部13の外側に突出させて、患部の処置を行うことができる。 Through a, it is possible to insert a treatment instrument A into the cylindrical pulling member 63, the bending stiffness adjuster 40 in a state attached to the instrument inlet projection 30, the tubular traction member treatment instrument A 63 of the insertion hole 57a, 61a, and protrudes outwardly of the tip portion 13 from the treatment instrument insertion rigid tube 31, the treatment instrument insertion soft tube 32 the treatment instrument insertion channel outlet 18 through, it is possible to perform the treatment of the diseased. また、硬質筒状牽引部材57の開口端部57bから鉗子栓38を取り外した後、 Further, after removal of the forceps plug 38 from the open end portion 57b of the rigid tubular traction member 57,
処置具挿入口突起30に装着された曲げ剛性調整具40 Flexural rigidity adjuster 40 attached to the instrument inlet projection 30
の筒状牽引部材63の挿入孔57a、61aに、内部に水や液状の薬品等が充填された注射器(図示略)を挿入して、この注射器を操作することにより水や液状の薬品等を処置具挿通硬性管31、処置具挿通軟性管32に流し、処置具挿通チャンネル出口18から患部に塗布することもできる。 Insertion hole 57a of the tubular traction member 63, to 61a, by inserting a syringe of water and liquid chemicals, etc. are filled in the (not shown), chemicals and the like of water or liquid form by operating the syringe treatment instrument insertion rigid pipe 31, flows into the treatment instrument insertion soft tube 32, can be applied to the affected area from the treatment instrument insertion channel outlet 18. 【0036】また、可撓管部15の可撓性を調整するための曲げ剛性調整具40を、処置具挿入口突起30に対して装着することで可撓性可変状態になるので、鉗子等の処置具Aを扱う場合と同様に、内視鏡の操作者が単独で可撓性の調整を行うことが可能であり、操作性が良い。 Further, the flexural rigidity adjuster 40 for adjusting the flexibility of the flexible tube 15, since the flexible variable state by attaching to the treatment instrument insertion port projections 30, forceps of as if dealing with the treatment instrument a, it is possible the operator of the endoscope to perform flexible adjustment alone, good operability. さらに、曲げ剛性調整具40は内視鏡10とは別部材であるため、可撓性調整用の複雑な機構を新規に内視鏡内に配設する必要がなく、構造が簡略で汎用性が高い。 Furthermore, the bending rigidity adjuster 40 is a member separate from the endoscope 10, a complicated mechanism for flexible adjustment it is not necessary to provide the endoscope a new, versatile structure is simplified It is high. 特に、本実施形態の曲げ剛性調整具40は、処置具挿入口突起30に処置具着脱用の口金構造を備えたタイプの内視鏡に対しては、内視鏡側に特別な改造や変更を加えることなく装着することができる。 In particular, the flexural rigidity adjuster 40 of the present embodiment, with respect to the endoscope of the type comprising a cap structure of the treatment instrument for detachable from the instrument inlet projection 30, special modifications or changes to the endoscope it can mounted to without adding. 【0037】なお、曲げ剛性調整具40では、着脱操作環50と可撓性調整操作環55は略共通の回動中心で回動可能であるが、可撓性調整操作環55による可撓管部15の硬化用の回動操作方向と、前述した着脱操作環5 [0037] In the bending stiffness adjuster 40, although removable operation ring 50 and the flexible adjustment operation ring 55 is rotatable in a substantially common center of rotation, the flexible tube by a flexible adjustment operating ring 55 a rotational operation direction for the curing of the parts 15, detachably operation ring 5 described above
0による曲げ剛性調整具40の装着用の回動操作方向が同じになるように設定されている。 Rotational operation direction for the mounting of rigidity adjusting device 40 bending by 0 are set to be the same. すなわち、図4において着脱操作環50をA方向に回動させたときに、前述したルアー口金の結合(ルアーロック)が生じる場合には、可撓性調整操作環55の同A方向の回動ではコイルの圧縮が生じるように、操作機構部41内のねじ方向等が設定されている。 That is, the detachable operating ring 50 when rotated in the A direction in FIG. 4, when the coupling of Luer cap described above (Luer lock) occurs, in the same direction A of the flexible adjustment operating ring 55 rotates in such compression of the coil occurs, the screw direction and the like in the operation mechanism unit 41 is set. このように、各操作環50、55における曲げ剛性調整具40の装着操作方向と可撓管部1 Thus, the mounting operation direction and the flexible tube portion 1 of the rigidity adjusting device 40 bending in each operation ring 50, 55
5の硬化操作方向を同じにすることで、硬化操作時にルアーロックが緩んでしまうおそれがなくなり、好ましい。 The curing operation direction 5 by the same, there is no possibility that loose luer lock during curing operations preferred. もちろん、着脱操作環50のB方向への回動で曲げ剛性調整具40が固定されるようにし、可撓性調整操作環55の同B方向の回動でコイル64が硬化されるようにしてもよい。 Of course, the stiffness adjuster 40 bent in the rotation of the B direction of the detachable operation ring 50 is fixed, in the same direction B of the rotation of the flexible adjustment operating ring 55 as the coil 64 is cured it may be. 【0038】次に本発明の第2の実施形態について、図8を参照しながら説明する。 [0038] Next, a second embodiment of the present invention will be described with reference to FIG. なお、第1の実施形態と同じ部材には、同じ符号を付すに止めて、その詳細な説明は省略する。 Note that the same members as the first embodiment, stop the given the same reference numerals, and detailed description thereof will be omitted. 【0039】本実施形態では、コイル64の外側を可撓性材料からなる筒状のシース70で覆い、シース70の両端部を、テーパ外周面47と環状フランジ62に形成した環状段部71とに被せ、密着させている。 [0039] In this embodiment, covered with a tubular sheath 70 comprising the outside of the coil 64 from a flexible material, the two ends of the sheath 70, an annular stepped portion 71 formed on the tapered outer peripheral surface 47 and the annular flange 62 the cover, and brought into close contact. 【0040】このようにすると、曲げ剛性可変コイル部42を処置具挿通硬性管31と処置具挿通軟性管32に挿入しても、処置具挿通硬性管31と処置具挿通軟性管32の内部にある体液等の汚物がコイル64の隙間に付着しないので、曲げ剛性調整具40の洗浄作業が容易になる。 [0040] Thus, inserting the flexural rigidity variable coil section 42 the treatment instrument insertion rigid pipe 31 and the treatment instrument insertion soft tube 32, inside the treatment instrument insertion soft tube 32 and treatment device insertion rigid pipe 31 since filth is body fluid does not adhere to the gaps of the coil 64, the cleaning operation of the bending stiffness adjuster 40 is facilitated. 【0041】以上、本発明の内視鏡の可撓性可変装置を説明したが、本発明は上記の実施形態に限定されるものではない。 [0041] Having described the flexible variable device of the endoscope of the present invention, the present invention is not limited to the above embodiment. 例えば、上記の実施形態では、曲げ剛性調整具40の曲げ剛性可変コイル部42は、吸引用と処置具挿通用の兼用管路に挿入されるものとしたが、処置具挿入用の機能のみを備える管路や副送水チャンネル等の管路に対して曲げ剛性可変コイル部42を挿入してもよい。 For example, in the above embodiments, the bending rigidity changing coil portion 42 of the flexural rigidity adjuster 40 has been assumed to be inserted into combined conduit for treatment instrument insertion and suction, only the function of the treatment instrument insertion rigid variable coil portion 42 bent with respect to the conduit and the conduit, such as auxiliary water channel with may be inserted. 【0042】さらに、曲げ剛性調整具40を処置具挿入口突起30から取り外した状態で、処置具挿入口突起3 [0042] Further, in a state where the bending stiffness adjuster 40 is removed from the treatment instrument insertion opening protrusion 30, the treatment instrument insertion port projection 3
0から処置具Aや液状の薬品等を処置具挿通チャンネルに入れることも勿論可能である。 It is from 0 add to the treatment instrument insertion channel of chemicals or the like of the treatment instrument A and the liquid is also possible. 【0043】 【発明の効果】本発明によれば、簡単な構造で、内視鏡操作者が容易に可撓管部の可撓性を調整できるとともに、曲げ剛性調整具を内視鏡から取り外すことなく、挿入孔を介して内視鏡の内部に処置用挿入物を入れることができる。 [0043] According to the present invention, a simple structure, with the endoscope operator can adjust easily the flexible tube portion flexible, detached from the endoscope bending stiffness adjuster it not, it is possible to put a treatment for inserts into the interior of the endoscope through the insertion hole.

【図面の簡単な説明】 【図1】本発明の第1の実施形態の内視鏡システムを構成する内視鏡の全体図である。 It is an overall view of an endoscope constituting the endoscope system of the first embodiment of the BRIEF DESCRIPTION OF THE DRAWINGS [Figure 1] present invention. 【図2】同じく、図1の内視鏡内部の処置具挿通用管路の概略を示す図である。 [Figure 2] Similarly, a diagram showing a schematic of the endoscope inside the treatment instrument insertion conduit of FIG. 【図3】同じく、図1の内視鏡の処置具挿入口突起付近の拡大図である。 [3] Also, an enlarged view of the vicinity of the treatment instrument insertion opening protrusion of the endoscope of FIG. 【図4】同じく、図1の内視鏡に、本発明を適用した曲げ剛性調整具を装着した状態の外観図である。 [4] Also, in the endoscope of FIG. 1 is an external view of a state in which the flexural rigidity adjuster according to the present invention is mounted. 【図5】同じく、曲げ剛性調整具の全体外観図である。 [5] Also, an overall external view of bending stiffness adjuster. 【図6】同じく、内視鏡側の処置具挿入口突起付近と曲げ剛性調整具の断面図である。 [6] Also, a cross-sectional view of the endoscope side of the treatment instrument insertion opening protrusion near the bending stiffness adjuster. 【図7】同じく、曲げ剛性調整具に処置具を挿入した状態を示す断面図である。 [7] Also, a cross-sectional view showing a state of inserting the treatment instrument bending stiffness adjuster. 【図8】本発明の第2の実施形態の曲げ剛性調整具の断面図である。 8 is a bent cross-sectional view of the rigidity adjusting device of the second embodiment of the present invention. 【符号の説明】 10 電子内視鏡11 挿入部12 操作部13 先端部14 湾曲部15 可撓管部16 連結部18 処置具挿通チャンネル出口20A 20B 湾曲操作ノブ21A ロックノブ21B ロックレバー25 ユニバーサルチューブ26 コネクタ部27 リモート操作ボタンスイッチ28 送気送水ボタン29 吸引ボタン30 処置具挿入口突起31 処置具挿通硬性管(処置具挿通用管路) 32 処置具挿通軟性管(処置具挿通用管路) 34 処置具挿入口35 ルアー口金部(内面テーパ筒状部) 36 テーパ内周面37 フランジ突起38 鉗子栓38a スリット40 曲げ剛性調整具41 操作機構部42 曲げ剛性可変コイル部43 ベース筒44 外面テーパ突起44a 貫通孔45 細密雄ねじ46 筒状牽引部材移動空間47 テーパ外周面48 [Reference Numerals] 10 electronic endoscope 11 insertion portion 12 operating portion 13 distal portion 14 connecting portion 18 treatment curve 15 the flexible tube portion 16 instrument insertion channel outlet 20A 20B bending operation knob 21A knob 21B lock lever 25 Universal tube 26 connector 27 remote operation button switch 28 air water button 29 suction button 30 instrument inlet projection 31 treatment instrument insertion rigid tube (treatment instrument insertion conduit) 32 treatment instrument insertion flexible tube (treatment instrument insertion conduit) 34 instrument inlet 35 luer mouthpiece (inner tapered tube portion) 36 tapered inner surface 37 a flange projection 38 forceps plug 38a slit 40 flexural rigidity adjusting device 41 operating mechanism 42 flexural rigidity variable coil unit 43 based tube 44 outer surface tapered projection 44a through holes 45 fine external thread 46 tubular traction member moving space 47 tapered outer circumferential surface 48 コイル収納孔(凹部) 49 細密雌ねじ50 着脱操作環52 筒状囲繞壁53 二条ねじ(内面ねじ溝) 54 ルアー口金受け部(曲げ剛性調整具着脱機構) 55 可撓性調整操作環56 雌ねじ57 硬質筒状牽引部材57a 挿入孔57b 開口端部58 雄ねじ59 溝60 回り止め片61 軟質筒状牽引部材61a 挿入孔62 環状フランジ63 筒状牽引部材64 コイル(曲げ剛性可変体、コイル体) 70 シース71 環状段部A 処置具(処置用挿入物) Coil housing hole (recess) 49 minute internal thread 50 detachably operation ring 52 cylindrical surrounding wall 53 double thread (inner thread groove) 54 Luer cap receiving portion (flexural rigidity adjuster detaching mechanism) 55 flexible adjustment operating ring 56 internal thread 57 rigid tubular traction member 57a insertion hole 57b opening end 58 the male screw 59 a groove 60 anti-rotation piece 61 soft tubular traction member 61a insertion hole 62 annular flange 63 tubular traction member 64 coil (flexural rigidity changing body, the coil body) 70 sheath 71 annular step A treatment instrument (medical treatment insert)

Claims (1)

  1. 【特許請求の範囲】 【請求項1】 可撓管部内に処置具挿通用管路を有し、 [Claims 1, further comprising a treatment instrument insertion conduit into the flexible tube portion,
    この可撓管部に接続される操作部側に、この処置具挿通用管路に連通する処置具挿入口を有する内視鏡において、 上記内視鏡とは別部材として、上記処置具挿入口を介して処置具挿通用管路内に挿脱可能で、自身の曲げ剛性を変化させることができる曲げ剛性調整具を設け、 この曲げ剛性調整具に、該曲げ剛性調整具の内部を全長にわたって貫通する、処置用挿入物を通すための挿入孔を形成したことを特徴とする内視鏡の可撓管部の可撓性可変装置。 The operation unit side that is connected to the flexible tube portion, in an endoscope having a treatment instrument insertion port communicating with the treatment instrument insertion duct, as a separate member from the above endoscope, the treatment instrument insertion port be inserted into and removed from the treatment instrument insertion duct via the bending stiffness adjuster provided can be changed its flexural rigidity, this flexural rigidity adjuster, over the entire length of the inside of the bending stiffness adjuster through which the flexible variable device of the flexible tube portion of an endoscope, characterized in that the formation of the insertion hole for inserting the procedure for inserts. 【請求項2】 請求項1記載の内視鏡の可撓管部の可撓性可変装置において、上記曲げ剛性調整具に、 自由状態で直線状をなし軸線方向への伸縮により曲げ剛性を変化させる、上記処置具挿入口を介して処置具挿通用管路に対し挿脱可能な曲げ剛性可変体と、 この曲げ剛性可変体の基部に設けられ、該曲げ剛性可変体を伸縮させて曲げ剛性を変化させるための操作機構部と、 上記曲げ剛性可変体を処置具挿通用管路に挿入した状態で上記操作機構部を上記処置具挿入口に対し着脱可能とする曲げ剛性調整具着脱機構と、 を設けたことを特徴とする内視鏡の可撓管部の可撓性可変装置。 2. A flexible variable device of the flexible tube portion of an endoscope according to claim 1, in the bending stiffness adjuster, change the bending stiffness by the expansion and contraction in the axial direction forms a linear shape in a free state let, flexural and rigidity changing member that detachably to the instrument inlet a treatment instrument insertion duct via, provided at the base of the bending rigidity varying member, bending stiffness by stretching the flexural rigidity changing body an operation mechanism unit for varying the said bend the operating mechanism in a state of being inserted into the treatment instrument insertion duct of the variable stiffness member bending detachable with respect to the instrument inlet stiffness adjuster detaching mechanism and the flexible variable device of the flexible tube portion of an endoscope, characterized in that a. 【請求項3】 請求項2記載の内視鏡の可撓管部の可撓性可変装置において、 上記曲げ剛性可変体をコイル体とし、 少なくとも一部が上記コイル体の中心部に挿入され、両端が開口する筒状をなすとともに、先端部が上記コイル体の先端部にコイル体を伸縮可能な態様で係合し、かつ少なくとも上記コイル体に挿入された部分が可撓性を有する材料から形成された、内部に処置用挿入物を通すことができる筒状牽引部材を設け、 上記操作機構部が、上記筒状牽引部材を上記コイル体に対して軸線方向に相対移動させることにより上記コイル体を伸縮させる内視鏡の可撓管部の可撓性可変装置。 3. A flexible variable device of the flexible tube portion of an endoscope according to claim 2, wherein the bending rigidity varying member is a coil body, at least a portion is inserted into the central portion of the coil body, together form a cylindrical shape both ends are open, of a material tip having engaged in telescopic manner a coil body to the distal end portion of the coil body, and the inserted portion to at least the coil member flexible formed, the tubular traction member which can be passed through the procedural insert therein provided, the coil by the operating mechanism causes the relative movement in the axial direction the tubular traction member with respect to the coil body flexible variable device of the flexible tube portion of the endoscope to stretch the body. 【請求項4】 請求項3記載の内視鏡の可撓管部の可撓性可変装置において、上記コイル体の外周面を、可撓性材料からなる筒状のシースで覆った内視鏡の可撓管部の可撓性可変装置。 4. A flexible variable device of the flexible tube portion of an endoscope according to claim 3, the outer peripheral surface of the coil body, covered endoscope in a cylindrical sheath made of flexible material flexible variable device of the flexible tube portion of the. 【請求項5】 請求項1ないし4のいずれか1項記載の内視鏡の可撓管部の可撓性可変装置において、 上記内視鏡の処置具挿入口突起が、 上記処置具挿入口を有し、該処置具挿入口の内面を、処置具挿入口突起の突出端部方向に進むにつれて徐々に内径サイズを大きくする円錐状のテーパ内周面とした内面テーパ筒状部と、 該内面テーパ筒状部の外面から径方向に突出するフランジ突起とを有し、 上記曲げ剛性調整具に設けた曲げ剛性調整具着脱機構が、 上記操作機構部に設けた、先端側に進むにつれて徐々に外径サイズを小さくする円錐状のテーパ外周面を有する外面テーパ突起と、 該外面テーパ突起を囲む筒状囲繞壁の内周面に形成した、上記フランジ突起が螺合可能な内面ねじ溝とを有し、 上記フランジ突起を上記内面ねじ溝に螺 5. The flexible variable device of the flexible tube portion of the endoscope according to any one of claims 1 to 4, the treatment instrument insertion port protrusion of the endoscope, the treatment instrument insertion port the a, an inner surface of the treatment instrument insertion port, and the inner surface tapered tube portion which gradually and conical tapered inner surface to increase the inner diameter size as one proceeds to the projecting end direction of the treatment instrument insertion port projections, said gradually as a flange projection which projects from the outer surface of the inner surface tapered tubular portion in the radial direction, the bending stiffness adjuster to provided the flexural rigidity adjuster detachable mechanism provided on the operation mechanism, advances distally outer and an outer surface tapered projection having a conical tapered outer peripheral surface diameter size smaller, formed on the inner peripheral surface of the cylindrical surrounding wall surrounding the outer surface tapered protrusion, the flange projections and possible internal threads groove screwed in It has, screw the flange projections on the inner surface of the screw groove させることによって、上記外面テーパ突起が上記内面テーパ筒状部の処置具挿入口内に挿入されて上記テーパ外周面とテーパ内周面が密着し、操作機構部が処置具挿入口突起に固定される内視鏡の可撓管部の可撓性可変装置。 By the above outer surface tapered protrusion is inserted into the treatment instrument insertion mouth of the inner surface tapered tube portion in close contact the tapered outer peripheral surface and the tapered inner surface, the operation mechanism is fixed to the instrument inlet projection flexible variable device of the flexible tube portion of the endoscope. 【請求項6】 請求項5記載の内視鏡の可撓管部の可撓性可変装置において、上記フランジ突起は、上記内面テーパ筒状部の径方向の対向位置に一対設けられ、 上記内面ねじ溝は、該一対のフランジ突起が係合可能な二条ねじからなる内視鏡の可撓管部の可撓性可変装置。 In flexible variable device of the flexible tube portion of 6. The endoscope according to claim 5, wherein the flange projection is provided in pairs on opposing positions in the radial direction of the inner surface tapered tube portion, the inner surface thread groove, the flexible variable device of the flexible tube portion of an endoscope in which the pair of flanges projecting consists engageable double thread. 【請求項7】 請求項5または6記載の内視鏡の可撓管部の可撓性可変装置において、上記外面テーパ突起は、 7. The flexible variable device of the flexible tube portion according to claim 5 or 6 endoscope, wherein said outer surface taper protrusions,
    その先端部に、上記曲げ剛性可変体の端部が嵌まる凹部を有している内視鏡の可撓管部の可撓性可変装置。 At its distal end, the flexible variable device of the flexible tube portion of an endoscope end portion of the bending stiffness variable body has a full recess fitting. 【請求項8】 請求項5ないし7のいずれか1項記載の内視鏡の可撓管部の可撓性可変装置において、上記外面テーパ突起に、上記曲げ剛性可変体と上記筒状牽引部材が挿通可能な貫通孔を形成した内視鏡の可撓管部の可撓性可変装置。 8. The flexible variable device of the flexible tube portion of the endoscope according to any one of claims 5 to 7, to the outer surface tapered protrusion, the flexural rigidity changing body and the tubular traction member There flexible variable device of the flexible tube portion of an endoscope to form a can be inserted through holes. 【請求項9】 請求項1から8のいずれか1項記載の内視鏡の可撓管部の可撓性可変装置において、上記曲げ剛性調整具の操作機構部は、 正逆方向の回動操作によって、上記曲げ剛性調整具着脱機構を介して該操作機構部を上記処置具挿入口突起に対して固定または取り外しさせる着脱操作環と、該着脱操作環と略共通の回動中心による正逆方向の回動操作によって、上記曲げ剛性可変体を硬化または軟化させる可撓性調整操作環とを備えている内視鏡の可撓管部の可撓性可変装置。 9. The flexible variable device of the flexible tube portion of an endoscope according to any one of claims 1 to 8, the bending operation mechanism of the rigid adjuster is in the forward and reverse directions rotation by the operation, the attaching and detaching operation ring the the manipulation mechanism via a flexural rigidity adjuster detaching mechanism is fixed or removable with respect to the treatment instrument insertion port projections, forward and reverse by the detachable operating ring substantially common center of rotation the direction of the rotation operation, the bending flexibility varying device of the flexible tube portion of an endoscope and an flexible adjustment operation ring to cure or soften the variable stiffness member. 【請求項10】 請求項9記載の内視鏡の可撓管部の可撓性可変装置において、上記着脱操作環による操作機構部の固定用の回動方向と、上記可撓性調整操作環による曲げ剛性可変体の硬化用の回動方向が同じである内視鏡の可撓管部の可撓性可変装置。 10. A flexible variable device of the flexible tube portion of an endoscope according to claim 9, the rotational direction of the fixing operation mechanism unit by the detaching operation ring, the flexible adjustment operation ring the endoscope flexible variable device of the flexible tube portion of the rotating direction of the curing of the variable stiffness member is the same bending by. 【請求項11】 請求項9または10記載の内視鏡の可撓管部の可撓性可変装置において、上記着脱操作環の内周面に上記内面ねじ溝が形成されている内視鏡の可撓管部の可撓性可変装置。 11. A flexible variable device of the flexible tube portion according to claim 9 or 10 endoscope according, endoscopes said internally threaded grooves on the inner peripheral surface of the attachment-detachment operating ring is formed flexible variable device of the flexible tube portion.
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