JP2005131211A - Externally mounted channel for endoscope - Google Patents

Externally mounted channel for endoscope Download PDF

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JP2005131211A
JP2005131211A JP2003372353A JP2003372353A JP2005131211A JP 2005131211 A JP2005131211 A JP 2005131211A JP 2003372353 A JP2003372353 A JP 2003372353A JP 2003372353 A JP2003372353 A JP 2003372353A JP 2005131211 A JP2005131211 A JP 2005131211A
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endoscope
external channel
portion
body
channel
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Koji Nakamoto
孝治 中本
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Olympus Corp
オリンパス株式会社
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<P>PROBLEM TO BE SOLVED: To be capable of confirming the protruding amount and the protruding direction of a treating tool or the like from an externally mounted channel body when operating an endoscope to which an externally mounted channel is mounted in the body cavity even when enlargement of the diameter of the externally mounted channel body is attempted. <P>SOLUTION: The flexible externally mounted channel 2 which is attachably and detachably disposed in an insertion part provided on the soft type endoscope 1, and which is equipped with the externally mounted channel body 2a and a fixing part 30 which mounts the tip part 32 of the externally mounted channel body 2a to the tip end of the insertion part in a protruded state so as to enable confirming in the observation field of vision of the endoscope, and the endoscope 1 using this are offered. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、内視鏡本体に着脱可能な外付けチャンネル及びこれを備えた内視鏡に関するものである。 The present invention relates to an endoscope having external channel and this detachable from the endoscope body.

従来、人体の消化管内に挿入可能な内視鏡の用途は診断から治療へとその適用範囲は拡大している。 Conventionally, a human digestive tract insertable endoscope applications its scope to the treatment from the diagnostic is expanding. また、治療内容も癌を切除する内視鏡的粘膜切除術,内視鏡的止血及び内視鏡的胃痩造設術など多様化しており、これら治療を行うための処置具を挿通する処置用チャンネルに求められる要求も多様化している。 Moreover, endoscopic mucosal resection therapeutic regimen also excised cancer, has been diversification endoscopic hemostasis and endoscopic gastric 痩造 設術, for the treatment of inserting a treatment instrument for performing these treatment demands made to the channel is also diversified. さらに、内視鏡の基本機能である患部洗浄,送気,送水等を行うためのチャンネルも重要である。 Further, the affected area cleaned is a basic feature of the endoscope, air channel for conducting water or the like is also important.
このような状況の中、多様化するこれら処置用チャンネルの要求に応えるため、従来の内視鏡を活用しながら効率的に治療を行うことを目的として、内視鏡の挿入部に着脱自在に併設される外付けチャンネルが考案されている。 Under these circumstances, to meet the requirements of these treatment channel diversified, for the purpose of performing efficiently treated while utilizing conventional endoscope, removably in the insertion portion of the endoscope the hotel is the external channel has been devised.

この外付けチャンネルとして、例えば、外付けチャンネルに挿通されたポリープ回収用処置具が他の治療の作業性を向上させるため、外付けチャンネルの先端部を内視鏡観察視野に見えないように手元側に退避して設けたものが提案されている(例えば、特許文献1参照。)。 Hand as the external channel, for example, as for external channel into the insertion polyp recovery treatment tool to improve the workability of the other treatments, invisible tip of the external channel in an endoscope observation field those provided by recessed toward has been proposed (e.g., see Patent Document 1.).
また、外付けチャンネルを容易に内視鏡の挿入部に装着でき、内視鏡の挿入部の外径に関わらず任意の位置および方向に取り付けられることを目的としたものも提案されている(例えば、特許文献2参照。)。 Further, the external channel can be easily mounted on the insertion portion of the endoscope, it has been proposed intended to be attached to an arbitrary position and direction regardless of the outer diameter of the insertion portion of the endoscope ( For example, see Patent Document 2.). この特許文献2に記載の外付けチャンネルは、先端部にシート状の可撓性を有する取付部を備え、この取り付け部の装着側に粘着層等の止着層を設けたものである。 External channel described in Patent Document 2 is provided with a mounting portion having a sheet-like flexible tip is provided with a fastening layer of the adhesive layer or the like on the mounting side of the mounting portion.
さらに、可撓性を有する内視鏡の挿入部に外付けチャンネルを取り付けても挿入部の湾曲に対して柔軟に対応できるようにしたものも提案されている(例えば、特許文献3参照。)。 Furthermore, flexible attaching an external channel in the insertion portion of an endoscope having a has also been proposed that to allow to flexibly cope with even the insertion portion curved (e.g., see Patent Document 3.) . この特許文献3に記載の外付けチャンネルは、外付けチャンネル本体の外周に凸部を設けるとともに、外付けチャンネルを内視鏡の挿入部に取り付けるための固定具に外付けチャンネル本体の可動を所定範囲内に規制する手段を設けたものである。 External channel described in Patent Document 3, provided with a convex portion on the outer periphery of the external channel body, predetermined movable external channel main body fixture for attachment to the insertion portion of the endoscope external channel it is provided with a means for regulating the range.
特開平11−192203号公報 JP 11-192203 discloses 実用考案登録第2558354号公報 Practical devised Registration No. 2558354 discloses 実開昭58−28813号公報 Japanese Utility Model Publication No. 58-28813

しかしながら、上記従来の技術には以下のような課題が残されている。 However, the above conventional techniques are left the following problems.
内視鏡的治療への要求の高まりと適応拡大を考慮すると外付けチャンネル本体の管路径の拡大は今後重要になると考えられている。 Expansion of the endoscope conduit diameter of consideration of external channel body to increase the indications of requests to mirror treatment is considered the future become important. この場合、管路径の拡大により、外径の拡大された外付けチャンネル本体を備えた外付けチャンネルを内視鏡の挿入部に取り付けると、体腔内に挿入される外付けチャンネルを含む内視鏡の挿入部の直径はさらに太径化し、患者にかかる負担も大きくなる。 In this case, the expansion of the pipe diameter, when attached to an insertion portion of an endoscope external channel with an enlarged external channel body having an outer diameter of an endoscope that includes an external channel which is inserted into a body cavity the diameter of the insertion portion is further thick diameter, burden increases according to the patient.

また、従来の技術はいずれにおいても、処置時における操作性の向上,外付けチャンネルの取り付け作業性の向上及び可動性の向上等の機能面に着眼されて考案されたものである。 Further, in either the prior art also, improvement in operability at the time of the treatment, which was devised been focusing on the functional surface of the improvement of improvement and mobility of the attachment workability of the external channel. しかし、これらは、内視鏡の挿入部に装着される外付けチャンネル本体の径が小さい場合には有効であるが、外付けチャンネルの太径化に伴い、実質上の内視鏡挿入部も太くなってしまう。 However, they are effective when the diameter of the external channel body is attached to the insertion portion of the endoscope is small, with the thickness diameter of the external channel, also the endoscope insertion portion of the substantially it becomes thicker. さらに、外付けチャンネルが手元側に退避した位置に設けられているため、外付けチャンネル本体から処置具等を目的の部位に突出させるのは困難である。 Furthermore, because it is provided in a position external channel is retracted proximally, it is difficult to project the site of intended treatment tool or the like from the external channel body.
本発明は上述した事情に鑑みてなされたものであって、外付けチャンネル本体の径の太径化を図った場合においても、外付けチャンネルを取り付けた内視鏡を体腔内において操作する際、外付けチャンネル本体から処置具等の突出量及び突出方向を確認することが可能となる外付けチャンネル及びこれを備えた内視鏡を提供ことを目的とする。 The present invention was made in view of the above circumstances, when aimed at the bold diameter of the diameter of the external channel body also when operating in a body cavity an endoscope fitted with external channels, and an object thereof is provide an external channel and the endoscope equipped with the same which is possible to check the amount of protrusion and the protruding direction of the treatment instrument or the like from the external channel body.

上記目的を達成するために、本発明は、以下の手段を提供する。 To achieve the above object, the present invention provides the following means.
本発明の外付けチャンネルは、軟性式内視鏡に設けられた挿入部に、着脱自在に併設され可撓性を有する外付けチャンネルにおいて、外付けチャンネル本体と、前記挿入部の先端に前記外付けチャンネル本体の先端部を内視鏡観察視野内で確認可能に突出状態で取り付ける固定部とを備えることを特徴とする。 External channel of the present invention, the insertion portion provided in the flexible endoscope, the external channel having a detachably features are flexible, the outer and the external channel main body, the tip of the insertion portion further comprising a fixing portion for attaching the confirmation can projecting state endoscopic observation field the tip of the attached channel main body and said.

この発明によれば、外付けチャンネルの先端部が内視鏡観察視野から確認できる位置に配されているため、外付けチャンネル本体内部に把持鉗子等の処置具を挿通させた際、処置具の突出方向及び突出量を確認することが可能となる。 According to the present invention, since it is arranged at a position where the tip portion of the external channel can be confirmed from the endoscope observation field, when obtained by inserting a treatment tool such as grasping forceps to internal external channel body, the treatment instrument it is possible to confirm the protruding direction and the protruding amount.

また、本発明の外付けチャンネルは、前記固定部に対して前記外付けチャンネル本体がその基端側へ移動をすること規制する固定手段を設けることが好ましい。 Also, external channel of the present invention is preferably provided with fixing means for the external channel main body with respect to the fixed portion to regulate that the move to the base end side.
この発明によれば、固定手段を設けることにより、固定部に対する外付けチャンネル本体の移動が規制されることになるため、外付けチャンネル本体の固定部からの最小突出量を規定することができる。 According to the invention, by providing the fixing means, to become the movement of the external channel body is restricted with respect to the fixed portion, it is possible to define the minimum amount of protrusion of the fixed part of the external channel body. したがって、外付けチャンネル本体を内視鏡観察画面で常に確認しながら処置を行うことができる。 Therefore, it is possible to perform a treatment while constantly confirmed by endoscopic observation screen external channel body.

また、本発明の外付けチャンネルは、前記内視鏡視野内に表示される前記先端部の大きさを内視鏡観察視野の5分の1以下とすることが好ましい。 Also, external channel of the present invention is preferably less than one fifth of the endoscope observation field the size of the tip to be displayed on the endoscope in view.
この発明によれば、内視鏡挿入時に必要な視野は十分に確保した状態で、病変部位等の処置を行うことができる。 According to the present invention, the field of view required for the endoscope insertion while sufficient, it is possible to perform treatment such lesion.

また、本発明の外付けチャンネルは、前記外付けチャンネル本体が、吸引,送気,送水及び処置具の挿通を行う機能を有することが好ましい。 Also, external channel of the present invention, the external channel body, aspiration, air preferably has a function of performing insertion of the water supply and treatment device.
この発明によれば、外付けチャンネル本体に多機能を持たせることにより、外付けチャンネル本体を通じて様々な処置を行うことができるため、機能性に優れた装置にすることが可能となる。 According to the invention, by providing a multi-function to an external channel main body, it is possible to perform various treatments through an external channel main body, it is possible to an excellent device functionality.

本発明の内視鏡は、上記本発明の外付けチャンネルを備えていることを特徴とする。 The endoscope of the present invention is characterized in that it comprises an external channel of the present invention.
この発明によれば、内視鏡によって体腔内を観察しながら、外付けチャンネルに処置具等を挿入し病変部位等の処置を行うことが可能となる。 According to the present invention, while observing the body cavity by the endoscope, inserting the treatment tool or the like to external channel and it is possible to perform treatment such lesion.

本発明に係る外付けチャンネルによれば、外付けチャンネル本体の先端部を内視鏡観察視野内で確認できる位置に設けることによって、体腔内を処置している際、外付けチャンネル本体を常に術者が確認できる。 According to external channel according to the present invention, is provided so as to be confirmed by an endoscopic observation field the tip of the external channel body, when being treated inside the body cavity, always operative the external channel body who can be confirmed. したがって、処置具の突出方向及び突出量を確認しながら処置を行うことができるため、目的の部位に処置具等を突出させることが可能となる。 Therefore, it is possible to perform a treatment while confirming the protruding direction and the protruding amount of the treatment instrument, it is possible to protrude the treatment instrument or the like at the site of interest.

以下、本発明の第1実施形態に係る外付けチャンネルについて図1から図9を参照して説明する。 The following describes an external channel according to a first embodiment of the present invention from FIG. 1 with reference to FIG.
本実施形態に係る内視鏡1は、図1に示す内視鏡1の本体に、図2に示す外付けチャンネル2を装着させて使用するものである。 The endoscope 1 according to this embodiment, the main body of the endoscope 1 shown in FIG. 1, it is to use by mounting the external channel 2 shown in FIG.
内視鏡1の本体は、図1に示すように、可撓性の挿入部11を有しており、これは、硬質の内視鏡先端部12と、この内視鏡先端部12の基端に設けられた湾曲自在の湾曲部13と、この湾曲部13の後端から内視鏡操作部14まで伸びる長尺の可撓管部15とから構成されている。 Body of the endoscope 1, as shown in FIG. 1 has a flexible insertion portion 11, which includes a endoscope tip portion 12 of the rigid base of the endoscope tip portion 12 a bending portion 13 of bendable provided on the end, and a endoscope operation section of the long extending to 14 flexible tube 15 for the rear end of the bending portion 13.

内視鏡先端部12には、CCD(図示略)に観察画像を結像するための観察窓16と、暗い体腔内に照明光を照射する照明窓17と、観察窓16に付着した体液等を取り除くためのノズル18と、吸引,把持鉗子等の処置具等を挿通し処置を行うためのチャンネル19とが設けられている。 The endoscope distal end portion 12, CCD and the observation window 16 for forming an observation image (not shown), dark and illumination window 17 for irradiating illumination light to the body cavity, body fluid or the like attached to the observation window 16 a nozzle 18 for removing the suction, a channel 19 for performing inserting the treatment tool such as grasping forceps treatment is provided.

内視鏡操作部14には、内視鏡先端部12に設けられたノズル18に空気や水を送り込む操作を行うための送気・送水ボタン20と、チャンネル19からの吸引操作を行うための吸引ボタン21と、湾曲部13を上下における任意の方向に湾曲操作するアングルノブ22と、先端側には可撓管部15内に配設されチャンネル19に連通した処置具を挿入するための処置具挿入口部23とが設けられている。 The endoscope operation portion 14, a gas supply and water supply button 20 for performing an operation for feeding air or water to the nozzles 18 provided in the endoscope tip portion 12, for performing a suction operation from the channel 19 a suction button 21, the angle knob 22 for bending operation of the bending portion 13 in any direction in the up and down action for inserting a treatment instrument which communicates with the channel 19 disposed within the flexible tube portion 15 on the distal side a tool insertion opening 23 is provided.
また、観察窓16により観察した画像は、図5に示すように、内視鏡観察画面24に表示されるようになっている。 The image observed by the observation window 16, as shown in FIG. 5, and is displayed in the endoscopic observation window 24.

外付けチャンネル2は、図2に示すように、内視鏡1の本体の挿入部11と略同程度の長さを有する外付けチャンネル本体2aと、内視鏡先端部12に装着可能に形成された先端固定部(固定部)30と、外付けチャンネル本体2aに対して係合しプラスチック等の樹脂からなる複数の係止部31とを備えている。 External channel 2, as shown in FIG. 2, and the external channel main body 2a having substantially a length substantially equal to that of the main body of the insertion portion 11 of the endoscope 1, can be mounted to form the endoscope leading end portion 12 a distal fixed portion (fixed portion) 30 which is, and a plurality of locking portions 31 formed of resin such engaged plastic against external channel body 2a.
外付けチャンネル本体2aの手元側には、外付けチャンネル本体2a内部に処置具を挿入したり、吸引のための三方活栓性体を取り付けたりするためのチャンネル口金35が接着などで固定されて取り付けられている。 Proximally of the external channel body 2a is to insert the procedure instrument inside an external channel main body 2a, and the channel mouth 35 for mounting or a three-way stopcock of the body for aspiration is fixed in such adhesive attachment It is. また、外付けチャンネル本体2aの先端側に設けられ開口部を有する先端開口部(先端部)32の外周部は、図3に示すように、r状の面取りが施されており、外付けチャンネル2を内視鏡1の本体に取り付けて体腔内に挿入する際に体壁を傷つけないような配慮がなされた構成になっている。 The tip opening having an opening provided on a distal end side of the external channel main body 2a the outer periphery of the (tip) 32, as shown in FIG. 3, r-shaped chamfering have been applied, external channel 2 consideration so as not to damage the body wall attached to the body of the endoscope 1 when inserted into the body cavity a is in the configuration was made.

先端固定部30は、外付けチャンネル本体2aに対して接着などで固定されゴム等の弾性体からなっている。 Distal fixing portion 30 is made of an elastic material, such as is fixed by an adhesive rubber against external channel body 2a. また、外付けチャンネル本体2aの材質としては、ポリフッ化エチレン等のフッ素樹脂,塩化ビニル及びウレタン等の比較的柔軟に湾曲可能な樹脂材料によって形成されている。 The material for the external channel body 2a, polyfluoroethylene or fluorine resin, and is formed by a relatively flexible bendable resin material such as vinyl chloride and urethane.
係止部31は、内視鏡1の本体の湾曲部13及び可撓管部15に係合可能なC字状のアーム部31aと、外付けチャンネル本体2aが挿通されるガイド部31bとを備えている。 Locking portion 31 includes an endoscope 1 of the arm portion 31a in the bending portion 13 and the flexible tube portion 15 of the engageable C-shaped body, and a guide portion 31b for external channel body 2a is inserted It is provided.

次に、外付けチャンネル2を内視鏡1の本体に取り付ける方法について図4から図6を参照して説明する。 Next, a method of attaching the external channel 2 to the main body of the endoscope 1 with reference to FIGS. 4-6 will be described.
まず、先端固定部30を内視鏡先端部12に取り付ける方法を説明する。 First, a method of attaching the distal fixing portion 30 in the endoscope tip portion 12. 図4(a)示すように、内視鏡先端部12が装着される先端固定部30の開口部33の内径aと内視鏡先端部12の外径bとの寸法関係をa<bに設定している。 As shown FIG. 4 (a), a dimensional relationship between the outer diameter b of the inner diameter a and the endoscope tip portion 12 of the opening 33 of the distal fixing portion 30 which endoscope front end portion 12 is attached to a <b It is set. このため、先端固定部30を内視鏡先端部12に装着した場合、弾性体による締め付け力によって強固に固定される。 Therefore, when wearing the distal fixing portion 30 in the endoscope tip portion 12, it is firmly fixed by the clamping force of the elastic member. また、先端固定部30の先端側には突き当て面34が設けられており、さらに、先端固定部30からの外付けチャンネル本体2aの突出量をあらかじめ所定の設定寸法cに固定している。 Further, the leading end side of the distal end fixing portion 30 is provided with abutment surfaces 34, further fixed in advance predetermined set size c the amount of projection of the external channel body 2a from the front end fixing portion 30. このため、突き当て面34を内視鏡先端部12に突き当たるまで挿入することによって装着することにより、内視鏡先端部12からの外付けチャンネル本体2aの突出量も一定に保つことが可能となっている。 Therefore, by mounting by inserting until it hits the abutment surface 34 in the endoscope tip portion 12, the amount of projection of the external channel main body 2a from the endoscope tip portion 12 also can be kept constant going on.
このとき、図4(b)に示すように、観察窓16の視野角はθであり、図5に示すように、内視鏡観察画面24における内視鏡視野dに対する先端開口部32の突出量eは5分の1以下に抑えられており、内視鏡挿入時に必要な視野は十分に確保できている。 At this time, as shown in FIG. 4 (b), the viewing angle of the observation window 16 is theta, as shown in FIG. 5, the projection of the distal end opening portion 32 for an endoscope visual field d of the endoscope observation screen 24 the amount e is suppressed to 1/5 or less, the field of view required for endoscope insertion is made sufficiently secured.

次に、係止部31を内視鏡1本体の湾曲部13及び可撓管部15に取り付ける方法を説明する。 Next, a method of attaching the locking portion 31 in the endoscope 1 main curved portion 13 and the flexible tube 15 of. 図6に示すように、アーム部31aの開口幅gと湾曲部13及び可撓管部15の外径hとの寸法関係をg<hに設定しているため、係止部31を湾曲部13及び可撓管部15に装着しようとした場合、図6の(b)に示すように、湾曲部13及び可撓管部15の外径hより小さい開口幅gのC字状のアーム部31aが弾性変形によって湾曲部13及び可撓管部15と嵌合可能となる。 As shown in FIG. 6, because it sets the dimensional relationship between the outer diameter h of the opening width g of the arm portion 31a bent portion 13 and the flexible tube 15 to the g <h, the curved portion of the locking portion 31 If you try to mount 13 and the flexible tube 15, as shown in (b) of FIG. 6, C-shaped arm portions of the outer diameter smaller than h opening width g of the curved portion 13 and the flexible tube 15 31a is engageable with the curved portion 13 and the flexible tube 15 by the elastic deformation. これにより、装着後は容易に係止部31が湾曲部13及び可撓管部15から外れることはない構成となっている。 Thus, after mounting it is easily is configured engaging portion 31 is never disengaged from the curved portion 13 and the flexible tube 15.

また、ガイド部31bの内径には、図6(a)に示すように、外付けチャンネル本体2aの挿入時にすき間fを設定している。 Further, the inner diameter of the guide portion 31b, as shown in FIG. 6 (a), sets the gap f during insertion of the external channel body 2a. したがって、図7に示すように、外付けチャンネル本体2aの後端側はフリーであり、ガイド部31b間を軸方向に移動可能であるため、外付けチャンネル本体2aが先端固定部30を経由して内視鏡先端部12に固定されている状態で湾曲操作を行っても抵抗感のないスムースな湾曲操作を行うことが実現できる。 Accordingly, as shown in FIG. 7, the rear end side of the external channel body 2a is free, since it is movable between the guide portion 31b in the axial direction, external channel body 2a goes through the distal fixed portion 30 to perform smooth bending operation without reluctance even if the bending operation while endoscope is fixed to the distal end portion 12 Te can be realized.

次に、以上の構成からなる本実施形態の外付けチャンネル及び内視鏡の使用方法について図8を参照して、以下に説明する。 Next, with reference to FIG. 8 using the external channel and the endoscope of the present embodiment having the above configuration will be described below.
まず、外付けチャンネル2の先端固定部30の開口部33に内視鏡先端部12を装着し、内視鏡1の本体の挿入部11にアーム部31aを装着する。 First, the opening 33 of the distal fixing portion 30 of the external channel 2 wearing the endoscope front end portion 12, for attaching the arm portion 31a to the main body of the insertion portion 11 of the endoscope 1. 内視鏡1の本体の挿入部11を体腔内に挿入した後、目的の病変に到達したところで、内視鏡1の本体のチャンネル19内に高周波メス41を挿通させ、外付けチャンネル本体2a内部に把持鉗子40を挿通する。 After the endoscope 1 of the body of the insertion portion 11 is inserted into a body cavity, where it reaches the lesion of interest, the high-frequency knife 41 is inserted into the endoscope 1 of the body of the channel 19, the internal external channel body 2a inserting the grasping forceps 40.
次に、内視鏡観察画面24に患部をとらえた際、把持鉗子40及び高周波メス41をそれぞれから突出させ、高周波メス41により切開した粘膜42を把持鉗子40で持ち上げながら粘膜の下層を切除する。 Then, when caught affected area for endoscopic observation window 24, to protrude the grasping forceps 40 and the high-frequency knife 41 from each ablating underlying mucosal lifting the mucous membrane 42 is incised by the high frequency knife 41 in the grasping forceps 40 .

すなわち、本実施形態に係る外付けチャンネル2及び内視鏡1によれば、外付けチャンネル2の先端開口部32が内視鏡観察画面24から確認できる位置に配されているため、把持鉗子40等の処置具の突出方向及び突出量が確認でき、目的の部位に把持鉗子40等の処置具を突出させることが可能となる。 That is, according to the external channel 2 and the endoscope 1 according to the present embodiment, since it is arranged at a position where the tip opening 32 of the external channel 2 can be confirmed from the endoscope observation screen 24, the grasping forceps 40 It confirmed the protruding direction and the protruding amount of the treatment instrument and the like, it becomes possible to protrude the treatment instrument such as a grasping forceps 40 to the site of interest. また、操作性に優れた内視鏡的粘膜切除術を提供することができる。 Further, it is possible to provide an endoscopic mucosal resection with excellent operability.
なお、本実施形態において、積極的に体壁を傷付けないようにするには、図9に示すように、先端開口部32が外周に進むにしたがって傾斜した形状とすることにより可能となる。 In the present embodiment, to avoid damaging the aggressive body wall, as shown in FIG. 9, the distal end opening 32 is made possible by the inclined shape with the progress on the outer circumference.

次に、本発明の第2実施形態に係る外付けチャンネル及び内視鏡について図10から図13を参照して説明する。 Next, a description from FIG. 10, the external channel and the endoscope according to the second embodiment of the present invention with reference to FIG. 13.
本実施形態に係る外付けチャンネル50及び内視鏡1において、外付けチャンネル50と内視鏡1の係止手段として係止部51が薄膜状のカバー部52を用いたこと及びガイド部53を備える点及び外付けチャンネル50にストッパ部(固定手段)54が形成されている点で第1の実施形態と相違している。 In external channel 50 and the endoscope 1 according to the present embodiment, the external channel 50 and the endoscope that the locking portion 51 as a locking means of the mirror 1 has a thin film-like cover portion 52 and the guide portion 53 first embodiment in points and external channel 50 provided in that the stopper (fixing means) 54 is formed to be different.

カバー部52は、図10に示すように、外付けチャンネル50の先端固定部30の後端側に設けられており、接着等により強固に先端固定部30に固定されている。 Cover portion 52, as shown in FIG. 10, is provided on the rear end side of the distal end fixing portion 30 of the external channel 50, and is fixed firmly to the distal end fixing portion 30 by bonding or the like. ガイド部53は、アーチ状にカバー部52に複数個取り付けられている。 The guide portion 53 is attached a plurality to the cover portion 52 in an arch shape. これらにより、カバー部52とガイド部53との間に外付けチャンネル本体50aが移動可能な状態で挿通されている。 These, the external channel body 50a is inserted in a movable state between the cover portion 52 and the guide portion 53.
また、カバー部52は、挿入部11と略同程度の長さを有し、また、略同程度の内径を有しているため、湾曲部13及び可撓管部15を被覆可能となっている。 The cover portion 52 has a length substantially equal to that of the insertion portion 11, also substantially since it has the same degree of internal diameter, it becomes possible covering the bending portion 13 and the flexible tube 15 there. さらに、カバー部52の後端部は、図12に示すように、手術用のテープ等の粘着テープ56によって内視鏡1の挿入部11に固定可能となっている。 Further, the rear end portion of the cover portion 52, as shown in FIG. 12, and is fixable to the insertion portion 11 of the endoscope 1 by an adhesive tape 56 of the tape for surgery.
先端固定部30には挿通部30aが設けられており、この挿通部30aは外付けチャンネル本体50aを挿通可能とし、外付けチャンネル本体50aが摺動可能な内径となっている。 The distal end fixing portion 30 and insertion portion 30a is provided, the insertion portion 30a is set to be inserted an external channel main body 50a, an external channel main body 50a is made slidable inside diameter.

ストッパ部54は、外付けチャンネル本体50aの先端側の外周に突出して形成されており、接着などにより外付けチャンネル本体50aに対して固定されている。 Stopper portion 54 is formed to protrude to the outer periphery of the distal end side of the external channel body 50a, and is fixed to the external channel body 50a by adhesion or the like. これにより、外付けチャンネル本体50aの先端固定部30からの最小突出量は規制されている。 Thus, the minimum amount of protrusion of the distal fixing portion 30 of the external channel body 50a is restricted. すなわち、開口部32からiの位置にストッパ部54を設けることにより、先端固定部30を内視鏡先端部12に固定した場合、図11に示すように、内視鏡先端部12からの最小突出量をiとして規制することが可能となる。 That is, the minimum from the opening 32 by providing the stopper portion 54 to the position of the i, when fixing the distal fixing portion 30 in the endoscope tip portion 12, as shown in FIG. 11, from the endoscope tip portion 12 it is possible to regulate the amount of protrusion as i. このとき、観察窓16の視野角はθであり、外付けチャンネル本体50aを内視鏡観察画面24で確認できる寸法に設定している。 At this time, the viewing angle of the observation window 16 is theta, is set to a dimension that can be confirmed by the endoscopic observation window 24 external channel main body 50a.

次に、外付けチャンネル50を内視鏡1に取り付ける方法について図12を参照して説明する。 It will now be described with reference to FIG. 12 how to attach an external channel 50 in the endoscope 1.
まず、外付けチャンネル50の先端固定部30と内視鏡先端部12とを第1実施形態と同様に取り付ける。 First, attaching a distal fixing portion 30 and the endoscope tip portion 12 of the external channel 50 as in the first embodiment. 次に、カバー部52を内視鏡1の本体の挿入部11の全長にわたって被覆し、後端部は粘着テープ56によって固定する。 Next, a cover enclosing portion 52 over the entire length of the endoscope 1 of the body of the insertion portion 11, the rear end is fixed by an adhesive tape 56.

次に、以上の構成からなる本実施形態の外付けチャンネル50及び内視鏡1の使用方法について図13を参照して、以下に説明する。 Next, with reference to FIG. 13 using the external channel 50 and the endoscope 1 of the present embodiment having the above configuration will be described below.
まず、外付けチャンネル50の先端固定部30を装着し、カバー部52を装着する。 First, the distal fixing portion 30 of the external channel 50 is mounted, mounting the cover portion 52. そして、内視鏡1の挿入部11を体腔内に挿入し、内視鏡1のチャンネル19内に止血用ヒートプローブ55を挿通する。 Then, the insertion portion 11 of the endoscope 1 is inserted into a body cavity, inserting a hemostatic heat probe 55 into the channel 19 of the endoscope 1.
次に、体腔内の患部の止血を行う際、外付けチャンネル本体50aを出血部位に押し出し、血液を吸引する。 Then, when performing hemostasis of the affected part in the body cavity, extruding an external channel main body 50a to the bleeding site, to suck the blood. そして、内視鏡観察画面24で患部を確認しながら、内視鏡1の本体のチャンネル19に挿通した止血用ヒートプローブ55により止血を行う。 Then, while confirming the affected area with the endoscope observation window 24, hemostasis by the endoscope 1 of the hemostatic heat probe 55 inserted through the channel 19 of the body.

すなわち、本実施形態に係る外付けチャンネル50及び内視鏡1によれば、外付けチャンネル本体50aを最小突出量i以上であれば任意の軸方向に位置させることが可能となる。 That is, according to the external channel 50 and the endoscope 1 according to the present embodiment, it is possible to position the external channel body 50a in an arbitrary axial direction as long as the minimum amount of protrusion i above. したがって、外付けチャンネル本体50aを内視鏡観察画面24で必ず確認できる位置において軸方向の移動が可能となるため、目的の部位に処置具等を突出させ、その突出量及び突出方向を確認しながら処置を行うことが可能な内視鏡的処置を提供することができる。 Accordingly, since it becomes possible axial movement at a position always be confirmed by endoscopic observation window 24 external channel main body 50a, by protruding the procedure instrument or the like to a site of interest, to confirm the amount of projection and the projection direction while it is possible to provide an endoscopic procedure that can take action. また、複数個の係止部を挿入部11に装着する必要がないので、外付けチャンネル50を内視鏡1の本体に取り付ける作業がより簡便になる。 Since it is not necessary to install a plurality of engaging portions on the insertion portion 11, the work of attaching the external channel 50 to the body of the endoscope 1 becomes more convenient.

次に、本発明の第3実施形態に係る外付けチャンネル及び内視鏡について図14を参照して説明する。 Next, the external channel and the endoscope with reference to FIG. 14 will be described according to a third embodiment of the present invention.
本実施形態に係る外付けチャンネル60及び内視鏡1において、外付けチャンネル60の先端固定部(固定手段)61の形状で第1,第2の実施形態と相違している。 In external channel 60 and the endoscope 1 according to the present embodiment, first in the form of the tip fixing portion (fixing means) 61 of the external channel 60 is different from the second embodiment.
先端固定部61は、外付けチャンネル本体60aの先端に設けられ切り欠き部62aが形成された固定部62と、溝部12aが形成された内視鏡先端部12bと、熱収縮チューブからなるバンド部63とを備えている。 Distal fixing portion 61 includes a fixed portion 62 external channel body 60a notched portions 62a provided at the tip of the formed, and endoscope tip portion 12b inner groove 12a is formed, the band portion comprising a heat shrinkable tube and a 63. この切り欠き部62a及び溝部12aは、固定部62及び内視鏡先端部12bの外周の約半周にわたって設けられており、長さ方向の幅が略同寸法に設定されている。 The notches 62a and the groove 12a is provided over approximately half circumference of the outer periphery of the fixing portion 62 and the endoscope front end portion 12b, the width in the longitudinal direction is set to approximately equal sizes. また、固定部62は、図14(b)に示すように、先端開口部32を内視鏡1の本体の観察窓16から確認できる位置に固定されている。 The fixing unit 62 includes, as shown in FIG. 14 (b), is fixed in a position that can confirm the distal end opening portion 32 from the endoscope 1 of the body of the observation window 16.
バンド部63は、外周の一部に設けられた把持部63aと、把持部63aの両端に設けられた切り溝部63bとから構成されている。 Band portion 63 is constituted by a grip portion 63a provided in a part of the periphery, the cutting groove 63b provided at both ends of the grip portion 63a.

ここで、外付けチャンネル本体60aの先端部を内視鏡先端部12に取り付ける場合、切り欠き部62aと溝部12aとにバンド部63を被覆し、バンド部63を過熱し収縮させて、外付けチャンネル本体60aの先端部と内視鏡先端部12とを固定する。 Here, when mounting the tip of the external channel body 60a in the endoscope tip portion 12, the band portion 63 is coated on the notch portion 62a and the groove 12a, by overheating the band portion 63 shrink, external fixing the endoscope tip portion 12 and the distal end portion of channel main body 60a.
一方、外付けチャンネル本体60aの先端部と内視鏡先端部12とを取り外す場合、把持部63aを摘んで切り溝部63bに沿う方向に引っ張ることによって、バンド部63を破損させ、外付けチャンネル本体60aの先端部と内視鏡先端部12とを取り外すことが可能となる。 On the other hand, when removing the external channel main body 60a tip and endoscope tip portion 12 of, by pulling in the direction along the outright groove 63b by pinching the grip portion 63a, defeat the band portion 63, external channel body it is possible to remove the 60a tip and endoscope tip portion 12 of the.

すなわち、本実施形態に係る外付けチャンネル60及び内視鏡1によれば、外付けチャンネル60を内視鏡観察画面24で必ず確認できる位置に設定することが可能となる。 That is, according to the external channel 60 and the endoscope 1 according to the present embodiment, it is possible to set to a position always be confirmed by endoscopic observation window 24 external channels 60. また、外付けチャンネル本体60aの先端部と内視鏡先端部12とがバンド部63により固定されているため、外付けチャンネル本体60aの先端部と内視鏡先端部12との取り付け及び取り外しを容易に行うことが可能となる。 Further, since the external channel main body 60a tip and endoscope tip portion 12 of is fixed by the band portion 63, the attachment and removal of the external channel main body 60a tip and endoscope tip portion 12 of the it is possible to easily perform.
なお、本実施形態において、バンド部63として熱収縮チューブを用いたが、外付けチャンネル本体60aの先端部と内視鏡先端部12とを圧着できれば良いため、例えば、ゴム等の弾性材料を有するものであっても良い。 In the present embodiment uses a heat shrinkable tube as a band portion 63, since the external channel main body 60a tip and endoscope tip portion 12 of the need only be crimped, for example, has an elastic material such as rubber it may be the one.
また、本発明の技術範囲は上記実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 Further, the technical scope of the present invention is not limited to the above embodiment, it is possible to add various modifications without departing from the scope of the present invention.

本発明の第1実施形態に係る内視鏡を示す斜視図である。 The endoscope according to the first embodiment of the present invention is a perspective view showing. 本発明の第1実施形態に係る外付けチャンネルを示す斜視図である。 An external channel according to a first embodiment of the present invention is a perspective view showing. 本発明の第1実施形態に係る外付けチャンネルの先端開口部を示す断面図である。 The distal opening of the external channel according to a first embodiment of the present invention is a cross-sectional view illustrating. 本発明の第1実施形態に係る外付けチャンネルの先端固定部を内視鏡先端部に(a)取り付ける前、(b)取り付けた後の状態を示す要部を破断した断面図である。 The endoscope tip portion distal end fixing portion of the external channel according to a first embodiment of the present invention (a) attaching front, a cross-sectional view broken a main part showing a state after attaching (b). 本発明の第1実施形態に係る外付けチャンネルを内視鏡の本体に取り付けた後、内視鏡観察画面の映像を示す模式図である。 After attaching the body of the endoscope external channel according to a first embodiment of the present invention, it is a schematic diagram showing an image of the endoscope observation screen. 本発明の第1実施形態に係る外付けチャンネルの係止部を内視鏡湾曲部及可撓管部に(a)取り付ける前、(b)取り付けた後の状態を示す要部を破断した断面図である。 Before installing the locking portion of the external channel in the endoscope bending portion 及可 Shiwakan unit according to the first embodiment of the present invention (a), broken a main part showing a state after attaching (b) cross-section it is a diagram. 本発明の第1実施形態に係る外付けチャンネルを内視鏡に取り付けて湾曲部を湾曲させた状態を示す要部を破断した断面図である。 A state in which the bending portion is attached to an endoscope external channel is curved according to a first embodiment of the present invention is a cross-sectional view cutaway principal part showing. 本発明の第1実施形態に係る外付けチャンネル及び内視鏡を用いて内視鏡的粘膜切除術を示す斜視図である。 Is a perspective view showing an endoscopic mucosal resection with an external channel and the endoscope according to the first embodiment of the present invention. 図3に示す外付けチャンネルの先端開口部を変形例を示す断面図である。 It is a sectional view showing a modified example of the distal end opening portion of the external channel shown in FIG. 本発明の第2実施形態に係る外付けチャンネルを示す斜視図である。 An external channel according to a second embodiment of the present invention is a perspective view showing. 本発明の第2実施形態に係る外付けチャンネルの先端固定部を内視鏡先端部に取り付けた後の状態を示す要部を破断した断面図である。 Is a cross-sectional view broken a main part showing a state after attaching the tip fixed part of the external channel in the endoscope tip portion according to a second embodiment of the present invention. 本発明の第2実施形態に係る外付けチャンネルを内視鏡の本体に取り付けた状態を示す斜視図である。 A state attached to the body of the endoscope external channel according to a second embodiment of the present invention is a perspective view showing. 本発明の第2実施形態に係る外付けチャンネル及び内視鏡を用いて内視鏡的止血術を示す斜視図である。 Is a perspective view showing an endoscopic hemostasis using an external channel and the endoscope according to the second embodiment of the present invention. 本発明の第3実施形態に係る外付けチャンネルの先端部を内視鏡先端部に(a)取り付ける前、(b)取り付けた後の状態を示す斜視図である。 Before mounting the endoscope tip portion distal end portion of the external channel according to a third embodiment of the present invention (a), is a perspective view showing a state after the mounting (b).

符号の説明 DESCRIPTION OF SYMBOLS

d 内視鏡観察視野 1 内視鏡 2,50,60 外付けチャンネル 2a,50a,60a 外付けチャンネル本体 11 内視鏡挿入部 30 先端固定部(固定部) d endoscope observation field 1 endoscope 2,50,60 external channel 2a, 50a, 60a external inner channel main body 11 endoscope insertion portion 30 distal fixing portion (fixing portion)
32 先端開口部(先端部) 32 tip opening (tip)
54 ストッパ部(固定手段) 54 stopper (fixing means)
61 先端固定部(固定手段) 61 distal fixing portion (fixing means)

Claims (5)

  1. 軟性式内視鏡に設けられた挿入部に、着脱自在に併設され可撓性を有する外付けチャンネルにおいて、 The insertion portion provided in the flexible endoscope, the external channel having a detachably features are flexible,
    外付けチャンネル本体と、 And external channel body,
    前記挿入部の先端に前記外付けチャンネル本体の先端部を内視鏡観察視野内で確認可能に突出状態で取り付ける固定部とを備えることを特徴とする内視鏡用の外付けチャンネル。 External channel for an endoscope, characterized in that it comprises the said fixed part for mounting in identifiable protruded state the leading end of the external channel main body to the distal end of the insertion portion in the endoscope in the observation field.
  2. 前記固定部に対して前記外付けチャンネル本体がその基端側へ移動をすること規制する固定手段を設けたことを特徴とする請求項1に記載の内視鏡用の外付けチャンネル。 External channel for an endoscope according to claim 1, characterized in that said external channel main body with respect to the fixed portion is provided with a fixing means for regulating to a move to the base end side.
  3. 前記内視鏡視野内に表示される前記先端部の大きさを内視鏡観察視野の5分の1以下としたことを特徴とする請求項1または請求項2に記載の内視鏡用の外付けチャンネル。 For an endoscope according to claim 1 or claim 2, characterized in that it has less than one fifth of the endoscope observation field the size of the tip to be displayed on the endoscope in view external channel.
  4. 前記外付けチャンネル本体が、吸引,送気,送水及び処置具の挿通を行う機能を有することを特徴とする請求項1から請求項3のいずれか1項に記載の内視鏡用の外付けチャンネル。 The external channel body, suction, insufflation, external endoscopic according to claims 1, characterized in that it has a function for inserting the water supply and the treatment instrument in any one of claims 3 Channel.
  5. 請求項1から請求項4のいずれか1項に記載の外付けチャンネルを備えていることを特徴とする内視鏡。 An endoscope characterized by comprising an external channel according to any one of claims 1 to 4.

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