JP2002143078A - Outside tube for endoscope - Google Patents

Outside tube for endoscope

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Publication number
JP2002143078A
JP2002143078A JP2000340889A JP2000340889A JP2002143078A JP 2002143078 A JP2002143078 A JP 2002143078A JP 2000340889 A JP2000340889 A JP 2000340889A JP 2000340889 A JP2000340889 A JP 2000340889A JP 2002143078 A JP2002143078 A JP 2002143078A
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JP
Japan
Prior art keywords
endoscope
tube
portion
external tube
insertion portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
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JP2000340889A
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Japanese (ja)
Inventor
Hiroaki Goto
広明 後藤
Original Assignee
Olympus Optical Co Ltd
オリンパス光学工業株式会社
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Application filed by Olympus Optical Co Ltd, オリンパス光学工業株式会社 filed Critical Olympus Optical Co Ltd
Priority to JP2000340889A priority Critical patent/JP2002143078A/en
Publication of JP2002143078A publication Critical patent/JP2002143078A/en
Application status is Withdrawn legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To provide an outside tube for an endoscope that can expand the kinds of usable endo-therapy accessories, improve the safety of endoscope technique and expand applied cases. SOLUTION: A tube fixing ring 9 is provided for detachably engaging the tip part of a tube body 8 with the tip part of an insert part 3 of the endoscope 2. The engagement of the tube fixing ring 9 is released by the operation of a grip part 13 on the base end side of the tube body 8.

Description

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

【0001】 [0001]

【発明の属する技術分野】本発明は、内視鏡に着脱可能に取付けられる内視鏡用外付チューブに関する。 The present invention relates to relates to an endoscopic external tube is detachably attached to the endoscope.

【0002】 [0002]

【従来の技術】一般に、内視鏡の挿入部に必要に応じて着脱可能に取付けられ、処置具の挿入をガイドする内視鏡用外付チューブが例えば、特開平11−192203 In general, detachably mounted as needed to the insertion portion of the endoscope, the endoscope external tube for guiding the insertion of the treatment instrument, for example, JP-A-11-192203
号公報や、実登2558354号公報などに示されている。 JP and are shown like in the real registration 2558354 JP. ここで、特開平11−192203号公報には外付チューブをゴムバンドや、メディカルテープ等で固定したり、リング状の取付け用キャップなどを介して内視鏡の挿入部に取付ける構成が示されている。 Here, in JP-A-11-192203 an external tube and a rubber band, or secured with medical tape or the like, configured to attach to the insertion portion of the endoscope via a ring-shaped mounting cap shown ing. さらに、実登2558354号公報には外付チューブの先端部にシート状の取付け部を設け、この取付け部を両面粘着テープなどによって内視鏡の挿入部に取付ける構成が示されている。 Furthermore, the actual registration 2558354 discloses a sheet-like mounting portion provided at the distal end of the external tube, configured to mount the mounting portion in the insertion portion of the endoscope, such as by double-sided adhesive tape is shown.

【0003】 [0003]

【発明が解決しようとする課題】上記従来構成の外付チューブはゴムバンドや、メディカルテープや、両面粘着テープなどで内視鏡の挿入部に固定したり、取付け用キャップなどを介して内視鏡の挿入部に固定されている。 [0007] external tube of the prior construction and a rubber band, and medical tape, or fixed to the insertion portion of the endoscope in such double-sided adhesive tape, the endoscope via a mounting cap It is fixed to the insertion portion of the mirror.
そのため、内視鏡の挿入部に取付けられた外付チューブを内視鏡の挿入部から取外す場合には一旦、内視鏡を患者の体内から抜去した状態で、体外でゴムバンドや、メディカルテープや、両面粘着テープなどを取外したり、 Therefore, once when removing the external tube attached to the insertion portion of the endoscope from the insertion portion of the endoscope, the endoscope while removed from the patient's body, and rubber bands outside the body, Medical Tape and, or remove the double-sided adhesive tape,
取付け用キャップなどを取外す面倒な作業を行う必要があるので、その作業に時間がかかり、内視鏡に取付けられている外付チューブを手技中に外すことは難かしい問題がある。 Since it is necessary to perform a troublesome work of removing the like mounting cap, it takes time for the task, removing the external tube attached to the endoscope during the procedure is flame Kashii problem.

【0004】また、患者の体内に内視鏡が挿入された状態では外付チューブを通して体内に挿入できる処置具の種類は外付チューブの内径よりも小径なものに制限されるので、外付チューブの内径よりも大径な処置具を使用することができない問題がある。 Further, since a state where the endoscope is inserted into the patient's body type of the treatment instrument that can be inserted into the body through the external tube is restricted to a small-diameter than the internal diameter of the external tube, the external tube there is not possible to use large-diameter treatment instrument than the inner diameter problems. そのため、内視鏡的手技の適用症例が制限される問題がある。 Therefore, there is a problem of application cases of endoscopic procedures are limited.

【0005】なお、大径な処置具を使用するために外付チューブの内径を大きくした場合にはこの外付チューブの外径も大きくなるので、内視鏡の挿入性を低下させる問題がある。 [0005] Incidentally, in the case of increasing the inner diameter of the external tube in order to use the large-diameter treatment instrument also becomes larger outer diameter of the external tube, there is a problem of lowering the insertion of the endoscope .

【0006】本発明は上記事情に着目してなされたもので、その目的は、使用できる処置具の種類を拡大することができ、内視鏡的手技の安全性向上、適用症例の拡大を図ることができる内視鏡用外付チューブを提供することにある。 [0006] The present invention has been made in view of the above circumstances, and its object is able to expand the types of treatment instruments can be used, improving safety of endoscopic procedures, reduce the expansion of the application cases it is to provide an endoscopic external tube capable.

【0007】 [0007]

【課題を解決するための手段】本発明は、内視鏡の挿入部の先端部から基端部側の手元操作部側まで前記内視鏡の挿入部に沿って延設される可撓性チューブによってチューブ本体が形成され、前記内視鏡の挿入部に前記チューブ本体が取り外し可能に取付けられる内視鏡用外付チューブにおいて、前記チューブ本体の先端部を前記内視鏡の挿入部の先端部に係脱可能に係合する係合部と、前記チューブ本体の基端部側の操作によって前記係合部の係合を解除する係合解除手段とを具備することを特徴とする内視鏡用外付チューブである。 Means for Solving the Problems The present invention is flexible extending along the insertion portion of the endoscope from the distal end of the insertion portion of the endoscope to the operation portion side of the base end tube body is formed by a tube, in the tube body tube External endoscopic mounted removably in the insertion portion of the endoscope, the distal end portion of the tube body of the insertion portion of the endoscope tip an engaging portion which detachably engages with the part, an endoscope, characterized by comprising a disengagement means for releasing the engagement of the engaging portion by the proximal end of the operation of the tube body it is out with a tube for a mirror. そして、本発明では、内視鏡の使用時には内視鏡の挿入部の先端部に係合部を係合させ、この状態で、外付チューブのチューブ本体内に処置具を挿通させる。 In the present invention, when using the endoscope engaged with the engagement portion at the distal end of the insertion portion of the endoscope, in this state, inserting the treatment instrument into the tube body of the external tube. また、外付チューブのチューブ本体を内視鏡の挿入部から取外す場合にはチューブ本体の基端部側の係合解除手段の操作によって係合部の係合を解除するようにしたものである。 Moreover, in which so as to disengage the engaging portion by the operation of the disengagement means of the base end portion side of the tube body when removing the tube body of the external tube from the insertion portion of the endoscope .

【0008】 [0008]

【発明の実施の形態】以下、本発明の第1の実施の形態を図1(A)〜(C)乃至図4(A),(B)を参照して説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention FIG. 1 (A) ~ (C) to FIG. 4 (A), described with reference to (B). 図1(A)は本実施の形態の内視鏡用外付チューブ1を取付けた内視鏡2の挿入部3の先端部分、 1 (A) is the tip portion of the insertion portion 3 of the endoscope 2 mounted endoscope External tube 1 of this embodiment,
図1(B)は内視鏡2の挿入部3の基端部に連結された手元操作部4の部分をそれぞれ示すものである。 FIG. 1 (B) shows a portion of the endoscope 2 of the insertion portion operation portion 4 connected to the proximal end of 3, respectively.

【0009】さらに、図1(C)に示すように内視鏡2 Furthermore, the inner as shown in FIG. 1 (C) endoscope 2
の挿入部3の先端面3aには照明レンズが配設された照明窓部5や、対物レンズが配設された観察窓部6や、処置具挿通チャンネル7の先端開口部7aなどが配設されている。 Of and illumination window portion 5 on the distal end surface 3a of the illumination lens is disposed in the insertion portion 3, and the observation window portion 6 on which an objective lens is disposed, and the front end opening portion 7a of the treatment instrument insertion channel 7 is arranged It is.

【0010】また、内視鏡用外付チューブ1は内視鏡2 [0010] In addition, the endoscope for external tube 1 endoscope 2
の挿入部3の先端部から基端部側の手元操作部4側まで内視鏡2の挿入部3に沿って延設される可撓性チューブによってチューブ本体8が形成されている。 Tube body 8 is formed by a flexible tube along the insertion portion 3 of the endoscope 2 is extended from the distal end of the insertion portion 3 to the operation portion 4 side of the base end of the. さらに、この内視鏡用外付チューブ1には内視鏡2の挿入部3の先端部に取付けられるチューブ固定リング(係合部)9が設けられている。 Further, tube fixing ring (engaging portion) 9 mounted to the distal end of the insertion portion 3 of the endoscope 2 is provided in the endoscope External tube 1. このチューブ固定リング9は例えば摩擦による固定、接着などの手段で挿入部3の先端部外周面に固定されている。 The tube fixing ring 9 is fixed to the distal end outer peripheral surface of the insertion portion 3 by means such as fixing, bonding by e.g. friction. また、挿入部3の一部がチューブ固定リング9を兼用しても良い。 A part of the insertion section 3 may be shared with the tube fixing ring 9.

【0011】このチューブ固定リング9には図1(C) [0011] Figure 1 is the tube fixing ring 9 (C)
に示すように周方向の一部に外向きに突設された突設部10が形成されている。 Projecting portion 10 which projects outwardly is formed on a part of the circumferential direction as shown in. この突設部10には外付チューブ1の係合溝11が形成されている。 Engaging groove 11 of the external tube 1 is formed in the projecting portion 10. この係合溝11は外付チューブ1のチューブ本体8の断面形状と略対応する形状に形成されている。 The engaging groove 11 is formed in a sectional shape substantially corresponding shape of the external tube 1 of the tube body 8. ここで、係合溝11の開口端部には外付チューブ1の直径よりも溝幅が狭い外付チューブ1の抜け防止部12が形成されている。 Here, the open end of the engaging groove 11 slip prevention part 12 of the groove width than the diameter of the external tube 1 is small external tube 1 is formed. そして、外付チューブ1のチューブ本体8はこの係合溝11に挿入された状態で、摩擦力によって係脱可能に係合されるようになっている。 Then, the tube body 8 of the external tube 1 is in a state of being inserted into the engaging groove 11 is adapted to be detachably latched by a frictional force. この係合時には係合溝11の抜け防止部12によって外付チューブ1のチューブ本体8が係合溝11の開口端部から外部側に抜け落ちることが防止されている。 This is when engaged tube body 8 of the external tube 1 is prevented from falling out to the outer side from the open end portion of the engaging groove 11 by the detachment prevention portions 12 of the engaging groove 11.

【0012】また、外付チューブ1のチューブ本体8の基端部には大径な把持用の把持部(係合解除手段)13 Further, the grip portion for large diameter gripping the proximal end portion of the external tube 1 of the tube main body 8 (disengaging means) 13
が形成されている。 There has been formed. この把持部13の末端部には細径の処置具、或いはガイドワイヤー14などを導入するための口金部15が配設されている。 The small diameter of the treatment instrument to the distal end of the grip portion 13, or the base part 15 for introducing and guide wire 14 is disposed.

【0013】次に、上記構成の本実施の形態の内視鏡用外付チューブ1の作用について説明する。 [0013] Next, a description will be given of the operation of the endoscope External tube 1 of this embodiment having the above structure. 内視鏡下手術で、内視鏡2の挿入部3に本実施の形態の内視鏡用外付チューブ1を装着して使用する場合には、例えば、患者の体外で予め外付チューブ1のチューブ本体8内にガイドワイヤー14が挿入された状態にセットされる。 In endoscopic surgery, when used by mounting the endoscope External tube 1 of this embodiment is the insertion portion 3 of the endoscope 2, for example, advance the external tube 1 outside the patient's body guide wire 14 is set to a state of being inserted into the tube body 8.

【0014】その後、内視鏡2の挿入部3の先端部に固定されたチューブ固定リング9の係合溝11に予め外付チューブ1のチューブ本体8の先端部を挿入する状態で係合させる。 [0014] Thereafter, engaged in a state of inserting the tip of the endoscope 2 of the insertion portion in advance of the external tube 1 into the engaging groove 11 of the tube fixing ring 9 fixed to the distal end of the third tube body 8 . これにより、図1(A),(B)に示すように内視鏡2の挿入部3の先端部から基端部側の手元操作部4側まで挿入部3に沿って外付チューブ1のチューブ本体8が延設された状態にセットされる。 Thus, FIG. 1 (A), (B) to the insertion portion 3 of the endoscope 2 as shown from the distal end of the external tube 1 along the insertion portion 3 to the operation portion 4 side of the base end It is set to a state in which the tube body 8 is extended.

【0015】この状態で、内視鏡2の挿入部3が患者の体腔内に挿入される。 [0015] In this state, the insertion portion 3 of the endoscope 2 is inserted into a body cavity of a patient. そして、患者の体腔内の目的の場所に内視鏡2の挿入部3が挿入された後、必要に応じて外付チューブ1の内部に外付チューブ1の内径よりも細径の処置具が挿入される。 After the insertion portion 3 of the endoscope 2 is inserted into the desired location in the body cavity of a patient, a small diameter of the treatment instrument than the inner diameter of the external tube 1 inside the external tube 1 as needed It is inserted. このとき、外付チューブ1の内部に挿入される処置具はチューブ本体8内のガイドワイヤー14にガイドされた状態で体内に挿入される。 At this time, the treatment instrument is inserted into the external tube 1 is inserted into the body in a state of being guided by the guide wire 14 in the tube body 8.

【0016】また、図3(B)に示すように体腔内に外付チューブ1の内径よりも太い他の処置具、例えばバルーンダイレーター16を挿入する場合には外付チューブ1を内視鏡2の挿入部3から取外してバルーンダイレーター16を体内に挿入する処置具の交換作業が行われる。 Further, an endoscope external tube 1 in the case of inserting the external thick other treatment instruments than the inner diameter of the tube 1, for example, a balloon dilator 16 into the body cavity, as shown in FIG. 3 (B) replacement of removed from the second insertion part 3 treatment instrument inserting a balloon dilator 16 into the body is performed. この交換作業時にはガイドワイヤー14が使用され、次の通り行われる。 During this replacement guidewire 14 is used, it is carried out as follows.

【0017】まず、外付チューブ1のチューブ本体8の基端部の把持部13が把持された状態で、チューブ本体8が手元側に引っ張り操作される。 [0017] First, in a state where the grip portion 13 of the base end portion of the tube body 8 of the external tube 1 is gripped, the tube body 8 is operated pulling proximally. この操作力によって図2(A)に示すようにチューブ固定リング9の係合溝11から外付チューブ1のチューブ本体8が手元側に引き抜かれ、内視鏡2の挿入部3と外付チューブ1との係合が解除される。 Tube body 8 in FIG. 2 external tube 1 from the engaging groove 11 of the tube fixing ring 9 as shown in (A) by this operation force is withdrawn proximally, the insertion portion 3 of the endoscope 2 and the external tube engagement between 1 is released. この状態で、ガイドワイヤー14はそのまま残し、続いてこのガイドワイヤー14にガイドされた状態で外付チューブ1のみを体外に取出す作業が行われる。 In this state, the guide wire 14 is left as it is, followed by work to take out only the external tube 1 while being guided by the guide wire 14 outside the body is performed.

【0018】さらに、図3(B)に示すように外付チューブ1の取り出し後、図4(B)に示すようにガイドワイヤー14をガイドにして別の処置具、例えばバルーンダイレーター16が体腔内に挿入される。 Furthermore, after removal of the external tube 1 as shown in FIG. 3 (B), another treatment tool with the guide wire 14 as shown in FIG. 4 (B) to guide, for example, a balloon dilator 16 cavity It is inserted within. このとき、例えば内視鏡2の処置具挿通チャンネル7を通して体内に挿入される把持鉗子などによって内視鏡2の観察下でガイドワイヤー14の先端部を把持した状態で外付チューブ1とバルーンダイレーター16との交換作業が行われる。 In this case, for example, the endoscope 2 of the treatment instrument insertion channel 7 external tube 1 and the balloon die while holding the distal portion of the guide wire 14 under observation endoscope 2, such as by grasping forceps which is inserted into the body through replacement of the aerator 16 is performed. なお、必ずしもガイドワイヤー14の先端部を把持鉗子などによって把持する必要はない。 It is not always necessary to grip the leading end portion of the guide wire 14, such as by grasping forceps. 例えば、外付チューブ1の長さの2倍程度の長さのガイドワイヤー14 For example, about twice the length of the external tube 1 length of the guide wire 14
を使用することにより、ガイドワイヤー14の手元側を把持した状態で外付チューブ1とバルーンダイレーター16との交換作業を行なうことができる。 The Using can perform replacement of the external tube 1 and the balloon dilator 16 while holding the proximal side of the guidewire 14.

【0019】そこで、上記構成のものにあっては次の効果を奏する。 [0019] Thus, the apparatus having the configuration described above produces the following effects. すなわち、本実施の形態の内視鏡用外付チューブ1では内視鏡2の挿入部3の先端部外周面に固定されるチューブ固定リング9に外付チューブ1の係合溝11を形成し、外付チューブ1のチューブ本体8をこの係合溝11に係脱可能に係合させるとともに、外付チューブ1のチューブ本体8の基端部の把持部13を把持させた状態で、チューブ本体8を手元側に引っ張り操作させ、この操作力によってチューブ固定リング9の係合溝11から外付チューブ1のチューブ本体8を手元側に引き抜いて内視鏡2の挿入部3と外付チューブ1との係合を解除させるようにしている。 That is, the engaging groove 11 of the external tube 1 is formed into a tube fixing ring 9 which is fixed to the distal end outer peripheral surface of the insertion portion 3 of the endoscope external tube 1, the endoscope 2 of the present embodiment the tube body 8 of the external tube 1 together with the engaged disengageably engaged in the engaging groove 11, while being gripped the grip portion 13 of the base end portion of the tube body 8 of the external tube 1, the tube body 8 was pulling operation proximally, of the insertion portion 3 and the external tube 1 the endoscope 2 is withdrawn from the engaging groove 11 of the tube fixing ring 9 by this operation force the tube body 8 of the external tube 1 proximally and so as to release the engagement with the. そのため、本実施の形態の内視鏡用外付チューブ1では内視鏡2の挿入部3を患者の体内から抜去することなく、患者の体内で内視鏡2 Therefore, the insertion portion 3 of the endoscope inside the external tube 1 for mirror endoscope 2 of the present embodiment without removal from the patient's body, the endoscope 2 inside the patient
の挿入部3から外付チューブ1を取外す作業を行うことができるので、従来に比べて簡単に内視鏡2の挿入部3 Since the insertion portion 3 can perform the task of removing the external tube 1, the insertion portion 3 of the endoscope 2 easily as compared with the conventional
から外付チューブ1を取外す作業を行うことができる。 It is possible to perform the work to remove the external tube 1 from.

【0020】さらに、本実施の形態では体腔内に外付チューブ1の内径よりも太い他の処置具、例えばバルーンダイレーター16を挿入する場合には患者の体内で外付チューブ1を内視鏡2の挿入部3から取外してバルーンダイレーター16を体内に挿入する処置具の交換作業を行うことができるので、内視鏡下手術で、使用できる処置具が外付チューブ1の内径に制限されることなく、太い処置具も使用することができる。 Furthermore, the endoscope external tube 1 in the body of the patient in the case in the present embodiment to insert another treatment instrument thicker than the inner diameter of the external tube 1 into a body cavity, for example, a balloon dilator 16 since the balloon dilator 16 is removed from the insertion portion 3 of 2 can be performed replacing the treatment instrument to be inserted into the body, in endoscopic surgery, a treatment instrument that can be used is limited to the inner diameter of the external tube 1 without Rukoto, it can also be used thick treatment instrument. そのため、内視鏡的手技の適用症例を増やすことができる効果がある。 Therefore, there is an effect that can increase the application cases of endoscopic procedures.

【0021】また、外付チューブ1はガイドワイヤー1 [0021] In addition, the external tube 1 the guide wire 1
4を挿入できる内径を有していれば良いので、外付チューブ1の外径を小さくでき、よって内視鏡2の挿入性・ Since 4 may have a inner diameter can be inserted, can reduce the outer diameter of the external tube 1, the endoscope 2 Therefore insertability,
操作性を低下させることがない。 It does not lower the usability. そのため、従来、X線下、もしくは盲目的に行っていた手技、例えばアカラジア(achalasia)のバルーン拡張例等が内視鏡2の直視下で行えるようになり、よって、安全性が向上する。 Therefore, conventionally, under X-ray, or procedure has been performed blindly, for example, to allow a balloon expansion of such under direct vision of the endoscope 2 is Akarajia (achalasia), thus, safety is improved.

【0022】また、図5は本発明の第2の実施の形態を示すものである。 Further, FIG. 5 shows a second embodiment of the present invention. 本実施の形態は内視鏡2の挿入部3の外周面に外付チューブ1の装着溝21を設け、この装着溝21に第1の実施の形態(図1(A)〜(C)乃至図4(A),(B)参照)の内視鏡用外付チューブ1を収容する構成に変更したものである。 This embodiment of the mounting groove 21 of the external tube 1 is provided on the outer peripheral surface of the insertion portion 3 the endoscope 2, the first embodiment in the mounting groove 21 (FIG. 1 (A) ~ (C) to FIG. 4 (a), the is replaced by a structure that houses the endoscope External tube 1 (B) refer). この挿入部3の外周面の装着溝21は外付チューブ1全体が収容できる程度の大きさに形成されている。 The mounting groove 21 of the outer peripheral surface of the insertion portion 3 is formed to an extent that the entire external tube 1 can accommodate size.

【0023】また、内視鏡2の挿入部3の先端部には挿入部3の装着溝21に収容された外付チューブ1を係脱可能に係合するチューブ固定リング(係合部)22が設けられている。 Further, the endoscope 2 of the insertion portion 3 of the tip is a tube locking ring which engage the external tube 1 housed detachably in the mounting groove 21 of the insertion portion 3 (the engaging portion) 22 It is provided. そして、このチューブ固定リング22と挿入部3の装着溝21との間で外付チューブ1を挟持することにより、外付チューブ1を係脱可能に係合するようになっている。 By sandwiching the external tube 1 between the mounting groove 21 of the insertion portion 3 and the tube fixing ring 22 so as to engage the external tube 1 detachably.

【0024】そこで、上記構成のものにあっては次の効果を奏する。 [0024] Thus, the apparatus having the configuration described above produces the following effects. すなわち、本実施の形態では内視鏡2の挿入部3の外周面に外付チューブ1の装着溝21を設け、 That is, the mounting groove 21 of the external tube 1 is provided on the outer peripheral surface of the insertion portion 3 of the endoscope 2 in this embodiment,
この装着溝21に第1の実施の形態の内視鏡用外付チューブ1を収容するとともに、内視鏡2の挿入部3の先端部にチューブ固定リング22を設け、このチューブ固定リング22と挿入部3の装着溝21との間で外付チューブ1を挟持することにより、外付チューブ1を係脱可能に係合するようにしている。 Accommodates an endoscope External tube 1 in the form of the mounting groove 21 in the first embodiment, the tube fixing ring 22 provided at the distal end of the insertion section 3 of the endoscope 2, and the tube fixing ring 22 by sandwiching the external tube 1 between the mounting groove 21 of the insertion portion 3, and adapted to engage the external tube 1 detachably. そして、外付チューブ1のチューブ本体8の基端部の把持部13を把持させた状態で、チューブ本体8を手元側に引っ張り操作させ、この操作力によってチューブ固定リング22と挿入部3の装着溝21との間から外付チューブ1のチューブ本体8を手元側に引き抜いて内視鏡2の挿入部3と外付チューブ1との係合を解除させるようにしている。 Then, in a state of being gripped the grip portion 13 of the base end portion of the external tube 1 of the tube body 8, a tube body 8 is pulling operation proximally, mounting the tube fixing ring 22 of the insertion portion 3 by this operation force and so as to release the engagement of the insertion portion 3 of the endoscope 2 to the tube body 8 of the external tube 1 is withdrawn proximally and external tube 1 from between the grooves 21. そのため、本実施の形態の内視鏡用外付チューブ1でも第1の実施の形態と同様に内視鏡2の挿入部3を患者の体内から抜去することなく、患者の体内で内視鏡2の挿入部3から外付チューブ1を取外す作業を行うことができるので、従来に比べて簡単に内視鏡2の挿入部3から外付チューブ1を取外す作業を行うことができる。 Therefore, without the insertion portion 3 of the first embodiment even endoscope External tube 1 of this embodiment likewise the endoscope 2 is pulled out from the body of the patient, the endoscope within the patient since two of the insertion portion 3 can perform the task of removing the external tube 1, it is possible to perform the task of removing the external tube 1 easily from the insertion portion 3 of the endoscope 2 as compared with the prior art.

【0025】さらに、本実施の形態でも体腔内に外付チューブ1の内径よりも太い他の処置具、例えばバルーンダイレーター16を挿入する場合には外付チューブ1に挿入されたガイドワイヤー14をガイドにして患者の体内で外付チューブ1を内視鏡2の挿入部3から取外してバルーンダイレーター16を体内に挿入する処置具の交換作業を行うことができるので、内視鏡下手術で、使用できる処置具が外付チューブ1の内径に制限されることなく、太い処置具も使用することができる。 Furthermore, other treatment instrument thicker than the inner diameter of the external tube 1 into a body cavity in this embodiment, for example, the guide wire 14 inserted into the external tube 1 in the case of inserting a balloon dilator 16 since in the guide can be performed replacing the treatment instrument inserting a balloon dilator 16 into the body to remove the external tube 1 from the insertion portion 3 of the endoscope 2 inside the patient, in endoscopic surgery can treatment tool that can be used without being limited to the inner diameter of the external tube 1, also used a thick treatment instrument. そのため、 for that reason,
内視鏡的手技の適用症例を増やすことができる効果がある。 There is an effect that can increase the application cases of endoscopic procedures.

【0026】また、本実施の形態の外付チューブ1は内視鏡2の挿入部3の外周面に形成された装着溝21に収容されているので、内視鏡2の挿入部3の外側に外付チューブ1が突出されることがない。 Further, since the external tube 1 of this embodiment is housed in the endoscope 2 of the mounting groove 21 formed on the outer peripheral surface of the insertion portion 3, outside of the insertion portion 3 of the endoscope 2 It is never protrude external tube 1. そのため、内視鏡2 Therefore, the endoscope 2
の挿入部3の外側に外付チューブ1を装着した状態で内視鏡2の挿入部3を体腔内に挿入する作業性の向上を図ることができる。 Of the insertion portion 3 of the endoscope 2 in a state of mounting the external tube 1 outside of the insertion portion 3 can be improved workability of inserting into a body cavity.

【0027】また、図6(A),(B)および図7は本発明の第3の実施の形態を示すものである。 Further, FIG. 6 (A), the show a third embodiment of (B) and 7 present invention. 本実施の形態は第1の実施の形態(図1(A)〜(C)乃至図4 This embodiment first embodiment (FIG. 1 (A) ~ (C) to 4
(A),(B)参照)の内視鏡用外付チューブ1の構成を次の通り変更したものである。 (A), it is modified as constituting the following endoscopic External tube 1 (B) refer).

【0028】すなわち、本実施の形態では外付チューブ1の先端部外周面に係合凸部31が突設されている。 [0028] That is, in this embodiment the engaging projections 31 are protruded from the distal end portion outer peripheral surface of the external tube 1. この係合凸部31には図6(A)に示すように外付チューブ1の外周面との接合部から離れるにしたがって幅広になる略三角形状の脚部32が形成されている。 Substantially triangular legs 32 become wider with distance from the junction between the external peripheral surface of the tube 1 as shown in FIG. 6 (A) is formed in the engaging portion 31.

【0029】また、内視鏡2の挿入部3の先端部に取付けられるチューブ固定リング33には外付チューブ1の係合凸部31と対応する形状の係合凹部34が形成されている。 Further, the tube fixing ring 33 attached to the distal end of the insertion portion 3 of the endoscope 2 engages the recess 34 of the shape corresponding to the engaging projection 31 of the external tube 1 is formed. そして、本実施の形態の外付チューブ1のチューブ本体8は図6(A),(B)に示すように係合凸部31がチューブ固定リング33の係合凹部34に挿入された状態で、摩擦力によって係脱可能に係合されるようになっている。 Then, the tube body 8 of the external tube 1 of the present embodiment FIG. 6 (A), in a state in which the engaging projection 31 as shown in (B) is inserted into the engaging recess 34 of the tube fixing ring 33 It is adapted to be detachably latched by a frictional force.

【0030】また、外付チューブ1のチューブ本体8の基端部の把持部13を把持した状態で、チューブ本体8 Further, while holding the grip portion 13 of the base end portion of the tube body 8 of the external tube 1, the tube body 8
を手元側に引っ張り操作することにより、このときの操作力によって図7に示すようにチューブ固定リング33 By operating the pulling proximally the tube fixing ring 33 as shown in FIG. 7 by the operation force at this time
の係合凹部34から外付チューブ1の係合凸部31が手元側に引き抜かれ、内視鏡2の挿入部3と外付チューブ1との係合が解除されるようになっている。 Engaging projection 31 of the external tube 1 from the engagement recess 34 of pulled proximally, the engagement of the insertion portion 3 and the external tube 1 of the endoscope 2 is adapted to be released.

【0031】そこで、上記構成のものにあっては次の効果を奏する。 [0031] Thus, the apparatus having the configuration described above produces the following effects. すなわち、本実施の形態では外付チューブ1の先端部外周面に係合凸部31を突設し、内視鏡2の挿入部3の先端部に取付けられるチューブ固定リング3 Namely, in the present embodiment projecting an engaging projection 31 on the distal end outer peripheral surface of the external tube 1, the tube locking ring 3 attached to the distal end of the insertion portion 3 of the endoscope 2
3の係合凹部34に外付チューブ1の係合凸部31を挿入させた状態で、摩擦力によって係脱可能に係合させるとともに、外付チューブ1のチューブ本体8の基端部の把持部13を把持した状態で、チューブ本体8を手元側に引っ張り操作することにより、このときの操作力によってチューブ固定リング33の係合凹部34から外付チューブ1の係合凸部31を手元側に引き抜いて内視鏡2 In a state where the third engaging recess 34 is inserted a engaging projection 31 of the external tube 1, causes disengageably engaged by a frictional force, the grip of the proximal end of the external tube 1 of the tube body 8 while gripping the part 13, by operating to pull the tube body 8 proximally, proximal the engaging projection 31 of the external tube 1 from the engagement recess 34 of the tube fixing ring 33 by the operation force at this time pull out the endoscope 2
の挿入部3と外付チューブ1との係合を解除させるようにしている。 It is the engagement of the insertion portion 3 and the external tube 1 so as to cancel. そのため、本実施の形態でも第1の実施の形態と同様に内視鏡2の挿入部3を患者の体内から抜去することなく、患者の体内で内視鏡2の挿入部3から外付チューブ1を取外す作業を行うことができるので、従来に比べて簡単に内視鏡2の挿入部3から外付チューブ1を取外す作業を行うことができる。 Therefore, without the insertion portion 3 of the present embodiment also in the first embodiment similarly endoscope 2 is pulled out from the patient's body, the tube external from the insertion portion 3 of the endoscope 2 inside the patient it is possible to perform the work of removing the 1, it is possible to perform the work of removing the external tube 1 easily from the insertion portion 3 of the endoscope 2 as compared with the prior art.

【0032】さらに、本実施の形態でも体腔内に外付チューブ1の内径よりも太い他の処置具、例えばバルーンダイレーター16を挿入する場合には患者の体内で外付チューブ1を内視鏡2の挿入部3から取外してバルーンダイレーター16を体内に挿入する処置具の交換作業を行うことができるので、内視鏡下手術で、使用できる処置具が外付チューブ1の内径に制限されることなく、太い処置具も使用することができる。 Furthermore, thick other treatment instruments than the inner diameter of the external tube 1 into a body cavity in the present embodiment, for example, an endoscope external tube 1 in the body of the patient to insert the balloon dilator 16 since the balloon dilator 16 is removed from the insertion portion 3 of 2 can be performed replacing the treatment instrument to be inserted into the body, in endoscopic surgery, a treatment instrument that can be used is limited to the inner diameter of the external tube 1 without Rukoto, it can also be used thick treatment instrument. そのため、内視鏡的手技の適用症例を増やすことができる効果がある。 Therefore, there is an effect that can increase the application cases of endoscopic procedures.

【0033】また、図8(A),(B)乃至図10は本発明の第4の実施の形態を示すものである。 Further, FIG. 8 (A), the show a fourth embodiment of (B) through 10 present invention. 本実施の形態は第1の実施の形態(図1(A)〜(C)乃至図4 This embodiment first embodiment (FIG. 1 (A) ~ (C) to 4
(A),(B)参照)の内視鏡用外付チューブ1の構成を次の通り変更したものである。 (A), it is modified as constituting the following endoscopic External tube 1 (B) refer).

【0034】すなわち、本実施の形態では図8(A), [0034] That is, in this embodiment FIG. 8 (A), the
(B)に示すように1つのチューブ壁41内に軸方向に延設された2つのルーメン(貫通穴)42,43が形成されている2ルーメンチューブ44によって内視鏡用外付チューブ1が形成されている。 Endoscope External tube 1 by one of the two lumens that extend axially in the tube wall 41 (through-holes) 2 and 43 are formed lumen tube 44 as shown in (B) It is formed. また、2ルーメンチューブ44の一方のルーメン42内には小径な処置具、或いはガイドワイヤー14などが挿入されるようになっている。 Moreover, in one of the lumens 42 of the second lumen tube 44 so that the small-diameter treatment instrument, or a guide wire 14 is inserted. さらに、2ルーメンチューブ44の他方のルーメン43内には固定用の操作ワイヤ45が挿通されている。 Further, operation wires 45 for fixing is inserted through the other lumen 43 of the second lumen tube 44.

【0035】この操作ワイヤ45の先端部にはループ状の係合部46が形成されている。 The loop-like engaging portion 46 is formed at the distal end of the operating wire 45. この係合部46は内視鏡2の挿入部3の先端部の外径寸法よりも大径に形成されている。 The engaging portion 46 has a larger diameter than the outer diameter of the distal end of the insertion section 3 of the endoscope 2. そして、本実施の形態の内視鏡用外付チューブ1の使用時には手元側から操作ワイヤ45を押出操作することにより、図9に示すように2ルーメンチューブ44のルーメン43内から操作ワイヤ45の先端部の係合部46を突出させる。 By the use of the endoscope External tube 1 of this embodiment is the extrusion operating the operation wire 45 from the proximal side, as shown in FIG. 9 from within lumen 43 of second lumen tube 44 of the operating wire 45 projecting the engaging portion 46 of the tip. その後、操作ワイヤ45の係合部46のループ内に内視鏡2の挿入部3の先端部を挿入させるとともに、この状態で操作ワイヤ45を手元側に引っ張り操作することにより、操作ワイヤ45の係合部46のループ径を絞り、図8(A),(B)に示すように内視鏡2の挿入部3の先端部を操作ワイヤ45の係合部46のループ内に囲む状態で、摩擦力によって係脱可能に係合させるようになっている。 Thereafter, the inserting the distal end of the insertion portion 3 of the endoscope 2 inside the loop of the engaging portion 46 of the operating wire 45 by operating to pull the operating wire 45 proximally in this state, the operation wire 45 stop loop diameter of the engagement portion 46, FIG. 8 (a), the state surrounding the loop of the engaging portion 46 of the operation the distal end of the insertion portion 3 of the endoscope 2 wire 45 as shown in (B) and it is adapted to disengageably engaged by a frictional force.

【0036】また、手元側から操作ワイヤ45を押出操作することにより、操作ワイヤ45の係合部46のループ径を広げて内視鏡2の挿入部3と外付チューブ1との係合が解除されるようになっている。 Further, by extrusion operating the operation wire 45 from the proximal side, the engagement of the insertion portion 3 and the external tube 1 of the endoscope 2 to expand the loop diameter of the engagement portion 46 of the operating wire 45 It is adapted to be released.

【0037】そこで、上記構成のものにあっては次の効果を奏する。 [0037] Thus, the apparatus having the configuration described above produces the following effects. すなわち、本実施の形態では2ルーメンチューブ44のルーメン43内に固定用の操作ワイヤ45 That is, the operation wire 45 for fixation within the lumen 43 of the second lumen tube 44 in this embodiment
を挿通させ、この操作ワイヤ45の先端部に形成された係合部46のループ内に内視鏡2の挿入部3の先端部を挿入させた状態で操作ワイヤ45の係合部46のループ径を絞り、図8(A),(B)に示すように内視鏡2の挿入部3の先端部を操作ワイヤ45の係合部46のループ内に囲む状態で、摩擦力によって係脱可能に係合させるようにしたものである。 It was inserted, the loop engaging portion 46 of the operating wire 45 the endoscope 2 of the insertion portion 3 of the tip portion manipulating wires 45 in a state of being inserted in-loop of the formed engaging portions 46 to the distal end of the aperture diameter, FIG. 8 (a), the state surrounding the loop of the engaging portion 46 of the operation the distal end of the insertion portion 3 of the endoscope 2 wire 45 (B), the engagement and disengagement by a frictional force capable is obtained so as to engage. そして、手元側から操作ワイヤ45を押出操作することにより、操作ワイヤ45の係合部46のループ径を広げて内視鏡2の挿入部3と外付チューブ1との係合を解除することができるので、本実施の形態でも第1の実施の形態と同様に内視鏡2の挿入部3を患者の体内から抜去することなく、患者の体内で内視鏡2の挿入部3から外付チューブ1を取外す作業を行うことができる。 Then, by extrusion operating the operation wire 45 from the proximal side, to release the engagement between the insertion portion 3 and the external tube 1 of the endoscope 2 to expand the loop diameter of the engagement portion 46 of the operating wire 45 since it is, without the first insertion portion 3 of the embodiment similarly endoscope 2 of the present embodiment also be withdrawn from the patient's body, out of the insertion portion 3 of the endoscope 2 inside the patient it is possible to carry out the task of removing the attached tube 1. そのため、従来に比べて簡単に内視鏡2の挿入部3から外付チューブ1を取外す作業を行うことができる。 Therefore, it is possible to perform the work of removing the external tube 1 easily from the insertion portion 3 of the endoscope 2 as compared with the prior art.

【0038】さらに、本実施の形態でも体腔内に外付チューブ1の内径よりも太い他の処置具、例えばバルーンダイレーター16を挿入する場合には患者の体内で外付チューブ1を内視鏡2の挿入部3から取外してバルーンダイレーター16を体内に挿入する処置具の交換作業を行うことができるので、内視鏡下手術で、使用できる処置具が外付チューブ1の内径に制限されることなく、太い処置具も使用することができる。 [0038] Further, the thick other treatment instruments than the inner diameter of the external tube 1 into a body cavity in the present embodiment, for example, an endoscope external tube 1 in the body of the patient to insert the balloon dilator 16 since the balloon dilator 16 is removed from the insertion portion 3 of 2 can be performed replacing the treatment instrument to be inserted into the body, in endoscopic surgery, a treatment instrument that can be used is limited to the inner diameter of the external tube 1 without Rukoto, it can also be used thick treatment instrument. そのため、内視鏡的手技の適用症例を増やすことができる効果がある。 Therefore, there is an effect that can increase the application cases of endoscopic procedures.

【0039】なお、内視鏡2の挿入部3の先端部に操作ワイヤ45の係合部46のループを引っ掛ける例えばフック状の引っ掛け部を設け、この引っ掛け部に操作ワイヤ45の係合部46のループを引っ掛ける構成にしても良い。 It should be noted, the endoscope hooked second loop engaging portion 46 of the insertion portion 3 of the tip portion to the operation wire 45 for instance is provided a hook-shaped hook portion, the engaging portion 46 of the operation wire 45 to the hook portion it may be configured to hook the loop.

【0040】さらに、本発明は上記実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々変形実施できることは勿論である。 [0040] Further, the present invention is not limited to the above embodiments, it is needless to say that various modifications may be implemented without departing from the scope of the present invention. 次に、本出願の他の特徴的な技術事項を下記の通り付記する。 Next, other characteristic technical items of the present application is appended as follows. 記 (付記項1) 内視鏡に取付けられる外付チューブにおいて、少なくとも一つ以上の内腔で、近位端、遠位端とを有した可撓性チューブと、可撓性チューブを内視鏡の遠位外周に固定する固定部とを有し、固定部は可撓性チューブの近位部の操作のみで取り外しが可能なことを特徴とする内視鏡用外付チューブ。 Serial in external tube attached to (Note 1) endoscope, at least one lumen, the endoscope proximal end, a flexible tube having a distal end, a flexible tube and a fixing portion for fixing the distal perimeter of the mirror, the fixed portion endoscopic external tube, characterized in that a removable only by operating the proximal portion of the flexible tube.

【0041】(付記項2) スコープの外周に取付けられるチューブにおいて、必要に応じて(例えば手技中において)チューブを取外すことが可能な構造を有した内視鏡用外付チューブ機構。 [0041] (Note 2) In a tube attached to the outer periphery of the scope, if necessary (e.g. during the procedure) endoscopic external tube mechanism having a structure capable of removing the tube.

【0042】(付記項1、2の従来技術) 従来の外付チャンネルはメディカルテープ等で固定されている。 [0042] Conventional external channel (prior art according to Note 1, 2) are fixed in medical tape. 外付チャンネルを外すにはスコープを患者から抜去しなければならなかった。 The scope is to remove the external channel had to be removed from the patient. また、使える処置具も外付チャンネルの内径に依存され、内径を大きくすると外付チャンネル外径も大きくなり、スコープの挿入性を低下させていた。 Also, use the treatment instrument is dependent on the inside diameter of the external channels, large external channels outside diameter when the inner diameter is also increased, which decreases the insertion of the scope.

【0043】(付記項1、2が解決しようとする課題) [0043] (challenges Additional Item 1 and 2 to be Solved)
従来内視鏡に取付けるいわゆる「外付チャンネル」 The so-called "external channel" to be attached to the conventional endoscope
は、手技中に外付チャンネルを外すことができなかった。 Was not able to remove the external channel during the procedure. よって、使える処置具は、外付チャンネルの内径に依存されていた。 It can therefore be used treatment instrument, it had been dependent on the inner diameter of the external channel. また、内径を大きくするとスコープの挿入性が悪くなった。 Further, the scope of insertability worsens by increasing the inner diameter.

【0044】(付記項1、2の目的) 使用できる処置具の拡大を内視鏡的手技の安全性向上、適用症例の拡大。 The safety of endoscopic procedures the expansion of the treatment instrument that can be used (purpose of Additional Item 1) improve, expand the application cases.

【0045】(付記項1、2の効果) 使用できる処置具が外付チャンネルの内径に依存されない(太い処置具も使える。)外付チャンネルはガイドワイヤーを挿入できる内径を有していれば良いので、チャンネル外径を小さくでき、よってスコープの挿入性・操作性を低下させることがない。 [0045] (Effect of Additional Item 1, 2) can be used the treatment instrument is not dependent on the inner diameter of the external channel (thick treatment instrument can also be used.) External channels only to have an inner diameter that can be inserted a guide wire since, it is possible to reduce the channel outside diameter, therefore it does not reduce the scope of the insert and operability. 従来、X線下、もしくは盲目的に行っていた手技、例えばアカラジアのバルーン拡張例等が直視下で行えるようになり、よって、安全性が向上する。 Conventionally, under X-ray, or procedure has been performed blindly, you should be able example balloon expandable examples etc. Akarajia is under direct vision, thus, safety is improved.

【0046】 [0046]

【発明の効果】本発明によれば、チューブ本体の先端部を内視鏡の挿入部の先端部に係脱可能に係合する係合部と、チューブ本体の基端部側の操作によって係合部の係合を解除する係合解除手段とを設けたので、使用できる処置具の種類を拡大することができ、内視鏡的手技の安全性向上、適用症例の拡大を図ることができる。 According to the present invention, an engaging portion which detachably engages with the distal end of the insertion section of the endoscope distal end portion of the tube body, engaging the proximal end of the operation of the tube body since there is provided a disengagement means for disengaging the engagement portion, it is possible to expand the types of treatment instruments can be used, improving safety of endoscopic procedures, it is possible to expand the application cases .

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

【図1】 本発明の第1の実施の形態を示すもので、 [1] shows a first embodiment of the present invention,
(A)は内視鏡用外付チューブを取付けた内視鏡の挿入部の先端部分を示す斜視図、(B)は内視鏡の挿入部の基端部に連結された手元操作部の部分を示す側面図、 (A) is a perspective view of the distal portion of the insertion portion of the endoscope is attached to the endoscope external tube, (B) the endoscope operation portion of which is connected to the proximal end of the insertion portion of the side view of a portion,
(C)は内視鏡の挿入部の先端面を示す正面図。 (C) a front view of the distal surface of the insertion portion of the endoscope.

【図2】 第1の実施の形態の内視鏡用外付チューブをチューブ固定リングから取外す作業を説明するもので、 [Figure 2] in which the first embodiment for an endoscope external tube illustrating the operation of removing the tube fixing ring,
(A)は内視鏡の挿入部の先端部分を示す斜視図、 (A) is a perspective view of the distal portion of the insertion portion of the endoscope,
(B)は内視鏡の手元操作部の部分を示す側面図。 (B) is a side view showing a portion of the operation portion of the endoscope.

【図3】 第1の実施の形態の内視鏡用外付チューブを内視鏡から取外してガイドワイヤのみが残された状態を示すもので、(A)は内視鏡の挿入部の先端部分を示す斜視図、(B)は内視鏡の手元操作部の部分を示す側面図。 [Figure 3] shows a state where the endoscope mirror for external tubing only the guide wire is removed from the endoscope is left in the first embodiment, (A) the tip of the insertion portion of the endoscope perspective view of a portion, (B) is a side view showing a portion of the operation portion of the endoscope.

【図4】 第1の実施の形態の内視鏡用外付チューブに代えて他の処置具を挿入する作業を説明するもので、 [4] in which instead of the first embodiment for an endoscope external tube illustrating the operation of inserting the other treatment instrument,
(A)は内視鏡の挿入部の先端部分を示す斜視図、 (A) is a perspective view of the distal portion of the insertion portion of the endoscope,
(B)は内視鏡の手元操作部の部分を示す側面図。 (B) is a side view showing a portion of the operation portion of the endoscope.

【図5】 本発明の第2の実施の形態を示す要部の縦断面図。 Figure 5 is a longitudinal sectional view of a main part showing a second embodiment of the present invention.

【図6】 本発明の第3の実施の形態を示すもので、 [6] shows a third embodiment of the present invention,
(A)は内視鏡用外付チューブを取付けた内視鏡の挿入部の先端面を示す正面図、(B)は同内視鏡の挿入部の先端部分を示す斜視図。 (A) is a front view showing a distal end surface of the insertion portion of the endoscope fitted with endoscopic external tube, (B) is a perspective view of the distal portion of the insertion portion of the endoscope.

【図7】 第3の実施の形態の内視鏡用外付チューブをチューブ固定リングから取外す作業を説明する内視鏡の挿入部の先端部分を示す斜視図。 Figure 7 is a perspective view of the distal portion of the insertion portion of the endoscope of the third embodiment of the endoscope external tube illustrating the operation of removing the tube fixing ring.

【図8】 本発明の第4の実施の形態を示すもので、 [8] shows the fourth embodiment of the present invention,
(A)は内視鏡用外付チューブを取付けた内視鏡の挿入部の先端面を示す正面図、(B)は同内視鏡の挿入部の先端部分を示す斜視図。 (A) is a front view showing a distal end surface of the insertion portion of the endoscope fitted with endoscopic external tube, (B) is a perspective view of the distal portion of the insertion portion of the endoscope.

【図9】 第4の実施の形態の内視鏡用外付チューブを内視鏡の先端部から取外す作業を説明する内視鏡の挿入部の先端部分を示す斜視図。 Figure 9 is a perspective view showing a distal end portion of an insertion portion of an endoscope for explaining the work of detaching the distal end of the endoscope a fourth embodiment of the endoscope external tube.

【図10】 第4の実施の形態の内視鏡用外付チューブをガイドワイヤに沿って取外す作業を説明する内視鏡の挿入部の先端部分を示す斜視図。 Figure 10 is a perspective view showing a distal end portion of an insertion portion of an endoscope for explaining the work of detaching along the guide wire to the fourth embodiment of the endoscope external tube.

【符号の説明】 DESCRIPTION OF SYMBOLS

2 内視鏡 3 挿入部 4 手元操作部 8 チューブ本体 9 チューブ固定リング(係合部) 13 把持部(係合解除手段) 2 endoscope 3 inserted portion 4 operation portion 8 tube body 9 tube fixing ring (engaging portion) 13 gripper (disengaging means)

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 内視鏡の挿入部の先端部から基端部側の手元操作部側まで前記内視鏡の挿入部に沿って延設される可撓性チューブによってチューブ本体が形成され、前記内視鏡の挿入部に前記チューブ本体が取り外し可能に取付けられる内視鏡用外付チューブにおいて、 前記チューブ本体の先端部を前記内視鏡の挿入部の先端部に係脱可能に係合する係合部と、 前記チューブ本体の基端部側の操作によって前記係合部の係合を解除する係合解除手段とを具備することを特徴とする内視鏡用外付チューブ。 Tube body is formed by a method according to claim 1 an endoscope flexible tube which extends along the insertion portion of the endoscope from the distal end of the insertion portion to the operation portion side of the base end portion side, in the tube body tube External endoscopic mounted removably in the insertion portion of the endoscope, removably engaging the tip portion of the tube body to the distal end of the insertion section of the endoscope an engagement portion for the engaging portion for an endoscope external tube, characterized by comprising a disengagement means for disengaging the by the base end of the operation of the tube body.
JP2000340889A 2000-11-08 2000-11-08 Outside tube for endoscope Withdrawn JP2002143078A (en)

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