JP2005131164A - External channel for endoscope - Google Patents

External channel for endoscope

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JP2005131164A
JP2005131164A JP2003371741A JP2003371741A JP2005131164A JP 2005131164 A JP2005131164 A JP 2005131164A JP 2003371741 A JP2003371741 A JP 2003371741A JP 2003371741 A JP2003371741 A JP 2003371741A JP 2005131164 A JP2005131164 A JP 2005131164A
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portion
channel
external
fixing
endoscope
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JP2003371741A
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Tsutomu Ishiguro
Takahiro Kishi
Yasuto Kura
Toshio Nakamura
Akira Suzuki
俊夫 中村
康人 倉
孝浩 岸
努 石黒
明 鈴木
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Olympus Corp
オリンパス株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an external channel parallelly attached along the insertion portion of a flexible endoscope in which the external channel are firmly fixed to the endoscope to allow the fixing force to be arbitrarily adjusted. <P>SOLUTION: The external channel 7 for the endoscope has a function adding portion 8 arranged along the insertion portion and adding a function to the endoscope, a fixing portion 10 arranged in the function adding portion 8, a fixing face 12 formed in the fixing portion 10 pressedly contacting with the external face of the insertion portion without clearance, an opening portion 13 opening from the fixing face 12 to the side of the external face, a flexible suction tubular channel 9 being in communication with the opening portion 13 and arranged along the insertion portion, and a suction mechanism connected to the suction tubular channel 9 and sucking air from the opening portion 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、内視鏡用の外付けチャンネルに関するものである。 The present invention relates to external channel for an endoscope.

人体の消化管内に挿入可能な内視鏡には、鉗子等の処置具を挿通したり、送気、送水、吸引等の作業を行うためのチャンネルが複数設けられている。 The human digestive tract to be inserted endoscope, or by inserting a treatment tool such as forceps, air, water, channels for working in suction or the like is provided with a plurality. 近年では、治療内容も体腔内の腫瘍を切除する内視鏡的粘膜切除術、内視鏡的止血など多様化しているため、効率的な治療を行うこと目的として、既存の内視鏡に外付けチャンネルを設けることが従来から知られている。 In recent years, endoscopic mucosal resection therapeutic regimen also excised tumor in the body cavity, because of the diversification endoscopic hemostasis, for the purpose to perform efficient treatment, outside the existing endoscopes providing the assigned channel has been known.
この外付けチャンネルは、内視鏡の挿入部の外側に着脱自在に併設されるものであり、例えば、リング状の連結部材により内視鏡の挿入部に連結されるように構成されているものがあった。 The external channel, which is detachably features outside of the insertion portion of the endoscope, for example, those that are configured to be coupled to the insertion portion of the endoscope by a ring-shaped connecting member was there. また、従来の外付けチャンネルとしては、内視鏡の挿入部に対して強固に固定することを目的として、外付けチャンネルを内視鏡の挿入部に粘着剤を介して貼り付けるものがあった(例えば、特許文献1参照。)。 As the conventional external channel, for the purpose of firmly fixed to the insertion portion of the endoscope, there is one paste through an adhesive to the insertion portion of the endoscope external channel (e.g., see Patent Document 1.).
登録実用新案第2558354号公報 Registered Utility Model No. 2558354 publication

しかしながら、上記従来の外付けチャンネルにおいては、内視鏡を体腔内で進退させた際に、進退時の抵抗力や内視鏡の挿入部を湾曲させる力が内視鏡自体に加わり、連結部材が内視鏡から外れる方向に力を受ける。 However, the above conventional external channel, adds the endoscope when the advanced and retracted within the body cavity, the force endoscope itself to bend the insertion portion of the resistance force and the endoscope during retreat, the coupling member There receives a force in a direction out of the endoscope. そして、外付けチャンネルが内視鏡から外れると、処置具等の挿通や操作が困難となり、また、内視鏡の進退を妨げたり、体腔を傷つけるという問題があった。 The external channel deviates from the endoscope, the insertion and manipulation of such treatment tool is difficult and not impede reciprocating endoscope, there is a problem that hurt the body cavity.
また、外付けチャンネルを特殊な粘着剤により内視鏡に固定している構成では、内視鏡の挿入部が体腔内において湾曲した際に、外付けチャンネルと内視鏡との固定部分において内視鏡が破損する虞があった。 Inner Further, in the structure is fixed to an endoscope external channel by a special adhesive, when the insertion portion of the endoscope is curved in the body cavity, the fixed part of the external channel and the endoscope there is a possibility that the visual mirror may be damaged. また、この構成では、外付けチャンネルを内視鏡から取り外すことができないという問題があった。 Further, in this configuration, there is a problem that can not be removed external channel from the endoscope.
この発明は上述した事情に鑑みてなされたものであって、外付けチャンネルを内視鏡に強固に固定すると共に、その固定力を適宜調整できる外付けチャンネルを提供することを目的としている。 The present invention was made in view of the above circumstances, with firmly fixed to an endoscope external channel, and its object is to provide an external channel which can appropriately adjust its fixing force.

上記目的を達成するために、この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.
請求項1に係る発明は、可撓性を有する内視鏡の挿入部に沿って併設する外付けチャンネルであって、前記挿入部に沿って配し、内視鏡に機能を付加する付加機能部と、該付加機能部に設けた固定部と、該固定部に形成され、前記挿入部の外面に隙間無く当接する固定面と、該固定面から前記外面側に開口する開口部と、該開口部に連通し、前記挿入部に沿って配した可撓性を有する吸引用管路と、該吸引用管路に接続され、前記開口部から空気を吸引する吸引機構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を提供する。 Invention provides a external channel which houses along the insertion portion of an endoscope having a flexible, arranged along the insertion portion, the additional function to add a function to the endoscope according to claim 1 and parts, and a fixing portion provided in the additional function unit is formed in the fixed part, and a fixing surface which abuts without clearance an outer surface of the insertion portion, and the opening portion that is opened in the outer surface side from the fixed surface, the communicating with the opening, a suction conduit having an arranged along the insertion portion flexible, is connected to the intake cited conduit, characterized in that it comprises a suction mechanism for sucking air from the opening providing an external channel for an endoscope to.

この発明によれば、外付けチャンネルを内視鏡の挿入部に固定する場合には、固定面を挿入部の外面に当接させ、この状態から吸引機構により吸引管路内の空気を吸引する。 According to the present invention, in case of fixing the insertion portion of the endoscope an external channel, it is brought into contact with the fixing surface to the outer surface of the insertion portion to suck air in the suction conduit by the suction mechanism from the state . この際には、吸引管路内及び開口部内が陰圧となるため、固定部が挿入部の外面に吸着して外付けチャンネルが内視鏡の挿入部に固定されることになる。 At this time, in the suction channel and the opening for the negative pressure, so that the fixing unit is external channel adsorbed on the outer surface of the insertion portion is fixed to the insertion portion of the endoscope. なお、挿入部と外付けチャンネルとの固定力は、吸引管路内及び開口部内の圧力を調整することにより容易に変化させることができる。 The fixing force of the insertion portion and the external channel can be easily changed by adjusting the pressure in the suction conduit and the opening. また、吸引管路内及び開口部内の陰圧を開放することにより、固定部と挿入部との吸着を容易に解除することができる。 Further, by opening the negative pressure of the suction conduit and the opening, it is possible to easily release the adsorption of the insertion portion fixing portion.

請求項2に係る発明は、請求項1に記載の外付けチャンネルにおいて、前記付加機能部が、可撓性を有し、各種処置具を挿通させる挿通路や送気、送水、吸引の流体通路として利用される可撓性管路を備えることを特徴とする外付けチャンネルを提供する。 Invention, in the external channel according to claim 1, wherein the additional function unit has flexibility, the insertion path and air for inserting various treatment instruments, water supply, the fluid passage of the suction according to claim 2 providing the flexible conduit utilized to provide an external channel, wherein a.
この発明によれば、付加機能部を、各種処置具を挿通させる挿通路や、体腔内を膨らます空気や体腔内を洗浄する水を供給したり、体腔内の異物を吸引除去させる流体通路として利用する可撓性管路とすることにより、1つの外付けチャンネルに様々な機能を持たせることができる。 According to the present invention, use of the additional function unit, the insertion path and for inserting various treatment instruments, and supplies the water to wash the air and the body cavity to inflate the body cavity, as a fluid passage for sucking and removing foreign matter in a body cavity with flexible conduit which can have a variety of functions in a single external channel. したがって、各処置具の挿通路や流体通路をそれぞれ別個の付加機能部として設ける必要がなくなり、結果として、外付けチャンネルと挿入部とを合わせた外径寸法を小さく形成できる。 Therefore, the insertion passage and the fluid passage of the treatment instrument, respectively need not be provided as a separate additional function unit, as a result, can be formed smaller an outer diameter matched and the external channel insert.

請求項3に係る発明は、請求項1又は請求項2に記載の外付けチャンネルを備えることを特徴とする内視鏡装置を提供する。 The invention of claim 3 is to provide an endoscope apparatus, characterized in that it comprises an external channel according to claim 1 or claim 2.
この発明によれば、内視鏡の挿入部と外付けチャンネルの固定部とが空気圧によりに相互に吸着するため、挿入部と外付けチャンネルとが相互に強固に固定されることになる。 According to the present invention, since the endoscope insertion portion and the external channel of the fixing portion is adsorbed to each other by the air pressure, so that the insertion portion and the external channel is firmly fixed to each other. また、吸引管路内及び開口部内の圧力を調整することにより、挿入部と外付けチャンネルとの固定力を容易に調整できる。 Further, by adjusting the pressure in the suction conduit and the opening portion can easily adjust the clamping force between the insertion portion and the external channel. さらに、吸引機構による吸引管路内及び開口部内の陰圧を開放することにより、固定部と挿入部との吸着を容易に解除できるため、外付けチャンネルの取り扱いが容易となる。 Further, by opening the negative pressure of the suction conduit and the opening by the suction mechanism, since it easily releases the suction of the stationary portion and the insertion portion, which facilitates handling of the external channel.

本発明に係る外付けチャンネル及びこれを備えた内視鏡装置によれば、内視鏡の挿入部は、空気圧を利用して固定部の固定面に吸着されるため、挿入部と外付けチャンネルとを相互に強固に固定することができる。 According to the endoscope apparatus equipped with an external channel and the same according to the present invention, since the insertion portion of the endoscope, which is attracted to the fixed surface of the fixed portion by using air pressure, the insertion portion and the external channel it can be firmly fixed the door to each other.
また、吸引管路内及び開口部内の圧力を調整することにより、挿入部と外付けチャンネルとの固定力を容易に変化できるため、固定部との当接部分における挿入部の破損防止を図ることができる。 Further, by adjusting the pressure in the suction conduit and the openings, it is possible to easily change the fixing force between the insertion portion and the external channel, possible to prevent damage of the insertion portion in the contact portion between the fixed portion can.

さらに、吸引管路内及び開口部内の陰圧を開放することにより、固定部と挿入部との吸着を容易に解除できるため、外付けチャンネルを容易に取り扱うことができる。 Further, by opening the negative pressure of the suction conduit and the opening, it is possible to easily release the adsorption of the fixed portion and the insertion portion, it can be handled external channel easily.
また、外付けチャンネルと内視鏡を合わせた外径寸法を小さくすることができ、外付けチャンネルを内視鏡の挿入部と合わせて容易に体腔内に挿入することが可能となる。 Further, it is possible to reduce the outer diameter matched the external channel and the endoscope, it becomes possible to easily be inserted into the body cavity together with the insertion portion of the endoscope external channel.

図1から図5は本発明の第1の実施形態を示している。 Figure 5 shows a first embodiment of the present invention from FIG. 図1に示すように、内視鏡1は、体腔内に挿入する挿入部2と体腔の外側に配される操作部6とを備えている。 As shown in FIG. 1, an endoscope 1 includes an operation section 6 which is disposed outside of the insertion portion 2 and the body cavity to be inserted into a body cavity.
挿入部2は、先端側から順次配される先端部3、湾曲部4及び可撓管部5を備えている。 The insertion portion 2, the distal end portion 3 which are sequentially arranged from the distal end side, and a curved portion 4 and the flexible tube section 5. 先端部3には、CCDに体腔内の観察画像を結像させるための観察窓、体腔内の観察部分を照らす照明窓、各種処置具を挿通して処置を行うためのチャンネルの開口部等が設けられている。 The tip 3, observation window for forming an observation image in the body cavity to CCD, an illumination window to illuminate the observation portion in a body cavity, opening, etc. of a channel for performing a treatment by inserting various treatment instruments is It is provided. 可撓管部5は、体腔内の形状に応じて湾曲できるようになっている。 Flexible tube portion 5 is adapted to be bent according to the shape of the body cavity. 操作部6は、湾曲部4を上下に湾曲させて先端部3の向きを変更させる等の各種操作を行うように構成されている。 Operation unit 6 is configured to perform various operations such as changing the curved portion 4 orientation of the tip portion 3 is curved vertically.

図2に示すように、この内視鏡1に取り付ける外付けチャンネル7は、可撓性チューブ(可撓性管路)8及び吸引耐性可撓性チューブ(吸引用管路)9を備えている。 As shown in FIG. 2, external channel 7 attached to the endoscope 1 comprises a flexible tube (flexible conduit) 8 and the suction resistance flexible tube (suction pipe) 9 . これら可撓性チューブ8及び吸引耐性可撓性チューブ9は、その長手方向の中途部において湾曲できる可撓性を有している。 These flexible tube 8 and suction resistant flexible tube 9 is flexible which can bend in an intermediate portion in the longitudinal direction.
可撓性チューブ8は、各種処置具を挿通させる挿通路や、体腔内を膨らます空気や体腔内を洗浄する水を供給したり、体腔内の異物を吸引除去させる流体通路として使用するものである。 Flexible tube 8 is to use various biopsy channel and for inserting, and supplies the water to wash the air and the body cavity inflating the body cavity, as a foreign substance fluid passage to aspirate the body cavity .

可撓性チューブ8及び吸引耐性可撓性チューブ9の長手方向の一端には、内視鏡1の先端部3に取り付ける取付部(固定部)10が固定されている。 One longitudinal end of the flexible tube 8 and suction resistant flexible tube 9, attachment portion (fixed portion) 10 attached to the endoscope 1 of the distal end portion 3 is fixed. 取付部10には、可撓性チューブ8の先端を外方に開口させるチャンネル開口部11が形成されている。 The mounting portion 10, the channel opening 11 which opens the distal end to the outside of the flexible tube 8 is formed.
この取付部10は、内視鏡1の先端部3の外周面に当接させる固定面12を有しており、固定面12は、先端部3の外周面の形状に一致する略凹面状に形成されており、内視鏡1の先端部3の外周面に隙間無く当接させることができるようになっている。 The mounting portion 10 has a fixed surface 12 which abuts against the outer peripheral surface of the distal end portion 3 of the endoscope 1, the fixed surface 12, substantially concave to match the shape of the outer peripheral surface of the distal end portion 3 it is formed, thereby making it possible to without any gap abuts on the outer peripheral surface of the distal end portion 3 of the endoscope 1. この固定面12には、図3,4に示すように、吸引耐性可撓性チューブ9の先端部に連通する大きな開口部13が1つ形成されている。 The fixing surface 12, as shown in FIGS. 3 and 4, a large opening 13 communicating with the front end portion of the suction-resistant flexible tube 9 is formed by one.

また、図2に示すように、吸引耐性可撓性チューブ9の長手方向の他端には、切替弁17が接続されている。 Further, as shown in FIG. 2, in the longitudinal direction of the other end of the suction-resistant flexible tube 9, the switching valve 17 is connected. 切替弁17は、吸引耐性可撓性チューブ9の基端側の連通、非連通を切り換えるもの、例えば、三方活栓や電磁弁からなる。 Switching valve 17 is communicated with the base end side of the suction-resistant flexible tube 9, for switching the non-communicated, for example, a three-way stopcock and solenoid valves. この切替弁17には、吸引耐性可撓性チューブ9の一端側から空気を吸引するシリンジ(吸引機構)19に接続するための接続口金18が設けられている。 The switching valve 17, connection mouth ring 18 for connecting to a syringe (suction mechanism) 19 for sucking air is provided from one end side of the suction-resistant flexible tube 9.
したがって、シリンジ19を接続口金18に取り付けた状態において、図4に示すように、取付部10の開口部13側から吸引耐性可撓性チューブ9の他端側(A方向)に空気を吸引した際には、外方から開口部13内(B方向)に空気が吸い込まれることになる。 Accordingly, in the state of attaching the syringe 19 to the connection mouth ring 18, as shown in FIG. 4, and suction air on the other end side from the opening 13 side of the suction-resistant flexible tube 9 of the mounting portion 10 (A direction) when doing so, so that the air is sucked from the outside into the opening within 13 (B direction).

図5に示すように、取付部10の固定面12を先端部3の外周面に当接させた状態において空気の吸引を行った場合には、取付部10の開口部13内や吸引耐性可撓性チューブ9内が減圧されるため、取付部10が内視鏡1の先端部3の外周面に吸着することになる。 As shown in FIG. 5, when performing the suction of air is in a state in which the fixing surface 12 is brought into contact with the outer peripheral surface of the distal end portion 3 of the attachment portion 10, the opening 13 of the mounting portion 10 and the suction resistance Yes since Shiwasei tube 9 is reduced, so that the mounting portion 10 is attracted to the outer peripheral surface of the distal end portion 3 of the endoscope 1. したがって、吸引耐性可撓性チューブ9は、その内部の陰圧に耐えうる耐圧性を有していることが好ましい。 Thus, the suction resistance flexible tube 9 preferably has a pressure resistance to withstand the negative pressure therein. すなわち、吸引耐性可撓性チューブ9は、例えば、ゴム製のチューブ本体の周囲を金属繊維、樹脂繊維からなる網状体で構成したものを使用することが好ましい。 That is, the suction resistance flexible tube 9, for example, it is preferable to use those composed of a net-like body formed around the rubber tube body metal fiber, a resin fiber.
これら内視鏡1及び外付けチャンネル7により内視鏡装置が構成される。 Endoscopic device constituted by these endoscope 1 and external channel 7.

以上のように構成された外付けチャンネル7を内視鏡1に取り付ける際には、はじめに、先端部3の外周面に固定面12を当接させると共に、吸引耐性可撓性チューブ9とシリンジ19とが相互に連通する位置に切替弁17のノブ17aを配する。 The time of attaching the external channel 7 constituted as described above in the endoscope 1, initially, is brought into contact with the fixed surface 12 to the outer peripheral surface of the distal end portion 3, the suction resistance flexible tube 9 and the syringe 19 preparative to distribution knob 17a of the switching valve 17 at a position communicating with each other. 次いで、シリンジ19を操作して接続口金18から吸引耐性可撓性チューブ9内部の空気を吸引すると、吸引耐性可撓性チューブ9内及び開口部13内が陰圧となり、取付部10の固定面12に内視鏡1の先端部3が吸着する。 Then, when sucking the suction resistance flexible tube 9 inside the air from the connection mouth ring 18 by operating the syringe 19, and within openings 13 suction resistance flexible tube 9 becomes negative pressure, the fixing surface of the mounting portion 10 tip 3 of the endoscope 1 is adsorbed on 12. これにより取付部10と先端部3とが相互に固定されることになる。 Thereby the mounting portion 10 and the distal end portion 3 is to be fixed to each other.

この状態において、吸引耐性可撓性チューブ9とシリンジ19とが非連通状態となる位置に切替弁17のノブ17aを配すると、シリンジ19を接続口金18から取り外してもは、吸引耐性可撓性チューブ9内及び開口部13内が陰圧状態に維持される。 In this state, when the suction resistance flexible tube 9 and the syringe 19 is distribution knob 17a of the switching valve 17 to the position where the non-communicated state, even remove the syringe 19 from the connection mouth ring 18, the suction resistance flexible and within opening 13 tube 9 is maintained in negative pressure state. したがって、取付部10と先端部3との固定状態が継続的に保持される。 Therefore, the fixed state between the mounting portion 10 and the distal end portion 3 is continuously held.
なお、これら取付部10と先端部3との相対的な位置ずれや固定部分に応力が発生した場合には、切替弁17のノブ17aを動かして吸引耐性可撓性チューブ9内部を外気に連通させて開口部13の陰圧を開放する。 The relative positions when the stress is generated in the deviation and the fixed portion, communicating the internal suction resistance flexible tube 9 to the outside air by moving the knob 17a of the switching valve 17 between these attachment portions 10 and the distal end portion 3 It is allowed to open the negative pressure of the opening 13. これにより、取付部10と先端部3との固定状態が解除されることになる。 As a result, the fixed state of the attachment portion 10 and the distal end portion 3 is released.

上記のように、この外付けチャンネル7及びこれを備えた内視鏡装置によれば、空気圧を利用して内視鏡1の先端部3を取付部10の固定面12に吸着させるため、挿入部2と外付けチャンネル7とを相互に強固に固定することができる。 As described above, this according to the external channel 7 and an endoscope apparatus equipped with this, in order to adsorb the tip 3 of the endoscope 1 to the fixing surface 12 of the mounting portion 10 by utilizing the air pressure, insertion it can be firmly fixed to the part 2 and the external channel 7 with one another.
また、吸引耐性可撓性チューブ9内及び開口部13内の圧力を調整することにより、挿入部2と外付けチャンネル7との固定力を容易に変化できるため、取付部10との当接部分における挿入部2の破損防止を図ることができる。 Further, by adjusting the pressure in the suction resistance flexible tube 9 and the opening 13, it is possible to easily change the fixing force of the insertion portion 2 and the external channel 7, the contact portion between the mounting portion 10 it is possible to prevent damage of the insertion portion 2 in. 特に、手動操作により吸引耐性可撓性チューブ9内部及び開口部13の減圧を行うシリンジ19を使用するため、吸引耐性可撓性チューブ9内部及び開口部13の圧力を容易に調整することができると共に、吸引を行う機構を低コストで構成することができる。 In particular, in order to use the vacuum syringe 19 for the suction resistance flexible tube 9 inside and the opening 13 by a manual operation, it is possible to easily adjust the pressure of the suction-resistant flexible tube 9 inside and the opening 13 together it can constitute a mechanism for sucking a low cost.

さらに、吸引耐性可撓性チューブ9内及び開口部13内の陰圧を開放することにより、取付部10と挿入部2との吸着を容易に解除できるため、外付けチャンネル7を容易に取り扱うことができる。 Further, by opening the negative pressure of the suction-resistant flexible tube, and the opening 13 9, it is possible to easily release the adsorption of the mounting portion 10 and the insertion portion 2, the handling of external channel 7 easily can.
また、可撓性チューブ8は、各種処置具の挿通路や、空気や液体を流通させる流体通路として使用するため、1つの外付けチャンネル7に様々な機能を持たせることができる。 Further, the flexible tube 8, the insertion path and the various treatment instruments, for use as a fluid passage for circulating the air or liquid can have a variety of functions in a single external channel 7. したがって、各処置具の挿通路や流体通路を別個に設ける必要がなくなり、外付けチャンネル7と挿入部2とを合わせた外径寸法を小さく形成でき、外付けチャンネル7を内視鏡1の挿入部2と合わせて容易に体腔内に挿入することが可能となる。 Therefore, the insertion passage and the fluid passage of the treatment instrument separately is not necessary to provide an outer diameter matched to the external channel 7 and the insertion portion 2 can turn formed small, the insertion of the endoscope 1 an external channel 7 it becomes possible to easily be inserted into the body cavity together with part 2.

なお、上述した第1の実施形態においては、シリンジ19により吸引耐性可撓性チューブ9の一端側から空気を吸引するとしたが、例えば、真空ポンプや内部を予め真空引きした真空容器により吸引するとしても構わない。 As in the first embodiment described above has been the syringe 19 from one end of the suction-resistant flexible tube 9 and sucking air, for example, to suck a pre-evacuated vacuum vessel interior and the vacuum pump it may be. 真空ポンプを使用する場合には、吸引耐性可撓性チューブ9内部及び開口部13の減圧が自動で行われるため、取付部10と先端部3との固定を容易に行うことができる。 When using a vacuum pump, since the vacuum suction resistance flexible tube 9 inside and the opening 13 is performed automatically, it is possible to fix the attachment portion 10 and the distal end portion 3 readily.
また、真空容器を使用する場合には、接続口金18に穴開け用のピンを設け、接続口金を真空容器に差し込むとしてもよい。 Also, when using the vacuum vessel, a pin for drilling provided in the connection mouth ring 18, a connection mouth ring may be inserted into the vacuum vessel. この構成においては、真空容器に穴が空くと同時に吸引耐性可撓性チューブ9内及び開口部13内が陰圧となるため、減圧を短時間で行うことができる。 In this configuration, since the simultaneous suction resistance in the flexible tube 9 and opening 13 when the hole becomes available in the vacuum vessel becomes negative pressure, it can be carried out under reduced pressure in a short time.

さらに、例えば、図6に示すように、切替弁17と接続口金18との間に、圧力計20を設けるとしても構わない。 Furthermore, for example, as shown in FIG. 6, between the switching valve 17 and the connection mouth ring 18, it may be provided a pressure gauge 20. この構成の場合には、吸引耐性可撓性チューブ9の一端側から空気を吸引する際に、圧力計20を視認しながら吸引を行うことができるため、先端部3に対する取付部10の吸引力を適正値に設定できる。 With this arrangement, when air is sucked from one end of the suction-resistant flexible tube 9, it is possible to perform suction while viewing the pressure gauge 20, the suction force of the mounting portion 10 with respect to the distal end portion 3 the can be set to an appropriate value. また、圧力計20の値により取付部10における吸引状態や吸引力を確認できるため、内視鏡1の挿入部2と外付けチャンネル7との固定の確実性を向上させることができる。 Further, since it confirm the attraction state and the suction force of the mounting portion 10 by the value of the pressure gauge 20, it is possible to improve the reliability of fixing of the insertion portion 2 and the external channel 7 of the endoscope 1.

さらに、取付部10には1つの大きな開口部13を設けるとしたが、これに限ることはなく、例えば、図7に示すように、複数(図示例では6個)の小さな開口部13を設けるとしても構わない。 Furthermore, the mounting portion 10 is set to provide a single large opening 13 is not limited to this, for example, as shown in FIG. 7, (in the illustrated example, 6) provide a plurality of small openings 13 of the it may be as. この構成の場合には、複数の開口部13を固定面12に分散して配置することにより、先端部3との固定を確実に行うことができる。 In the case of this configuration, by arranging the dispersed a plurality of openings 13 in the fixing surface 12, it is possible to reliably fix the front end portion 3. さらに、複数の開口部13を固定面12の中央や端部に分散配置した場合には、固定の確実性をさらに向上させることができる。 Furthermore, when distributed a plurality of openings 13 in the central and end portions of the fixing surface 12, it is possible to further improve the reliability of the fixing.

また、取付部10は可撓性チューブ8及び吸引耐性可撓性チューブ9の一端のみに固定されるとしたが、これに限ることなく、例えば、図8に示すように、可撓性チューブ8及び吸引耐性可撓性チューブ9の長手方向にわたって複数固定するとしてもよい。 Although attachment portion 10 is set to be fixed only to one end of the flexible tube 8 and suction resistant flexible tube 9 it is not limited to this, for example, as shown in FIG. 8, the flexible tube 8 and it may be more fixed along the longitudinal direction of the suction resistance flexible tube 9. この構成の場合には、内視鏡1に対して外付けチャンネル7を複数箇所において固定されるため、外付けチャンネル7をさらに強力に固定することができる。 With this arrangement, since it is fixed at a plurality of positions of the external channel 7 to the endoscope 1 can be further strongly fix the external channel 7. また、この場合には、内視鏡1の挿入部2全体に亘って可撓性チューブ8が固定されるため、挿入部2と可撓性チューブ8とを体腔内において一体的に動かすことができる。 Further, in this case, since the flexible tube 8 throughout the insertion portion 2 of the endoscope 1 is fixed, to move the insertion portion 2 and the flexible tube 8 integrally in a body cavity it can.

さらに、取付部10は、可撓性チューブ8及び吸引耐性可撓性チューブ9の一部に固定されることに限らず、例えば、取付部10を可撓性チューブ8及び吸引耐性可撓性チューブ9全体に一体的に設けるとしても構わない。 Furthermore, the mounting portion 10 is not limited to being secured to a portion of the flexible tube 8 and suction resistant flexible tube 9, for example, a flexible tube 8 and suction resistant flexible tube mounting portion 10 it may be as provided integrally with the whole 9. すなわち、図9,10に示すように、細長い棒状に形成されたマルチルーメン部材(固定部)23に、その長手方向に貫通するルーメン(可撓性管路)24及び吸引孔(吸引用管路)25を形成して外付けチャンネル21を構成する。 That is, as shown in FIGS. 9 and 10, elongated multi-lumen member (fixing portion) 23 formed in a rod shape, the lumen (flexible conduit) that penetrates in the longitudinal direction 24 and the suction holes (suction conduit ) constituting the external channel 21 to form a 25. この構成においては、マルチルーメン部材23は湾曲可能に形成されている。 In this configuration, the multi-lumen member 23 is bendable formed. ここで、マルチルーメン部材23のルーメン24形成部分は可撓性チューブ8に相当し、吸引孔25形成部分は吸引耐性可撓性チューブ9に相当する。 Here, the lumen 24 forming part of the multi-lumen member 23 corresponds to a flexible tube 8, the suction holes 25 formed part corresponding to the suction resistance flexible tube 9.

また、このマルチルーメン部材23は、取付部10と同様に、内視鏡1の挿入部2の外周面に当接させる固定面26、及び固定面26から吸引孔25に連通する開口穴(開口部)27を有している。 Further, the multi-lumen member 23, similar to the attachment portion 10, an opening hole (opening communicating fixing surface 26 is brought into contact with the outer peripheral surface of the insertion portion 2 of the endoscope 1, and from the fixed surface 26 to the suction holes 25 parts) and a 27. なお、吸引孔25の一端部は栓28により閉塞されている。 One end portion of the suction hole 25 is closed by plug 28.
以上のように構成された外付けチャンネル21では、マルチルーメン部材23がその全長にわたって挿入部2の外周面に吸着できるため、内視鏡1に対する外付けチャンネル21の固定力がより一層向上する。 In external channel 21 configured as described above, since the multi-lumen member 23 can be adsorbed on the outer peripheral surface of the insertion portion 2 over its entire length, fixing force of the external channels 21 for the endoscope 1 is further improved. また、マルチルーメン部材23と挿入部2とがより一体的に固定されるため、体腔内における挿入部2及びマルチルーメン部材23の挿通をよりスムーズに行うことができる。 Moreover, since the multi-lumen member 23 and the insertion portion 2 it can be more integrally fixed, it is possible to perform insertion of the insertion portion 2 and the multi-lumen member 23 in the body cavity more smoothly.

なお、マルチルーメン部材23を利用した外付けチャンネル21においては、固定面26を凹面状に形成することに限らず、例えば、図11に示すように、平面状に形成しても構わない。 Note that in the external channel 21 that uses the multi-lumen member 23 is not limited to forming a fixed surface 26 on the concave, for example, as shown in FIG. 11, it may be formed in a planar shape. ただし、この構成においては、マルチルーメン部材23を当接させる内視鏡1の挿入部2の外周面、例えば、可撓性管5の外周面の一部に長手方向に延びる平坦面(外面)29を形成しておく必要がある。 However, in this configuration, the outer peripheral surface of the insertion portion 2 of the endoscope 1 is brought into contact with the multi-lumen member 23, for example, a flat surface on a part of the outer circumferential surface of the flexible tube 5 extending in the longitudinal direction (the outer surface) 29 it is necessary to form a.
なお、マルチルーメン部材23の長手方向に直交する平坦面29の幅寸法をL、固定面26の幅寸法をlとして、これら2つの幅寸法L,lの間には、 Incidentally, the width of the flat surface 29 perpendicular to the longitudinal direction of the multi-lumen member 23 L, the width of the securing surface 26 as l, between these two width L, l,
L>l L> l
の関係がある。 Relationship of.

上記の構成を有する外付けチャンネル21によれば、容易に固定面26全体を平坦面29に当接させることができるため、外付けチャンネル21のマルチルーメン部材23を安定した状態で内視鏡1の挿入部2に吸着させることができる。 According to external channel 21 having the configuration described above, it is possible to easily contact the entire fixing surface 26 to the flat surface 29, the endoscope 1 of the multi-lumen member 23 of the external channel 21 in a stable state it can be adsorbed in the insertion portion 2.
また、平坦面29の幅寸法Lよりも固定面26の幅寸法lを小さくすることにより、マルチルーメン部材23が平坦面29からはみ出さないように取り付けることができるため、マルチルーメン部材23のはみ出し部分を体腔内部で引っ掛けて、マルチルーメン部材23が挿入部2から不意に剥がれることを防止できる。 Moreover, by reducing the width dimension l of the fixed surface 26 than the width L of the flat surface 29, since the multi-lumen member 23 can be mounted so as not to protrude from the flat surface 29, protrusion of the multi-lumen member 23 partial caught inside the body cavity, the multi-lumen member 23 can be prevented from being peeled unintentionally from the insertion portion 2.
なお、図11(d)に示すように、長手方向に直交するマルチルーメン部材23の断面形状を略円形に形成した場合には、マルチルーメン部材23の柔軟性が増すため、より容易に湾曲させることもできる。 Incidentally, as shown in FIG. 11 (d), in the case of forming the cross-sectional shape of the multi-lumen member 23 perpendicular to the longitudinal direction in a substantially circular shape, since the flexibility of the multi-lumen member 23 is increased, thereby more easily bend it is also possible.

また、例えば、図12に示すように、外付けチャンネル22は、上述した取付部10及びマルチルーメン部材23の両方を備えるとしても構わない。 Further, for example, as shown in FIG. 12, the external channel 22 may be provided with both of the mounting portion 10 and the multi-lumen member 23 described above. ここで、取付部10及びマルチルーメン部材23は、内視鏡1の先端部3及び可撓性管5にそれぞれ取り付けられるように並べて配されている。 Here, the mounting portion 10 and the multi-lumen member 23 is disposed side by side to be attached respectively to the endoscope distal end portion 3 and the flexible tube 5 of the mirror 1. これら取付部10とマルチルーメン部材23とは、可撓性チューブ8及び吸引耐性可撓性チューブ9により連結されている。 To these mounting portions 10 and the multi-lumen member 23 is connected by a flexible tube 8 and suction resistant flexible tube 9.
この構成の場合には、取付部10及びマルチルーメン部材23よりも容易に湾曲可能な可撓性チューブ8及び吸引耐性可撓性チューブ9が、大きな湾曲動作を行う内視鏡1の湾曲部4に沿って配されるため、外付けチャンネル7が湾曲部4の湾曲角度を制限することを抑制できる。 With this arrangement, the mounting portion 10 and the multi-lumen member flexible tube 8 which easily bent than 23 and suction resistant flexible tube 9, the curved portion 4 of the endoscope 1 for a large bending operation because disposed along, it is possible to prevent the external channel 7 to limit the bending angle of the bending portion 4. また、内視鏡1の先端部3まで可撓性チューブ8を延出させることができる。 Further, it is possible to extend the flexible tube 8 to the distal end 3 of the endoscope 1.
なお、取付部10はマルチルーメン部材23と同様に平坦な固定面26を有するとしても構わない。 Incidentally, the attachment portion 10 may be as having a multi-lumen member 23 with the same planar attachment surface 26. すなわち、例えば、図13に示すように、先端部3に当接する取付部10の固定面12を平面状に形成すると共に、固定面12に当接する先端部3の外周面を平坦面(外面)30に形成するとしてもよい。 That is, for example, as shown in FIG. 13, to form a fixing surface 12 of the mounting portion 10 abuts the distal end portion 3 in a plane, flat surface outer peripheral surface of the distal end portion 3 in contact with the fixing surface 12 (outer surface) it may be formed to 30.

さらに、可撓性チューブ8、吸引耐性可撓性チューブ9及びマルチルーメン部材23は、内視鏡1の挿入部2の長手方向に沿って配されるとしたが、これに限ることはなく、少なくとも先端部3及び湾曲部4の長手方向に沿って配されていればよい。 Furthermore, the flexible tube 8, the suction resistance flexible tube 9 and the multi-lumen member 23 is set to be arranged along the longitudinal direction of the insertion portion 2 endoscope 1 is not limited to this, it is sufficient that arranged along the longitudinal direction of at least the tip portion 3 and a curved section 4.
すなわち、例えば、図14に示すように、外付けチャンネル36は、可撓性チューブ及び吸引耐性可撓性チューブを1本にまとめたマルチルーメンチューブ31を可撓性管5の周囲に巻き付ける構成としてもよい。 That is, for example, as shown in FIG. 14, the external channel 36, a configuration of winding the multi-lumen tube 31 summarizes the flexible tube and suction resistant flexible tube in one around the flexible tube 5 it may be. この構成においては、挿入部2に固定する取付部10を湾曲部4の両端に位置する先端部3及び可撓性管5の一端部に配するように、マルチルーメンチューブ31の先端及び中途部に設けておく。 In this configuration, as disposed on one end portion of the distal end portion 3 and a flexible tube 5 which is located a mounting portion 10 for fixing the insertion portion 2 at both ends of the curved portion 4, the tip and middle portions of the multi-lumen tube 31 preferably provided to. また、操作部6側に位置する可撓性管5の他端部にも取付部10を固定できるように、マルチルーメンチューブ31に取付部10を設けておく。 Further, to stick a mounting portion 10 to the other end of the flexible tube 5 is located in the operating unit 6 side, the mounting portion 10 preferably provided in the multi-lumen tube 31. このマルチルーメンチューブ31は、その巻き付け力により可撓性管5に対して密着固定されている。 The multi-lumen tube 31 is closely fixed to the flexible tube 5 by the winding force.

マルチルーメンチューブ31の巻き付けピッチPは、可撓性管5の曲げの大きさを考慮して40mm以上とすることが好ましく、また、巻き付けの緩みやすさを考慮して200mm以下とすることが好ましい。 Pitch P winding of the multi-lumen tube 31 is preferably set to at least 40mm in consideration of the bending magnitude of the flexible tube 5, also preferably in consideration of loosening ease of winding or less 200mm . すなわち、巻き付けピッチPを40mm〜200mmの間で設定することが望ましく、体腔の内壁形状やマルチルーメンチューブ31の柔軟性を考慮して使用の際に巻き付けピッチPを上記範囲内で設定すればよい。 In other words, it is desirable to set the winding pitch P between 40Mm~200mm, the pitch P wound in use in view of the flexibility of the inner wall shape or multi-lumen tube 31 of the cavity may be set within the above range .
なお、図示例においてはマルチルーメンチューブ31の巻き付け方向が右巻きとなっているが、左巻きとなっていてもよい。 Although the winding direction of the multi-lumen tube 31 has a right-handed in the illustrated example, may become a left-handed.
また、このマルチルーメンチューブ31は、空気の吸引力により可撓性管5の外周面に当接する位置に吸着するための開口部を備えるとしても構わない。 Further, the multi-lumen tube 31 may be provided with an opening for suction in a position where it comes into contact with the outer peripheral surface of the flexible tube 5 by a suction force of air.

さらに、内視鏡1の挿入部2には、例えば、図15に示すように、取付部10を取り付ける位置に取付指標32を形成しておいてもよい。 Further, the insertion portion 2 of the endoscope 1, for example, as shown in FIG. 15, may be formed a mounting index 32 to the position for attaching the attachment portion 10. この取付指標32は、従来の内視鏡1にもある挿入部2の長さを示す長さ指標33と同様の方法で印刷されていればよい。 The attachment indicator 32 only needs to be printed in the same manner as the length indicator 33 which indicates the length of the insertion portion 2, which is also a conventional endoscope 1.
この構成の場合には、取付部10の取付位置が明確となるため、上述の外付けチャンネル7,21,36の取付を短時間で容易に行うことができる。 In the case of this configuration, since the mounting position of the mounting portion 10 becomes clear, it can be easily performed in a short time the mounting of the external channel 7,21,36 above.

また、内視鏡1には1つの外付けチャンネル7,21,36だけを設けるとしたが、これに限ることはなく、複数設けるとしても構わない。 Further, although the endoscope 1 was provided only one external channel 7,21,36, not limited to this, but may be a plurality provided. すなわち、例えば、図16に示すように、マルチルーメンチューブ31の先端及び中途部に設けた取付部10間のピッチP1,P2が相互に異なる2つの外付けチャンネル7,7を用意する。 That is, for example, as shown in FIG. 16, the pitch P1, P2 between the attachment portion 10 provided at the tip and middle portions of the multi-lumen tube 31 is prepared two external channels 7, 7 mutually different. そして、図17(a)に示すように、これら2つの外付けチャンネル7,7を取り付ける内視鏡1の挿入部2に、ピッチがP1の取付部10を取り付ける位置を示す取付指標34、及びピッチがP2の取付部10を取り付ける位置を示す取付指標35を挿入部2の長手方向に並べて印刷しておく。 Then, as shown in FIG. 17 (a), the insertion portion 2 of the endoscope 1 to attach the two external channels 7,7, attachment index 34 indicates the position where pitch attach the mounting portion 10 of the P1 and, pitch want to print side by side in the longitudinal direction of the mounting index 35 insertion portion 2 that indicates the position for attaching the attachment portion 10 of P2. これら2種類の取付指標34,35は、模様・色・大きさが相互に異なっており、いずれの外付けチャンネル7,7を取り付けるかを容易に認識できるようになっている。 These two types of attachment indicators 34 and 35, the pattern, color and size is adapted to have mutually different, can easily recognize whether to install the one of the external channels 7,7.

この構成の場合には、複数の外付けチャンネル7,7を内視鏡1に設ける構成であっても、各外付けチャンネル7,7の取付位置が容易にわかるため、複数の外付けチャンネルを容易に取り付けることができる。 With this arrangement, even it is provided with a plurality of external channels 7,7 to the endoscope 1, since the mounting position of each external channel 7, 7 can be readily seen, a plurality of external channels it can be easily attached.
なお、この構成においては、模様・色・大きさが異なる2種類の取付指標34,35を印刷するとしたが、これに限ることはなく、少なくとも複数の外付けチャンネル7,7の取付位置を判別できる取付指標が印刷されていればよい。 Note that in this configuration, although the pattern, color and size to print two different attachment indicators 34 and 35, not limited to this, determine the attachment position of at least a plurality of external channels 7,7 mounting indicators can only to be printed. すなわち、例えば、外付けチャンネル7,7の製品名「A」、「B」等の文字・記号を取付指標34,35として印刷してもよい。 That is, for example, the product name of the external channels 7,7 "A" may be printed characters and symbols such as "B" as an attachment index 34 and 35.
また、2種類の取付指標34,35は挿入部2の長手方向に並べて印刷されるとしたが、これに限ることはなく、例えば、図17(b)に示すように、挿入部2の外周面の周方向に相互にずらして形成してもよい。 Although the two types of mounting indicators 34 and 35 were to be printed side by side in the longitudinal direction of the insertion portion 2 is not limited to this, for example, as shown in FIG. 17 (b), the outer periphery of the insertion portion 2 in the circumferential direction of the surface may be formed by shifting each other.
さらに、1つの内視鏡1に取り付ける2つの外付けチャンネル7,7のピッチP1,P2は、相互に異なるとしたが、相互に等しいとしても構わない。 Moreover, the pitch P1, P2 of the two external channels 7, 7 attached to one of the endoscope 1 is set to mutually different, may be equal to each other.

次に、図18は本発明の第2の実施形態を示しており、この実施形態は、前述した図14に示す外付けチャンネル36とほぼ基本的構成が同一であるが、内視鏡1の挿入部2に対する取付方法について異なっている。 Next, FIG. 18 shows a second embodiment of the present invention, this embodiment, although the same almost basic configuration as the external channel 36 shown in FIG. 14 described above, the endoscope 1 different for attaching method for the insertion portion 2. ここでは、図18において挿入部2に取り付ける外付けチャンネル40の構成の説明を行い、図14の構成要素と同一の部分については同一符号を付し、その説明を省略する。 Here performs description of the configuration of the external channel 40 attached to the insertion portion 2 in FIG. 18 are denoted by the same reference numerals same components as those of the FIG. 14, description thereof is omitted.
すなわち、この外付けチャンネル40は、図18(a)に示すように、可撓性チューブ及び吸引耐性可撓性チューブを1本にまとめたマルチルーメンチューブ31と、マルチルーメンチューブ31の長手方向に間隔をおいて配された2つの取付部10と、薄肉弾性管部41とを備えている。 That is, the external channel 40, as shown in FIG. 18 (a), the flexible tube and suction resistant flexible tube with multi-lumen tube 31 combined into one, in the longitudinal direction of the multi-lumen tube 31 and two attachment portions 10 arranged at intervals, and a thin-walled elastic tube section 41.
薄肉弾性管部41は、ポリウレタン、ラテックス等の弾性を有する樹脂やゴムから形成されている。 Thin elastic tube section 41 is formed of resin or rubber having a polyurethane, an elastic latex. また、この薄肉弾性管部41は薄肉の略円筒状に形成されており、径方向だけでなく、曲げに対しても柔軟性を有している。 Further, the thin elastic tube portion 41 is formed in a thin-walled substantially cylindrical, not only radially, and has flexibility against bending. この薄肉弾性管部41の内径寸法は、弾性的に伸ばさない状態において、内視鏡1の先端部3、湾曲部4及び可撓性管5の外径寸法よりも小さく形成されている。 Inner diameter of the thin elastic tube 41, when no extended elastically, the endoscope 1 of the tip portion 3 is formed smaller than the outer diameter of the curved portion 4 and the flexible tube 5.

この薄肉弾性管部41には、長手方向に延びる2本の切取線42が形成されており、薄肉弾性管部41の長手方向の一端部には、この切取線42につながって長手方向に突出するつまみ43が形成されている。 The thin-walled elastic tube section 41, which tear lines 42 of two longitudinally extending is formed in the longitudinal end of the thin elastic tube section 41, projecting longitudinally connected to the cutting line 42 knob 43 is formed. すなわち、このつまみ43を薄肉弾性管部41からめくるように引っ張った際には、切取線42において薄肉弾性管部41が切断されることになる。 That is, when pulled to turn the knob 43 a thin elastic tube section 41, so that the thin-walled elastic tube section 41 in the cutoff line 42 is disconnected. このように構成された薄肉弾性管部41は、取付部10に一体的に固定されており、空気による挿入部2との吸着を行う取付部10の開口部は、薄肉弾性管部41の内方側に貫通している。 Thin elastic tube section 41 thus constructed is integrally fixed to the mounting portion 10, the opening of the mounting portion 10 for the adsorption of the insertion portion 2 by the air, of the thin-walled elastic tube section 41 It extends through the square side.
薄肉円筒管部41の貫通孔には、略円筒状に形成された拡大円筒部材42が挿通されている。 The through hole of the thin cylindrical tube portion 41, expanded cylindrical member 42 formed in a substantially cylindrical shape is inserted. 拡大円筒部材44の貫通孔44aの内径寸法は、内視鏡1の先端部3、湾曲部4及び可撓性管5の外径寸法よりも大きく形成されている。 The inner diameter of the through hole 44a of the enlarged cylindrical member 44, the endoscope 1 of the tip portion 3 is formed larger than the outer diameter of the curved portion 4 and the flexible tube 5. したがって、薄肉円筒管部41は、拡大円筒部材44の挿通により、その内径寸法が内視鏡1の先端部3、湾曲部4及び可撓性管5の外径寸法よりも拡大するように弾性変形している。 Therefore, thin cylindrical tube portion 41, the insertion of the enlarged cylindrical member 44, the distal end portion 3 of the endoscope 1 that inside diameter, elastic so enlarge than the outer diameter of the curved portion 4 and the flexible tube 5 It is deformed. この拡大円筒部材44の一端部にはフランジ部45が形成されている。 Flange portion 45 is formed at one end of the enlarged cylindrical member 44.
これら薄肉円筒管部41及び拡大円筒部材44により、内視鏡1の挿入部2に外付けチャンネル40を取り付けるための外付けチャンネル組付キット46が構成されている。 These thin-walled cylindrical tube portion 41 and an enlarged cylindrical member 44, external channel assembly kit 46 for attaching the external channel 40 to the insertion portion 2 of the endoscope 1 is formed.

以上のように構成された外付けチャンネル40を内視鏡1に取り付ける場合には、はじめに、フランジ部45が形成されていない拡大円筒部材44の他端部側から挿入部2を貫通孔44aに挿入する。 When mounting the external channel 40 that is configured as described above in the endoscope 1, first, the insertion portion 2 from the other end of the enlarged cylindrical member 44 the flange 45 is not formed in the through hole 44a insert. 次いで、フランジ部45を把持して拡大円筒部材44を薄肉弾性管部41から抜き取る。 Then, extract the larger cylindrical member 44 while gripping the flange portion 45 a thin elastic tube section 41.
この状態においては、図18(b)に示すように、拡大円筒部材44による薄肉弾性管部41の弾性変形が解除され、薄肉弾性管部41の内径寸法が小さくなる。 In this state, as shown in FIG. 18 (b), it is released the elastic deformation of the thin-walled elastic tube section 41 by expanding the cylindrical member 44, the inner diameter of the thin-walled elastic tube 41 is reduced. このため、薄肉弾性管部41の内周面が挿入部2の先端部3、湾曲部4及び可撓性管5の外周面に密着することになる。 Therefore, so that the inner peripheral surface of the thin elastic tube section 41 is the insertion portion 2 of the tip 3, into close contact with the outer peripheral surface of the curved portion 4 and the flexible tube 5. そして、前述の実施形態と同様に、マルチルーメンチューブ31内の空気を吸引することにより取付部10が挿入部2の先端部3及び可撓性管5に吸着することになる。 Then, as with the previous embodiments, the mounting portion 10 is to be adsorbed to the tip portion 3 and the flexible tube 5 of the insertion portion 2 by sucking air of the multi-lumen tube 31. この状態においては、薄肉弾性管部41が、その柔軟性により湾曲部4の湾曲動作に追従して曲がることになる。 In this state, the thin elastic tube section 41, so that the bend to follow the bending operation of the bending portion 4 by its flexibility.

また、この薄肉弾性管部41を挿入部2から取り外す際には、図18(c)に示すように、つまみ43を薄肉弾性管部41からめくるように引っ張り、2本の切取線42において薄肉弾性管部41を切断し、これら2本の切取線42に挟まれた剥離部47を薄肉弾性管部41から引き離す。 Further, when detaching the thin-walled elastic tube part 41 from the insertion portion 2, as shown in FIG. 18 (c), pulling to turn the knob 43 a thin elastic tube section 41, thin elastic in tear line 42 of the two cutting the tube portion 41, separating the stripping portion 47 sandwiched between the tear line 42 of two thin-walled elastic tube section 41. これにより薄肉弾性管部41の挿入部2への密着状態が解除される。 Thus the adhesion state of the insertion portion 2 of the thin-walled elastic tube portion 41 is released. また、取付部10を先端部3及び可撓性管5から引き離す際には、空気の吸引を解除する。 Further, when separating the attachment portion 10 from the tip 3 and the flexible tube 5, to release the suction of air.

この外付けチャンネル40によれば、薄肉弾性管部41が湾曲部4の全長及び全周にわたって固定されるため、内視鏡1の挿入部2に対する固定力を確実に向上させることができる。 According to the external channel 40, since the thin-walled elastic tube 41 is fixed over the entire length and the entire circumference of the curved portion 4, it is possible to reliably improve the fixing force against the insertion portion 2 of the endoscope 1.
また、外付けチャンネル組付キット46を使用することにより、外付けチャンネル40の内視鏡1への装着を簡単に行うことができる。 Further, by using the external channel assembly kit 46, it is possible to perform the mounting of the endoscope 1 of the external channel 40 easily.
さらに、大きな湾曲動作を行う湾曲部4の外周面が、薄肉弾性管部41により被覆保護されているため、湾曲部4が薄肉状に形成されていても、傷ついたり破損することを容易に防止できる。 Further, the outer peripheral surface of the curved portion 4 for a large bending operation, because it is covered and protected by the thin elastic tube section 41, also curved portion 4 be formed in thin-walled, easily prevented from damaged or corrupted it can.
また、薄肉弾性管部41に、切取線42及びつまみ43を形成しておくことにより、薄肉弾性管部41を容易に取り外すことができると共に、この取り外しの際に挿入部2が傷つくことを防止できる。 Further, the thin-walled elastic tube section 41, by forming a cutting line 42 and knob 43, it is possible to easily remove the thin elastic tube section 41, it is possible to prevent the insertion portion 2 damaged during the removal .

なお、上述した第2の実施形態においては、2本の切取線42を形成するとしたが、これに限ることはなく、少なくとも1本の切取線が形成されていればよい。 In the second embodiment described above, has been to form a cutting line 42 of the two, not limited to this, it is sufficient that at least one cutting line is formed.
また、外付けチャンネル40は、1本のマルチルーメンチューブ31を備えるとしたが、これに限ることはなく、処置具等を挿通させる可撓性チューブ8と、吸引耐性可撓性チューブ9とを独立して形成し、取付部10により連結するとしても構わない。 Further, the external channel 40 is set to include the multi-lumen tube 31 of one, not limited to this, and the flexible tube 8 for inserting the treatment tool or the like, and a suction resistance flexible tube 9 independently formed, it may be connected by attaching portion 10.

なお、上述した全ての実施形態において、可撓性チューブ8、マルチルーメン部材23やマルチルーメンチューブ31が、送気、送水、吸引の流体通路として利用される場合には、取付部10やマルチルーメン部材23、マルチルーメンチューブ31のチャンネル開口部11にノズルを形成するとしてもよい。 In all the embodiments described above, the flexible tube 8, the multi-lumen member 23 and a multi-lumen tube 31, air, water, when utilized as a fluid passage suction, mounting portion 10 and the multi-lumen member 23 may be formed a nozzle channel opening 11 of the multi-lumen tube 31.
また、可撓性チューブ8、マルチルーメン部材23やマルチルーメンチューブ31には、各種処置具を挿通させる挿通路や送気、送水、吸引の流体通路として利用される可撓性管路が設けられるとしたが、これに限ることはなく、例えば、止血焼尺鉗子、内視鏡形状検出装置プローブ、把持鉗子、注射針等、特定の機能を有している付加機能部が一体的に固定されるとしても構わない。 Further, the flexible tube 8, the multi-lumen member 23 and the multi-lumen tube 31, the insertion path and air for inserting various treatment instruments, water supply, a flexible conduit which is utilized as a fluid passage of the suction is provided and was, but not limited to this, for example, hemostatic baked long forceps, endoscope shape detecting apparatus probes, forceps, needle, etc., is an additional function unit having a specific function are secured integrally Rutoshite may be. この構成の場合には、内視鏡に付加する機能を予め適宜選択することで、各種処置具等を挿通させる共通の管路が不要となるため、取付部10に固定される付加機能部の外径を細く形成することが可能となる。 With this arrangement, by pre appropriately select a function to be added to the endoscope, since the common conduit for inserting various treatment instruments, etc. is not required, the additional function unit that is fixed to the mounting portion 10 it is possible to make the outer diameter formed thin.

以上、本発明の実施形態について図面を参照して詳述したが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等も含まれる。 Although the embodiments of the present invention have been described in detail with reference to the drawings, specific configurations are not limited to this embodiment, design changes without departing from the scope of the present invention are also included.

この発明の第1の実施形態に係る内視鏡を示す概略斜視図である。 Is a schematic perspective view showing an endoscope according to a first embodiment of the present invention. この発明の第1の実施形態に係る外付けチャンネルを示す拡大斜視図である。 Is an enlarged perspective view showing an external channel according to a first embodiment of the present invention. 図2の外付けチャンネルにおいて、取付部を示す拡大斜視図である。 In external channel of FIG. 2 is an enlarged perspective view showing a mounting portion. 図2の外付けチャンネルにおいて、取付部の内部を示す概略斜視図である。 In external channel of FIG. 2 is a schematic perspective view showing the inside of the mounting portion. 図2の外付けチャンネルを図1の内視鏡に取り付けた状態を示す拡大斜視図である。 The external channel of FIG. 2 is an enlarged perspective view showing a state attached to the endoscope of FIG. この発明の他の実施形態に係る外付けチャンネルの切替弁周辺を示す拡大斜視図である。 It is an enlarged perspective view showing a switching valve near external channel according to another embodiment of the present invention. この発明の他の実施形態に係る外付けチャンネルの取付部を示す拡大斜視図である。 Is an enlarged perspective view showing a mounting portion of the external channel according to another embodiment of the present invention. この発明の他の実施形態に係る外付けチャンネルを示す拡大斜視図である。 Is an enlarged perspective view showing an external channel according to another embodiment of the present invention. この発明の他の実施形態に係る外付けチャンネルを示す拡大斜視図である。 Is an enlarged perspective view showing an external channel according to another embodiment of the present invention. 図9の外付けチャンネルの内部を示す概略斜視図である。 It is a schematic perspective view showing the inside of the external channel of FIG. この発明の他の実施形態に係る外付けチャンネル及び内視鏡を示しており、(a)は外付けチャンネルと挿入部との位置関係を示す概略斜視図、(b)は可撓性管の概略断面図、(c)及び(d)は外付けチャンネルの概略斜視図である。 Shows the external channel and the endoscope according to another embodiment of the present invention, (a) represents a schematic perspective view showing the positional relationship between the external channel insertion portion, (b) is a flexible tube schematic cross-sectional view, (c) and (d) is a schematic perspective view of the external channels. この発明の他の実施形態に係る外付けチャンネルを示しており、(a)は拡大斜視図、(b)は内視鏡に取り付けた状態の拡大斜視図である。 Shows an external channel according to another embodiment of the present invention, is an enlarged perspective view of (a) state enlarged perspective view, (b) it is attached to an endoscope. この発明の他の実施形態に係る外付けチャンネルと内視鏡との取付状態を示す拡大斜視図である。 It is an enlarged perspective view showing a mounting state of the external channel and the endoscope according to another embodiment of the present invention. この発明の他の実施形態に係る外付けチャンネルと内視鏡との取付状態を示す拡大斜視図である。 It is an enlarged perspective view showing a mounting state of the external channel and the endoscope according to another embodiment of the present invention. この発明の他の実施形態に係る内視鏡を示す拡大斜視図である。 Is an enlarged perspective view showing an endoscope according to another embodiment of the present invention. この発明の他の実施形態に係る外付けチャンネルを示す拡大斜視図である。 Is an enlarged perspective view showing an external channel according to another embodiment of the present invention. 図16の外付けチャンネルを取り付ける内視鏡を示す拡大斜視図である。 Is an enlarged perspective view showing an endoscope attaching the external channel of Figure 16. この発明の第2の実施形態に係る外付けチャンネルを示しており、(a)は内視鏡への取り付ける前の拡大斜視図、(b)は内視鏡に取り付けた状態の拡大斜視図、(c)は内視鏡から取り外す際の拡大斜視図である。 Shows an external channel according to a second embodiment of the present invention, (a) shows the enlarged perspective view before attachment to the endoscope, (b) is an enlarged perspective view of a state attached to the endoscope, (c) is an enlarged perspective view when removed from the endoscope.

符号の説明 DESCRIPTION OF SYMBOLS

1 内視鏡 2 挿入部 7,21,22,36,40 外付けチャンネル 8 可撓性チューブ(可撓性管路) 1 endoscope 2 inserted portion 7,21,22,36,40 external channel 8 flexible tube (flexible conduit)
9 吸引耐性可撓性チューブ(吸引管路) 9 suction-resistant flexible tube (suction line)
10 取付部(固定部) 10 mounting portion (fixing portion)
12,26 固定面 13 開口部 19 シリンジ(吸引機構) 12,26 fixed surface 13 opening 19 syringe (suction mechanism)
23 ルーメン部材(固定部) 23 lumen member (fixing portion)
24 ルーメン(可撓性管路) 24 lumen (flexible conduit)
25 吸引孔(吸引用管路) 25 suction hole (suction conduit)
27 開口穴(開口部) 27 opening hole (opening)
29,30 平坦面(外面) 29, 30, flat surface (outer surface)

Claims (3)

  1. 可撓性を有する内視鏡の挿入部に沿って併設する外付けチャンネルであって、 A external channel which houses along the insertion portion of an endoscope having a flexible,
    前記挿入部に沿って配し、内視鏡に機能を付加する付加機能部と、 Disposed along said insertion portion, and the additional function unit to add a function to the endoscope,
    該付加機能部に設けた固定部と、 A fixed portion provided in the additional function unit,
    該固定部に形成され、前記挿入部の外面に隙間無く当接する固定面と、 Is formed in the fixed part, and a fixing surface which abuts without clearance an outer surface of the insertion portion,
    該固定面から前記外面側に開口する開口部と、 An opening that opens to the outer surface side from the fixing surface,
    該開口部に連通し、前記挿入部に沿って配した可撓性を有する吸引用管路と、 Communicating with the opening, a suction conduit having an arranged along the insertion portion flexible,
    該吸引用管路に接続され、前記開口部から空気を吸引する吸引機構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。 Is connected to the intake cited conduit, external channel for an endoscope, characterized in that it comprises a suction mechanism for sucking air from the opening.
  2. 前記付加機能部が、可撓性を有し、各種処置具を挿通させる挿通路や送気、送水、吸引の流体通路として利用される可撓性管路を備えることを特徴とする請求項1に記載の外付けチャンネル。 The additional function unit has flexibility, the insertion path and air for inserting various treatment instruments, water supply, according to claim 1, characterized in that it comprises a flexible conduit which is utilized as a fluid passage of the suction external channel described.
  3. 請求項1又は請求項2に記載の外付けチャンネルを備えることを特徴とする内視鏡装置。 The endoscope apparatus, characterized in that it comprises an external channel according to claim 1 or claim 2.

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Effective date: 20070109