JP2005131163A - External channel for endoscope - Google Patents

External channel for endoscope Download PDF

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JP2005131163A
JP2005131163A JP2003371740A JP2003371740A JP2005131163A JP 2005131163 A JP2005131163 A JP 2005131163A JP 2003371740 A JP2003371740 A JP 2003371740A JP 2003371740 A JP2003371740 A JP 2003371740A JP 2005131163 A JP2005131163 A JP 2005131163A
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endoscope
external channel
opening
tube
portion
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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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<P>PROBLEM TO BE SOLVED: To provide an external channel where a damage to a mucous membrane by the external channel is suppressed when inserting an endoscope having the extending external channel into a celom. <P>SOLUTION: This external channel has: a flexible tube 41 provided to attachably and detachably extend to an endoscope insertion part 4 inserted to a celom; and a mantled part 42 which covers the tip of the flexible tube 41 and where first and second lateral opening parts 54A and 54B are formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、内視鏡用の外付けチャンネル及びこれを有する内視鏡に関する。 The present invention relates to an endoscope external with channels and this for an endoscope.

一般に、内視鏡により体腔内の生体組織に対して処置を施す場合には、内視鏡に設けられた内視鏡チャンネル内に処置具などを挿通して、例えば、生体組織の切除や出血部位の止血などの所定の処置を行っている。 Generally, when applying treatment to the living tissue in a body cavity by the endoscope, is inserted and the treatment instrument in an endoscope within a channel provided in the endoscope, for example, biological tissue ablation or bleeding and it performs a predetermined treatment, such as site of hemostasis.
ここで、生体組織の状態や処置の仕方において様々な種類の処置具を用いる必要があり、使用している内視鏡チャンネルの内径よりも大きい外径の処置具などを用いる場合がある。 Here, it is necessary to use various kinds of the treatment instrument in the manner of status and treatment of the living tissue, there is a case of using such a treatment instrument of larger outer diameter than the inner diameter of the endoscope channel used. このような場合に、体腔内に挿入される内視鏡の内視鏡挿入部に沿って必要に応じて着脱可能に取り付けられ、処置具の挿入をガイドする内視鏡用の外付けチャンネルが提案されている(例えば、特許文献1参照。)。 In such a case, if necessary along the endoscope insertion portion of the endoscope to be inserted into a body cavity detachably attached, an external channel for an endoscope for guiding the insertion of the treatment instrument It has been proposed (e.g., see Patent Document 1.).

この外付けチャンネル200は、図10に示すように、先端側に外付けチャンネル開口部200Aが形成された長尺で可撓性を有するチューブで構成され、内視鏡の内視鏡挿入部201に対して医療用テープ202などで延設されている。 The external channel 200, as shown in FIG. 10, is constituted by a flexible tube with elongated external channel opening 200A is formed on the distal end side, the inner of the endoscope insertion tube 201 It is extended in such medical tape 202 against.
特開2002−143078号公報 (第1図) JP 2002-143078 JP (FIG. 1)

しかしながら、上記従来の外付けチャンネルは、外付けチャンネル200が内視鏡先端部203の外周部側に突出しているため、内視鏡201を外付けチャンネル200と共に体腔内深部に挿入していく過程において、外付けチャンネル200の先端が粘膜を擦ってしまい、粘膜をすくい取るようにして粘膜を損傷させる虞があった。 However, the process conventional external channel is going to insert for external channel 200 is projected to the outer peripheral portion side of the endoscope tip portion 203, the endoscope 201 into a body cavity deep with external channel 200 in the tip of the external channel 200 will rub the mucosa, there is a possibility that as skim mucosal damage the mucosa.
また、外付けチャンネル開口部200Aは、内視鏡201の観察範囲に対して死角にあるため、例えば、外付けチャンネル200を出血時の血液吸引や体液を吸引するときに使用する場合、体腔外に設けられて外付けチャンネル200に接続された吸引機の陰圧により吸引を行うため、外付けチャンネル200の外付けチャンネル開口部200Aに粘膜が巻き込まれ、新たな出血を発生してしまう虞があった。 Further, the external channel opening 200A is due to the blind spot with respect to the observation range of the endoscope 201, for example, if used when sucking the blood suction or fluid during bleeding external channel 200, the body cavity outside It provided for aspirating the negative pressure of the connected suction device to external channel 200, mucosa involved in external channel opening 200A of the external channel 200, the possibility that generates a new bleeding there were.

本発明は上記事情に鑑みてなされたものであり、外付けチャンネルを延設した内視鏡を体腔内に挿入する時に外付けチャンネルによる粘膜の損傷を抑制する外付けチャンネルを提供することを目的とする。 The present invention has been made in view of the above circumstances, it aims to provide a suppressing external channels mucosal damage due to external channel when inserting an endoscope to extend the external channel into the body cavity to.

本発明は、上記課題を解決するため以下の手段を採用する。 The present invention employs the following means for solving the above problems.
本発明にかかる外付けチャンネルは、体腔内に挿入される内視鏡挿入部に対して着脱可能に延設されるチューブと、該チューブの先端を覆い、該チューブと連通する連通孔が形成された外套部とを有することを特徴とする。 External channel according to the present invention includes a tube that is capable of extended detachable from the endoscope insertion portion to be inserted into a body cavity, covers the distal end of the tube, communicating holes communicating with said tube is formed and characterized in that it has a mantle.

この発明によれば、チューブの先端を外套部で覆うことによって、外付けチャンネルを内視鏡挿入部に延設させて体腔内に内視鏡を挿入させたときにチューブの先端が粘膜を擦ることなく滑らかに挿入される。 According to the present invention, by covering the tip of the tube mantle, the tip of the tube rubbing the mucosa when brought into extended the external channel in the endoscope insertion portion by inserting the endoscope into the body cavity It is smoothly inserted without. したがって、チューブの先端が粘膜を吸い取ることによる粘膜の損傷を回避できるので、粘膜の損傷や新たな出血が発生することを抑制できる。 Therefore, it is possible to avoid damaging the mucosa by the tip of the tube soak up mucosa can be suppressed mucosal damage and new bleeding occurs.

前記連通孔の開口部の面積が、前記チューブの先端に形成された開口部の面積よりも大きいことが好ましい。 The area of ​​the opening of the communication holes is preferably larger than the area of ​​the opening formed in the distal end of the tube.
この発明によれば、チューブの先端に形成された開口部の面積よりも連通孔の開口部の面積を大きくすることで、血液や体液などを吸引するときに、連通孔内に粘膜が巻き込まれて粘膜が損傷することを抑制できる。 According to the invention, by increasing the area of ​​the opening of the communication hole than the area of ​​the opening formed in the distal end of the tube, when sucked with blood or body fluids, mucous membranes involved in the communicating hole mucous membranes it is possible to suppress the damage Te.

また、本発明にかかる外付けチャンネルは、前記外套部の側面に、前記連通孔が形成されていることが好ましい。 Also, external channel according to the present invention, the side surface of the mantle, it is preferable that the communication hole is formed.
この発明によれば、連通孔が外套部の側面に形成されることで、この連通孔と粘膜との距離を十分に設けることができる。 According to the invention, by communicating holes are formed on the side surface of the mantle can be provided a distance between the communication hole and the mucosa sufficiently. これにより、吸引時の粘膜が連通孔の内部に吸い込まれにくくすることができる。 This makes it possible to mucosa upon suction is not easily drawn into the interior of the communicating hole.

本発明の外付けチャンネルによれば、チューブの先端を外套部で覆うことによって、内視鏡挿入時にチューブの先端が粘膜を擦って粘膜を吸い取ることによる粘膜の損傷を回避できるので、粘膜の損傷や新たな出血が発生することを抑制できる。 According to external channel of the present invention, by covering the tip of the tube mantle, the tip of the tube when the endoscope insertion can be avoided mucosal damage by blotting the mucosa by rubbing the mucosa, mucosal damage and it is possible to prevent the new bleeding occurs.

次に、本発明にかかる外付けチャンネル及び内視鏡の第1の実施形態について、図1及び図2を参照して説明する。 Next, a first embodiment of the external channel and the endoscope according to the present invention will be described with reference to FIGS.
本実施形態の外付けチャンネル1は、図1及び図2に示すように、内視鏡システム2の構成品である内視鏡3の内視鏡挿入部4の外表面に沿って取り付けられるものである。 External channel 1 of the present embodiment, as shown in FIGS. 1 and 2, to be attached along the outer surface of the endoscope 3 of the endoscope insertion portion 4 is an endoscope system 2 of the components it is.

内視鏡システム2は、内視鏡3と、この内視鏡3に照明光を供給する光源装置5と、内視鏡3の撮像装置(図示略)を駆動させる電気信号及び撮像素子から伝送された電気信号を画像信号に生成するビデオプロセッサ6と、このビデオプロセッサ6により生成された画像信号を受信して内視鏡画像を表示するモニタ7と、処置具などを挿通可能な内視鏡チャンネル(図示略)及び後述する内視鏡側吸引チューブを介して体腔内の血液や体液などを吸引する内視鏡側吸引機8と、外付けチャンネル1及び後述する外付け側吸引チューブを介して同様に血液や体液などを吸引する外付けチャンネル側吸引機9とを備えている。 The endoscope system 2 includes an endoscope 3, a light source device 5 supplies illumination light to the endoscope 3, the transmission from the electrical signal and the image pickup device drives the image pickup device of the endoscope 3 (not shown) a video processor 6 for generating an electrical signal to an image signal, the monitor 7 which displays an endoscopic image by receiving image signals generated by the video processor 6, can be inserted and treatment instrument for an endoscope an endoscope-side suction unit 8 that channels through the endoscope side suction tube (not shown) and later to suck such as blood and body fluids in the body cavity, via an external side suction tube to external channel 1 and later and an external channel side aspirator 9 for sucking the like as well as blood and body fluids Te.

内視鏡3は、体腔内に挿入される内視鏡挿入部4と、この内視鏡挿入部4の基端側に位置する操作部11と、この操作部11の側方から延出するユニバーサルコード12とを備えている。 The endoscope 3 includes an endoscope insertion portion 4 to be inserted into a body cavity, an operation portion 11 located on the proximal end side of the endoscope insertion portion 4, extending from the side of the operating portion 11 and a universal code 12. このユニバーサルコード12の基端側には、光源装置5に着脱自在に接続される内視鏡コネクタ13が設けられている。 This on the base end side of the universal cord 12, the endoscope connector 13 which is detachably connected to the light source device 5 is provided. また、この内視鏡コネクタ13からはビデオプロセッサ6に接続される電気コネクタを基端側に有する電気ケーブル14と、内視鏡側吸引機8に接続されて上述した内視鏡チャンネルを介して体腔内の血液や体液などを吸引する内視鏡側吸引チューブ15とが延出している。 Further, from the endoscope connector 13 through the endoscope channel as described above is connected to the electrical cable 14 having an electrical connector connected to the video processor 6 on the proximal side, the endoscope-side suction device 8 an endoscope-side suction tube 15 for sucking such as blood and body fluids in the body cavity is extended.

内視鏡挿入部4は、先端側から、硬質の内視鏡先端部21と、内視鏡先端部21の後端に設けられた湾曲自在の内視鏡湾曲部22と、この内視鏡湾曲部22の後端から内視鏡3を操作する操作部11までオレドメ部23を介して延びる長尺の内視鏡可撓部24とから構成されている。 The endoscope insertion portion 4, from the front end side, the rigid endoscope tip portion 21, a bendable endoscope bending portion 22 provided at a rear end of the endoscope tip portion 21, the endoscope and a rear end of the endoscope 3 extending through the Oredome unit 23 to the operation unit 11 for operating the elongated endoscope flexible portion 24. of the curved portion 22.
内視鏡先端部21には、対物光学系31及び対物光学系31による観察範囲に照明光を照射する2つの照明光学系32が配されている。 The endoscope tip portion 21, two illumination optical system 32 that irradiates illumination light to an observation range of the objective optical system 31 and the objective optical system 31 is disposed. なお、上述した撮像素子は、対物光学系31を構成している一部である。 The imaging element described above is a part constituting the objective optical system 31. また、光源装置5から供給された照明光は、照明光学系32から照射されるようになっている。 The illumination light supplied from the light source device 5, and is emitted from the illumination optical system 32. また、上述した内視鏡チャンネルの先端側開口部である内視鏡チャンネル開口部33が配されており、オレドメ部23と操作部11との間に設けられた処置具挿通口34に連通されている。 Also been arranged, the endoscope channel opening 33 is the tip side opening of the endoscope channel as described above, communicates with the treatment instrument insertion port 34 provided between the Oredome portion 23 and the operation unit 11 ing.

外付けチャンネル1は、内視鏡先端部21から内視鏡挿入部4に対して着脱可能に延設される長尺の可撓性チューブ(チューブ)41と、可撓性チューブ41の先端を覆う外套部42とを備えている。 External channel 1, the endoscope insertion portion 4 flexible tube (tubes) 41 elongated to extend detachable from the from the endoscope tip portion 21, the distal end of the flexible tube 41 and a mantle 42 covering.
可撓性チューブ41は、内視鏡挿入部4に沿って内視鏡挿入部4の外周面に、例えば医療用テープ43によって内視鏡挿入部4に対して着脱可能に固定されている。 Flexible tube 41, the outer peripheral surface of the endoscope insertion portion 4 along the endoscope insertion portion 4, for example, is detachably fixed to the endoscope insertion portion 4 by the medical tape 43.
また、可撓性チューブ41の基端側には三方活栓44が取り付けられ、外付けチャンネル1の軸方向に対して直角方向となるように外付け側吸引チューブ45を介して外付けチャンネル側吸引機9に接続されている。 Further, the base end side of the flexible tube 41 is attached a three-way stopcock 44, so as to be perpendicular to the axial direction of the external channel 1 via the external side suction tube 45 external channel side suction It is connected to the machine 9. また、可撓性チューブ41及び三方活栓44の他の三方活栓開口部44Aには逆支弁46が設けられている。 Also, check valve 46 is provided in addition to the three-way stopcock opening 44A of the flexible tube 41 and the three-way stopcock 44.

外套部42は、電気絶縁性の強い樹脂素材及びシリコンなどのゴム素材で形成されており、内視鏡先端部21の径方向に突出する突出部51と、突出部51の先端側に設けられて内視鏡先端部21の外周部に取り付けるための外套リング部52とを備えている。 Mantle 42 is formed of a rubber material, such as a strong resin material and a silicon electrically insulating, and the projection 51 projecting radially of the endoscope front end portion 21, provided on the distal end side of the protrusion 51 endoscope and a jacket ring 52 for attachment to the outer periphery of the distal end portion 21 in Te.
突出部51には、基端側に可撓性チューブ41が挿通される可撓性チューブ側開口部53と、可撓性チューブ41が挿通される軸方向に対して側方に設けられた第1及び第2側方開口部(連通孔)54A、54Bが設けられており、可撓性チューブ側開口部53と第1及び第2側方開口部54A、54Bとを連通する空洞55が形成されている。 The projecting portion 51 includes a flexible tube side opening 53 of the flexible tube 41 is inserted proximally, the provided laterally with respect to the axial direction of the flexible tube 41 is inserted 1 and the second lateral opening (hole) 54A, 54B are provided, the flexible tube side opening 53 and the first and second lateral opening 54A, the cavity 55 for communicating the 54B is formed It is.
なお、本実施形態では、外套部42の側方に第1及び第2側方開口部54A、54Bが形成されていたが、どちらか一方のみが形成されていてもよい。 In the present embodiment, the first and second lateral opening 54A on the side of the mantle 42, but 54B were formed, either alone may be formed.

なお、可撓性チューブ側開口部53は、可撓性チューブ41の外径とほぼ同一とされており、第1及び第2側方開口部54A、54Bの開口部面積が可撓性チューブ41の先端開口部であるチューブ開口部41Aの開口部面積よりも大きく形成されている。 Incidentally, the flexible tube side opening 53, a flexible outer diameter of the tube 41 and are substantially the same, the first and second side openings 54A, flexible opening area of ​​54B tubes 41 is formed larger than the opening area of ​​the tube opening 41A tip is an opening of the.
この突出部51の可撓性チューブ側開口部53に挿通された可撓性チューブ41は、樹脂や金属やゴムなどの硬質性を有する素材で形成された第1及び第2リング56A、56Bにより外套部42に固定されている。 Flexible tube 41 flexible inserted through the tube side opening 53 of the projecting portion 51, first and second ring 56A is formed of a material having a hard property such as resin, metal or rubber, the 56B It is fixed to the mantle 42.

突出部51の先端側には、内視鏡先端部21の先端に向かって傾斜している傾斜面51Aが形成されている。 The distal end side of the projecting portion 51, the inclined surface 51A is formed which is inclined toward the distal end of the endoscope tip portion 21.
外套リング部52の内径は、外套リング部52を内視鏡先端部21に取り付けた際に内視鏡先端部21から脱落しないで外套部42を固定できる程度に内視鏡先端部21の外径より若干大きめに設定されており、先端に内視鏡先端部21の外径よりも小さいフランジ部52Aが形成されている。 The inner diameter of the mantle ring portion 52, the outer tip of the endoscope 21 to the extent that can be fixed mantle 42 without falling off from the endoscope tip portion 21 when fitted with a mantle ring portion 52 in the endoscope tip portion 21 diameter are slightly larger set than, smaller flange portion 52A than the outer diameter of the endoscope distal end portion 21 is formed at the tip.

次に、このように構成された外付けチャンネル1を内視鏡3に取り付けて使用する場合について説明する。 Next, the case of using mounted thus configured external channel 1 to the endoscope 3.
まず、外付けチャンネル1を内視鏡3に装着する。 First, mounting the external channel 1 to the endoscope 3. すなわち、可撓性チューブ41を内視鏡挿入部4に沿って配置した状態で、医療用テープ43などで固定する。 That is, in the state in which the flexible tube 41 along the endoscope insertion portion 4 and fixed with medical tape 43. また同時に、外套リング部52を内視鏡先端部21に固定する。 At the same time, to secure the jacket ring portion 52 in the endoscope tip portion 21.

そして、外付けチャンネル1の基端側に三方活栓44を取り付け、外付けチャンネル1の軸方向に対して直角方向となるように外付け側吸引チューブ45を介して外付けチャンネル側吸引機9に接続する。 Then, the three-way stopcock 44 attached to the proximal end side of the external channel 1, the external channel side suction device 9 via the external side suction tube 45 so as to be perpendicular to the axial direction of the external channel 1 Connecting.
このようにすることで、外付け側吸引チューブ45が術中に何らかの理由によって外れた際に、可撓性チューブ41内を流通する血液や体液などが内視鏡3を操作している術者にかかってしまうことを回避できる。 In this way, when the external side suction tube 45 is deviated for some reason during surgery, the surgeon to such as blood or body fluids is operating the endoscope 3 that flows through the flexible tubing 41 You can avoid that it takes.
また、三方活栓44が、オレドメ部23の近傍に配置されることにより、三方活栓開口部44Aが処置具貫通口34の近傍となるので、三方活栓開口部44Aから外付けチャンネル1に処置具などを挿通させることを考えた場合に、術者の処置の利便性が向上する。 Further, the three-way stopcock 44, by being disposed in the vicinity of Oredome portion 23, since the three-way stopcock opening 44A is near the treatment instrument through hole 34, three-way stopcock from the opening portion 44A external to the channel 1 treatment instrument such as when considering that for inserting the, convenience is improved surgeon's treatment.

なお、三方活栓44の位置は外付けチャンネル側吸引機9が配置される場所と外付け側吸引チューブ45の長さとによっては、オレドメ部23の近傍にあるよりは内視鏡コネクタ13の近傍に配されるほうが外付け側吸引チューブ45との接続が容易になる場合もある。 The position of the three-way stopcock 44 is by the length of the location and the external side suction tube 45 to external channel side suction device 9 is disposed in the vicinity of the endoscope connector 13 than in the vicinity of Oredome 23 sometimes better disposed becomes easy to connect the external side suction tube 45. この場合、可撓性チューブ41は、図3(a)または(b)に示すように、術者の内視鏡操作の邪魔にならないように操作部11に対して余裕を持って迂回するように内視鏡3のユニバーサルコード12にテープ60などで固定することも考えられる。 In this case, the flexible tube 41, as shown in FIG. 3 (a) or (b), so as to bypass with a margin with respect to the operation unit 11 so as not to interfere with the endoscope operation of the operator it is also conceivable to fix with tape 60 to the universal cord 12 of the endoscope 3 in.
可撓性チューブ41を操作部11に対して迂回して配置する方法については三方活栓44がオレドメ部23の近傍に配されている場合においても同様である。 How to place a flexible tube 41 to bypass the operation unit 11 is the same even when the three-way stopcock 44 is disposed in the vicinity of the Oredome portion 23.

このようにして外付けチャンネル1を装着後、内視鏡挿入部4及び外付けチャンネル1を被検者の体腔内に挿入する。 After mounting the external channel 1 in this manner, to insert the endoscope insertion portion 4 and the external channel 1 into the body cavity of the subject. この際、操作部11を操作することにより、内視鏡湾曲部22を所望する方向に向けながら挿入することができる。 At this time, by operating the operation unit 11, an endoscope bending portion 22 can be inserted while towards the desired direction. このようにすることで、内視鏡挿入部4を円滑に体腔内に挿入することができると共に、観察したい所望位置に照明光学系32を介して照明光の照射を確実に行える。 By doing so, it is possible to insert the endoscope insertion portion 4 into smooth body cavity, reliably perform the irradiation of the illumination light through the illumination optical system 32 to the desired position to be observed.
このとき、可撓性チューブ41の先端が外套部42によって覆われていると共に、外套部42に内視鏡先端部21の先端に向かって傾斜する傾斜面51Aが形成されているので、可撓性チューブ41の先端が粘膜を擦ることなく滑らかに挿入できる。 At this time, the tip of the flexible tube 41 is covered by the mantle 42, the inclined surface 51A which is inclined toward the tip of the endoscope tip portion 21 in the mantle 42 is formed, flexible the tip of the sex tube 41 can be smoothly inserted without scraping the mucosa.

また、対物光学系31を介して撮像された電気信号は、ユニバーサルコード12及び電気ケーブル14を介してビデオプロセッサ6に送られ、このビデオプロセッサ6によって画像信号に変換される。 The electric signal captured through the objective optical system 31 is sent to the video processor 6 via the universal cord 12 and the electrical cable 14, it is converted into an image signal by the video processor 6. 変換された画像信号は、モニタ7に送られて観察像として表示される。 Converted image signal is displayed as an observation image is sent to the monitor 7. そして、術者は、モニタ7に表示される観察像により、内視鏡先端部21の先端が処置を行う生体組織に達したことを確認すると、モニタ7を見ながら内視鏡先端部21を生体組織の近傍に位置させる。 The surgeon, by observation image displayed on the monitor 7, the leading end of the endoscope front end portion 21 to have reached the biological tissue to perform the treatment, the endoscope tip portion 21 while watching the monitor 7 It is located in the vicinity of the biological tissue.

次に、この状態で、術者は所定の処置を行う。 Next, in this state, the operator performs a predetermined action. 例えば、外付けチャンネル側吸引機9により体腔内の血液や体液などを吸引することが可能である。 For example, it is possible by external channel side suction unit 9 for sucking such as blood and body fluids in the body cavity. このとき、第1及び第2側方開口部54A、54Bより吸引された血液や体液などは、可撓性チューブ41及び外付け側吸引チューブ45を介して外付けチャンネル側吸引機9に回収される。 At this time, the first and second side openings 54A, etc. aspirated blood and body fluids from 54B, is collected in the external channel side suction device 9 via a flexible tube 41 and the external side suction tube 45 that. ここで、第1及び第2側方開口部54A、54Bの開口部面積が、チューブ開口部41Aの開口部面積よりも大きく形成されているので、吸引時に粘膜を第1及び第2側方開口部54A、54Bに巻き込むことを抑制し、粘膜の損傷を回避する。 Here, the first and second side openings 54A, opening area of ​​54B is so formed to be larger than the opening area of ​​the tube opening 41A, the first and second lateral opening mucosa during suction parts 54A, suppressed to involve in 54B, to avoid damage of the mucosa.

このように、本実施形態の外付けチャンネル1及び内視鏡3によれば、可撓性チューブ41の先端側が外套42で覆われているので、可撓性チューブ41の先端が粘膜を擦ることによる粘膜の損傷を抑制できる。 Thus, according to the external channel 1 and the endoscope 3 of this embodiment, since the distal end side of the flexible tube 41 is covered with the mantle 42, the distal end of the flexible tube 41 rubs mucosal damage to the mucosa by can be suppressed.
また、外套部42に傾斜面51Aが形成されていることで、粘膜への損傷をより抑制することができると共に、外付けチャンネル1を内視鏡挿入部4に固定して体腔内に挿入した際に滑らかな挿入が行える。 Moreover, by the inclined face 51A is formed in the mantle 42, it is possible to further suppress damage to the mucosa was inserted into a body cavity to secure the external channel 1 to the endoscope insertion portion 4 It can be carried out smoothly inserted into the case.

また、外付けチャンネル開口部となる第1及び第2側方開口部54A、54Bが可撓性チューブ41の開口部面積よりも大きく形成され、突出部51の側面に設けられていることで、血液や体液などを吸引する際に、粘膜との距離が設けられていると共に開口部面積が大きいので粘膜の巻き込みリスクを低減できる。 In addition, by being first and second side openings 54A for the external channel opening, 54B is formed larger than the opening area of ​​the flexible tube 41, provided on the side surface of the projecting portion 51, when sucking the such as blood or body fluids, since a large opening area with the distance between the mucosa is provided can be reduced entrainment risk of mucosa. したがって、吸引による新たな出血の発生を抑制できる。 Therefore, it is possible to suppress the occurrence of new bleeding suction.
また、外套リング部52が設けられていることで、外付けチャンネル1をより確実に内視鏡先端部21に固定することができる。 Further, since the mantle ring portion 52 is provided, it is possible to fix the external channel 1 more reliably in the endoscope tip portion 21.

次に、本発明にかかる外付けチューブの第2の実施形態について図4を参照して説明する。 It will now be described with reference to FIG. 4, a second embodiment of the external tube of the present invention. なお、以下の説明において、上記実施形態において説明した構成要素には同一符号を付し、その説明は省略する。 In the following description, the same reference numerals are given to components described in the above embodiment, a description thereof will be omitted.
第2実施形態と第1実施形態との異なる点は、上述した第1の実施形態における外付けチャンネル1は、外套部42の側方に第1及び第2側方開口部54A、54Bが形成されていたのに対し、本実施形態にかかる外付けチャンネル100では、図4に示すように、外套部101の先端にも先端開口部(連通孔)103が形成されている点である。 The point of difference between the second embodiment and the first embodiment, external channel 1 in the first embodiment described above, the first and second lateral opening 54A on the side of the mantle 42, 54B is formed while had been, in the external channel 100 according to the present embodiment, as shown in FIG. 4, it is that also the tip opening at the tip of the mantle 101 (hole) 103 is formed.

すなわち、本実施形態の外付けチャンネル100は、外套部101の可撓性チューブ側開口部53に連通する空洞102が先端開口部103と、第1及び第2側方開口部54A、54Bとの三股分かれて形成されている。 That is, external channel 100 of the present embodiment, the cavity 102 communicating with the flexible tube side opening 53 of the mantle 101 and the distal end opening portion 103, first and second lateral opening 54A, and 54B It is formed separately triple branching. そして、外付けチャンネル100には、例えば鉗子104などの処置具が挿通可能となっている。 Then, the external channel 100, for example, the treatment instrument such as forceps 104 is enabled through.
なお、先端開口部103の開口部面積は、第1及び第2側方開口部54A、54Bと同様に、可撓性チューブ41の開口部面積よりも大きく形成されている。 The opening area of ​​the front end opening portion 103, first and second lateral opening 54A, similar to the 54B, is formed larger than the opening area of ​​the flexible tube 41.

このように、本実施形態の外付けチャンネル100によれば、外套部42に先端開口部103が形成されていることで鉗子104などの処置具を挿通することが可能となるので、外付けチャンネル100を用いたさまざまな処置を行うことができる。 Thus, according to the external channel 100 in the present embodiment, it becomes possible to insert the treatment instrument such as forceps 104 in the distal end opening 103 in the mantle 42 is formed, external channel it is possible to perform various treatments using 100.

次に、本発明にかかる外付けチャンネルの第3の実施形態について図5を参照して説明する。 It will now be described with reference to FIG. 5 a third embodiment of the external channel in accordance with the present invention. なお、以下の説明において、上記実施形態において説明した構成要素には同一符号を付し、その説明は省略する。 In the following description, the same reference numerals are given to components described in the above embodiment, a description thereof will be omitted.
第3実施形態と第1実施形態との異なる点は、上述した第1の実施形態における外付けチャンネル1は、外套部42の側方に第1及び第2側方開口部54A、54Bが形成されているのに対し、本実施形態にかかる外付けチャンネル110では、図5に示すように、外套部111の第1側方開口部54A及び第2側方開口部(図示略)にメッシュ112が設けられている点である。 The point of difference between the third embodiment and the first embodiment, external channel 1 in the first embodiment described above, the first and second lateral opening 54A on the side of the mantle 42, 54B is formed while being, in external channel 110 according to the present embodiment, as shown in FIG. 5, a mesh 112 on the first lateral opening 54A and the second side opening of the mantle 111 (not shown) in that is provided.

すなわち、本実施形態の外付けチャンネル110は、第1側方開口部54A及び第2側方開口部が金属や樹脂などで形成されたメッシュ112で覆われており、メッシュ112を介して血液や体液などを流通可能としている。 That is, external channel 110 of the present embodiment, the first lateral opening 54A and the second side opening is covered with a mesh 112 formed like a metal or a resin, blood Ya via the mesh 112 body fluids and is made possible distribution.

このように、本実施形態の外付けチャンネル110によれば、第1側方開口部54A及び第2側方開口部にメッシュ112が設けられていることで、より第1側方開口部54A及び第2側方開口部内に粘膜を巻き込むことが抑制される。 Thus, according to the external channel 110 in the present embodiment, since the mesh 112 is provided on the first side opening 54A and the second side opening, and more first lateral opening 54A engulfing mucosa is suppressed in the second side in the opening.

次に、本発明にかかる外付けチャンネルの第4の実施形態について図6を参照して説明する。 It will now be described with reference to FIG. 6, a fourth embodiment of the external channel in accordance with the present invention. なお、以下の説明において、上記実施形態において説明した構成要素には同一符号を付し、その説明は省略する。 In the following description, the same reference numerals are given to components described in the above embodiment, a description thereof will be omitted.
第4実施形態と第3実施形態との異なる点は、上述した第3の実施形態における外付けチャンネル110は、第1側方開口部54A及び第2側方開口部にメッシュ112が設けられていたのに対し、本実施形態にかかる外付けチャンネル120では、図6に示すように、外套部121に形成された第1側方開口部54A及び第2側方開口部がメッシュリング122で覆われている点である。 The difference between the fourth embodiment and the third embodiment, the external channel 110 in the third embodiment described above, the mesh 112 is provided on the first side opening 54A and the second side opening and whereas, in the external channel 120 according to the present embodiment, as shown in FIG. 6, the first lateral opening 54A and the second side opening formed in the mantle portion 121 is covered with a mesh ring 122 in that it cracks it.

すなわち、本実施形態の外付けチャンネル120は、上述したメッシュ112と同様に、金属や樹脂などで形成されて血液や体液などを流通可能とし弾力性を有する部材で形成され、突出部123及び内視鏡先端部21の外周面を覆っている。 That is, external channel 120 of the present embodiment, like the mesh 112 described above, is formed of a member having formed like a metal or a resin elasticity to allow circulation and blood or body fluid, the protrusions 123 and the inner endoscope covers the outer peripheral surface of the distal end portion 21.
また、突出部123の先端側には、内視鏡先端部21の先端に向かって曲率半径を有する球面123Aが形成されている。 Further, the distal end side of the protrusion 123, spherical 123A having a radius of curvature toward the distal end of the endoscope tip portion 21 are formed.

このように、本実施形態の外付けチャンネル120によれば、メッシュリング122によってより簡易的な構造で第1側方開口部54A及び第2側方開口部内への粘膜の巻き込みを抑制できると共に、内視鏡先端部21に対してより確実に固定できる。 Thus, according to the external channel 120 in the present embodiment, it is possible to suppress entrainment of the mucous membrane to the first side opening 54A and the second lateral opening portion with a simpler structure by the mesh ring 122, more reliably fixed to the endoscope leading end portion 21. また、球面123Aが形成されていることで、上述と同様に、外付けチャンネル120を内視鏡挿入部4に固定して体腔内に挿入した際に滑らかな挿入を行うことができ、粘膜を損傷することが抑制される。 Further, since the spherical surface 123A is formed, similarly to the above, by fixing the external channel 120 in the endoscope insertion portion 4 can perform smooth insertion when inserted into a body cavity, the mucosa it is suppressed from damage.

次に、本発明にかかる外付けチャンネルの第5の実施形態について図7を参照して説明する。 It will now be described with reference to FIG. 7, a fifth embodiment of the external channel in accordance with the present invention. なお、以下の説明において、上記実施形態において説明した構成要素には同一符号を付し、その説明は省略する。 In the following description, the same reference numerals are given to components described in the above embodiment, a description thereof will be omitted.
第5実施形態と第1実施形態との異なる点は、上述した第1の実施形態における外付けチャンネル1は、可撓性チューブ41の先端側が外套部42によって覆われていたのに対し、本実施形態にかかる外付けチャンネル130では、図7に示すように、可撓性チューブ131の先端側が、メッシュリングで形成された外套部132で覆われている点である。 The point of difference between the fifth embodiment and the first embodiment, while the external channel 1 in the first embodiment described above, the distal end side of the flexible tube 41 is covered by the mantle 42, the in external channel 130 according to the embodiment, as shown in FIG. 7, the distal end side of the flexible tube 131 is that covered by the mantle portion 132 formed in a mesh ring.

すなわち、本実施形態の外付けチャンネル130は、可撓性チューブ131の可撓性チューブ側開口部131Aが内視鏡先端部21に向けて形成されており、この可撓性チューブ131の先端が外套部132で覆われている。 That is, external channel 130 of the present embodiment, the flexible tube side opening 131A of the flexible tube 131 is formed toward the endoscope tip portion 21, the distal end of the flexible tube 131 is It covered with mantle 132.

このように、本実施形態の外付けチャンネル130によれば、上述した第1の実施形態よりも簡易的な構造で吸引時の粘膜巻き込みを防止できる。 Thus, according to the external channel 130 of the present embodiment can prevent the entrainment mucosa during aspiration by a simple structure than that of the first embodiment described above. また、このとき可撓性チューブ側開口部131Aが内視鏡先端部21に向けて形成されていることで、粘膜の巻き込みをより確実に回避できる。 Also, by this time the flexible tube side opening 131A is formed toward the endoscope tip portion 21, it can be avoided entrainment mucosal more reliably.

次に、本発明にかかる外付けチャンネルの第6の実施形態について図8を参照して説明する。 It will now be described with reference to FIG. 8, a sixth embodiment of the external channel in accordance with the present invention. なお、以下の説明において、上記実施形態において説明した構成要素には同一符号を付し、その説明は省略する。 In the following description, the same reference numerals are given to components described in the above embodiment, a description thereof will be omitted.
第6実施形態と第1実施形態との異なる点は、上述した第1の実施形態における外付けチャンネル1は、外套部42の側方に第1及び第2側方開口部54A、54Bが設けられていたのに対し、本実施形態にかかる外付けチャンネル140では、図8に示すように、外套部141が内視鏡先端部21に向かって設けられた先端開口部(連通孔)141Aが形成されている点である。 The point of difference between the sixth embodiment and the first embodiment, external channel 1 in the first embodiment described above, the first and second side openings 54A, 54B is provided on the side of the mantle 42 while had been, in the external channel 140 according to the present embodiment, as shown in FIG. 8, the distal end opening mantle 141 is provided toward the endoscope tip portion 21 (hole) 141A is it is that formed.

すなわち、本実施形態の外付けチャンネル140は、外套部141の内視鏡先端部21側に先端開口部141Aが形成され、外套部141と可撓性チューブ41とを接着剤を用いて可撓性チューブ固定パイプ142で連結することにより体液や血液などを流通可能な管路が形成されている。 That is, external channel 140 of the present embodiment, the distal end opening 141A in the endoscope tip portion 21 side of the mantle 141 is formed, the a mantle 141 and flexible tube 41 with an adhesive flexible such as body fluids and blood a possible pipeline flow is formed by connecting in sex tube fixed pipe 142.

このように、本実施形態の外付けチャンネル140によれば、外套部141に設けられた先端開口部141Aが内視鏡先端部21に向けて形成されており、直接粘膜に接触することがないため、より簡便な構造で吸引時の粘膜巻き込みを回避することができる。 Thus, according to the external channel 140 in the present embodiment, the front end opening portion 141A provided in the mantle 141 is formed toward the endoscope tip portion 21 does not contact directly the mucosa Therefore, it is possible to avoid entrainment mucosa during suction in a more simple structure.

なお、本発明の技術範囲は上記実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 The technical scope of the present invention is not limited to the above embodiment, it is possible to add various modifications without departing from the scope of the present invention.
例えば、上記第1から第5実施形態において、外套部は外套リング部を有していたが、第6実施形態と同様に、例えば図9に示すように、外付けチャンネル150の外套部151と可撓性チューブ41とを接着剤を用いて可撓性チューブ固定パイプ142で連結し、外套部151と可撓性チューブ41とを一体構造としてそれを医療用テープ43で固定する構造であってもよい。 For example, in the fifth embodiment from the first, but mantle had mantle ring portion, similarly to the sixth embodiment, as shown in FIG. 9, the mantle 151 of the external channel 150 a flexible tube 41 with an adhesive coupled with a flexible tube fixed pipe 142, the a mantle 151 and flexible tube 41 to a structure for fixing it as a unitary structure with medical tape 43 it may be.
この構造とすることで、外套部151自体が外付けチャンネル150の内視鏡挿入部に対する固定強度は向上しないが、さまざまな外径を有する内視鏡挿入部であってもこの構造を有する外付けチャンネル150で対応することができるので、内視鏡挿入部への固定が容易となる。 With this structure, the outer having fixing strength mantle 151 itself for the endoscope insertion portion of the external channel 150 is not improved, the structure even endoscope insertion portion having a different outer diameter since it is possible to cope with attached channel 150, thereby facilitating the fixing of the endoscope insertion portion.

(付記項1) 体腔内に挿入される内視鏡挿入部に対して着脱可能に延設されるチューブと、該チューブの先端を覆い、該チューブと連通する連通孔が形成された外套部とを有することを特徴とする外付けチャンネル。 (Note 1) and a tube that extends detachable from the endoscope insertion portion to be inserted into a body cavity, covers the distal end of the tube, and a mantle which communication holes are formed in communication with the tube external channels and having a.

(付記項2) 前記連通孔の開口部の面積が、前記チューブの先端に形成された開口部の面積よりも大きいことを特徴とする付記項1に記載の外付けチャンネル。 (Note 2) area of ​​the opening of the communication hole, external channel according to Additional Item 1, wherein greater than the area of ​​the opening formed in the distal end of the tube.

(付記項3) 前記外套部の側面に、前記連通孔が形成されていることを特徴とする付記項1または2に記載の外付けチャンネル。 On the side surface of the (Additional Item 3) The mantle, external channel according to Additional Item 1 or 2, wherein the communication hole is formed.

(付記項4) 前記外套部に、前記内視鏡挿入部の先端に向かって傾斜する傾斜面が形成されていることを特徴とする付記項1から3のいずれか1項に記載の外付けチャンネル。 To (Note 4) The mantle, external according to any one of Additional Item 1 3, characterized in that the inclined surface inclined toward the distal end of the endoscope insertion portion is formed Channel.

この発明によれば、外套部に内視鏡挿入部の先端に向かって傾斜する傾斜面を設けることで、外付けチャンネルを内視鏡挿入部に延設させて体腔内に内視鏡を挿入させたときに、より滑らかに外付けチャンネルを挿入することができるため、粘膜に対する損傷をより低減できる。 According to the present invention, by providing an inclined surface inclined toward the distal end of the endoscope insertion portion in the mantle, insert the endoscope is extended the external channel in the endoscope insertion portion into a body cavity when brought into, it is possible to more smoothly insert the external channel can be further reduced damage to the mucosa.

(付記項5) 前記外套部が、内視鏡先端部の外周面に前記外套部を固定するリング部を有することを特徴とする付記項1から4のいずれか1項に記載の外付けチャンネル。 (Additional Item 5) The mantle is, external channel according Appendixes claim 1 in any one of 4, characterized in that it comprises a ring portion for fixing the mantle on the outer circumferential surface of the endoscope front end portion .

この発明によれば、リング部を内視鏡先端部の外周面に固定することによって、内視鏡先端部に対して確実に外付けチャンネルを固定することができる。 According to the invention, by fixing the outer peripheral surface of the endoscope tip portion of the ring portion, it is possible to reliably fix the external channel with respect to the endoscope front end portion.

(付記項6) 付記項1から5のいずれか1項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。 An endoscope, characterized in that it comprises an external channel according to any one of (Additional Item 6) according to Note 1 5.

この発明によれば、チューブの先端側が外套部で覆われているので、外付けチューブを内視鏡挿入部に延設して、体腔内に挿入するときに粘膜に対する損傷を低減できる。 According to the present invention, since the distal end side of the tube is covered with the mantle, and extends the external tube to the endoscope insertion portion can reduce damage to mucosal when inserted into a body cavity.

本発明にかかる第1の実施形態における内視鏡システムを示すもので、(a)は概略図、(b)は三方活栓近傍の拡大図である。 It shows an endoscope system in a first embodiment according to the present invention, (a) is a schematic view, (b) is an enlarged view of the vicinity three-way stopcock. 本発明にかかる第1の実施形態における外付けチューブ及び内視鏡を示すもので、(a)は斜視図、(b)は外付けチャンネルの断面図である。 Shows the external tube and the endoscope in the first embodiment according to the present invention, (a) is a perspective view, a cross-sectional view of (b) is an external channel. 本発明にかかる第1の実施形態における外付けチャンネル及び内視鏡の配置を示す概略図である。 It is a schematic view showing the arrangement of external channel and the endoscope in the first embodiment according to the present invention. 本発明にかかる第2の実施形態における外付けチャンネルを示すもので、(a)は断面図、(b)は斜視図である。 It shows the external channel in the second embodiment according to the present invention, (a) is a cross-sectional view, (b) is a perspective view. 本発明にかかる第3の実施形態における外付けチャンネルを示す斜視図である。 Is a perspective view showing the external channel in the third embodiment according to the present invention. 本発明にかかる第4の実施形態における外付けチャンネルを示す側面図である。 Is a side view showing the external channel in the fourth embodiment according to the present invention. 本発明にかかる第5の実施形態における外付けチャンネルを示す側面図である。 Is a side view showing the external channel in the fifth embodiment of the present invention. 本発明にかかる第6の実施形態における外付けチャンネルを示すもので、(a)は軸方向断面図、(b)は(a)におけるA−A矢視断面図である。 Shows the external channel in the sixth embodiment of the present invention, (a) shows the axial cross-section, (b) is an A-A arrow sectional view in (a). 本発明にかかる他の形態における外付けチャンネルを示す断面図である。 It is a cross-sectional view showing the external channel in such other forms of the present invention. 従来の外付けチャンネルを示す斜視図である。 It is a perspective view showing a conventional external channel.

符号の説明 DESCRIPTION OF SYMBOLS

1、100、110、120、130、140、150 外付けチャンネル3 内視鏡4 内視鏡挿入部21 内視鏡先端部41、131 可撓性チューブ(チューブ) 1,100,110,120,130,140,150 external channel 3 Endoscope 4 endoscope insertion portion 21 distal end of the endoscope 41,131 flexible tube (tube)
42、101、111、121、132、151 外套部54A 第1側方開口部(連通孔) 42,101,111,121,132,151 mantle 54A first side opening (hole)
54B 第2側方開口部(連通孔) 54B second side opening (hole)
103、141A 先端開口部(連通孔) 103,141A distal opening (hole)

Claims (3)

  1. 体腔内に挿入される内視鏡挿入部に対して着脱可能に延設されるチューブと、 A tube that extends detachable from the endoscope insertion portion to be inserted into a body cavity,
    該チューブの先端を覆い、該チューブと連通する連通孔が形成された外套部とを有することを特徴とする外付けチャンネル。 Covering the distal end of the tube, an external channel and having a mantle which communication holes are formed in communication with the tube.
  2. 前記連通孔の開口部の面積が、前記チューブの先端に形成された開口部の面積よりも大きいことを特徴とする請求項1に記載の外付けチャンネル。 External channel according to claim 1, wherein the area of ​​the opening of the communication hole, being larger than the area of ​​the opening formed in the distal end of the tube.
  3. 前記外套部の側面に、前記連通孔が形成されていることを特徴とする請求項1または2に記載の外付けチャンネル。 A side surface of the mantle, external channel according to claim 1 or 2, wherein the communication hole is formed.
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