JP2007296054A - Endoscope device - Google Patents

Endoscope device Download PDF

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JP2007296054A
JP2007296054A JP2006125684A JP2006125684A JP2007296054A JP 2007296054 A JP2007296054 A JP 2007296054A JP 2006125684 A JP2006125684 A JP 2006125684A JP 2006125684 A JP2006125684 A JP 2006125684A JP 2007296054 A JP2007296054 A JP 2007296054A
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side ring
end side
distal end
balloon
proximal end
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JP4836653B2 (en
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Toshiyuki Ikeda
利幸 池田
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Fujinon Corp
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Fujinon Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an endoscope device, in which an endoscope is prevented from being damaged at a fixture position at an end of a balloon. <P>SOLUTION: The endoscope device is provided with the endoscope 10 having an insert part 12, the balloon 60 formed roughly in a cylindrical form to which the insert part 12 is inserted, and a tip side ring 61 and a base end side ring 62 respectively engaged outside a tip part 60A and a base end part 60B of the balloon 60. Inner diameter D2 of the base end side ring 62 is formed to be smaller than inner diameter D1 of the tip side ring 61. Fastening force of the base end side ring 62 is smaller than fastening force by the tip side ring 61. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は内視鏡装置に係り、特に小腸や大腸などの深部消化管に挿入部を挿入して観察する内視鏡装置に関する。   The present invention relates to an endoscope apparatus, and more particularly to an endoscope apparatus that observes by inserting an insertion portion into a deep digestive tract such as a small intestine or a large intestine.

内視鏡の挿入部を小腸などの深部消化管に挿入する場合、単に挿入部を押し入れていくだけでは、腸管の複雑な屈曲のために挿入部の先端に力が伝わりにくく、深部への挿入は困難である。例えば、挿入部に余分な屈曲や撓みが生じると、挿入部をさらに深部に挿入することができなくなる。そこで、内視鏡の挿入部に挿入補助具を被せて体腔内に挿入し、この挿入補助具で挿入部をガイドすることによって、挿入部の余分な屈曲や撓みを防止する方法が提案されている。   When inserting the insertion part of the endoscope into the deep digestive tract such as the small intestine, simply pushing the insertion part makes it difficult for force to be transmitted to the distal end of the insertion part due to the complicated bending of the intestinal tract. Have difficulty. For example, if excessive bending or bending occurs in the insertion portion, the insertion portion cannot be inserted further deeper. Therefore, a method has been proposed in which an insertion aid is put on the insertion portion of the endoscope and inserted into the body cavity, and the insertion portion is guided by this insertion aid to prevent excessive bending or bending of the insertion portion. Yes.

特許文献1には、内視鏡の挿入部の先端部に第1バルーンを設けるとともに、挿入補助具(オーバーチューブまたはスライディングチューブともいう)の先端部に第2バルーンを設けた内視鏡装置が記載されている。第1バルーンや第2バルーンは、膨張させることによって、挿入部や挿入補助具を小腸等の腸管内に固定させることができる。したがって、第1バルーンや第2バルーンの膨張、収縮を繰り返しながら、挿入部と挿入補助具を交互に挿入することによって、挿入部を小腸等の複雑に屈曲した腸管の深部に挿入することができる。
特開2005−230083号公報
Patent Document 1 discloses an endoscope apparatus in which a first balloon is provided at a distal end portion of an insertion portion of an endoscope and a second balloon is provided at a distal end portion of an insertion assisting tool (also referred to as an overtube or a sliding tube). Are listed. By inflating the first balloon and the second balloon, the insertion portion and the insertion aid can be fixed in the intestinal tract such as the small intestine. Therefore, by inserting the insertion portion and the insertion aid alternately while repeating the expansion and contraction of the first balloon and the second balloon, the insertion portion can be inserted into a deep portion of the intestinal tract that is bent in a complicated manner, such as the small intestine. .
Japanese Patent Laid-Open No. 2005-230083

ところで、特許文献1は、バルーンが内視鏡の湾曲部にかかって装着されているため、バルーンの端部の固定位置で湾曲部の被覆部材(アングルゴム)が圧迫されて損傷しやすいという問題があった。アングルゴムは、湾曲部を高い湾曲性能に維持するために機械的強度が比較的弱く、圧迫されることによって損傷しやすいという問題がある。   By the way, in Patent Document 1, since the balloon is mounted on the bending portion of the endoscope, the covering member (angle rubber) of the bending portion is easily pressed and damaged at the fixing position of the end portion of the balloon. was there. The angle rubber has a problem that its mechanical strength is relatively weak in order to maintain the bending portion with high bending performance, and it is easily damaged by being pressed.

本発明はこのような事情に鑑みてなされたもので、バルーンの端部の固定位置において内視鏡が損傷することを防止できる内視鏡装置を提供することを目的とする。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide an endoscope apparatus that can prevent the endoscope from being damaged at the fixed position of the end of the balloon.

請求項1に記載の発明は前記目的を達成するために、挿入部を有する内視鏡と、略筒状に形成されて前記挿入部が挿通されるバルーンと、前記バルーンの先端部及び基端部にそれぞれ外嵌される先端側リング部材及び基端側リング部材とを備え、前記先端側リング部材及び基端側リング部材によって前記バルーンの先端部及び基端部が締め付けられて前記挿入部に固定される内視鏡装置において、前記先端側リング部材が前記先端部を締め付ける締付力と、前記基端側リング部材が前記基端部を締め付ける締付力とが異なることを特徴とする。   In order to achieve the above object, the invention according to claim 1 is an endoscope having an insertion portion, a balloon formed in a substantially cylindrical shape and through which the insertion portion is inserted, a distal end portion and a proximal end of the balloon A distal end side ring member and a proximal end side ring member that are respectively fitted on the respective portions, and the distal end portion and the proximal end portion of the balloon are tightened by the distal end side ring member and the proximal end side ring member to the insertion portion. In the endoscope apparatus to be fixed, the tightening force by which the distal end side ring member tightens the distal end portion is different from the tightening force by which the proximal end side ring member tightens the proximal end portion.

請求項1に記載の発明によれば、バルーンの先端部の締付力と基端部の締付力が異なるので、それぞれの固定位置における挿入部の構成(被覆部材の材質、強度、外径寸法など)が異なる場合にも、バルーンを確実に、且つ、内視鏡を損傷することなく固定することができる。   According to the first aspect of the present invention, since the tightening force of the distal end portion of the balloon is different from the tightening force of the proximal end portion, the structure of the insertion portion at each fixed position (material, strength, outer diameter of the covering member) Even when the dimensions are different, the balloon can be fixed securely and without damaging the endoscope.

請求項2に記載の発明は請求項1の発明において、前記内視鏡の挿入部には湾曲操作される湾曲部が設けられ、該湾曲部に前記バルーンの先端部又は基端部の一方が配置されるとともに、該湾曲部に配置された先端部又は基端部の一方が、該先端部又は基端部の他方よりも前記締付力が小さいことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, the insertion portion of the endoscope is provided with a bending portion that is bent, and one of a distal end portion and a proximal end portion of the balloon is provided on the bending portion. It is characterized in that one of the distal end portion and the proximal end portion disposed at the curved portion has a smaller tightening force than the other of the distal end portion or the proximal end portion.

請求項2に記載の発明によれば、湾曲部に固定されるバルーンの端部の締付力が小さいので、湾曲部の被覆部材の損傷を防止することができる。   According to the invention described in claim 2, since the tightening force of the end portion of the balloon fixed to the bending portion is small, damage to the covering member of the bending portion can be prevented.

請求項3に記載の発明は請求項1又は2の発明において、前記先端側リング部材と前記基端側リング部材は、外嵌前の内径寸法が異なることを特徴とする。   According to a third aspect of the present invention, in the first or second aspect of the invention, the distal end side ring member and the proximal end side ring member are different in inner diameter before fitting.

請求項3に記載の発明によれば、外嵌前の先端側リング部材の内径寸法と外嵌前の基端側リング部材の内径寸法とが異なるので、外嵌後の先端側リング部材の締付力と外嵌後の基端側リング部材の締付力が異なる。したがって、バルーンの先端部と基端部とを異なる締付力で締め付け固定することができる。   According to the third aspect of the present invention, since the inner diameter dimension of the distal end side ring member before the outer fitting is different from the inner diameter dimension of the proximal end ring member before the outer fitting, the tightening of the distal end side ring member after the outer fitting is performed. The applied force and the tightening force of the proximal end ring member after external fitting are different. Therefore, the distal end portion and the proximal end portion of the balloon can be fastened and fixed with different fastening forces.

請求項4に記載の発明は請求項1〜3のいずれか1の発明において、前記先端側リング部材と前記基端側リング部材は、外嵌前の厚みが異なることを特徴とする。   The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the distal end side ring member and the proximal end side ring member have different thicknesses before external fitting.

請求項4に記載の発明によれば、外嵌前の先端側リング部材の厚みと外嵌前の基端側リング部材の厚みが異なるので、外嵌後の先端側リング部材の締付力と外嵌後の基端側リング部材の締付力が異なる。したがって、バルーンの先端部と基端部とを異なる締付力で締め付け固定することができる。   According to the invention described in claim 4, since the thickness of the distal end side ring member before external fitting and the thickness of the proximal end side ring member before external fitting are different, the tightening force of the distal end side ring member after external fitting and The tightening force of the base end side ring member after external fitting is different. Therefore, the distal end portion and the proximal end portion of the balloon can be fastened and fixed with different fastening forces.

請求項5に記載の発明は請求項1〜4のいずれか1の発明において、前記先端側リング部材と前記基端側リング部材は、材質が異なることを特徴とする。   The invention according to claim 5 is the invention according to any one of claims 1 to 4, characterized in that the distal side ring member and the proximal side ring member are made of different materials.

請求項5に記載の発明によれば、先端側リング部材の材質と基端側リング部材の材質が異なるので、外嵌後の先端側リング部材の締付力と外嵌後の基端側リング部材の締付力が異なる。したがって、バルーンの先端部と基端部とを異なる締付力で締め付け固定することができる。   According to the fifth aspect of the present invention, since the material of the distal end side ring member and the material of the proximal end side ring member are different, the tightening force of the distal end side ring member after external fitting and the proximal end side ring after external fitting The clamping force of the members is different. Therefore, the distal end portion and the proximal end portion of the balloon can be fastened and fixed with different fastening forces.

請求項6に記載の発明は請求項3〜5のいずれか1の発明において、前記先端側リング部材と前記基端側リング部材には、異なる指標が形成されることを特徴とする。   The invention according to claim 6 is the invention according to any one of claims 3 to 5, characterized in that different indicators are formed on the distal end side ring member and the proximal end side ring member.

請求項6に記載の発明によれば、先端側リング部材と基端側リング部材に異なる指標が形成されているので、先端側リング部材と基端側リング部材を容易に見分けることができ、装着の間違いを無くすことができる。   According to the sixth aspect of the present invention, since the different indicators are formed on the distal end side ring member and the proximal end side ring member, the distal end side ring member and the proximal end side ring member can be easily distinguished and attached. The mistakes can be eliminated.

請求項7に記載の発明は請求項1〜6のいずれか1の発明において、前記バルーンの先端部と基端部は厚みが異なることを特徴とする。   A seventh aspect of the present invention is characterized in that, in any one of the first to sixth aspects, the distal end portion and the proximal end portion of the balloon are different in thickness.

請求項7に記載の発明によれば、バルーンの先端部と基端部で厚みが異なるので、先端側リング部材、基端側リング部材をそれぞれ外嵌させた際の締付力が異なる。したがって、バルーンの先端部と基端部とを異なる締付力で締め付け固定することができる。   According to the seventh aspect of the present invention, since the thickness is different between the distal end portion and the proximal end portion of the balloon, the tightening force when the distal end side ring member and the proximal end side ring member are externally fitted is different. Therefore, the distal end portion and the proximal end portion of the balloon can be fastened and fixed with different fastening forces.

本発明によれば、バルーンの先端部の締付力と基端部の締付力が異なるので、それぞれの固定位置における内視鏡の構成(被覆部材の材質、強度、外径寸法など)が異なる場合にも、バルーンを確実に固定することができ、且つ、内視鏡の損傷を防止できる。   According to the present invention, since the clamping force at the distal end of the balloon and the clamping force at the proximal end are different, the configuration of the endoscope (the material of the covering member, the strength, the outer diameter, etc.) at each fixed position Even in different cases, the balloon can be securely fixed and the endoscope can be prevented from being damaged.

以下添付図面に従って本発明に係る内視鏡の好ましい実施の形態について詳述する。   Hereinafter, preferred embodiments of an endoscope according to the present invention will be described in detail with reference to the accompanying drawings.

図1は本発明に係る内視鏡装置の一例を示すシステム構成図である。図1に示すように内視鏡装置は主として、内視鏡10及びバルーン制御装置100で構成される。   FIG. 1 is a system configuration diagram showing an example of an endoscope apparatus according to the present invention. As shown in FIG. 1, the endoscope apparatus mainly includes an endoscope 10 and a balloon control device 100.

内視鏡10は、手元操作部14と、この手元操作部14に連設されて、体腔内に挿入される挿入部12とを備える。手元操作部14には、ユニバーサルケーブル16が接続され、このユニバーサルケーブル16の先端にLGコネクタ18が設けられる。LGコネクタ18は光源装置20に着脱自在に連結され、これによって挿入部12の先端に設けた照明光学系(不図示)に照明光が送られる。また、LGコネクタ18には、ケーブル22を介して電気コネクタ24が接続され、この電気コネクタ24がプロセッサ26に着脱自在に連結される。   The endoscope 10 includes a hand operation unit 14 and an insertion unit 12 connected to the hand operation unit 14 and inserted into a body cavity. A universal cable 16 is connected to the hand operation unit 14, and an LG connector 18 is provided at the tip of the universal cable 16. The LG connector 18 is detachably connected to the light source device 20, whereby illumination light is sent to an illumination optical system (not shown) provided at the distal end of the insertion portion 12. In addition, an electrical connector 24 is connected to the LG connector 18 via a cable 22, and the electrical connector 24 is detachably coupled to the processor 26.

手元操作部14には、送気・送水ボタン28、吸引ボタン30、シャッターボタン32、及び機能切替ボタン34が並設されるとともに、一対のアングルノブ36、36が設けられる。手元操作部14の基端部には、L状に屈曲した管によってバルーン送気口38が形成されている。このバルーン送気口38にエア等の流体を供給、或いは吸引することによって、後述のバルーン60を膨張、或いは収縮させることができる。   The hand operating unit 14 is provided with an air / water supply button 28, a suction button 30, a shutter button 32, and a function switching button 34, and a pair of angle knobs 36 and 36. A balloon air supply port 38 is formed at the proximal end portion of the hand operation unit 14 by a tube bent in an L shape. By supplying or sucking fluid such as air to the balloon air supply port 38, a balloon 60 described later can be inflated or deflated.

挿入部12は、手元操作部14側から順に軟性部40、湾曲部42、及び先端部44で構成される。軟性部40は、螺旋状に巻回された金属板の外周にネットを被せ、さらにその外周に被覆を被せることにより構成され、十分な可撓性を有するように構成される。この軟性部40は、湾曲部42の基端側に連設される。   The insertion portion 12 includes a flexible portion 40, a bending portion 42, and a distal end portion 44 in order from the hand operating portion 14 side. The soft part 40 is configured by covering the outer periphery of a spirally wound metal plate with a net and further covering the outer periphery with a net, and is configured to have sufficient flexibility. The flexible portion 40 is connected to the proximal end side of the bending portion 42.

湾曲部42は、手元操作部14のアングルノブ36、36を回動することによって遠隔的に湾曲するように構成される。たとえば、湾曲部42は、円筒状の複数の節輪をガイドピンで回動自在に連結するとともに、節輪の内部に複数本の操作ワイヤを挿通させてガイドピンにガイドさせ、その操作ワイヤを押し引き操作することによって、節輪同士が回動して湾曲部42が湾曲操作されるようになっている。この湾曲部42を湾曲操作することによって、先端部44を所望の方向に向けることができる。   The bending portion 42 is configured to be bent remotely by rotating the angle knobs 36, 36 of the hand operating portion 14. For example, the bending portion 42 rotatably connects a plurality of cylindrical node rings with a guide pin, and inserts a plurality of operation wires into the node ring to guide the operation wires. By pushing and pulling, the nodes are rotated so that the bending portion 42 is bent. By bending the bending portion 42, the distal end portion 44 can be directed in a desired direction.

先端部44は、その先端面45に観察光学系52、照明光学系54、54、送気・送水ノズル56、鉗子口58が設けられる。観察光学系52の後方にはCCD(不図示)が配設され、このCCDを支持する基板に信号ケーブル(不図示)が接続される。信号ケーブルは挿入部12、手元操作部14、ユニバーサルケーブル16等に挿通されて電気コネクタ24まで延設され、プロセッサ26に接続される。よって、観察光学系52で取り込まれた観察像がCCDの受光面に結像されて電気信号に変換され、この電気信号が信号ケーブルを介して図1のプロセッサ26に出力され、映像信号に変換される。これにより、プロセッサ26に接続されたモニタ50に観察画像が表示される。   The distal end portion 44 is provided with an observation optical system 52, illumination optical systems 54 and 54, an air / water supply nozzle 56, and a forceps port 58 on the distal end surface 45. A CCD (not shown) is disposed behind the observation optical system 52, and a signal cable (not shown) is connected to a substrate that supports the CCD. The signal cable is inserted into the insertion portion 12, the hand operating portion 14, the universal cable 16, etc., is extended to the electrical connector 24, and is connected to the processor 26. Therefore, the observation image captured by the observation optical system 52 is formed on the light receiving surface of the CCD and converted into an electric signal, and this electric signal is output to the processor 26 in FIG. 1 via the signal cable and converted into a video signal. Is done. Thereby, an observation image is displayed on the monitor 50 connected to the processor 26.

図2の照明光学系54、54は、その後方にライトガイド(不図示)の出射端が配設され、ライトガイドは図1の挿入部12、手元操作部14、ユニバーサルケーブル16に挿通されてLGコネクタ18内に入射端が配設される。したがって、LGコネクタ18を光源装置20に連結することによって、光源装置20から照射された照明光がライトガイドを介して図2の照明光学系54、54に伝送され、照明光学系54、54から前方に照射される。   The illumination optical systems 54 and 54 in FIG. 2 are provided with an exit end of a light guide (not shown) behind them, and the light guide is inserted through the insertion section 12, the hand operation section 14, and the universal cable 16 in FIG. An incident end is disposed in the LG connector 18. Therefore, by connecting the LG connector 18 to the light source device 20, the illumination light emitted from the light source device 20 is transmitted to the illumination optical systems 54 and 54 in FIG. Irradiated forward.

送気・送水ノズル56は、図1の送気・送水ボタン28によって操作されるバルブ(不図示)に連通され、このバルブがLGコネクタ18に設けた送気・送水コネクタ48に連通される。送気・送水コネクタ48には不図示の送気・送水手段が接続され、エア及び水が供給される。したがって、送気・送水ボタン28を操作することによって、送気・送水ノズル56からエア又は水を観察光学系に向けて噴射することができる。   The air / water supply nozzle 56 is connected to a valve (not shown) operated by the air / water supply button 28 in FIG. 1, and this valve is connected to an air / water supply connector 48 provided in the LG connector 18. An air / water supply means (not shown) is connected to the air / water connector 48 to supply air and water. Accordingly, by operating the air / water supply button 28, air or water can be ejected from the air / water supply nozzle 56 toward the observation optical system.

図2の鉗子口58は、図1の鉗子挿入部46に連通される。よって、鉗子挿入部46から鉗子等の処置具を挿入することによって、処置具を鉗子口58から導出することができる。また、鉗子口58は、吸引ボタン30によって操作されるバルブに連通され、このバルブがLGコネクタ18の吸引コネクタ49に接続される。したがって、吸引コネクタ49に不図示の吸引手段を接続し、吸引ボタン30でバルブを操作することによって、鉗子口58から病変部等を吸引することができる。   2 is communicated with the forceps insertion portion 46 of FIG. Therefore, the treatment tool can be led out from the forceps port 58 by inserting a treatment tool such as a forceps from the forceps insertion portion 46. The forceps port 58 communicates with a valve operated by the suction button 30, and this valve is connected to the suction connector 49 of the LG connector 18. Therefore, by connecting a suction means (not shown) to the suction connector 49 and operating the valve with the suction button 30, a lesioned part or the like can be sucked from the forceps opening 58.

図2に示すように、挿入部12の外周面には、ゴム等の弾性体から成るバルーン60が装着される。バルーン60は、図3に示す如く、その先端部60A及び基端部60Bが絞られた略筒状に形成されており、小径の先端部60A及び基端部60Bと、中央の膨出部60Cで構成される。このバルーン60は、挿入部12を挿通させて挿入部12の所定の位置に配置した後、先端部60A、基端部60Bにそれぞれ先端側リング61、基端側リング62を嵌め込むことによって、挿入部12に固定される。その際、図2に示すように、バルーン60の先端部60Aは挿入部12の先端部44の上に配置され、バルーン60の基端部60Bは湾曲部42の上に配置されて固定される。   As shown in FIG. 2, a balloon 60 made of an elastic material such as rubber is attached to the outer peripheral surface of the insertion portion 12. As shown in FIG. 3, the balloon 60 is formed in a substantially cylindrical shape in which the distal end portion 60A and the proximal end portion 60B are narrowed, and has a small diameter distal end portion 60A and a proximal end portion 60B, and a central bulging portion 60C. Consists of. The balloon 60 is inserted through the insertion portion 12 and disposed at a predetermined position of the insertion portion 12, and then the distal end side ring 61 and the proximal end side ring 62 are fitted into the distal end portion 60A and the proximal end portion 60B, respectively. It is fixed to the insertion part 12. At that time, as shown in FIG. 2, the distal end portion 60A of the balloon 60 is disposed on the distal end portion 44 of the insertion portion 12, and the proximal end portion 60B of the balloon 60 is disposed on the curved portion 42 and fixed. .

先端側リング61及び基端側リング62は、ゴム等の弾性体によって構成されており、図3に示すようにリング状に形成されている。外嵌前の先端側リング61の内径D1と、外嵌前の基端側リング62の内径D2は、挿入部12の外径D3よりも若干小さく形成されている。したがって、先端側リング61及び基端側リング62を挿入部12に外嵌させる際は、先端側リング61及び基端側リング62を弾性変形によって拡径させる。よって、図2に示すように、先端側リング61、基端側リング62をバルーン60の先端部60A、基端部60Bの上に外嵌させると、先端側リング61、基端側リング62の弾性力によって、先端部60A、基端部60Bが全周にわたって締め付けられて挿入部12に固定される。   The distal end side ring 61 and the proximal end side ring 62 are made of an elastic body such as rubber, and are formed in a ring shape as shown in FIG. An inner diameter D1 of the distal end side ring 61 before external fitting and an inner diameter D2 of the proximal end side ring 62 before external fitting are formed to be slightly smaller than the outer diameter D3 of the insertion portion 12. Therefore, when the distal end side ring 61 and the proximal end side ring 62 are externally fitted to the insertion portion 12, the distal end side ring 61 and the proximal end side ring 62 are expanded in diameter by elastic deformation. Therefore, as shown in FIG. 2, when the distal end side ring 61 and the proximal end side ring 62 are fitted on the distal end portion 60A and the proximal end portion 60B of the balloon 60, the distal end side ring 61 and the proximal end side ring 62 are The distal end portion 60A and the proximal end portion 60B are tightened over the entire circumference by the elastic force and fixed to the insertion portion 12.

図4に示すように、基端側リング62の内径D2は、先端側リング61の内径D1よりも大きく形成されている。したがって、図2のように先端側リング61と基端側リング62を挿入部12に外嵌させた際、基端側リング62がバルーン60の基端部60Bを締め付ける締付力は、先端側リング61がバルーン60の先端部60Aを締め付ける締付力よりも小さくなる。これにより、湾曲部42に配置された基端側リング62の締付力が小さくなるので、湾曲部42の被覆部材(アングルゴム)の損傷を防止することができる。なお、基端側リング62の締付力は、バルーン60の基端部60Bと挿入部12との間の気密を保持できるように設定される。同様に先端側リング61の締付力は、バルーン60の先端部60Aと挿入部12との間の気密を保持できるように設定される。   As shown in FIG. 4, the inner diameter D <b> 2 of the proximal end side ring 62 is formed larger than the inner diameter D <b> 1 of the distal end side ring 61. Therefore, when the distal end side ring 61 and the proximal end side ring 62 are externally fitted to the insertion portion 12 as shown in FIG. 2, the tightening force with which the proximal end side ring 62 tightens the proximal end portion 60B of the balloon 60 is The ring 61 is smaller than the tightening force for tightening the distal end portion 60 </ b> A of the balloon 60. Thereby, since the fastening force of the base end side ring 62 arrange | positioned at the curved part 42 becomes small, damage to the coating | coated member (angle rubber | gum) of the curved part 42 can be prevented. Note that the tightening force of the proximal end side ring 62 is set so that the airtightness between the proximal end portion 60B of the balloon 60 and the insertion portion 12 can be maintained. Similarly, the tightening force of the distal end side ring 61 is set so that the airtightness between the distal end portion 60A of the balloon 60 and the insertion portion 12 can be maintained.

図2に示すように、挿入部12の先端部44の基端位置には、供給・吸引口64が形成される。供給・吸引口64は、不図示のチューブに接続されており、このチューブは挿入部12の内部に挿通され、手元操作部14のバルーン送気口38に連通される。バルーン送気口38には後述のチューブ110を介してバルーン制御装置100が接続される。したがって、バルーン制御装置100によってエアを供給、吸引することによって、バルーン60を膨張、収縮させることができる。バルーン60はエアを供給することによって略球状に膨張し、エアを吸引することによって挿入部12の外表面に張り付くようになっている。   As shown in FIG. 2, a supply / suction port 64 is formed at the proximal end position of the distal end portion 44 of the insertion portion 12. The supply / suction port 64 is connected to a tube (not shown), and this tube is inserted into the insertion portion 12 and communicated with the balloon air supply port 38 of the hand operation portion 14. The balloon control device 100 is connected to the balloon air supply port 38 via a tube 110 described later. Therefore, the balloon 60 can be inflated and deflated by supplying and sucking air with the balloon control device 100. The balloon 60 expands into a substantially spherical shape by supplying air, and sticks to the outer surface of the insertion portion 12 by sucking air.

図1のバルーン制御装置100は、バルーン60にエア等の流体を供給・吸引する装置である。バルーン制御装置100は主として、装置本体102と、リモートコントロール用のハンドスイッチ104で構成される。   The balloon control device 100 in FIG. 1 is a device that supplies and sucks fluid such as air to the balloon 60. The balloon control device 100 mainly includes a device main body 102 and a hand switch 104 for remote control.

装置本体102の前面には、電源スイッチSW1、停止スイッチSW2、圧力表示部106が設けられる。圧力表示部106はバルーン60の圧力値を表示するパネルであり、バルーン破れ等の異常発生時にはこの圧力表示部106にエラーコードが表示される。   On the front surface of the apparatus main body 102, a power switch SW1, a stop switch SW2, and a pressure display unit 106 are provided. The pressure display unit 106 is a panel that displays the pressure value of the balloon 60, and an error code is displayed on the pressure display unit 106 when an abnormality such as balloon breakage occurs.

装置本体102の前面には、バルーン60へのエア供給・吸引を行うチューブ110が接続される。チューブ110と装置本体102との接続部分にはバルーン60が破れた時の体液の逆流を防止するための逆流防止ユニット112が設けられる。逆流防止ユニット112は、装置本体102に着脱自在に装着された中空円盤状のケース(不図示)の内部に気液分離用のフィルタを組み込むことによって構成されており、装置本体102内に液体が流入することをフィルタによって防止する。   A tube 110 that supplies and sucks air to and from the balloon 60 is connected to the front surface of the apparatus main body 102. A connection portion between the tube 110 and the apparatus main body 102 is provided with a backflow prevention unit 112 for preventing backflow of body fluid when the balloon 60 is broken. The backflow prevention unit 112 is configured by incorporating a gas-liquid separation filter in a hollow disk-like case (not shown) that is detachably attached to the apparatus main body 102, and liquid is contained in the apparatus main body 102. Inflow is prevented by a filter.

一方、ハンドスイッチ104には、各種のスイッチが設けられる。たとえば、装置本体102側の停止スイッチSW2と同様の停止スイッチや、バルーン60の加圧/減圧を指示するON/OFFスイッチ、バルーン60の圧力を保持するためのポーズスイッチなどが設けられる。このハンドスイッチ104はコード130を介して装置本体102に電気的に接続されている。なお、図1には示してないが、ハンドスイッチ104には、バルーン60の送気状態、或いは排気状態を示す表示部が設けられている。   On the other hand, the hand switch 104 is provided with various switches. For example, a stop switch similar to the stop switch SW2 on the apparatus main body 102 side, an ON / OFF switch for instructing pressurization / depressurization of the balloon 60, a pause switch for holding the pressure of the balloon 60, and the like are provided. The hand switch 104 is electrically connected to the apparatus main body 102 via a cord 130. Although not shown in FIG. 1, the hand switch 104 is provided with a display unit that indicates an air supply state or an exhaust state of the balloon 60.

上記の如く構成されたバルーン制御装置100は、バルーン60にエアを供給して膨張させるとともに、そのエア圧を一定値に制御してバルーン60を膨張した状態に保持する。また、バルーン60からエアを吸引して収縮させるとともに、そのエア圧を一定値に制御してバルーン60を収縮した状態に保持する。   The balloon control device 100 configured as described above supplies air to the balloon 60 to inflate it, and controls the air pressure to a constant value to hold the balloon 60 in an inflated state. In addition, air is sucked from the balloon 60 and contracted, and the air pressure is controlled to a constant value to hold the balloon 60 in a contracted state.

バルーン制御装置100は、バルーン専用モニタ82に接続されており、バルーン60を膨張、収縮させる際に、バルーン60の圧力値や膨張・収縮状態をバルーン専用モニタ82に表示する。なお、バルーン60の圧力値や膨張・収縮状態は、内視鏡10の観察画像にスーパーインポーズしてモニタ50に表示するようにしてもよい。   The balloon control device 100 is connected to the balloon dedicated monitor 82 and displays the pressure value and the inflated / deflated state of the balloon 60 on the balloon dedicated monitor 82 when the balloon 60 is inflated and deflated. The pressure value and the inflated / deflated state of the balloon 60 may be superimposed on the observation image of the endoscope 10 and displayed on the monitor 50.

上記の如く構成された内視鏡装置の操作方法の一例としては、挿入部12をプッシュ式で挿入していき、必要に応じてバルーン60を膨張させて挿入部12を体内(たとえば大腸内)に固定する。そして、挿入部12を引いて体内(たとえば大腸内)の管形状を単純化した後、バルーン60を収縮させて挿入部12をさらに腸管の深部に挿入する。たとえば、挿入部12を被検者の肛門から挿入し、挿入部12の先端がS状結腸を過ぎた際にバルーン60を膨張させて挿入部12を腸管に固定し、挿入部12を引いてS状結腸を略直線状にする。そして、バルーン60を収縮させて、挿入部12の先端を腸管の深部に挿入していく。これにより、挿入部12を腸管の深部に挿入することができる。   As an example of the operation method of the endoscope apparatus configured as described above, the insertion portion 12 is pushed and the balloon 60 is inflated as necessary to insert the insertion portion 12 in the body (for example, in the large intestine). Secure to. Then, after pulling the insertion portion 12 to simplify the tube shape in the body (for example, the large intestine), the balloon 60 is deflated and the insertion portion 12 is further inserted into the deep portion of the intestinal tract. For example, the insertion portion 12 is inserted from the subject's anus, and when the distal end of the insertion portion 12 passes the sigmoid colon, the balloon 60 is inflated to fix the insertion portion 12 to the intestinal tract, and the insertion portion 12 is pulled. The sigmoid colon is made substantially straight. Then, the balloon 60 is deflated and the distal end of the insertion portion 12 is inserted into the deep portion of the intestinal tract. Thereby, the insertion part 12 can be inserted in the deep part of an intestinal tract.

次に上記の如く構成された内視鏡装置の作用について説明する。   Next, the operation of the endoscope apparatus configured as described above will be described.

バルーン60の基端部60Bは、湾曲部42のアングルゴム上で固定されている。アングルゴムは、湾曲部42の湾曲操作性を確保するために、高い可撓性を有するゴム材で構成される。このため、湾曲部42上でバルーン60の基端部60Bを固定する力(すなわち、基端側リング62による締付力)が大きすぎると、アングルゴムが圧迫されて損傷するおそれや、湾曲操作時にアングルゴムが湾曲部42内の節輪同士に挟まれて損傷するおそれがある。   The base end portion 60 </ b> B of the balloon 60 is fixed on the angle rubber of the curved portion 42. The angle rubber is composed of a rubber material having high flexibility in order to ensure the bending operability of the bending portion 42. For this reason, if the force for fixing the base end portion 60B of the balloon 60 on the bending portion 42 (that is, the tightening force by the base end side ring 62) is too large, the angle rubber may be compressed and damaged, There is a possibility that the angle rubber is sometimes pinched between the node rings in the curved portion 42 and damaged.

一方で、バルーン60の先端部60Aは、挿入部12の先端部44上で固定されている。この先端部44は硬質であるので、バルーン60の先端部60Aの固定位置がずれないように、バルーン60の先端部60Aを固定する力(すなわち、先端側リング61による締付力)を大きくして、バルーン60の先端部60Aを強固に固定したいという要望がある。   On the other hand, the distal end portion 60 </ b> A of the balloon 60 is fixed on the distal end portion 44 of the insertion portion 12. Since the distal end portion 44 is hard, a force for fixing the distal end portion 60A of the balloon 60 (that is, a tightening force by the distal end side ring 61) is increased so that the fixing position of the distal end portion 60A of the balloon 60 is not shifted. Thus, there is a desire to firmly fix the distal end portion 60A of the balloon 60.

このような背景から、本実施の形態では、外嵌前の基端側リング62の内径D2を、外嵌前の先端側リング61の内径D1よりも大きく形成している。このように形成された先端側リング61及び基端側リング62は、バルーン60の先端部60A及び基端部60Bに外嵌させて締め付け固定した際に、バルーン60の先端部60Aを先端側リング61の大きな締付力で強固に固定できる一方で、バルーン60の基端部60Bを基端側リング62の必要最小限の締付力で固定することができ、湾曲部42のアングルゴムが損傷することを防止することができる。したがって、本実施の形態によれば、バルーン60の先端部60A及び基端部60Bを、構成の異なる先端部44及び湾曲部42に確実に、且つ、湾曲部42を損傷することなく固定することができる。   From this background, in the present embodiment, the inner diameter D2 of the base end side ring 62 before external fitting is formed larger than the inner diameter D1 of the distal end side ring 61 before external fitting. When the distal end side ring 61 and the proximal end side ring 62 formed in this way are fitted onto the distal end portion 60A and the proximal end portion 60B of the balloon 60 and fastened and fixed, the distal end portion 60A of the balloon 60 is fixed to the distal end side ring. The base end 60B of the balloon 60 can be fixed with the minimum necessary tightening force of the base end side ring 62, and the angle rubber of the curved portion 42 is damaged. Can be prevented. Therefore, according to the present embodiment, the distal end portion 60A and the proximal end portion 60B of the balloon 60 are securely fixed to the distal end portion 44 and the bending portion 42 having different configurations and without damaging the bending portion 42. Can do.

なお、上述した実施形態は、基端側リング62の内径D2を先端側リング61の内径D1よりも大きく形成することによって、基端側リング62の締付力が先端側リング61の締付力よりも小さくなるように構成したが、基端側リング62と先端側リング61の構成はこれに限定するものではない。たとえば、図5に示すように、外嵌前の先端側リング61と基端側リング62を同じ内径で形成するとともに、外嵌前の基端側リング62の厚みT2が、外嵌前の先端側リング61の厚みT1よりも薄くなるように構成するとよい。これにより、外嵌後の基端側リング62の締付力を、外嵌後の先端側リング61の締付力よりも小さくすることができる。   In the embodiment described above, the inner ring D2 of the proximal ring 62 is formed larger than the inner diameter D1 of the distal ring 61, so that the clamping force of the proximal ring 62 becomes the clamping force of the distal ring 61. However, the configuration of the proximal end side ring 62 and the distal end side ring 61 is not limited to this. For example, as shown in FIG. 5, the distal end side ring 61 and the proximal end side ring 62 before external fitting are formed with the same inner diameter, and the thickness T2 of the proximal end side ring 62 before external fitting is the distal end before external fitting. It may be configured to be thinner than the thickness T1 of the side ring 61. Thereby, the fastening force of the proximal end side ring 62 after external fitting can be made smaller than the fastening force of the distal end side ring 61 after external fitting.

図6は、基端側リング62の内径D2が先端側リング61の内径D1よりも大きく形成され、且つ、基端側リング62の厚みT2が先端側リング61の厚みT1よりも薄く形成された例である。このように構成された先端側リング61及び基端側リング62は、基端側リング62の締付力が先端側リング61の締付力よりも確実に小さくなる。   In FIG. 6, the inner diameter D2 of the proximal end side ring 62 is formed larger than the inner diameter D1 of the distal end side ring 61, and the thickness T2 of the proximal end side ring 62 is formed thinner than the thickness T1 of the distal end side ring 61. It is an example. In the distal end side ring 61 and the proximal end side ring 62 configured in this way, the tightening force of the proximal end side ring 62 is surely smaller than the tightening force of the distal end side ring 61.

上述した実施形態は、先端側リング61と基端側リング62の形状(内径、厚み等)を変えることによって締付力を変化させるようにしたが、これに限定するものではなく、先端側リング61と基端側リング62の材質を変えることによって締付力を変化させるようにしてもよい。たとえば、先端側リング61と基端側リング62で同じ形状で形成するとともに、基端側リング62のゴム材の硬度を先端側リング61のゴム材の硬度よりも小さくするとよい。これにより、基端側リング62が先端側リング61よりも伸び易くなるので、基端側リング62の締付力が先端側リング61の締付力よりも小さくなる。なお、先端側リング61と基端側リング62で材質を変えるとともに、上記の如く、先端側リング61と基端側リング62で形状を変えるようにしてもよい。   In the above-described embodiment, the tightening force is changed by changing the shapes (inner diameter, thickness, etc.) of the distal end side ring 61 and the proximal end side ring 62, but the present invention is not limited to this. The tightening force may be changed by changing the material of 61 and the base end side ring 62. For example, the distal end side ring 61 and the proximal end side ring 62 may be formed in the same shape, and the hardness of the rubber material of the proximal end side ring 62 may be smaller than the hardness of the rubber material of the distal end side ring 61. As a result, the proximal end ring 62 becomes easier to extend than the distal end side ring 61, so that the tightening force of the proximal end side ring 62 is smaller than the tightening force of the distal end side ring 61. In addition, while changing a material by the front end side ring 61 and the base end side ring 62, you may make it change a shape by the front end side ring 61 and the base end side ring 62 as mentioned above.

また、上記の如く、先端側リング61と基端側リング62で形状、材質等を変えた場合には、先端側リング61の表面、及び/又は、基端側リング62の表面に指標を設け、先端側リング61と基端側リング62で見分けられるようにするとよい。その場合、指標の種類は特に限定するものではなく、色や模様によって区別するようにしてもよい。   Further, as described above, when the shape, material, and the like of the distal end side ring 61 and the proximal end side ring 62 are changed, an index is provided on the surface of the distal end side ring 61 and / or the surface of the proximal end side ring 62. The distal side ring 61 and the proximal side ring 62 may be distinguished from each other. In that case, the type of the index is not particularly limited, and may be distinguished by a color or a pattern.

先端側リング61と基端側リング62の軸方向の長さは特に限定するものではないが、締付力の小さい基端側リング62の軸方向の長さが、先端側リング61の軸方向の長さよりも長くなるように形成することが好ましい。これにより、締付力の小さい基端側リング62においてバルーン60の基端部60Bと湾曲部42との密着性を向上させることができ、気密を確実にとることができる。   The lengths in the axial direction of the distal end side ring 61 and the proximal end side ring 62 are not particularly limited, but the axial length of the proximal end side ring 62 having a small tightening force is equal to the axial direction of the distal end side ring 61. It is preferable to form so that it may become longer than this length. Thereby, in the proximal end side ring 62 with a small tightening force, the adhesion between the proximal end portion 60B of the balloon 60 and the curved portion 42 can be improved, and airtightness can be ensured.

また、上述した実施形態は、先端側リング61及び基端側リング62の構成によって締付力を変えるようにしたが、バルーン60の先端部60Aと基端部60Bの構成によって締付力を変化させるようにしてもよい。たとえば、図7に示すように、バルーン60の先端部60Aの厚みT3が基端部60Bの厚みT4よりも厚くなるように構成するとよい。この場合、図8に示すように、バルーン60の先端部60A、基端部60Bに先端側リング61、基端側リング62を外嵌させた際に、先端側リング61や基端側リング62の構成(形状や材質等)によらず、基端部60Bでの締付力が先端部60Aでの締付力よりも小さくなる。   In the above-described embodiment, the tightening force is changed by the configuration of the distal end side ring 61 and the proximal end side ring 62. However, the tightening force is changed by the configurations of the distal end portion 60A and the proximal end portion 60B of the balloon 60. You may make it make it. For example, as shown in FIG. 7, the thickness T3 of the distal end portion 60A of the balloon 60 may be configured to be thicker than the thickness T4 of the proximal end portion 60B. In this case, as shown in FIG. 8, when the distal end side ring 61 and the proximal end side ring 62 are externally fitted to the distal end portion 60A and the proximal end portion 60B of the balloon 60, the distal end side ring 61 and the proximal end side ring 62 are provided. Regardless of the configuration (shape, material, etc.), the clamping force at the base end 60B is smaller than the clamping force at the distal end 60A.

なお、上述した実施形態は、バルーン60が挿入部12の先端部44から湾曲部42にわたって装着される例であるが、バルーン60の装着位置はこれに限定するものではなく、たとえば、バルーン60の先端部60Aを湾曲部42に固定し、バルーン60の基端部60Bを軟性部40に固定するようにしてもよい。この場合には、先端側リング61によるバルーン60の先端部60Aの締付力が、基端側リング62によるバルーン60の基端部60Bの締付力よりも小さくなるように構成するとよい。   The embodiment described above is an example in which the balloon 60 is mounted from the distal end portion 44 of the insertion portion 12 to the curved portion 42. However, the mounting position of the balloon 60 is not limited to this. The distal end portion 60 </ b> A may be fixed to the curved portion 42, and the proximal end portion 60 </ b> B of the balloon 60 may be fixed to the flexible portion 40. In this case, the clamping force of the distal end portion 60A of the balloon 60 by the distal end side ring 61 may be configured to be smaller than the clamping force of the proximal end portion 60B of the balloon 60 by the proximal end side ring 62.

本発明に係る内視鏡装置の一例を示すシステム構成図System configuration diagram showing an example of an endoscope apparatus according to the present invention 内視鏡の挿入部を示す斜視図The perspective view which shows the insertion part of an endoscope バルーン、先端側リング及び基端側リングを示す斜視図The perspective view which shows a balloon, a front end side ring, and a base end side ring 先端側リング及び基端側リングを示す正面図Front view showing the distal end side ring and the proximal end side ring 先端側リング及び基端側リングの別実施形態を示す正面図Front view showing another embodiment of the distal end side ring and the proximal end side ring 先端側リング及び基端側リングの別実施形態を示す正面図Front view showing another embodiment of the distal end side ring and the proximal end side ring バルーンの別実施形態を示す断面図Sectional drawing which shows another embodiment of a balloon 図7のバルーンを挿入部に装着した状態の断面図Sectional drawing of the state where the balloon of FIG.

符号の説明Explanation of symbols

10…内視鏡、12…挿入部、14…手元操作部、42…湾曲部、44…先端部、60…バルーン、60A…先端部、60B…基端部、61…先端側リング、62…基端側リング   DESCRIPTION OF SYMBOLS 10 ... Endoscope, 12 ... Insertion part, 14 ... Hand operation part, 42 ... Curve part, 44 ... Tip part, 60 ... Balloon, 60A ... Tip part, 60B ... Base end part, 61 ... Tip side ring, 62 ... Proximal ring

Claims (7)

挿入部を有する内視鏡と、略筒状に形成されて前記挿入部が挿通されるバルーンと、前記バルーンの先端部及び基端部にそれぞれ外嵌される先端側リング部材及び基端側リング部材とを備え、前記先端側リング部材及び基端側リング部材によって前記バルーンの先端部及び基端部が締め付けられて前記挿入部に固定される内視鏡装置において、
前記先端側リング部材が前記先端部を締め付ける締付力と、前記基端側リング部材が前記基端部を締め付ける締付力とが異なることを特徴とする内視鏡装置。
An endoscope having an insertion portion, a balloon formed in a substantially cylindrical shape through which the insertion portion is inserted, and a distal end side ring member and a proximal end side ring that are respectively fitted on the distal end portion and the proximal end portion of the balloon An endoscope device in which a distal end portion and a proximal end portion of the balloon are tightened and fixed to the insertion portion by the distal end side ring member and the proximal end side ring member,
An endoscope apparatus, wherein a tightening force at which the distal end side ring member tightens the distal end portion is different from a tightening force at which the proximal end side ring member tightens the proximal end portion.
前記内視鏡の挿入部には湾曲操作される湾曲部が設けられ、該湾曲部に前記バルーンの先端部又は基端部の一方が配置されるとともに、
該湾曲部に配置された先端部又は基端部の一方が、該先端部又は基端部の他方よりも前記締付力が小さいことを特徴とする請求項1に記載の内視鏡装置。
The insertion portion of the endoscope is provided with a bending portion that is operated to bend, and one of the distal end portion and the proximal end portion of the balloon is disposed in the bending portion,
The endoscope apparatus according to claim 1, wherein one of a distal end portion and a proximal end portion arranged in the curved portion has a smaller tightening force than the other of the distal end portion and the proximal end portion.
前記先端側リング部材と前記基端側リング部材は、外嵌前の内径寸法が異なることを特徴とする請求項1又は2に記載の内視鏡装置。   The endoscope apparatus according to claim 1, wherein the distal end side ring member and the proximal end side ring member have different inner diameter dimensions before external fitting. 前記先端側リング部材と前記基端側リング部材は、外嵌前の厚みが異なることを特徴とする請求項1〜3のいずれか1に記載の内視鏡装置。   The endoscope apparatus according to claim 1, wherein the distal end side ring member and the proximal end side ring member have different thicknesses before external fitting. 前記先端側リング部材と前記基端側リング部材は、材質が異なることを特徴とする請求項1〜4のいずれか1に記載の内視鏡装置。   The endoscope apparatus according to any one of claims 1 to 4, wherein the distal end side ring member and the proximal end side ring member are made of different materials. 前記先端側リング部材と前記基端側リング部材には、異なる指標が形成されることを特徴とする請求項3〜5のいずれか1に記載の内視鏡装置。   The endoscope apparatus according to claim 3, wherein different indices are formed on the distal end side ring member and the proximal end side ring member. 前記バルーンの先端部と基端部は厚みが異なることを特徴とする請求項1〜6のいずれか1に記載の内視鏡装置。   The endoscope apparatus according to claim 1, wherein the distal end portion and the proximal end portion of the balloon have different thicknesses.
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