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JP3918097B2 - Balloon endoscope - Google Patents
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JP3918097B2 - Balloon endoscope - Google Patents

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Publication number
JP3918097B2
JP3918097B2 JP2003131184A JP2003131184A JP3918097B2 JP 3918097 B2 JP3918097 B2 JP 3918097B2 JP 2003131184 A JP2003131184 A JP 2003131184A JP 2003131184 A JP2003131184 A JP 2003131184A JP 3918097 B2 JP3918097 B2 JP 3918097B2
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JP
Japan
Prior art keywords
balloon
distal end
endoscope
suction port
air supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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JP2003131184A
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Japanese (ja)
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JP2004329645A (en
Inventor
光則 町田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujinon Corp
SRJ Corp
Original Assignee
Fujinon Corp
SRJ Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2003131184A priority Critical patent/JP3918097B2/en
Publication of JP2004329645A publication Critical patent/JP2004329645A/en
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Description

【0001】
【発明の属する技術分野】
本発明はバルーン式内視鏡に係り、特に内視鏡挿入部先端に膨縮自在なバルーンが設けられた内視鏡に関する。
【0002】
【従来の技術】
消化管検査に使用される内視鏡装置には、内視鏡挿入部先端の外周部に、膨縮自在な薄膜のバルーンが取り付けられたものがある。このようなバルーン式内視鏡は、内視鏡挿入部を腸管の深部に挿入していき、バルーンに空気を供給しバルーンを膨張させて腸壁に一時的に固定するために使用される。
【0003】
内視鏡挿入部には流体流路が配設され、この流体流路の出口は、挿入部先端の外周面に形成された流体供給吸引口に連通されている。したがって、流体流路を介して流体供給吸引口から空気を供給することによりバルーンが膨張し、流体供給吸引口から流体を吸引することによりバルーンが収縮する。
【0004】
ところで、従来のバルーン式内視鏡には、内視鏡挿入部先端の外周面に、前記流体供給吸引口に連通された溝が形成されているものがある(例えば、特許文献1)。この内視鏡によれば、バルーンに供給した流体を流体通路を介して吸引したときに、バルーンが流体供給吸引口及びその近傍に密着しても、流体は前記溝を介して流体通路に流れ込むので、バルーン内の流体を完全に排出することができ、バルーンを完全に収縮させることができる。
【0005】
【特許文献1】
実開昭62−186701号公報
【0006】
【発明が解決しようとする課題】
前記特許文献1のバルーン式内視鏡は、前記溝が内視鏡先端硬質部の外周面に直接形成されているものである。このため、先端硬質部の強度を確保するために、先端硬質部の肉厚を厚くする必要があるが、先端硬質部内には対物光学系、ライトガイド等の内容物が密に配置されているので、内周側に肉盛りをすることはできない。よって、特許文献1の内視鏡は、先端硬質部の外径を大きくして肉厚を確保する必要があるので、先端硬質部が大径になるという欠点があった。
【0007】
本発明は、このような事情に鑑みてなされたもので、内視鏡挿入部先端に流体供給吸引口と溝部とが形成された内視鏡において、挿入部先端の大径化を阻止することができるバルーン式内視鏡を提供することを目的とする。
【0008】
【課題を解決するための手段】
本発明は、前記目的を達成するために、内視鏡挿入部先端の外周面を覆うように設けられたバルーンに、前記外周面に開口された流体供給吸引口から流体を供給及び吸引することにより、前記バルーンを膨縮させるバルーン式内視鏡において、前記内視鏡挿入部先端の湾曲部を構成する外皮チューブと先端硬質部とを連結するための接着剤が塗布された膨らみ部に、前記流体供給吸引口と、前記挿入部の長手方向又は長手方向と直交する方向に形成されて前記流体供給吸引口に連通する溝部とが形成され、前記バルーンは、前記湾曲部の一部及び前記先端硬質部の一部を覆う位置に設けられていることを特徴としている。
【0009】
本発明によれば、内視鏡挿入部先端の湾曲部を構成する外皮チューブと先端硬質部とを連結するための接着剤が塗布された膨らみ部に、すなわち、元々形成されている膨らみ部に、流体供給吸引口と溝部とを形成したので、流体供給吸引口と溝部とを形成することによる挿入部先端の大径化を阻止することができる。
【0010】
【発明の実施の形態】
以下添付図面に従って本発明に係るバルーン式内視鏡の好ましい実施の形態について詳述する。
【0011】
図1は、本発明に係るバルーン式内視鏡とバルーン制御装置とからなる内視鏡装置のシステム構成図である。
【0012】
同図に示す内視鏡装置は、バルーン式内視鏡10とオーバーチューブ50とからなるダブルバルーン式内視鏡と、バルーン制御装置100とから構成されている。
【0013】
バルーン式内視鏡10は、挿入部12の先端に対物光学系76(図3参照)及び撮像素子(CCD)等が設けられた電子内視鏡であり、観察像は対物光学系76を介してCCDに結像され、ここで光電変換される。光電変換された観察像を示す電気信号は、挿入部12及び手元操作部14内の配線を経由して図示しないプロセッサに出力され、ここで適宜信号処理されたのちモニタTVに出力される。これにより、モニタTVに観察像が表示される。
【0014】
また、バルーン式内視鏡10の挿入部12の先端側面には、後述する空気供給吸引口(流体供給吸引口)16が形成され、一方、手元操作部14側にはバルーン送気口18が設けられており、空気供給吸引口16とバルーン送気口18とは、挿入部12に沿って設けられた内径0.8mm程度のエア供給チューブ19(図4参照:流体通路)によって連結されている。
【0015】
このバルーン式内視鏡10をダブルバルーン式内視鏡として使用する場合には、挿入部先端70にバルーン20を被せ、バルーン20の両端を固定用ゴムで固定する。これにより、バルーン送気口18から空気供給吸引口16を介してバルーン20内にエアを供給し、バルーン20を膨らませたり、バルーン20内のエアを吸引し、バルーン20を収縮させたりすることができる。
【0016】
図2に示すオーバーチューブ50は、バルーン式内視鏡10と協働して小腸の深部にバルーン式内視鏡10の挿入部12を挿入するためのものであり、バルーン式内視鏡10の挿入部12の外径よりも僅かに大きな内径を有し、またバルーン式内視鏡10の挿入部12と同様に可撓性を有している。
【0017】
オーバーチューブ50の先端側面には空気供給吸引口52が形成され、この空気供給吸引口52を囲むようにチューブ先端の周囲にバルーン54が取り付けられている。また、オーバーチューブ50の後部にはバルーン送気口56が設けられ、このバルーン送気口56と空気供給吸引口52とは、オーバーチューブ50の外周に沿って一体的に形成された内径1mm程度のエア供給チューブ58によって連結されている。かかる構成により、バルーン送気口56からエア供給チューブ58、空気供給吸引口52を介してバルーン54内にエアを供給し、バルーン54を膨らませたり、バルーン54内のエアを吸引し、バルーン54を収縮させたりすることができる。なお、符号60は、オーバーチューブ50内に潤滑剤(水)を注入するための注水口である。
【0018】
図1に示したバルーン制御装置100は、バルーン式内視鏡10の挿入部先端70のバルーン20と、オーバーチューブ50の先端のバルーン54とを交互に膨らませるために各バルーン20、54に別々に送気・排気を行うもので、ポンプ、シーケンサ等が設けられた装置本体102と、リモートコントロール用のハンドスイッチ104とから構成されている。
【0019】
バルーン制御装置100の装置本体102の前面パネルには、電源スイッチSW1、停止スイッチSW2、バルーン20用の圧力計106、バルーン54用の圧力計108等が設けられている。
【0020】
また、装置本体102の前面パネルには、各バルーン20、54への送気・排気用のチューブ110、120が取り付けられている。各チューブ110、120の途中には、それぞれバルーン20、54が破れたときに体液の逆流を防ぐための内視鏡用の液溜めタンク130と、オーバーチューブ用の液溜めタンク140とが設けられ、各液溜めタンク130、140は、装置本体102の前面パネルに着脱自在に取り付けられている。
【0021】
一方、ハンドスイッチ104には、装置本体102側に設けられた停止スイッチSW2と同様の停止スイッチSW3と、内視鏡側のバルーン20の加圧/減圧を指示する内視鏡ON/OFFスイッチSW4と、内視鏡側のバルーン20の圧力を保持するためのポーズスイッチSW5と、オーバーチューブ側のバルーン54の加圧/減圧を指示するオーバーチューブON/OFFスイッチSW6と、オーバーチューブ側のバルーン54の圧力を保持するためのポーズスイッチSW7とが設けられており、このハンドスイッチ104はコード150を介して装置本体102に電気的に接続されている。
【0022】
図3は挿入部先端70の斜視図、図4は挿入部先端70の断面図が示されている。同図において挿入部先端70は、湾曲部72と先端硬質部74とから構成され、湾曲部72は図1の挿入部12を構成する軟性部13の先端に連結されている。先端硬質部74は、その内側に対物光学系76、一対の照明用レンズ78、78、鉗子チャンネル(不図示)、及び送気送水チャンネル(不図示)等が密に配設されている。対物光学系76の出射端側にはプリズム80を介してCCDが設けられる。
【0023】
照明用レンズ78には、ライトガイドケーブル82の出射端が取り付けられている。ライトガイドケーブル82は、挿入部12に挿通配置されて不図示のライトガイドバーに連結されている。このライトガイドバーを光源装置に接続することにより、光源装置からの光が伝送され、ライトガイドケーブル82の出射端から照明用レンズ78を介して被写体に照射される。
【0024】
前述の如く挿入部先端70には、天然ゴム製で膨縮自在な薄膜のバルーン20が設けられている。このバルーン20は、湾曲部72の一部及び先端硬質部74の一部を覆う位置に設けられている。
【0025】
また、バルーン20に空気を供給及び吸引するエア供給チューブ19が挿入部先端70の内側に配設されている。また、図4の如くエア供給チューブ19の先端部19Aは、エルボ管84(流体流路)に固定され、エルボ管84は、先端硬質部74に形成された管連結部86の嵌合孔87に嵌合固定されている。管連結部86は、嵌合孔87に連通する凹部88を介して空気供給吸引口16に連通され、この空気供給吸引口16は先端硬質部74の外周面に開口されている。
【0026】
空気供給吸引口16が形成された位置は、バルーン20に覆われる位置であり、且つ湾曲部72を構成する外皮チューブ73の先端周部73Aと先端硬質部74とを連結するための接着剤90が塗布された位置である。この接着剤90は、外皮チューブ73の先端周部73Aを先端硬質部74の凹条部74Aに固定する糸巻部92の上から塗布され、糸巻部92上とその近傍で固化し、先端硬質部74の周方向において膨らみ部となって形成されている。
【0027】
また、接着剤90の膨らみ部には、空気供給吸引口16に連通した溝部94が形成され、この溝部94を介して空気供給吸引口16が膨らみ部から開口されている。また、溝部94は、図3の如く挿入部12の長手方向に沿って形成されている。なお、溝部94の形成方向は前記方向に限定されるものではなく、挿入部12の長手方向に直交する方向でもよい。また、溝部94の本数は1本に限定されるものではない。
【0028】
このように構成されたバルーン式内視鏡10によれば、エア供給チューブ19から空気供給吸引口16を介して空気を供給すればバルーン20を膨張させることができる。また、バルーン20を収縮させる場合には、バルーン20に供給した空気をエア供給チューブ19を介して吸引する。このとき、バルーン20が空気供給吸引口16を蓋をするように膨らみ部の表面に密着しても、空気は膨らみ部に形成された溝部94を介して空気供給吸引口16からエア供給チューブ19に流れ込む。よって、バルーン20内の空気を完全に排出することができ、バルーン20を完全に収縮させることができる。
【0029】
また、実施の形態のバルーン式内視鏡10によれば、挿入部先端70の湾曲部72と先端硬質部74とを接続するための接着剤90が塗布された膨らみ部に、すなわち、元々形成されている膨らみ部に、空気供給吸引口16と溝部94とを形成したので、空気供給吸引口16と溝部94とを形成することによる挿入部先端70の大径化を阻止することができる。
【0030】
図5は、内視鏡の挿入部先端の他の実施の形態を示す斜視図であり、図3に示した実施の形態と同一若しくは類似の部材については同一の符号を付してその説明は省略する。
【0031】
図5の実施の形態において、図3の実施の形態と異なる点は、先端硬質部74の基端部に、テーパ部74Aとフラット部74Bとからなる肉盛り部75を一体形成し、この肉盛り部75に空気供給吸引口16と溝94とを形成したものである。接着剤90による膨らみ部は、フラット部74Bと面一になるように形成され、見た目上、図3の実施の形態と同一形状に形成されている。このように、接着剤90による膨らみ部を利用して先端硬質部74に肉盛り部75を形成し、この部分に空気供給吸引口16と溝94とを形成しても、図3の実施の形態と実質的に同一の効果を奏する。
【0032】
【発明の効果】
以上説明したように本発明に係るバルーン式内視鏡によれば、内視鏡挿入部先端の湾曲部を構成する外皮チューブと先端硬質部とを接続するための接着剤が塗布された膨らみ部に、流体供給吸引口と溝部とを形成したので、流体供給吸引口と溝部とを形成することによる挿入部先端の大径化を阻止することができる。
【図面の簡単な説明】
【図1】本発明に係るバルーン式内視鏡が適用された内視鏡装置のシステム構成図
【図2】オーバーチューブの一部破断を含む要部拡大図
【図3】図1に示した内視鏡の挿入部先端の構成を示す拡大斜視図
【図4】図3に示した挿入部先端の断面図
【図5】内視鏡の挿入部先端の他の実施の形態を示す拡大斜視図
【符号の説明】
10…バルーン式内視鏡、12…挿入部、13…軟性部、14…手元操作部、16…空気供給吸引口、18…バルーン送気口、19…エア供給チューブ、20…バルーン、50…オーバーチューブ、54…バルーン、70…挿入部先端、72…湾曲部、73…外皮チューブ、74…先端硬質部、76…対物光学系、90…接着剤、94…溝部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a balloon-type endoscope, and more particularly to an endoscope in which an inflatable balloon is provided at the distal end of an endoscope insertion portion.
[0002]
[Prior art]
Some endoscope apparatuses used for gastrointestinal examinations have an inflatable / contractible thin film balloon attached to the outer periphery of the distal end of the endoscope insertion portion. Such a balloon-type endoscope is used for inserting an endoscope insertion part into a deep part of the intestine, supplying air to the balloon, inflating the balloon, and temporarily fixing it to the intestinal wall.
[0003]
A fluid channel is disposed in the endoscope insertion portion, and an outlet of the fluid channel is communicated with a fluid supply / suction port formed on an outer peripheral surface of the distal end of the insertion portion. Therefore, the balloon is inflated by supplying air from the fluid supply / suction port via the fluid channel, and the balloon is deflated by sucking the fluid from the fluid supply / suction port.
[0004]
By the way, in some conventional balloon endoscopes, a groove communicating with the fluid supply / suction port is formed on the outer peripheral surface of the distal end of the endoscope insertion portion (for example, Patent Document 1). According to this endoscope, when the fluid supplied to the balloon is sucked through the fluid passage, even if the balloon is in close contact with the fluid supply suction port and the vicinity thereof, the fluid flows into the fluid passage through the groove. Therefore, the fluid in the balloon can be completely discharged, and the balloon can be completely deflated.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 62-186701 [0006]
[Problems to be solved by the invention]
In the balloon-type endoscope of Patent Document 1, the groove is formed directly on the outer peripheral surface of the endoscope hard portion. For this reason, in order to secure the strength of the hard tip portion, it is necessary to increase the thickness of the hard tip portion, but the contents such as the objective optical system and the light guide are densely arranged in the hard tip portion. Therefore, it is not possible to fill the inner circumference. Therefore, the endoscope of Patent Document 1 has a drawback that the distal end hard portion has a large diameter because it is necessary to increase the outer diameter of the distal end hard portion to ensure the thickness.
[0007]
The present invention has been made in view of such circumstances, and in an endoscope in which a fluid supply / suction port and a groove are formed at the distal end of the endoscope insertion portion, the diameter of the distal end of the insertion portion is prevented from increasing. An object of the present invention is to provide a balloon-type endoscope that can perform the above.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention supplies and sucks fluid from a fluid supply / suction port opened in the outer peripheral surface to a balloon provided so as to cover the outer peripheral surface of the distal end of the endoscope insertion portion. In the balloon-type endoscope for expanding and contracting the balloon, the bulge portion to which an adhesive for connecting the outer tube and the distal end hard portion constituting the bending portion of the distal end of the endoscope insertion portion is applied, The fluid supply / suction port and a groove formed in a longitudinal direction of the insertion portion or in a direction orthogonal to the longitudinal direction and communicating with the fluid supply / suction port are formed, and the balloon includes a part of the curved portion and the It is characterized in that is provided at a position covering a portion of the distal end rigid portion.
[0009]
According to the present invention, the bulge portion to which the adhesive for connecting the outer tube constituting the bending portion at the distal end of the endoscope insertion portion and the distal end hard portion is applied, that is, the bulge portion originally formed. Since the fluid supply / suction port and the groove are formed, the diameter of the distal end of the insertion portion due to the formation of the fluid supply / suction port and the groove can be prevented.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a balloon endoscope according to the present invention will be described in detail with reference to the accompanying drawings.
[0011]
FIG. 1 is a system configuration diagram of an endoscope apparatus including a balloon-type endoscope and a balloon control device according to the present invention.
[0012]
The endoscope apparatus shown in FIG. 1 includes a double balloon endoscope composed of a balloon endoscope 10 and an overtube 50, and a balloon control apparatus 100.
[0013]
The balloon endoscope 10 is an electronic endoscope in which an objective optical system 76 (see FIG. 3), an image pickup device (CCD), and the like are provided at the distal end of the insertion portion 12, and an observation image is transmitted through the objective optical system 76. Then, it is imaged on the CCD, where it is photoelectrically converted. An electrical signal indicating an observation image that has been subjected to photoelectric conversion is output to a processor (not shown) via wiring in the insertion unit 12 and the hand operation unit 14, and is appropriately signal processed and then output to the monitor TV. Thereby, an observation image is displayed on the monitor TV.
[0014]
Further, an air supply / suction port (fluid supply / suction port) 16 described later is formed on the distal end side surface of the insertion portion 12 of the balloon endoscope 10, while a balloon air supply port 18 is formed on the hand operation unit 14 side. The air supply suction port 16 and the balloon air supply port 18 are connected by an air supply tube 19 (see FIG. 4: fluid passage) having an inner diameter of about 0.8 mm provided along the insertion portion 12. Yes.
[0015]
When the balloon endoscope 10 is used as a double balloon endoscope, the balloon 20 is placed on the distal end 70 of the insertion portion, and both ends of the balloon 20 are fixed with fixing rubber. As a result, air can be supplied from the balloon air supply port 18 into the balloon 20 through the air supply / suction port 16 to inflate the balloon 20, or to suck the air in the balloon 20 and deflate the balloon 20. it can.
[0016]
The overtube 50 shown in FIG. 2 is for inserting the insertion portion 12 of the balloon endoscope 10 into the deep part of the small intestine in cooperation with the balloon endoscope 10. It has an inner diameter slightly larger than the outer diameter of the insertion portion 12 and is flexible like the insertion portion 12 of the balloon endoscope 10.
[0017]
An air supply / suction port 52 is formed on the side of the distal end of the overtube 50, and a balloon 54 is attached around the distal end of the tube so as to surround the air supply / suction port 52. A balloon air supply port 56 is provided at the rear portion of the overtube 50. The balloon air supply port 56 and the air supply / suction port 52 are integrally formed along the outer periphery of the overtube 50 and have an inner diameter of about 1 mm. The air supply tube 58 is connected. With this configuration, air is supplied into the balloon 54 from the balloon air supply port 56 via the air supply tube 58 and the air supply suction port 52, and the balloon 54 is inflated, or the air in the balloon 54 is sucked into the balloon 54. It can be contracted. Reference numeral 60 is a water inlet for injecting lubricant (water) into the overtube 50.
[0018]
The balloon control device 100 shown in FIG. 1 is provided separately for each of the balloons 20 and 54 in order to inflate the balloon 20 at the distal end 70 of the balloon-type endoscope 10 and the balloon 54 at the distal end of the overtube 50 alternately. The apparatus body 102 is provided with a pump, a sequencer, and the like, and a hand switch 104 for remote control.
[0019]
On the front panel of the main body 102 of the balloon control device 100, a power switch SW1, a stop switch SW2, a pressure gauge 106 for the balloon 20, a pressure gauge 108 for the balloon 54, and the like are provided.
[0020]
Further, air supply / exhaust tubes 110 and 120 to the balloons 20 and 54 are attached to the front panel of the apparatus main body 102. In the middle of each tube 110, 120, an endoscope reservoir tank 130 and an overtube reservoir tank 140 are provided to prevent backflow of body fluid when the balloons 20, 54 are torn. The liquid reservoir tanks 130 and 140 are detachably attached to the front panel of the apparatus main body 102.
[0021]
On the other hand, the hand switch 104 includes a stop switch SW3 similar to the stop switch SW2 provided on the apparatus main body 102 side, and an endoscope ON / OFF switch SW4 that instructs pressurization / decompression of the balloon 20 on the endoscope side. A pause switch SW5 for maintaining the pressure of the balloon 20 on the endoscope side, an overtube ON / OFF switch SW6 for instructing pressurization / depressurization of the balloon 54 on the overtube side, and a balloon 54 on the overtube side A pause switch SW7 is provided for holding the pressure, and this hand switch 104 is electrically connected to the apparatus main body 102 via a cord 150.
[0022]
3 is a perspective view of the distal end 70 of the insertion portion, and FIG. 4 is a cross-sectional view of the distal end 70 of the insertion portion. In the drawing, an insertion portion distal end 70 is composed of a bending portion 72 and a distal end hard portion 74, and the bending portion 72 is connected to the distal end of the flexible portion 13 constituting the insertion portion 12 of FIG. The distal end hard portion 74 has an objective optical system 76, a pair of illumination lenses 78 and 78, a forceps channel (not shown), an air / water supply channel (not shown), and the like arranged densely. A CCD is provided on the exit end side of the objective optical system 76 via a prism 80.
[0023]
The light guide cable 82 has an exit end attached to the illumination lens 78. The light guide cable 82 is inserted through the insertion portion 12 and connected to a light guide bar (not shown). By connecting this light guide bar to the light source device, the light from the light source device is transmitted, and the subject is irradiated from the emission end of the light guide cable 82 via the illumination lens 78.
[0024]
As described above, the insertion portion distal end 70 is provided with the thin balloon 20 made of natural rubber and capable of expanding and contracting. The balloon 20 is provided at a position covering a part of the curved part 72 and a part of the distal end hard part 74.
[0025]
An air supply tube 19 that supplies and sucks air to the balloon 20 is disposed inside the distal end 70 of the insertion portion. Further, as shown in FIG. 4, the distal end portion 19 </ b> A of the air supply tube 19 is fixed to an elbow pipe 84 (fluid flow path), and the elbow pipe 84 is fitted into a fitting hole 87 of a pipe connecting portion 86 formed in the distal end hard portion 74. It is fitted and fixed to. The pipe connecting portion 86 is communicated with the air supply / suction port 16 via a recess 88 communicating with the fitting hole 87, and the air supply / suction port 16 is opened on the outer peripheral surface of the distal end hard portion 74.
[0026]
The position where the air supply / suction port 16 is formed is a position covered by the balloon 20, and an adhesive 90 for connecting the distal end peripheral portion 73 </ b> A of the outer tube 73 constituting the curved portion 72 and the distal end hard portion 74. Is the position where is applied. The adhesive 90 is applied from above the bobbin portion 92 that fixes the distal peripheral portion 73A of the outer tube 73 to the concave strip portion 74A of the hard end portion 74, and is solidified on and near the bobbin portion 92, and the hard end portion 74 is formed as a bulging portion in the circumferential direction.
[0027]
Further, a groove portion 94 communicating with the air supply / suction port 16 is formed in the bulge portion of the adhesive 90, and the air supply / suction port 16 is opened from the bulge portion through the groove portion 94. Moreover, the groove part 94 is formed along the longitudinal direction of the insertion part 12 like FIG. In addition, the formation direction of the groove part 94 is not limited to the said direction, The direction orthogonal to the longitudinal direction of the insertion part 12 may be sufficient. Further, the number of the groove portions 94 is not limited to one.
[0028]
According to the balloon endoscope 10 configured in this manner, the balloon 20 can be inflated if air is supplied from the air supply tube 19 through the air supply suction port 16. When the balloon 20 is deflated, the air supplied to the balloon 20 is sucked through the air supply tube 19. At this time, even if the balloon 20 is in close contact with the surface of the bulging portion so as to cover the air supply / suction port 16, the air is supplied from the air supply / suction port 16 through the groove 94 formed in the bulging portion. Flow into. Therefore, the air in the balloon 20 can be completely discharged, and the balloon 20 can be completely deflated.
[0029]
Further, according to the balloon endoscope 10 of the embodiment, the bulge portion to which the adhesive 90 for connecting the curved portion 72 and the distal end hard portion 74 of the insertion portion distal end 70 is applied, that is, originally formed. Since the air supply suction port 16 and the groove portion 94 are formed in the bulged portion, the increase in the diameter of the distal end 70 of the insertion portion due to the formation of the air supply suction port 16 and the groove portion 94 can be prevented.
[0030]
FIG. 5 is a perspective view showing another embodiment of the distal end of the insertion portion of the endoscope. The same or similar members as those in the embodiment shown in FIG. Omitted.
[0031]
The embodiment of FIG. 5 differs from the embodiment of FIG. 3 in that a built-up portion 75 composed of a tapered portion 74A and a flat portion 74B is integrally formed at the proximal end portion of the distal end hard portion 74. The air supply / suction port 16 and the groove 94 are formed in the raised portion 75. The bulging part by the adhesive 90 is formed so as to be flush with the flat part 74B, and is formed in the same shape as the embodiment of FIG. 3 in appearance. As described above, even if the bulging portion 75 is formed in the distal end hard portion 74 using the bulging portion by the adhesive 90 and the air supply suction port 16 and the groove 94 are formed in this portion, the embodiment of FIG. There is substantially the same effect as the form.
[0032]
【The invention's effect】
As described above, according to the balloon endoscope according to the present invention, the bulging portion to which the adhesive for connecting the outer tube constituting the bending portion at the distal end of the endoscope insertion portion and the distal end hard portion is applied. Furthermore, since the fluid supply / suction port and the groove are formed, the diameter of the distal end of the insertion portion due to the formation of the fluid supply / suction port and the groove can be prevented.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of an endoscope apparatus to which a balloon endoscope according to the present invention is applied. FIG. 2 is an enlarged view of a main part including a partially broken overtube. FIG. 4 is a cross-sectional view of the distal end of the insertion section shown in FIG. 3. FIG. 5 is an enlarged perspective view of another embodiment of the distal end of the insertion section of the endoscope. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Balloon type | mold endoscope, 12 ... Insertion part, 13 ... Soft part, 14 ... Hand operation part, 16 ... Air supply suction port, 18 ... Balloon air supply port, 19 ... Air supply tube, 20 ... Balloon, 50 ... Overtube, 54 ... balloon, 70 ... distal end of insertion portion, 72 ... curved portion, 73 ... outer tube, 74 ... hard end portion, 76 ... objective optical system, 90 ... adhesive, 94 ... groove portion

Claims (1)

内視鏡挿入部先端の外周面を覆うように設けられたバルーンに、前記外周面に開口された流体供給吸引口から流体を供給及び吸引することにより、前記バルーンを膨縮させるバルーン式内視鏡において、
前記内視鏡挿入部先端の湾曲部を構成する外皮チューブと先端硬質部とを連結するための接着剤が塗布された膨らみ部に、前記流体供給吸引口と、前記挿入部の長手方向又は長手方向と直交する方向に形成されて前記流体供給吸引口に連通する溝部とが形成され
前記バルーンは、前記湾曲部の一部及び前記先端硬質部の一部を覆う位置に設けられていることを特徴とするバルーン式内視鏡。
A balloon-type endoscope that expands and contracts the balloon by supplying and sucking fluid from a fluid supply / suction port opened in the outer peripheral surface to a balloon provided to cover the outer peripheral surface of the distal end of the endoscope insertion portion. In the mirror
The fluid supply / suction port and the longitudinal direction or longitudinal direction of the insertion portion are applied to a bulge portion to which an adhesive for connecting the outer tube constituting the bending portion of the distal end of the endoscope insertion portion and the hard end portion is applied. A groove formed in a direction orthogonal to the direction and communicating with the fluid supply / suction port is formed ,
The balloon endoscope , wherein the balloon is provided at a position covering a part of the curved portion and a part of the distal end hard portion .
JP2003131184A 2003-05-09 2003-05-09 Balloon endoscope Expired - Lifetime JP3918097B2 (en)

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JP2003131184A JP3918097B2 (en) 2003-05-09 2003-05-09 Balloon endoscope

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Publication number Priority date Publication date Assignee Title
JP4000485B2 (en) * 2005-02-28 2007-10-31 フジノン株式会社 Endoscope device
JP2008023102A (en) * 2006-07-21 2008-02-07 Fujinon Corp Endoscope
JP4977503B2 (en) * 2007-03-16 2012-07-18 富士フイルム株式会社 Endoscope
JP5296605B2 (en) * 2009-06-02 2013-09-25 富士フイルム株式会社 Structure for preventing opening and closing of expansion / contraction member, endoscope having the same, and insertion aid

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