JP4388204B2 - Endoscope - Google Patents

Endoscope Download PDF

Info

Publication number
JP4388204B2
JP4388204B2 JP2000164906A JP2000164906A JP4388204B2 JP 4388204 B2 JP4388204 B2 JP 4388204B2 JP 2000164906 A JP2000164906 A JP 2000164906A JP 2000164906 A JP2000164906 A JP 2000164906A JP 4388204 B2 JP4388204 B2 JP 4388204B2
Authority
JP
Japan
Prior art keywords
frequency
endoscope
treatment instrument
power supply
distal end
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 - Fee Related
Application number
JP2000164906A
Other languages
Japanese (ja)
Other versions
JP2001340284A (en
Inventor
鶴夫 羽鳥
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.)
Olympus Corp
Original Assignee
Olympus 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
Application filed by Olympus Corp filed Critical Olympus Corp
Priority to JP2000164906A priority Critical patent/JP4388204B2/en
Publication of JP2001340284A publication Critical patent/JP2001340284A/en
Application granted granted Critical
Publication of JP4388204B2 publication Critical patent/JP4388204B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Description

【0001】
【発明の属する技術分野】
本発明は、挿入部に形成した処置具挿通用チャンネルを通じて、体腔内に高周波処置具を挿入し、高周波処置を行なうようにした内視鏡に関する。
【0002】
【従来の技術】
近年、低侵襲であることから、内視鏡を利用して体腔内部位の外科手術を行なうことが多くなってきた。この場合、手術用の処置具は内視鏡の処置具挿通用チャンネルに挿通して体腔内に誘導される。
【0003】
高周波電流によって体腔内の組織部位の切除・切開あるいは止血等の処置を行なう場合、高周波処置具が用いられる。高周波処置具としては、高周波スネア、高周波凝固子等、処置目的に応じて種々の形式のものが提供されている。特開昭62−94147号公報には高周波スネア(電気メス)の例が示されている。
【0004】
高周波処置具の手元側端には体腔内の手術部位に高周波電流を供給するための給電端子が設けられ、この給電端子に内視鏡周辺装置の高周波電源から単独で延びる給電コード(アクティブケーブル)が直接に接続される。
【0005】
【発明が解決しようとする課題】
ところで、内視鏡の操作部にはライトガイドケーブルが接続されており、また、内視鏡にはライトガイドケーブルの他にも様々なケーブル類が接続されている。例えば、接眼部に装着されるTVカメラヘッドのケーブル、内視鏡の灌流用チャンネルに接続される送水用チューブや吸引チューブなどがある。さらに、高周波処置具を使用する場合には、処置具の手元部にある給電端子に接続される給電コードが加わる。
【0006】
内視鏡の操作部周辺は、内視鏡や処置具等の操作を集中的に行なう領域であるにも拘わらず、本来、様々な多くのケーブル類が配設されている。特に、高周波処置具を使用する場合には、高周波電源から延びる給電コードが加わり、これらのケーブル類が入り乱れて術者の内視鏡や処置具の円滑な操作を妨げる原因になっていた。
【0007】
本発明は上記問題点に着目してなされたもので、高周波処置具の使用に際して術者の操作性を極力妨げない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】
請求項1に対応する発明は、体腔内の観察部位を挿入部の先端部から照明して観察すると共に、上記挿入部に内装され、この挿入部の先端と上記挿入部の基端に設けられた操作部においてそれぞれ開口するチャンネル内に挿通される高周波処置具によって体腔内部位を高周波電流で処置するようにした内視鏡において、
上記操作部上に高周波処置具に高周波電流を給電するための電気端子を設ける共に、一端が高周波電源装置に接続される高周波電流供給用アクティブコードを上記操作部から延出される照明光伝達用ケーブルに配設し、上記高周波電流供給用アクティブコードの他端を上記電気端子に接続したことを特徴とするものである。
【0009】
請求項2に対応する発明は、請求項1に対応する発明において、照明光伝達用ケーブルの延出先端部を分岐し、片方のケーブル部に光源接続用コネクターを設け、他方のケーブル部に上記高周波電流供給用アクティブコードの他端を接続した高周波電源接続用コネクターを設けたことを特徴とするものである。
【0010】
高周波処置具を作用させるための上記高周波電流供給用アクティブコードが内視鏡周辺に単独で露出して引き回されることがないので、高周波処置具の使用に際して術者の操作性を極力妨げないようになる。
【0011】
【発明の実施の形態】
(第1実施形態)
図1〜4を参照して本発明の一実施形態に係る内視鏡について説明する。
【0012】
図1中、符号1は内視鏡を示す。内視鏡1は、長尺な挿入部2と、挿入部2の基端に設けられた操作部3とを備え、操作部3には接眼部4が設けられている。操作部3には可撓性のライトガイドケーブル(照明光伝達用ケーブル)5が接続されている。
【0013】
上記挿入部2内には内視鏡画像を伝達するイメージガイドファイバー(図示せず)と、照明光を伝達するライトガイドファイバー(図示せず)と、生検等の処置を行うための処置具が挿通される処置具挿通用チャンネルを形成するチューブ(図示せず)が配設されている。
【0014】
上記イメージガイドファイバーは挿入部2から操作部3の接眼部4にわたって内装されており、挿入部先端に設けられた観察窓から見た視野像を接眼部4に伝達する。上記ライトガイドファイバーは挿入部2から操作部3を経てライトガイドケーブル5にわたり延長してそれらに内装されている。
【0015】
図2で示すように、ライトガイドケーブル5の延出先端には周辺装置の内視鏡用光源装置(図示せず)に接続するための光源コネクタ6が設けられている。光源コネクタ6を内視鏡用光源装置に接続することにより、その光源の光がライトガイドファイバーを通じて挿入部先端に設けられた照明窓に送られ、その照明窓から観察視野内に向けて出射される。
【0016】
上記操作部3の外装カバー7における先端側上部には上記処置具挿通用チャンネルの基端が開口するチャンネル開口部11が形成されている(図3参照)。
【0017】
また、処置具挿通用チャンネルの先端は挿入部先端に開口されており、その先端開口から処置具挿通用チャンネルに挿通されてきた処置具を前方へ突き出せるようになっている。処置具挿通用チャンネルの先端開口部には前方へ突き出す処置具の向きを変える起上機構を設けても良い。
【0018】
上記チャンネル開口部11にはシリンジ等が接続可能なルアーロック形状の口金12が設けられている。
【0019】
また、図2及び図3で示すように、口金12には上記チャンネルに送水しながら、そのチャンネルに処置具を挿通させるための送水/処置具挿通用アダプター13が接続可能である。
【0020】
また、操作部3の基端側上方部位には、給電用電気端子(高周波電流端子)15が設けられている。この電気端子15には高周波電流供給用アクティブコードを構成する給電用電線16が接続されている。この給電用電線16はその一端が上記電気端子15に接続され、給電用電線16の他端側部分が操作部3内を経て上記ライトガイドケーブル5内に配設され、さらに、ライトガイドケーブル5の延出先端部途中から分岐する可撓性の電源ケーブル17内に導かれている。電源ケーブル17の延出先端には周辺装置の内視鏡用高周波電源装置(図示せず)に接続するための電源コネクタ18が設けられている。電源コネクタ18を内視鏡用高周波電源装置に接続することにより、給電用電線16は高周波電源に接続される。
【0021】
上記電気端子15には図2で示すように、接続コード20が着脱自在に接続されるようになっている。接続コード20はその一端に上記電気端子15に接続するコネクタ21を設け、他端に高周波処置具22の接続端子に接続するコネクタ23が設けてある。
【0022】
高周波処置具22としては高周波スネアや高周波凝固子等が用いられるが、ここでは高周波凝固子である。この形式の場合、高周波処置具22は、処置具挿通用チャンネルに挿通できる電気的絶縁性の挿入チューブ25に給電線を内装してなり、挿入チューブ25の先端に高周波凝固部26を設け、挿入チューブ25の基端に給電用接続端子27を設けてある。高周波凝固部26は上記給電線を介して給電用接続端子27に接続されている。
【0023】
尚、高周波スネアの場合は、内視鏡のチャンネルに挿通されるチューブと、このチューブの手元側端に設けられた手元部と、上記チューブに挿通された導電ワイヤの先端に接続される高周波スネアワイヤとを備えてなり、手元部には給電用接続端子(プラグ)が設けられる。
【0024】
次に、上記チャンネル開口部11の口金12に対して選択的に装着される上記送水/処置具挿通用アダプター13について説明する。図2及び図3は送水/処置具挿通用アダプター13を内視鏡1の口金12に取り付けた状態を示している。また、図3中で示す如く、内視鏡取付側を先端側、処置具挿入側を手元側と称す。
【0025】
送水/処置具挿通用アダプター13は筒状の本体31を有しており、この本体31の手元側端部には弁体32が設けられ、本体31の先端側には固定部33が設けられている。
【0026】
上記本体31はポリフェニルスルフォン等の電気的絶縁性の硬質な部材によって作られ、この本体31には長手方向に沿って貫通する処置具挿通路35が形成されている。本体31の中途上側壁には本体軸方向に略垂直な方向に突き出す送水用口金36が設けられている。送水用口金36には上記処置具挿通路35と連通すると共にその処置具挿通路35の軸方向に略垂直な方向に延びる送水路37が形成されている。送水用口金36の突出先端にはフランジ部38が設けられていて、図示しないシリンジなどの器具を着脱自在に装着できるようになっている。
【0027】
本体31の手元側端にはフランジ部41が設けられている。フランジ部41には上記弁体32が着脱自在に取り付けられている。弁体32はシリコンゴムなどの電気的絶縁性の弾性部材によって略円筒状に形成されており、その先端側端内周面には上記フランジ部41に係合可能な溝部42を形成し、この溝部42を上記フランジ部41に弾性的に係合させるようになっている。弁体32の手元側端部には処置具を密に挿通する挿入口としてのスリット43が設けられている。
【0028】
上記送水/処置具挿通用アダプター13の固定部33は以下の如く構成されている。すなわち、固定部33はステンレス等の金属からなる略筒状の接続部材45と、接続部材45に外装され、同じくステンレス等の金属からなる略筒状の固定ネジ部材46を含み、この固定ネジ部材46の外周面を露出しないように覆うポリフェニルスルフォン等の電気的絶縁性の硬質部材からなるキャップ状の固定カバー47で覆ってなる固定つまみ48と、接続部材45に外装され、軸方向に弾性変形するばね座金等の弾性部材49と、シリコンゴム等の電気的絶縁性の弾性部材からなるシール部51とによって構成されている。
【0029】
上記接続部材45はその手元側端部が上記本体31にねじ込み接着等の手段で固定されている。また、接続部材45の先端側外周面は内視鏡1の口金12のルアーテーパ内周面と嵌合可能なルアーテーパ部52として形成されている。
【0030】
上記ルアーテーパ部52の手元側には円環状に突出したストッパー部53が設けられている。また、上記固定ネジ部材46は略円筒状に形成されるが、その先端側内周面には内視鏡1のルアーテーパ形式の口金12に形成された係合部54と係合可能なネジ部55が設けられている。
【0031】
上記固定ネジ部材46の手元側内周には上記接続部材45の外径よりも若干大き目の内径を有する係合部56が形成されており、この係合部56は上記接続部材45にその軸周りに回動自在に嵌合されている。
【0032】
上記固定ネジ部材46のネジ部55と上記係合部56の間にはそのネジ部55の内径よりも大きな内径を有する固定部内空部57が形成され、その側壁部には固定部内空部57の内径と略同等の長さで、上記弾性部材49が挿入可能なスリット59が軸方向に垂直に開口されている。上記弾性部材49は係合部56と上記ストッパー部53の間に位置している。弾性部材49の外径は固定ネジ部材46のねじ部55の内径よりも大きい。
【0033】
また、係合部56には軸方向に貫通した穴61が少なくとも1つ設けられている。なお、穴61は丸穴でも接続部材45の軸回りに沿ったU字状の穴でもそれ以外の形状であっても良い。
【0034】
また、上記固定つまみ48の固定カバー47外周面は手元側に向ってその径が小さくなっていくようなテーパ形状に形成されている。
【0035】
上記シール部51は略円筒状の部材からなり、インサート成形などの方法で固定つまみ48に一体的に組み付けられ、固定ネジ部材46の先端から先端側部分が突き出すように設けられている。上記シール部51はアダプター13を内視鏡1の口金12に取り付けた状態で、少なくともルアーテーパ形式の口金12が突出している側の端面65に接する長さを有している。また、シール部51の先端部分の外径はルアーテーパ形式の口金12に位置する外装カバー7の部分の内径よりも小さく形成されている。
【0036】
そして、固定つまみ48のネジ部55と、内視鏡1側のルアーテーパ形式の口金12の係合部54を嵌合させた状態で、固定つまみ48を回転させていくと、固定つまみ48はルアーテーパ形式口金12の方へ引き込まれていき、係合部56とストッパー部53の間隔の幅は狭くなっていく。これによって、弾性部材49は軸方向に潰され、その反力により、係合部56を介して固定つまみ48が手元側へ、ストッパー部53を介してルアーテーパ部52が先端側へそれぞれ押圧される。
【0037】
次に、内視鏡1を使用する時の作用について説明する。前述のチャンネル開口部11の口金12に送水/処置具挿通用アダプター13を装着する。そして、図2で示すように、送水/処置具挿通用アダプター13から内視鏡1の処置具挿通用チャンネルに高周波凝固子形式の高周波処置具22を挿入する。高周波処置具22の先端は挿入部2の先端より前方へ突き出ている。
【0038】
高周波処置具22の給電用接続端子27と、内視鏡1の電気端子15に接続コード20を接続する。これによって、接続コード20を介して高周波処置具22の給電用接続端子27に内視鏡1に組み込まれた給電用電線16が電気的に接続される。
【0039】
ライトガイドケーブル5の光源コネクタ6を内視鏡用光源装置に接続し、ライトガイドケーブル5の延出先端部途中から分岐する電源ケーブル17の電源コネクタ18を内視鏡用高周波電源装置に接続する。
【0040】
高周波電源装置のスイッチをONにすると、アクティブ電流は、電源コネクタ18に入力され、さらに給電用電線16と接続コード20を介して、高周波処置具22の給電用接続端子27に入力される。
【0041】
上記送水/処置具挿通用アダプター13を装着した場合、その送水用口金36に図示しないシリンジなどの器具を装着して内視鏡1のチャンネルに送水等を行なうことができる。
【0042】
本実施形態では接続コード20を使って高周波処置具22の給電用接続端子27に接続する例を示したが、高周波処置具22の接続端子27を直接に内視鏡1の高周波電気端子15に接続する形式であってもよいことは言うまでもない。
【0043】
また、ライトガイドケーブル5の延出先端部途中からケーブルを二股に分岐して、分岐した一方のケーブル部の先端に光源コネクタ6を設け、他方のケーブル部の先端に電源コネクタ18を接続するようにしたが、光源コネクタ6に接続端子を設け、この接続端子に高周波電源装置に通じる電源ケーブルを接続するようにしてもよい。
【0044】
上記実施形態では内視鏡1のチャンネル開口部11の口金12に対して送水/処置具挿通用アダプター13を装着し、その送水/処置具挿通用アダプター13を通じて内視鏡1の処置具挿通用チャンネルに高周波処置具を挿通するようにしたが、内視鏡1の口金12に送水/処置具挿通用アダプター13を装着せずに内視鏡1のチャンネル開口部11に対して直接に高周波処置具を挿入するようにしてもよい。
【0045】
上記送水/処置具挿通用アダプター13は、上記固定つまみ48の係合部56と上記ストッパー53の間には弾性部材49が介在している構成であるため、固定つまみ48をルアーテーパ口金12の係合部54にねじ込んでいくと、ネジ部55とルアーテーパ口金12の係合部54およびルアーテーパ部52とルアーテーパ口金12同士の押圧力が働くため、アダプター13及びルアーテーパ口金12が共にステンレス等の、硬度が高く変形しにくい材料で形成されていても、内視鏡1に対してルアーテーパ部52及び固定つまみ48が不用意に回転せずに確実に固定することが可能となる。
【0046】
また、固定ネジ46の側面には固定部内空部57の内径と略同等の長さで、弾性部材49が挿入可能なスリット59が軸方向に垂直に設けられているため、ネジ部55の内径よりも大きな外径のばね座金等の弾性部材49、すなわち、より大きな弾性力を有する弾性部材49を固定部内空部57に挿入できる。その結果、ネジ部55とルアーテーパ口金12の係合部54およびルアーテーパ部52とルアーテーパ口金12同士の押圧力を大きくすることができるため、内視鏡1に対してルアーテーパ部52及び固定つまみ48が不用意に回転せずにアダプター13が確実に固定される。
【0047】
また、術者は固定つまみ48を図4で示すようにつまむが、上記固定つまみ48の外周面は手元側に向ってその径が小さくなっていくようなテーパ形状に形成されているので、術者にとっての固定つまみ48の操作性が向上する。
【0048】
また、係合部56には軸方向に貫通した少なくとも1つの穴61が設けられている。これによると、アダプター13を洗浄する際に洗浄液はネジ部55とルアーテーパ部52の隙間71から固定部内空部57に入り穴61から抜けていくので、洗浄液が通りやすく確実に洗浄可能である。
【0049】
また、シール部51の外径はルアーテーパ口金12の外装カバー66の内径よりも小さいので、アダプター13を内視鏡1に取り付ける際、シール部51の先端が外装カバー66の角72に接触して変形することがない。また、シール部51の先端が端面65に押しつけられても、外装カバー66の内面73に付勢され、大きく変形することがない。そのため、アダプター13の着脱を繰り返しても変形によるシール部51の切れなどを防ぐことができる。
本発明は上記の実施形態のものに限定されるものではない。また、内視鏡と併用される高周波処置具としては以下のようなものであってもよい。
【0050】
1.可撓性のシースと、このシースの管路内に挿通され、手元側においての進退操作が可能な導電性操作ワイヤと、この操作ワイヤの先端に取り付けられ上記シースの先端部において被切開組織を把持してその把持部を上記シースの先端に引き付ける進退自在なスネアワイヤと、上記操作ワイヤの後端に接続され上記操作ワイヤを押し引きしてスネアワイヤを作動する操作部と、この操作部に設けられた高周波電源接続用プラグと、このプラグから操作部の部材及び上記操作ワイヤを介して上記スネアワイヤに高周波を通電するための導電手段とを具備した高周波スネア。
【0051】
2.可撓性のシースと、このシース内に進退自在に挿通され挿通され、手元側においての進退操作が可能な導電性の操作ワイヤと、この操作ワイヤの先端に連結され上記シースの先端部において生体組織を掴み取るための一対の採取カップと、上記シースの後端に接続され上記操作ワイヤを押し引きして上記採取カップを開閉動作させる操作部と、この操作部に設けられた高周波電源接続用プラグと、このプラグから操作部の部材及び挿入部内の部材を介して上記鉗子カップに高周波を通電するための導電手段とを具備した内視鏡用高周波生検具。
【0052】
3.可撓性のシースと、このシースの管路内に進退自在に挿通された導電性操作ワイヤと、この操作ワイヤの先端に取り付けられたナイフワイヤと、上記操作ワイヤの後端に接続され上記操作ワイヤを押し引きして上記ナイフワイヤを上記シース先端部に対して突没動作させる操作部と、この操作部に設けられた高周波電源接続用プラグと、このプラグから操作部の部材及び上記操作ワイヤを介して上記ナイフワイヤに高周波を通電するための導電手段とを具備した内視鏡用高周波ナイフ。
【0053】
【発明の効果】
以上説明したように本発明によれば、通常はアクティブコードの大部分が内視鏡の構造物に組み込まれるため、アクティブコードが独立して術野に引き回されることがなく、高周波処置具の使用に際して術者の操作性を妨げない。このことで、不用意にケーブル類が足に引っかかる等のトラブルも減り、内視鏡を容易に使用することができる。
【図面の簡単な説明】
【図1】本発明の一実施形態に係る内視鏡の側面図。
【図2】上記内視鏡を使用する場合の形態の説明図。
【図3】上記内視鏡のチャンネル開口部に装着された送水/処置具挿通用アダプターの縦断面図。
【図4】上記送水/処置具挿通用アダプターの固定つまみを従者が摘んだ状態の説明図。
【符号の説明】
1…内視鏡、2…挿入部、3…操作部、
5…ライトガイドケーブル(照明光伝達用ケーブル)
6…光源コネクタ、11…チャンネル開口部、
12…口金、15…給電用電気端子(高周波電流端子)、
16…給電用電線、17…電源ケーブル、18…電源コネクタ、
20…接続コード、22…高周波処置具、27…給電用接続端子。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscope in which a high-frequency treatment instrument is inserted into a body cavity through a treatment instrument insertion channel formed in an insertion portion to perform high-frequency treatment.
[0002]
[Prior art]
In recent years, since it is minimally invasive, surgical operation of a body cavity site using an endoscope has been frequently performed. In this case, the surgical treatment tool is inserted into the treatment tool insertion channel of the endoscope and guided into the body cavity.
[0003]
When performing a treatment such as excision / incision or hemostasis of a tissue site in a body cavity with a high-frequency current, a high-frequency treatment tool is used. Various types of high-frequency treatment tools are provided depending on the purpose of treatment, such as a high-frequency snare and a high-frequency coagulator. Japanese Patent Laid-Open No. 62-94147 shows an example of a high-frequency snare (electric knife).
[0004]
A power supply terminal for supplying a high-frequency current to the surgical site in the body cavity is provided at the proximal end of the high-frequency treatment instrument, and a power supply cord (active cable) extending independently from the high-frequency power supply of the endoscope peripheral device to this power supply terminal Are connected directly.
[0005]
[Problems to be solved by the invention]
Incidentally, a light guide cable is connected to the operation portion of the endoscope, and various cables are connected to the endoscope in addition to the light guide cable. For example, there are a cable of a TV camera head attached to the eyepiece, a water supply tube and a suction tube connected to the perfusion channel of the endoscope. Furthermore, when using a high frequency treatment tool, a power supply cord connected to a power supply terminal at the hand of the treatment tool is added.
[0006]
In the vicinity of the operation section of the endoscope, although it is an area where operations of the endoscope, the treatment tool, and the like are concentrated, many various types of cables are originally arranged. In particular, when a high-frequency treatment instrument is used, a power supply cord extending from the high-frequency power supply is added, and these cables are confused to prevent smooth operation of the operator's endoscope and treatment instrument.
[0007]
The present invention has been made paying attention to the above problems, and an object of the present invention is to provide an endoscope that does not hinder the operability of an operator as much as possible when using a high-frequency treatment instrument.
[0008]
[Means for Solving the Problems]
The invention corresponding to claim 1 illuminates and observes the observation site in the body cavity from the distal end portion of the insertion portion, is provided in the insertion portion, and is provided at the distal end of the insertion portion and the proximal end of the insertion portion. In an endoscope in which a site in a body cavity is treated with a high-frequency current by a high-frequency treatment tool that is inserted into a channel that is opened in each operation unit,
An illumination light transmission cable in which an electric terminal for supplying high-frequency current to the high-frequency treatment instrument is provided on the operation unit, and an active cord for supplying high-frequency current, one end of which is connected to a high-frequency power supply device, is extended from the operation unit The other end of the high-frequency current supply active cord is connected to the electrical terminal.
[0009]
The invention corresponding to claim 2 is the invention corresponding to claim 1, wherein the extending tip of the illumination light transmission cable is branched, the light source connection connector is provided in one cable part, and the cable part is provided with the light source connection connector. A high-frequency power source connection connector is provided to which the other end of the high-frequency current supply active cord is connected.
[0010]
The active cord for supplying a high-frequency current for operating the high-frequency treatment tool is not exposed and routed around the endoscope alone, so that the operability of the operator is not hindered as much as possible when using the high-frequency treatment tool. It becomes like this.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
An endoscope according to an embodiment of the present invention will be described with reference to FIGS.
[0012]
In FIG. 1, reference numeral 1 denotes an endoscope. The endoscope 1 includes a long insertion portion 2 and an operation portion 3 provided at the proximal end of the insertion portion 2, and the operation portion 3 is provided with an eyepiece portion 4. A flexible light guide cable (illumination light transmission cable) 5 is connected to the operation unit 3.
[0013]
An image guide fiber (not shown) for transmitting an endoscope image, a light guide fiber (not shown) for transmitting illumination light, and a treatment tool for performing a biopsy or the like in the insertion portion 2 A tube (not shown) that forms a treatment instrument insertion channel through which is inserted is disposed.
[0014]
The image guide fiber is provided from the insertion unit 2 to the eyepiece 4 of the operation unit 3, and transmits the visual field image viewed from the observation window provided at the distal end of the insertion unit to the eyepiece 4. The light guide fiber extends from the insertion portion 2 through the operation portion 3 to the light guide cable 5 and is built therein.
[0015]
As shown in FIG. 2, a light source connector 6 for connecting to an endoscope light source device (not shown) of a peripheral device is provided at the extending end of the light guide cable 5. By connecting the light source connector 6 to the endoscope light source device, the light of the light source is sent to the illumination window provided at the distal end of the insertion portion through the light guide fiber, and emitted from the illumination window toward the observation field of view. The
[0016]
A channel opening 11 in which the proximal end of the treatment instrument insertion channel is opened is formed in the upper part of the distal end side of the outer cover 7 of the operation unit 3 (see FIG. 3).
[0017]
Further, the distal end of the treatment instrument insertion channel is opened at the distal end of the insertion portion, and the treatment instrument inserted into the treatment instrument insertion channel can be projected forward from the distal end opening. A raising mechanism for changing the direction of the treatment instrument protruding forward may be provided at the distal end opening of the treatment instrument insertion channel.
[0018]
The channel opening 11 is provided with a luer lock-shaped base 12 to which a syringe or the like can be connected.
[0019]
As shown in FIGS. 2 and 3, a water supply / treatment instrument insertion adapter 13 can be connected to the base 12 for inserting a treatment instrument through the channel while supplying water to the channel.
[0020]
In addition, a power supply electrical terminal (high-frequency current terminal) 15 is provided at an upper part on the proximal end side of the operation unit 3. The electric terminal 15 is connected to a power supply wire 16 constituting an active cord for supplying high-frequency current. One end of the power supply wire 16 is connected to the electric terminal 15, the other end portion of the power supply wire 16 is disposed in the light guide cable 5 through the operation unit 3, and the light guide cable 5. Is led into a flexible power cable 17 that branches off from the middle of the extended tip. A power connector 18 for connecting to an endoscope high-frequency power supply device (not shown) of the peripheral device is provided at the extending end of the power cable 17. By connecting the power connector 18 to the endoscope high frequency power supply device, the power supply wire 16 is connected to the high frequency power supply.
[0021]
As shown in FIG. 2, a connection cord 20 is detachably connected to the electrical terminal 15. The connection cord 20 has a connector 21 connected to the electrical terminal 15 at one end and a connector 23 connected to the connection terminal of the high-frequency treatment instrument 22 at the other end.
[0022]
As the high-frequency treatment instrument 22, a high-frequency snare, a high-frequency coagulator, or the like is used. In the case of this type, the high-frequency treatment instrument 22 has a power supply line built in an electrically insulating insertion tube 25 that can be inserted into a treatment instrument insertion channel, and a high-frequency coagulation portion 26 is provided at the distal end of the insertion tube 25 for insertion. A power supply connection terminal 27 is provided at the proximal end of the tube 25. The high frequency coagulation unit 26 is connected to the power supply connection terminal 27 via the power supply line.
[0023]
In the case of a high-frequency snare, a high-frequency snare wire connected to a tube inserted into the endoscope channel, a proximal portion provided at the proximal end of the tube, and a tip of a conductive wire inserted into the tube. And a power supply connection terminal (plug) is provided at the hand portion.
[0024]
Next, the water / treatment instrument insertion adapter 13 that is selectively attached to the base 12 of the channel opening 11 will be described. 2 and 3 show a state in which the water supply / treatment instrument insertion adapter 13 is attached to the base 12 of the endoscope 1. Further, as shown in FIG. 3, the endoscope attachment side is referred to as the distal end side, and the treatment instrument insertion side is referred to as the proximal side.
[0025]
The water supply / treatment instrument insertion adapter 13 has a cylindrical main body 31, a valve body 32 is provided at the proximal end portion of the main body 31, and a fixing portion 33 is provided at the distal end side of the main body 31. ing.
[0026]
The main body 31 is made of an electrically insulating hard member such as polyphenylsulfone, and a treatment instrument insertion passage 35 penetrating along the longitudinal direction is formed in the main body 31. A water supply base 36 protruding in a direction substantially perpendicular to the axial direction of the main body is provided on the middle side wall of the main body 31. The water supply base 36 is formed with a water supply passage 37 that communicates with the treatment instrument insertion passage 35 and extends in a direction substantially perpendicular to the axial direction of the treatment instrument insertion passage 35. A flange portion 38 is provided at the protruding tip of the water supply base 36 so that an instrument such as a syringe (not shown) can be detachably attached.
[0027]
A flange portion 41 is provided at the proximal end of the main body 31. The valve body 32 is detachably attached to the flange portion 41. The valve body 32 is formed in a substantially cylindrical shape by an electrically insulating elastic member such as silicon rubber, and a groove portion 42 that can be engaged with the flange portion 41 is formed on the inner peripheral surface of the distal end side. The groove portion 42 is elastically engaged with the flange portion 41. A slit 43 is provided at the proximal end of the valve body 32 as an insertion port through which the treatment instrument is inserted.
[0028]
The fixing portion 33 of the water supply / treatment instrument insertion adapter 13 is configured as follows. That is, the fixing portion 33 includes a substantially cylindrical connecting member 45 made of a metal such as stainless steel, and a substantially cylindrical fixing screw member 46 which is externally mounted on the connecting member 45 and is also made of a metal such as stainless steel. 46 is covered with a cap-shaped fixing cover 47 made of an electrically insulating hard member such as polyphenylsulfone that covers the outer peripheral surface of 46 so as not to be exposed, and is externally attached to the connecting member 45 and elastic in the axial direction. An elastic member 49 such as a spring washer that is deformed and a seal portion 51 made of an electrically insulating elastic member such as silicon rubber are included.
[0029]
The proximal end of the connection member 45 is fixed to the main body 31 by means such as screwing and bonding. The outer peripheral surface on the distal end side of the connecting member 45 is formed as a luer taper portion 52 that can be fitted to the inner peripheral surface of the luer taper of the base 12 of the endoscope 1.
[0030]
On the proximal side of the luer taper portion 52, a stopper portion 53 protruding in an annular shape is provided. Further, the fixing screw member 46 is formed in a substantially cylindrical shape, and a screw portion engageable with an engaging portion 54 formed on the luer taper type base 12 of the endoscope 1 on the inner peripheral surface of the distal end side thereof. 55 is provided.
[0031]
An engagement portion 56 having an inner diameter slightly larger than the outer diameter of the connection member 45 is formed on the inner periphery on the proximal side of the fixing screw member 46, and the engagement portion 56 is connected to the connection member 45 with its axis. It is fitted so that it can rotate freely.
[0032]
Between the screw portion 55 of the fixing screw member 46 and the engaging portion 56, a fixing portion inner space portion 57 having an inner diameter larger than the inner diameter of the screw portion 55 is formed, and the fixing portion inner space portion 57 is formed on the side wall portion thereof. A slit 59 into which the elastic member 49 can be inserted is opened perpendicularly to the axial direction. The elastic member 49 is located between the engaging portion 56 and the stopper portion 53. The outer diameter of the elastic member 49 is larger than the inner diameter of the screw portion 55 of the fixed screw member 46.
[0033]
Further, the engaging portion 56 is provided with at least one hole 61 penetrating in the axial direction. The hole 61 may be a round hole, a U-shaped hole around the axis of the connection member 45, or another shape.
[0034]
Further, the outer peripheral surface of the fixed cover 47 of the fixed knob 48 is formed in a tapered shape such that the diameter thereof decreases toward the hand side.
[0035]
The seal portion 51 is made of a substantially cylindrical member, is integrally assembled with the fixing knob 48 by a method such as insert molding, and is provided so that the tip end portion protrudes from the tip of the fixing screw member 46. The seal portion 51 has a length that contacts at least the end surface 65 on the side from which the luer taper type cap 12 protrudes in a state where the adapter 13 is attached to the cap 12 of the endoscope 1. Further, the outer diameter of the tip portion of the seal portion 51 is formed smaller than the inner diameter of the portion of the exterior cover 7 located on the luer taper type base 12.
[0036]
Then, when the fixing knob 48 is rotated in a state in which the screw portion 55 of the fixing knob 48 and the engaging portion 54 of the luer taper type cap 12 on the endoscope 1 side are fitted, the fixing knob 48 becomes a luer taper. The width of the gap between the engaging portion 56 and the stopper portion 53 becomes narrower as it is drawn toward the type die 12. As a result, the elastic member 49 is crushed in the axial direction, and by the reaction force, the fixing knob 48 is pressed toward the proximal side via the engaging portion 56 and the luer taper portion 52 is pressed toward the distal end side via the stopper portion 53. .
[0037]
Next, an operation when the endoscope 1 is used will be described. A water supply / treatment instrument insertion adapter 13 is attached to the base 12 of the channel opening 11 described above. Then, as shown in FIG. 2, a high-frequency coagulator-type high-frequency treatment instrument 22 is inserted into the treatment instrument insertion channel of the endoscope 1 from the water supply / treatment instrument insertion adapter 13. The distal end of the high-frequency treatment instrument 22 protrudes forward from the distal end of the insertion portion 2.
[0038]
The connection cord 20 is connected to the power supply connection terminal 27 of the high-frequency treatment instrument 22 and the electrical terminal 15 of the endoscope 1. As a result, the power supply wire 16 incorporated in the endoscope 1 is electrically connected to the power supply connection terminal 27 of the high-frequency treatment instrument 22 via the connection cord 20.
[0039]
The light source connector 6 of the light guide cable 5 is connected to the endoscope light source device, and the power connector 18 of the power cable 17 branched from the middle of the extending tip of the light guide cable 5 is connected to the endoscope high frequency power supply device. .
[0040]
When the switch of the high frequency power supply device is turned on, the active current is input to the power connector 18 and further input to the power supply connection terminal 27 of the high frequency treatment instrument 22 via the power supply wire 16 and the connection cord 20.
[0041]
When the water supply / treatment instrument insertion adapter 13 is attached, an instrument such as a syringe (not shown) can be attached to the water supply base 36 and water can be supplied to the channel of the endoscope 1.
[0042]
In the present embodiment, an example in which the connection cord 20 is used to connect to the power supply connection terminal 27 of the high-frequency treatment instrument 22 is shown, but the connection terminal 27 of the high-frequency treatment instrument 22 is directly connected to the high-frequency electrical terminal 15 of the endoscope 1. Needless to say, it may be connected.
[0043]
Further, the cable is bifurcated from the middle of the extended tip of the light guide cable 5, the light source connector 6 is provided at the tip of one of the branched cables, and the power connector 18 is connected to the tip of the other cable. However, the light source connector 6 may be provided with a connection terminal, and a power cable leading to the high frequency power supply device may be connected to the connection terminal.
[0044]
In the above embodiment, the water supply / treatment instrument insertion adapter 13 is attached to the base 12 of the channel opening 11 of the endoscope 1, and the treatment instrument insertion of the endoscope 1 is performed through the water supply / treatment instrument insertion adapter 13. The high-frequency treatment instrument is inserted into the channel, but the high-frequency treatment is directly applied to the channel opening 11 of the endoscope 1 without attaching the water supply / treatment instrument insertion adapter 13 to the base 12 of the endoscope 1. A tool may be inserted.
[0045]
Since the water supply / treatment instrument insertion adapter 13 has a configuration in which an elastic member 49 is interposed between the engaging portion 56 of the fixed knob 48 and the stopper 53, the fixed knob 48 is connected to the luer taper base 12. When screwed into the mating portion 54, the pressing force of the threaded portion 55 and the engaging portion 54 of the luer taper base 12 and the luer taper portion 52 and the luer taper base 12 acts. Even if the lure taper portion 52 and the fixing knob 48 are not rotated inadvertently, it is possible to securely fix the endoscope 1 to the endoscope 1.
[0046]
In addition, since the slit 59 in which the elastic member 49 can be inserted is provided on the side surface of the fixing screw 46 in a length substantially the same as the inner diameter of the fixing portion inner space portion 57, the inner diameter of the screw portion 55. An elastic member 49 such as a spring washer having a larger outer diameter, that is, an elastic member 49 having a larger elastic force can be inserted into the inner space 57 of the fixed portion. As a result, since the pressing force between the threaded portion 55 and the engaging portion 54 of the luer taper base 12 and the luer taper portion 52 and the luer taper base 12 can be increased, the luer taper portion 52 and the fixing knob 48 are provided to the endoscope 1. The adapter 13 is securely fixed without rotating carelessly.
[0047]
Further, the operator pinches the fixing knob 48 as shown in FIG. 4, but the outer peripheral surface of the fixing knob 48 is formed in a tapered shape so that its diameter decreases toward the hand side. The operability of the fixing knob 48 for the person is improved.
[0048]
The engaging portion 56 is provided with at least one hole 61 penetrating in the axial direction. According to this, when the adapter 13 is cleaned, the cleaning liquid enters the fixed portion inner space 57 through the gap 71 between the screw portion 55 and the luer taper portion 52 and escapes from the hole 61, so that the cleaning liquid can easily pass through and can be reliably cleaned.
[0049]
Further, since the outer diameter of the seal portion 51 is smaller than the inner diameter of the outer cover 66 of the luer taper base 12, the tip of the seal portion 51 comes into contact with the corner 72 of the outer cover 66 when the adapter 13 is attached to the endoscope 1. There is no deformation. Even if the tip of the seal portion 51 is pressed against the end surface 65, the seal portion 51 is biased by the inner surface 73 of the exterior cover 66 and is not greatly deformed. Therefore, even if the adapter 13 is repeatedly attached and detached, the seal part 51 can be prevented from being cut off due to deformation.
The present invention is not limited to the above embodiment. Moreover, as a high frequency treatment tool used together with an endoscope, the following may be used.
[0050]
1. A flexible sheath, a conductive operation wire that is inserted into the conduit of the sheath and can be advanced and retracted on the proximal side, and a tissue to be incised at the distal end of the sheath attached to the distal end of the operation wire A snare wire that can be moved forward and backward to grip and pull the grip portion to the distal end of the sheath, an operation portion that is connected to the rear end of the operation wire and pushes and pulls the operation wire to operate the snare wire, and is provided in the operation portion. A high-frequency snare comprising: a high-frequency power source connecting plug; and a conductive means for energizing a high frequency from the plug to the snare wire through the operation member and the operation wire.
[0051]
2. A flexible sheath, a conductive operation wire that is inserted into the sheath so as to be able to advance and retreat, and can be advanced and retracted on the hand side, and a living body at the distal end of the sheath connected to the distal end of the operation wire. A pair of collection cups for grasping the tissue, an operation unit connected to the rear end of the sheath to push and pull the operation wire to open and close the collection cup, and a high frequency power supply connection provided in the operation unit An endoscopic high-frequency biopsy instrument comprising: a plug; and a conductive means for energizing the forceps cup with high-frequency power from the plug through a member of the operation unit and a member in the insertion unit.
[0052]
3. A flexible sheath, a conductive operation wire inserted in the sheath's conduit so as to be able to advance and retreat, a knife wire attached to the tip of the operation wire, and the operation wire connected to the rear end of the operation wire An operation unit that pushes and pulls the wire to project and retract the knife wire with respect to the sheath distal end, a high-frequency power supply plug provided in the operation unit, a member of the operation unit from the plug, and the operation wire A high-frequency knife for an endoscope comprising a conductive means for energizing the knife wire with a high frequency via a wire.
[0053]
【The invention's effect】
As described above, according to the present invention, since most of the active cord is usually incorporated in the structure of the endoscope, the active cord is not independently routed to the operative field, and the high-frequency treatment tool Does not interfere with the operability of the surgeon when using As a result, troubles such as inadvertent catching of cables on the foot are reduced, and the endoscope can be used easily.
[Brief description of the drawings]
FIG. 1 is a side view of an endoscope according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a form when the endoscope is used.
FIG. 3 is a longitudinal sectional view of a water supply / treatment instrument insertion adapter attached to a channel opening of the endoscope.
FIG. 4 is an explanatory view showing a state in which a person has picked up a fixing knob of the water supply / treatment instrument insertion adapter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Endoscope, 2 ... Insertion part, 3 ... Operation part,
5. Light guide cable (illumination light transmission cable)
6 ... light source connector, 11 ... channel opening,
12 ... base, 15 ... electric terminal for feeding (high frequency current terminal),
16 ... Power supply wire, 17 ... Power cable, 18 ... Power connector,
20 ... connection cord, 22 ... high frequency treatment instrument, 27 ... power supply connection terminal.

Claims (2)

体腔内の観察部位を挿入部の先端部から照明して観察すると共に、上記挿入部に内装され、この挿入部の先端と上記挿入部の基端に設けられた操作部においてそれぞれ開口するチャンネル内に挿通される高周波処置具によって体腔内部位を高周波電流で処置するようにした内視鏡において、
上記操作部上に高周波処置具に高周波電流を給電するための電気端子を設ける共に、一端が高周波電源装置に接続される高周波電流供給用アクティブコードを上記操作部から延出される照明光伝達用ケーブルに配設し、上記高周波電流供給用アクティブコードの他端を上記電気端子に接続したことを特徴とする内視鏡。
The observation site in the body cavity is observed by illuminating from the distal end of the insertion portion, and is embedded in the insertion portion, and is opened in each of the operation portions provided at the distal end of the insertion portion and the proximal end of the insertion portion. In an endoscope in which a body cavity part is treated with a high-frequency current by a high-frequency treatment tool inserted into
An illumination light transmission cable in which an electric terminal for supplying high-frequency current to the high-frequency treatment instrument is provided on the operation unit, and an active cord for supplying high-frequency current, one end of which is connected to a high-frequency power supply device, is extended from the operation unit And an other end of the high-frequency current supply active cord connected to the electrical terminal.
請求項1において、照明光伝達用ケーブルの延出先端部を分岐し、片方のケーブル部に光源接続用コネクターを設け、他方のケーブル部に上記高周波電流供給用アクティブコードの他端を接続した高周波電源接続用コネクターを設けたことを特徴とする内視鏡。2. The high frequency device according to claim 1, wherein the extending tip portion of the illumination light transmission cable is branched, the light source connection connector is provided on one cable portion, and the other end of the high frequency current supply active cord is connected to the other cable portion. An endoscope provided with a power supply connector.
JP2000164906A 2000-06-01 2000-06-01 Endoscope Expired - Fee Related JP4388204B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000164906A JP4388204B2 (en) 2000-06-01 2000-06-01 Endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000164906A JP4388204B2 (en) 2000-06-01 2000-06-01 Endoscope

Publications (2)

Publication Number Publication Date
JP2001340284A JP2001340284A (en) 2001-12-11
JP4388204B2 true JP4388204B2 (en) 2009-12-24

Family

ID=18668461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000164906A Expired - Fee Related JP4388204B2 (en) 2000-06-01 2000-06-01 Endoscope

Country Status (1)

Country Link
JP (1) JP4388204B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102217974B (en) * 2011-06-14 2013-01-23 深圳市安保科技有限公司 Handheld surgical instrument for vagina examination and minimally invasive treatment of cervical diseases

Also Published As

Publication number Publication date
JP2001340284A (en) 2001-12-11

Similar Documents

Publication Publication Date Title
US5047043A (en) Resecting device for living organism tissue utilizing ultrasonic vibrations
US8906014B2 (en) Medical instrument with endoscope
US7347860B2 (en) Endoscope for high-frequency treatment
EP0684015B1 (en) Electrosurgical device
US7303561B2 (en) High-frequency tool for endoscope
US9808306B2 (en) Fume evacuating electrosurgical scalpel
US11864742B2 (en) Biopsy device
US20060235450A1 (en) Living body tissue harvesting apparatus
JPH07323001A (en) Endoscope
JPH07265329A (en) Puncture high frequency treatment device
JPH114833A (en) Ligator for endoscope
US20100241118A1 (en) High frequency treatment instrument
US6134467A (en) Drainage tube introducer for endoscope
KR102447813B1 (en) Electrical connector for an electrosurgical apparatus
JPH0416649Y2 (en)
US11957400B2 (en) Resectoscope systems and methods
JP4388204B2 (en) Endoscope
JPH07178098A (en) Piercing needle device for endoscope
EP3031420B1 (en) Energizable attachment for surgical devices
WO2020071378A1 (en) Treatment instrument for endoscope, assistive instrument for endoscope, and endoscope
JP2005168927A (en) Diathermic knife
JP2000254146A (en) Endoscope treatment apparatus and high-frequency procedure implement
JP4643250B2 (en) Surgical instrument
US20230240743A1 (en) Electrosurgical forceps comprising a suction device
JP3762660B2 (en) Endoscope

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060609

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090904

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090908

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091002

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121009

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131009

Year of fee payment: 4

LAPS Cancellation because of no payment of annual fees