JPH10199A - ２極式切断及び凝固器具 - Google Patents

２極式切断及び凝固器具

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Publication number
JPH10199A
JPH10199A JP9074628A JP7462897A JPH10199A JP H10199 A JPH10199 A JP H10199A JP 9074628 A JP9074628 A JP 9074628A JP 7462897 A JP7462897 A JP 7462897A JP H10199 A JPH10199 A JP H10199A
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Prior art keywords
electrode
end effector
electrodes
axis
tissue
Prior art date
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English (en)
Inventor
Charles E Austin
チヤールズ・イー・オーステイン
Kennth R Dafforn
ケネス・アール・ダフオーン
Jay J Mcelhenney
ジエイ・ジエイ・マクエルヘニー
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Ethicon Endo Surgery Inc
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Ethicon Endo Surgery Inc
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Publication date
Application filed by Ethicon Endo Surgery Inc filed Critical Ethicon Endo Surgery Inc
Publication of JPH10199A publication Critical patent/JPH10199A/ja
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
    • A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00404—Blood vessels other than those in or around the heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00601—Cutting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00607—Coagulation and cutting with the same instrument
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B2018/1246—Generators therefor characterised by the output polarity
    • A61B2018/126—Generators therefor characterised by the output polarity bipolar
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B2018/146—Scissors

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

(57)【要約】 【課題】 身体に攻撃的でない２極式電気外科器具を提
供する。 【解決手段】 第１の電極は開口位置と閉鎖位置との間
を旋回するようにされる。第１の電極は、その長手方向
軸線まわりにも旋回し、かつ凝固用の面と切断用のエッ
ジとを持つ。第２及び第３の電極は、第１の電極が閉鎖
位置にあるときに第１の電極と実質的に平行に配列され
る。細長い中空管は、第１及び第２の握り部材の相互運
動が第１の電極を第２及び第３の電極に関して動かすよ
うにハンドルをエンドエフェクターに連結している機構
を備える。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、一般に組織の把持、操
作、切断のための２極式の電気外科器具に関し、特に回
転可能な電極を有するエンドエフェクター（ｅｎｄ ｅ
ｆｆｅｃｔｏｒ）を備えた２極式電気外科器具に関す
る。
【０００２】
【従来技術及びその課題】２極式電気外科器具は、２極
式剪刀、２極式鉗子、及び２極式切断鉗子を含む。２極
式剪刀は一般に組織の切断に使用され、そして一般に組
織の把持又は操作には使用されない。ブレードの間に組
織がある２極式剪刀においては、切断点に至る端末はブ
レードが閉じられると焼灼される。２極式鉗子は一般に
組織の把持、操作、及び焼灼に使われる。しかし、２極
式鉗子は組織の切断には一般に有用でない。２極式鉗子
は、一般の組織の把持、操作、切断、及び凝固に使用さ
れる。大多数の２極式鉗子においては、組織を掴みかつ
電極として作用する２個の向かい合ったジョーの間にナ
イフ又は切断用要素が配置される。通常の２極式鉗子に
おいては、術者はナイフ又はその他の切断用要素で組織
を切断する前にジョー間の組織を焼灼する。そこで、か
かる２極式鉗子では、焼灼域は、２極式剪刀を使用して
焼灼した区域より一般に大きい。
【０００３】このため、焼灼域を２極式剪刀のように限
定すること又は２極式鉗子におけるように拡大されるよ
うな２極式電気外科器具を設計することが有利である。
更に、組織の焼灼の前、途中、又は後でエンドエフェク
ターが組織を切断するように作られた器具を設計するこ
とが有利である。更に、組織を把持しかつ操作するため
に使用し得るような器具を設計することが有利である。
最後に、内視鏡術及びその他の最小攻撃的な外科処置に
使用し得るような器具を設計することが有利である。
【０００４】
【課題を解決するための手段】本発明の１実施例によれ
ば、２極式電気外科器具は、ハンドル、エンドエフェク
ター、及び細長い中空管を備える。ハンドルは、第１及
び第２の握り部材を持つ。エンドエフェクターは、第
１、第２及び第３の電極を備える。第１の電極は、形状
が実質的に三角形であり、かつエンドエフェクターの根
元側端部において旋回ピンまわりに第２及び第３の電極
に関して旋回するようにされる。第１の電極は開口位置
と閉鎖位置との間を旋回する。第１の電極は、その長手
方向軸線まわりにも旋回する。第１の電極は少なくも１
個の凝固用の面と少なくも１個の切断用のエッジとを持
つ。第２及び第３の電極は、第１の電極が閉鎖位置にあ
るときに第１の電極と実質的に平行に配列される。細長
い中空管は、第１及び第２の握り部材の相互の動きが第
１の電極を第２及び第３の電極に関して動かすようにハ
ンドルをエンドエフェクターに連結している機構を備え
る。
【０００５】更に、本発明により、三角形の第１の電極
の１辺を凝固用の面とし、かつ三角形電極の残りの２辺
の交線に切断用のエッジを形成することができる。凝固
用の面は中高とすることができ、かつ組織を把持するた
めの刻み目又はセレーションを設けることができる。切
断用のエッジを形成するように出会う三角形電極の２辺
は形状を中低にし、かつ組織の切断後にこれを凝固させ
るための追加の凝固用の面を形成することができる。
【０００６】第２及び第３の電極は第１の電極から電気
絶縁され、更に互いに電気絶縁され、或いは、例えばエ
ンドエフェクターの根元側端部において電気的に接続す
ることができる。第２及び第３の電極は、これらを互い
に物理的に分離し、又は中央域において連結することが
できる。第２及び第３の電極は、エンドエフェクターが
閉鎖位置にあるときに、第１の電極の切断用エッジが第
１及び第２の電極間に適合するように配置することがで
きる。第２及び第３の電極は組織を把持するために刻み
目又はセレーションを設けることができる。
【０００７】第２及び第３の電極間の中央域は電気絶縁
材料又は導電材料を備えることができる。中央域は第１
の電極の切断用エッジを受けるようにされた溝を備える
ことができる。
【０００８】
【実施例】本発明の新規な特徴は実施態様において特に
説明される。しかし、本発明自体は、構成及び作動方法
の双方、並びに本発明の更なる目的及び利点と共に、付
属図面に関連して行われる以下の説明を参照して最もよ
く理解されるであろう。
【０００９】図１は本発明により２極式電気外科器具１
０を示す。図１において、２極式電気外科器具１０は、
ハンドル１２、エンドエフェクター１４、及び細長い中
空管１６を備える。ハンドル１２は、第１の握り部材１
８と第２の握り部材２０とを備える。電気外科用のエネ
ルギーは電線２２を経て器具１０に供給される。電線２
２は第１の線２４、第２の線２６、及び２極プラグ２８
を有し、このプラグは通常の電気外科用発電機（図示せ
ず）に接続することができる。電線２２は電気コネクタ
ー３０に接続され、このコネクターは電線又は同等品を
経て中空管１６を通ってエンドエフェクター１４内の電
極に接続される。エンドエフェクター１４は第１のジョ
ー部材３２と第２のジョー部材３４とを備える。握り部
材１８の方向Ａの運動が、例えばジョー３２をジョー３
４に向かって方向Ｂで動かすことによりエンドエフェク
ター１４を閉じる。
【００１０】図２は、本発明による２極式電気外科器具
１０用のエンドエフェクター１４を示す。ジョー３２
は、例えば三角形の電極となし得る電極３６を備える。
ジョー３４は、図２に示されるような分離型又は図１０
に示されるような連結型となし得る電極３８及び４０を
備える。電極３６は、凝固用の面４６と切断用のエッジ
４８とを備える。図２に示される本発明の実施例におい
ては、電極３６は、端部から見たときの形状は実質的に
三角形である。細長い中空管１６は、第２の握り部材２
０に関する第１の握り部材１８の運動がジョー３２をジ
ョー３４に関して動かすようにハンドル１２をジョー３
２に連結している機構を備える。電極３６は、その前後
方向軸線まわりに旋回し、更に図２に示された開口位置
と図３に示された閉鎖位置との間を旋回ピン４４まわり
に旋回するように作られる。
【００１１】電極３２は電線５６又はその他の適切な導
電体により電気コネクター３０に接続される。電極３８
及び４０は電線５８又はその他の適切な導電体により電
気コネクター３０に接続される。２極プラグ２８からの
エネルギーは電線５６及び５８を経てエンドエフェクタ
ー１４に加えられる。２極プラグ２８へのエネルギーの
供給、従ってエンドエフェクター１４へのエネルギーの
供給は、これを、例えば足踏みスイッチ（図示せず）又
はその他の同様な器具を使用して制御することができ
る。
【００１２】エンドエフェクター１４は、連結用ロッド
５０の運動により開閉させることができる。連結用ロッ
ド５０はその手前側の端部において握り部材１８に、ま
たその末端においてレバー５２に連結される。連結用ロ
ッド５０の運動がレバー５２を絶縁旋回ピン４４まわり
に旋回させる。レバー５２はレバー５２から管１６への
短絡を防ぐために絶縁される。或いは、電気短絡を防止
するために、中空管１６を絶縁材料で作ることができ
る。
【００１３】図３は、エンドエフェクター１４のジョー
３２と３４とが閉鎖位置にありかつ電極３６が組織凝固
用とされた場合の本発明による２極式電気外科器具１０
用のエンドエフェクターを示す。電極３８と４０とは、
電極３６が図３に示された閉鎖位置にあるときは、電極
３６の前後方向軸線と実質的に平行である。電極３６が
Ｂに沿って閉じられると、組織５８がジョー３２とジョ
ー３４との間に掴まれる。ジョー３２とジョー３４との
間に掴まれた組織５８は、これを、例えばジョー３２と
ジョー３４との間に電気エネルギーを印加することによ
り処理することができる。
【００１４】図４は、エンドエフェクター１４が閉鎖位
置にありかつ電極３６が組織切断用とされた場合の本発
明による２極式電気外科器具１０用のエンドエフェクタ
ー１４を示す。図４の実施例においては、電極３６は旋
回ピン６０の手段によりコネクター５２に取り付けられ
る。電極３６は止めネジ６２により定位置に保持され
る。図４に示されるように、電極３６の凝固用の面４６
は、組織の握り又は把持を支援するために刻み目又はセ
レーション４７を持つことができる。電極３８及び４０
にも、組織の握り又は把持を支援するためにセレーショ
ン４７を付けることができる。
【００１５】図５は、本発明による２極式電気外科器具
用のエンドエフェクターのための回転可能な取付け機構
を示す。図６は、図５に示されたエンドエフェクターの
６−６に沿って見た断面図である。図６において、止め
ねじ６２が溝６４内に入り、電極３６が旋回ピン６０ま
わりに３６０゜旋回することを許す。
【００１６】図７は、エンドエフェクター１４が閉鎖位
置にありかつ電極３６が組織５８を凝固させるようにさ
れた場合の本発明による２極式電気外科器具１０用のエ
ンドエフェクター１４の端面図である。図７において、
電極３６の凝固用の面４６は組織５８を電極３８及び４
０に押し付けて定位置に保持する。組織５８は導電体と
して作用するので、エンドエフェクター１４への電気外
科的エネルギーの印加により、電流６６が電極３６から
電極３８及び４０に流れるであろう。この電流は組織５
８を加熱するように作用し、組織５８の焼灼及び／又は
乾燥を生ずるであろう。従って、図７に示された配列に
おいては、エンドエフェクター１４を組織の焼灼に使用
することができる。図４に示された配列においては、エ
ンドエフェクター１４は、電気外科的エネルギーを与え
ることなしに組織を把持し操作するために使用すること
もできる。図７の実施例では、凝固用の面４６は、凝固
用の面４６と電極３８、４０との間の組織の量を大きく
させるように凹面であり、凝固される組織量を増加させ
かつ器具の把持特性を強化している。
【００１７】図８はエンドエフェクター１４の電極３６
が組織切断用とされた場合の本発明による２極式電気外
科器具１０用のエンドエフェクター１４の端面図であ
る。図８において、電気外科的エネルギーは電極３６に
印加され、電極３６が導電性の組織５８と接触したとき
に電流６６が電極３６から電極３８及び４０に流れるで
あろう。電極３８及び４０は電極３６からの電流の戻り
の経路を提供する。従って、電極３８と４０との間の区
域内の組織５８は、エンドエフェクターが閉じられると
焼灼され、そして電極３６の切断用エッジ４８により切
断される。
【００１８】図９は、エンドエフェクター１４の電極３
６が組織５８を切ったときの本発明による２極式電気外
科器具用のエンドエフェクター１４を示す。図９に示さ
れるように、電極３６からの電流６６は、電気外科的エ
ネルギーが印加されかつ組織が電極３６と電極３８か４
０のいずれかとの間に置かれる限り組織５８を通って流
れ続ける。従って、組織５８が切断された後でも、この
切断点に直近の区域内の組織は焼灼される。更に、エン
ドエフェクター１４が閉じられると、エンドエフェクタ
ー１４により把持された組織はジョー３２と３４との間
で圧迫され、把持された組織の凝固が増進されるであろ
う。図９の実施例においては、凝固用の面６８は凹面で
あり、電極３６と電極３８、４０との間に組織を位置決
めし掴むことを容易にする。凝固用の凹面６８は、この
配列が組織の電極との接触面積を大きくするという利点
も持っている。更に、電極３６の凹の側面６８は隙間を
与えて、切断用エッジ４８が電極３８と４０とをうまく
通り越して入り込むことを許し、切断を容易にする。
【００１９】本発明においては、電極３８及び４０は電
極３６から電気的に絶縁され、そして更に互いに電気絶
縁されされ、又は、例えばエンドエフェクターに近い方
の端部において電気的に接続される。更に、電極３８及
び４０は、互いに物理的に隔離され、又は図１０に示さ
れるように中央域において連結することができる。図１
０の中央域７２は、非導電性の支持材料、導電性材料の
絶縁域、或いは導電性材料の非絶縁域とすることができ
る。中央域７２は、更に電極３６の切断用エッジ４８を
受けるようにされた溝７４を有することができる。
【００２０】本発明の好ましい実施例がここに図示され
説明されたが、かかる実施例は例示としてのみ提供され
たことが熟練技術者には明らかであろう。これら技術者
により、本発明より離れることなく、多くの変化、変更
及び置換が可能であろう。従って本発明は請求項の精神
及び範囲によってのみ限定されることが意図される。本
発明の実施態様は次のとおりである。
【００２１】１．電気外科器具用のエンドエフェクター
において、第１の機能を行うための第１の位置と第２の
機能を行うための第２の位置との間を第１の軸線まわり
に回転できる第１の電極であって、更に前記第１の軸線
と実質的に直角な第２の軸線まわりに回転できる前記第
１の電極、前記第１の電極から電気絶縁された第２及び
第３の電極であって、前記第２の軸線と実質的に直角に
配列されている前記第２及び第３の電極を備え、前記第
１の電極が閉鎖位置にあるときに前記第２及び第３の電
極が前記第１の軸線と実質的に平行であるように前記第
１の電極が開口位置から閉鎖位置に動き得るエンドエフ
ェクター。
【００２２】２．前記第１の電極が、実質的な平らな第
１の処理面と実質的に尖った第２の処理面とを有する実
施態様１によるエンドエフェクター。
【００２３】３．前記第１の電極は形状が実質的に三角
形である実施態様２によるエンドエフェクター。
【００２４】４．前記第１の処理面が実質的に中高であ
る実施態様３によるエンドエフェクター。
【００２５】５．前記第１の処理面が前記三角形の第１
の辺を形成し、そして前記第２の処理面が前記三角形の
第２の辺と第３の辺との界面において前記第１の面とは
反対側に位置決めされる実施態様３によるエンドエフェ
クター。
【００２６】６．前記第２の辺及び前記第３の辺の形状
が中低である実施態様５によるエンドエフェクター。
【００２７】７．前記第１の電極は、前記第１の電極が
前記第１の位置にあるときに前記第２の電極と前記第３
の電極との上に置かれた組織を切断するようにされた実
施態様６によるエンドエフェクター。
【００２８】８．前記第１の電極は、前記第１の電極が
前記第２の位置にあるときに前記第２の電極と前記第３
の電極との上に置かれた組織を焼灼するようにされた実
施態様６によるエンドエフェクター。
【００２９】９．前記第１の電極が前記エンドエフェク
ターに近い方の端部において前記第１の軸線まわりに旋
回する実施態様１によるエンドエフェクター。
【００３０】１０．前記第２の電極と前記第３の電極と
が、絶縁された中央域により互いに連結される実施態様
１によるエンドエフェクター。
【００３１】１１．電気外科器具用のエンドエフェクタ
ーにおいて、前記エンドエフェクターを通って実質的に
近い方から遠い方に伸びている第１の軸線、電気絶縁さ
れた第１のジョーと第２のジョーを備え、前記第１のジ
ョーは第１の処理位置から第２の処理位置に第２の軸線
まわりに回転でき、前記第２の軸線は前記エンドエフェ
クターが閉鎖位置にあるときに前記第１の軸線と実質的
に平行である前記エンドエフェクター。
【００３２】１２．第１及び第２の握り部材を有するハ
ンドル、エンドエフェクターであって第１の軸線まわり
に開口位置と閉鎖位置との間を旋回できる第１の三角形
の電極であって、前記第１の軸線と実質的に直角の第２
の軸線まわりに旋回できる前記第１の電極、前記第１の
電極の第１の側の凝固用の面、前記第１の電極の第２の
側の切断用のエッジ、前記第１の軸線と実質的に直角に
配列された第２及び第３の電極であって、前記エンドエ
フェクターが前記閉鎖位置にあるときは前記第２の軸線
と実質的に平行である前記第２及び第３の電極を有する
エンドエフェクター、前記第１の握り部材を前記第１の
電極に連結している機構を有する細長い中空管を備えた
２極式電気外科器具。
【００３３】１３．前記第２及び第３の電極が絶縁域に
より連結され、前記エンドエフェクターが前記閉鎖位置
にあるときは、前記切断用エッジが前記第１、第２の電
極の間に適合しかつ前記絶縁域と接触する実施態様１２
による電気額器具。
【図面の簡単な説明】
【図１】本発明による２極式電気外科器具の斜視図であ
る。
【図２】本発明による２極式電気外科器具用のエンドエ
フェクターの斜視図である。
【図３】エンドエフェクターが閉鎖位置にあり三角形の
電極が組織を凝固させるようにされた場合の本発明によ
る２極式電気外科器具用のエンドエフェクターの斜視図
である。
【図４】エンドエフェクターが閉鎖位置にあり三角形の
電極が組織を切断するようにされた場合の本発明による
２極式電気外科器具用のエンドエフェクターの斜視図で
ある。
【図５】本発明による２極式電気外科器具用のエンドエ
フェクターの回転式取付け機構の平面図である。
【図６】図５に示されたエンドエフェクターの線６−６
に沿った断面図である。
【図７】エンドエフェクターが閉鎖位置にあり三角形の
電極が組織を凝固させるようにされた場合の本発明によ
る２極式電気外科器具用のエンドエフェクターの端面図
である。
【図８】エンドエフェクターが部分的に閉鎖された位置
にありかつ三角形の電極が組織を切断するようにされた
場合の本発明による２極式電気外科器具用のエンドエフ
ェクターの端面図である。
【図９】エンドエフェクターが閉鎖位置にありかつ三角
形の電極が組織を切断するようにされた場合の本発明に
よる２極式電気外科器具用のエンドエフェクターを示
す。
【図１０】中央支持域が２個の電極間にある場合の本発
明による２極式電気外科器具用のエンドエフェクターを
示す。
【符号の説明】
１０ 外科用器具 １２ ハンドル １４ エンドフエクター １８ 握り部材 ３２ ジヨー ３４ ジヨー ３６ 電極 ３８ 電極 ４０ 電極 ４４ 旋回ピン
───────────────────────────────────────────────────── フロントページの続き (72)発明者 ジエイ・ジエイ・マクエルヘニー アメリカ合衆国ロードアイランド州02806 バーリントン・ノースレイン３

Claims (3)

    【特許請求の範囲】
  1. 【請求項１】 電気外科器具用のエンドエフェクターに
    おいて、 第１の機能を行うための第１の位置と第２の機能を行う
    ための第２の位置との間を第１の軸線まわりに回転でき
    る第１の電極であって、更に前記第１の軸線と実質的に
    直角な第２の軸線まわりに回転できる前記第１の電極、 前記第１の電極から電気絶縁された第２及び第３の電極
    であって、前記第２の軸線と実質的に直角に配列されて
    いる前記第２及び第３の電極を備え、 前記第１の電極が閉鎖位置にあるときに前記第２及び第
    ３の電極が前記第１の軸線と実質的に平行であるように
    前記第１の電極が開口位置から閉鎖位置に動き得るエン
    ドエフェクター。
  2. 【請求項２】 電気外科器具用のエンドエフェクターに
    おいて、 前記エンドエフェクターを通って実質的に近い方から遠
    い方に伸びている第１の軸線、 電気絶縁された第１のジョーと第２のジョーを備え、 前記第１のジョーは第１の処理位置から第２の処理位置
    に第２の軸線まわりに回転でき、前記第２の軸線は前記
    エンドエフェクターが閉鎖位置にあるときに前記第１の
    軸線と実質的に平行である前記エンドエフェクター。
  3. 【請求項３】 第１及び第２の握り部材を有するハンド
    ル、 エンドエフェクターであって第１の軸線まわりに開口位
    置と閉鎖位置との間を旋回できる第１の三角形の電極で
    あって、前記第１の軸線と実質的に直角の第２の軸線ま
    わりに旋回できる前記第１の電極、 前記第１の電極の第１の側の凝固用の面、 前記第１の電極の第２の側の切断用のエッジ、 前記第１の軸線と実質的に直角に配列された第２及び第
    ３の電極であって、前記エンドエフェクターが前記閉鎖
    位置にあるときは前記第２の軸線と実質的に平行である
    前記第２及び第３の電極を有するエンドエフェクター、 前記第１の握り部材を前記第１の電極に連結している機
    構を有する細長い中空管を備えた２極式電気外科器具。
JP9074628A 1996-03-12 1997-03-12 ２極式切断及び凝固器具 Pending JPH10199A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/614,117 US5702390A (en) 1996-03-12 1996-03-12 Bioplar cutting and coagulation instrument
US08/614117 1996-03-12

Publications (1)

Publication Number Publication Date
JPH10199A true JPH10199A (ja) 1998-01-06

Family

ID=24459924

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Application Number Title Priority Date Filing Date
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Country Status (7)

Country Link
US (2) US5702390A (ja)
EP (1) EP0795301B1 (ja)
JP (1) JPH10199A (ja)
AU (1) AU707821B2 (ja)
CA (1) CA2199563C (ja)
DE (1) DE69718537T2 (ja)
ES (1) ES2190508T3 (ja)

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US5944718A (en) 1999-08-31
EP0795301A1 (en) 1997-09-17
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AU1626697A (en) 1997-09-18
DE69718537T2 (de) 2003-11-20
US5702390A (en) 1997-12-30
EP0795301B1 (en) 2003-01-22
ES2190508T3 (es) 2003-08-01
CA2199563A1 (en) 1997-09-12
AU707821B2 (en) 1999-07-22
CA2199563C (en) 2006-01-24

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