JP2005237574A - 高周波処置具 - Google Patents
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Abstract
【解決手段】 バイポーラ鉗子10は、体内に挿入可能な細長い挿入部12と、挿入部12の先端部に設けられた処置部14と、挿入部12の基端部に設けられた操作部16とを備えている。処置部14は、生体組織を把持する開閉可能な1対のジョー32a,32bを備えている。ジョー32a,32bは、操作部16の操作によって開閉される。ジョー32a,32bの把持面38a,38b間には、隙間γを有する。ジョー32a,32bは、電極機能を備えている。
【選択図】 図3
Description
図1に示すように、この実施の形態に係る切開凝固用バイポーラ鉗子(高周波処置具)10は、例えば内視鏡100の処置具挿通チャンネル102に挿入された状態で内視鏡100に組み合わせて使用される。
まず、バイポーラ鉗子10の第1および第2の通電コネクタ64a,64bに図示しないケーブルの一端をそれぞれ接続する。ケーブルの他端は、高周波焼灼電源装置(図示せず)に接続される。このため、バイポーラ鉗子10と高周波焼灼電源装置とは、電気的に接続される。
図4に示す操作部16を操作して操作・導電ワイヤ18を挿入部12のシース22に対して進退させる。すると、操作・導電ワイヤ18の先端部の第1および第2のワイヤ18a,18bを介して連結部32c,32dに第1および第2のワイヤ18a,18bの進退動作が伝達される。このため、ピン40を支点としてジョー32a,32bが接離する。すなわち、ジョー32a,32bが開閉される。
図10(A)および図10(B)に示す把持部32のジョー32a,32bは例えばセラミックス材など、電気的絶縁性を有するとともに耐熱性に優れる材料で形成されている。すなわち、この実施の形態では、ジョー32a,32b自体には通電されない。
図14(A)は、この実施の形態に係るバイポーラ鉗子10の把持部32のジョー32a,32bを先端側から見た図である。図14(A)に示すように、ジョー32a,32bは、それぞれ絶縁体70cを間に挟んだ状態で導電体からなる第1および第2の電極体70a,70bを備えている。すなわち、第1および第2の電極体70a,70bにより絶縁体70cが挟持されている。
図15(A)に示すように、1対のジョー32a,32bの側面を生体組織110の出血部に押し当てた場合、一方のジョー32aの第2の電極体70bと、他方のジョー32bの第1の電極体70aとの間の組織110に通電される。このため、1対のジョー32a,32b間の組織110が凝固されて出血部が止血される。このような作用は、1対のジョー32a,32bで組織110を把持して処置する場合も同様である。
例えばジョー32a,32bの他方のジョー32bを生体組織110に押し付けてその生体組織110を止血する場合、管状体36aの第1の電極体72aも生体組織110に押し付ける。この状態で第1および第2の電極体72a,72bに通電すると、図17中の矢印で示すように第1の電極体72aから第2の電極体72bに電流が流れる。このため、生体組織110の出血部に通電されてその組織110が凝固されて止血される。
1対のジョー32a,32bで組織110を把持してその把持した組織110の出血部を止血する場合について説明する。
1対のジョー32a,32bで組織110を把持してその把持した組織110からの出血を止血する場合について説明する。
まず、高周波処置具200のバイポーラ鉗子10で組織110を把持して止血する作用について説明する。
通電コードによってモノポーラ止血具210とバイポーラ鉗子10との通電コネクタ64a,64b,264をそれぞれ高周波電源に電気的に接続する。
バイポーラ鉗子10の把持部32で組織110を把持して止血を行なう場合と同様に、高周波処置具200の先端を組織110の出血部に近づける。そして、バイポーラ鉗子10の処置部14をモノポーラ止血具210の挿入部212の内部に収める。図24(A)に示すモノポーラ止血具210の先端部の電極228を組織110の出血部に当てて通電する。すると、組織110の出血部が凝固されて止血される。
まず、高周波処置具200のバイポーラ鉗子10で組織110を把持して止血する作用について説明する。
通電コードを介してモノポーラ止血具210とバイポーラ鉗子10とを高周波焼灼電源にそれぞれ電気的に接続する。
バイポーラ鉗子10の把持部32で組織110を把持して止血を行なう場合と同様に、高周波処置具200の先端を組織110の出血部に近づける。そして、バイポーラ鉗子10の処置部14の把持部32を開く。すなわち、1対のジョー32a,32bを開く。この状態で、図25に示すように、モノポーラ止血具210の処置部214をバイポーラ鉗子10の挿入部12の先端部から突出させる。
(付記項1) 体内に挿入可能な挿入部と、挿入部の先端に配置され且つ生体組織を把持して凝固または切開するための一対の把持部と、挿入部の基端部に連結され、且つ把持部を開閉操作するための操作部を備え、前記各把持部に高周波電極が配設されたバイポーラ鉗子において、
前記把持部が完全に閉じられた状態においても各把持部の把持面同士が一切触れず、所定の隙間を設けるための構造をしていることを特徴とするバイポーラ鉗子。
挿入部の基端部に連結され、且つ把持部を開閉操作するための操作部を備えたバイポーラ鉗子において、
前記把持部は電気絶縁体からなり、
前記把持部の少なくとも一方に少なくとも一対の第1電極と第2電極とを配設し、
前記第1、第2電極は、それぞれ前記一対の把持部周囲の全ての面上に表在していることを特徴とするバイポーラ鉗子。
体内に挿入可能な挿入部と挿入部の先端に配置され且つ生体に接触させて凝固または切開するための電極が配置されたバイポーラもしくはモノポーラの凝固子において、
前記高周波把持具と前記電極のどちらか一方が、もう一方の挿入部に収納されていることを特徴とする高周波処置具。
前記高周波把持具の把持部材を開くことにより前記電極が現れることを特徴とする。
挿入部の中には前記高周波把持具が摺動可能に配置されており、
前記高周波把持具を摺動させることにより、前記電極先端から前記高周波把持具が突没することを特徴とする。
前記先端にはスリットが設けられている。
前記高周波把持具を摺動させることにより、前記電極先端のスリットが開き、前記電極の内部から前記高周波把持具が露出することを特徴とする。
Claims (9)
- 体内に挿入可能な細長い挿入部と、
前記挿入部の先端部に設けられ、少なくとも一方の外表面が絶縁性を有する連結部で枢支された開閉可能な1対のジョーを有する把持部と、
前記ジョー同士を閉じた状態で前記ジョー同士の接触を防止する接触防止手段と、
前記挿入部の基端部に連結され、前記ジョーを開閉操作する操作部と、
前記ジョーにそれぞれ配設された電極と、
前記挿入部の基端部および操作部の少なくとも一方に設けられ、前記電極にそれぞれ電力を供給するために電源装置に接続される少なくとも1対の電気コネクタと
を具備することを特徴とする高周波処置具。 - 前記接触防止手段は、前記ジョーの開閉範囲を規制する規制部材を備えていることを特徴とする請求項1に記載の高周波処置具。
- 前記規制部材は、前記連結部の回動範囲を規制するピンを備えていることを特徴とする請求項2に記載の高周波処置具。
- 前記ジョーと前記電極とは、一体であることを特徴とする請求項1ないし請求項3のいずれか1つに記載の高周波処置具。
- 体内に挿入可能な細長い挿入部と、
電気絶縁性を備えた状態で前記挿入部の先端部に配置され、生体組織を把持する開閉可能な1対のジョーを有する把持部と、
前記挿入部の基端部に連結され、前記ジョーを開閉操作する操作部と、
前記ジョーの少なくとも一方に全面的に表在された少なくとも1対の電極と、
前記挿入部の基端部および操作部の少なくとも一方に設けられ、前記電極にそれぞれ電力を供給するために電源装置に接続される少なくとも1対の電気コネクタと
を具備することを特徴とする高周波処置具。 - 前記電極は、絶縁体と、この絶縁体を挟んだ1対の電極体とを備えていることを特徴とする請求項5に記載の高周波処置具。
- 前記電極は、U字状の第1の電極体と、前記第1の電極体の内周に配設されたU字状の絶縁体と、前記絶縁体の内周に配設された第2の電極体とを備えていることを特徴とする請求項5もしくは請求項6に記載の高周波処置具。
- 前記電極は、少なくとも一方のジョーに螺旋状に配設されていることを特徴とする請求項5に記載の高周波処置具。
- 体内に挿入可能な細長い第1の挿入部と、
前記第1の挿入部の先端部に配置され、生体組織を把持する開閉可能な1対のジョーを有する把持部と、
前記第1の挿入部の基端部に連結され、前記ジョーを開閉操作する操作部と
前記ジョーの少なくとも一方に配設され、生体組織が前記把持部に接触した状態で通電させると生体組織を凝固または切開可能な高周波電極と
を有するバイポーラおよびモノポーラ型の少なくとも一方の高周波把持鉗子と、
体内に挿入可能な第2の挿入部と、前記第2の挿入部の先端部に配置され、生体組織に接触させた状態で通電させると接触された生体組織を凝固または切開可能な電極とを有するバイポーラおよびモノポーラ型の少なくとも一方の凝固子と
を具備し、前記高周波把持鉗子と前記凝固子との前記第1および第2の挿入部の一方の先端部が他方の先端に対して突没自在に収納されていることを特徴とする高周波処置具。
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JP2004050212A JP4436698B2 (ja) | 2004-02-25 | 2004-02-25 | 高周波処置具 |
EP05004146.6A EP1568330B1 (en) | 2004-02-25 | 2005-02-25 | High frequency treatment device having a pair of jaws with electrodes |
US11/066,646 US7621910B2 (en) | 2004-02-25 | 2005-02-25 | High frequency treatment device having a pair of jaws with electrodes |
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Cited By (11)
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JP2007296346A (ja) * | 2006-04-28 | 2007-11-15 | Ethicon Endo Surgery Inc | 内視鏡的粘膜切除術中に切断要素を展開するための装置および方法 |
JP2009095619A (ja) * | 2007-10-12 | 2009-05-07 | River Seiko:Kk | 内視鏡用鋏型高周波処置具 |
WO2010150618A1 (ja) | 2009-06-26 | 2010-12-29 | オリンパスメディカルシステムズ株式会社 | 外科手術器具 |
US20120136370A1 (en) * | 2010-11-30 | 2012-05-31 | Olympus Corporation | Medical manipulator |
WO2012124635A1 (ja) * | 2011-03-11 | 2012-09-20 | オリンパス株式会社 | 医療用処置具およびマニピュレータ |
JP2013518681A (ja) * | 2010-02-04 | 2013-05-23 | アエスクラップ アーゲー | 腹腔鏡高周波手術装置 |
JP2014008406A (ja) * | 2012-06-29 | 2014-01-20 | Covidien Lp | 外科用鉗子 |
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KR20160015989A (ko) * | 2014-08-01 | 2016-02-15 | 인제대학교 산학협력단 | 조직 채취용 기구 |
WO2020116163A1 (ja) * | 2018-12-07 | 2020-06-11 | ジョンソン・エンド・ジョンソン株式会社 | 内視鏡用把持鉗子、内視鏡用把持鉗子の製造方法、処置具 |
US11896291B2 (en) | 2018-07-02 | 2024-02-13 | Covidien Lp | Electrically-insulative shafts, methods of manufacturing electrically-insulative shafts, and energy-based surgical instruments incorporating electrically-insulative shafts |
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US7621910B2 (en) | 2009-11-24 |
US20050187547A1 (en) | 2005-08-25 |
EP1568330A1 (en) | 2005-08-31 |
JP4436698B2 (ja) | 2010-03-24 |
EP1568330B1 (en) | 2016-11-30 |
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