JP2010538796A - 電気外科器具及び方法 - Google Patents
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Abstract
Description
1.技術分野
本発明は、医療用装置及び方法に関する。より詳細には、本発明は、電気外科器具、作業端部、並びに組織を封着及び切除するための方法に関する。
種々の開腹手術及び腹腔鏡手術において、組織を凝固、封着、又は融着させることが必要である。1つの好ましい組織封着手段は、捕捉された組織に電気エネルギーを適用して、封着目的でそれらの内部に熱効果をもたらすことに依存している。種々の単極及び双極の高周波(Rf)ジョー構造が、そのような目的のために開発されてきた。広くは、捕捉された組織塊へのRfエネルギーの送達は、組織の温度を上昇させ、それによって少なくとも部分的に組織内のタンパク質を変性させる。コラーゲンを含むそのようなタンパク質は、タンパク質が復元する際に混合し互いに封着するタンパク性アマルガムに変性される。治療された領域が時間と共に治癒すると、この生物学的「結合」は体の創傷治癒プロセスによって再吸収される。
本発明の目的は、組織を切除及び圧縮することができる外科用器具の作業端部を提供することである。作業端部は、切除された、厚い筋膜を有する組織の端、又は不均一な繊維状内容物を有するその他の組織層への制御されたRfエネルギー送達を可能にする。
1.組織の封着及び切除のためのタイプ「A」システム。図1は、ハンドル端部205及びイントロデューサ又はシャフト部材206を有する電気外科器具200を示す。イントロデューサ206は、作業端部210を保持し、組織を結合及び切除するように構成されていてもよい。作業端部210は、直線又は曲線のジョー、つまり第1のジョー222a及び第2のジョー222bを有する開閉可能なジョーアセンブリを備える。ジョー222a及び222bは、軸225を中心に閉じて、組織を捕捉又は係合することができ、組織に圧縮を適用することもできる。イントロデューサ206は、円筒形又は長四角形の断面を有し、ハンドル205から延びる、薄い壁の管状スリーブを備えてもよい。ハンドル205は、ジョー閉鎖機構としても機能する、並進運動可能な往復運動部材240を作動させるように構成されているレバーアーム228を備える。往復運動部材240の遠位端は、図2A〜図2Cに見られるように、ジョー222a及び222b内の溝242内部でスライドするように構成されているフランジが付けられた「I」ビームを備える。ジョー閉鎖機構及び電気外科エネルギー送達表面は、米国特許第7,220,951号、第7,189,233号、第7,186,253号、第7,125,409号、第7,112,201号、第7,087,054号、第7,083,619号、第7,070,597号、第7,041,102号、第7,011,657号、第6,929,644号、第6,926,716号、第6,905,497号、第6,802,843号、第6,770,072号、第6,656,177号、第6,533,784号、第6,500,176号に記載され、本明細書にその全体が参照により組み込まれ、本明細書の一部をなす。図1によって示される実施形態では、以下に更に説明するように、ジョー部材222a及び222bのそれぞれは、ケーブル252の電線によって電源245及びコントローラ250に結合されて、正極性(+)及び負極性(−)を有する一対の双極電極として機能する。
として示される極性を有するものとして種々の動作モードで示されている。第1の導電体285A及び第2の導電体285Bは電線によって、Rf源240、及び以下に説明するように極性を切り替えるための切り替え手段を有するコントローラ250に結合される。いくつかの実施形態では、並進運動可能部材240は電流を帯びることができるか、又は部材240が電流送達の導電路として機能することを防ぐために絶縁層でコーティングされることができる。図3A及び図3Bは、全開位置にある第1のジョー222a及び第2のジョー222bを示し、図4は半開位置にあるジョー222a及び222bを示し、図5は、完全な閉位置にあるジョーを切欠図で示す。
を有してもよい。
(1) 選択された組織にエネルギーを送達するための方法において、
第1のジョーと第2のジョーとの間に前記組織を締め付けることであって、前記ジョーはそれぞれエネルギー送達表面を有し、前記第1のジョーと前記第2のジョーとの間の選択可能なジョー閉鎖度で互いに対して開閉するように構成されている、締め付けることと、
少なくとも第1のモード及び第2のモードで、前記ジョーのうちの少なくとも一方を介して前記組織にエネルギーを送達することと、
動作パラメータに基づき前記第1のモード、前記第2のモード、又は両方を選択することと、
を含み、
エネルギー送達の前記第1のモードは前記組織を実質的に脱水させ前記組織の断面を縮小させ、エネルギー送達の前記第2のモードは前記組織を結合させる、方法。
(2) 前記動作パラメータの変化に応じて前記第1のモードと前記第2のモードとの間で切り替えることを更に含む、実施態様1に記載の方法。
(3) 前記動作パラメータがジョー閉鎖度を含む、実施態様1に記載の方法。
(4) 前記動作パラメータがジョー閉鎖率を含む、実施態様1に記載の方法。
(5) 前記動作パラメータが前記組織のインピーダンスを含む、実施態様1に記載の方法。
(7) エネルギー送達の前記第1のモードは高周波(Rf)エネルギーの送達を含み、エネルギー送達の前記第2のモードは熱伝導を含む、実施態様1に記載の方法。
(8) 前記組織へのエネルギー送達の前記第1のモードが、前記第1のジョー及び前記第2のジョーの反対の極性表面間で双極エネルギーを送達することを含む、実施態様1に記載の方法。
(9) 前記組織へのエネルギー送達の前記第2のモードが、前記第1のジョー及び前記第2のジョーの反対の極性表面間で双極エネルギーを送達することを含み、前記双極エネルギーが前記第1のモードの極性と反対の極性を有する、実施態様8に記載の方法。
(10) 前記組織へのエネルギー送達の前記第2のモードが、前記ジョーのうちの少なくとも一方内の反対の極性表面間で双極エネルギーを送達することを含む、実施態様1に記載の方法。
エネルギー送達の前記第2のモードが、前記第1のジョー及び前記第2のジョーの第2の選択された部分における反対の極性表面間の高周波(Rf)エネルギー送達を含む、実施態様1に記載の方法。
(12) 前記第1のジョー及び前記第2のジョーの前記第1の選択された部分が、前記第1のジョー及び前記第2のジョーの周辺部分を含み、
前記第1のジョー及び前記第2のジョーの前記第2の選択された部分が、前記第1のジョー及び前記第2のジョーの、周辺ではない部分を含む、実施態様11に記載の方法。
(13) 電気外科器具において、
器具本体と、
第1のジョー及び第2のジョーを有する前記器具本体上の作業端部であって、前記ジョーはそれぞれエネルギー送達表面を有し、前記第1のジョーと前記第2のジョーとの間の選択可能なジョー閉鎖度で互いに対して開閉するように構成されている、作業端部と、
動作パラメータに基づき第1のモード、第2のモード、又は両方で前記エネルギー送達表面を起動するように構成されているコントロールシステムと、
を備え、
エネルギー送達の前記第1のモードは組織を実質的に脱水させ組織の断面を縮小させ、エネルギー送達の前記第2のモードは前記組織を結合させる、電気外科器具。
(14) 前記コントロールシステムが、前記動作パラメータの変化に応じて、前記第1のモードで前記エネルギー送達表面を起動することと、前記第2のモードで前記エネルギー送達表面を起動することとの間で切り替わる、実施態様13に記載の電気外科器具。
(15) 前記動作パラメータがジョー閉鎖度を含む、実施態様13に記載の電気外科器具。
(17) 前記動作パラメータが前記組織のインピーダンスを含む、実施態様13に記載の電気外科器具。
(18) 前記動作パラメータが時間間隔を含む、実施態様13に記載の電気外科器具。
(19) 少なくとも1つのジョーの前記エネルギー送達表面の少なくとも一部が抵抗加熱要素を備え、少なくとも1つのジョーの前記エネルギー送達表面の少なくとも一部が高周波(Rf)要素を備える、実施態様13に記載の電気外科器具。
(20) 前記抵抗加熱要素が抵抗加熱材料を含む、実施態様19に記載の電気外科器具。
(22) 前記抵抗加熱材料が前記エネルギー送達表面の少なくとも5%にわたって延びる、実施態様20に記載の電気外科器具。
(23) 前記ジョーが正の抵抗温度係数(PTCR)材料を含む、実施態様13に記載の電気外科器具。
(24) 前記ジョーが負の抵抗温度係数(NTCR)材料を含む、実施態様13に記載の電気外科器具。
(25) 前記エネルギー送達表面はそれぞれ、少なくとも1つの高周波電極を備え、前記電極は前記コントロールシステムの双極電源の反対の極に接続されるように配列されている、実施態様13に記載の電気外科器具。
(27) 前記第2のモードの前記コントロールシステムが前記第1のジョー及び前記第2のジョーの表面の前記電極を起動し、起動された前記電極は前記第1のモードの極性とは反対の極性を有する、実施態様26に記載の電気外科器具。
(28) 前記第2のモードの前記コントロールシステムが、前記第1のジョー及び前記第2のジョーの表面の前記電極、並びに少なくとも1つのジョーの表面内の前記電極のうちの少なくとも1つを起動する、実施態様25に記載の電気外科器具。
(29) 前記器具本体は、
前記ジョーを開閉するように構成されている、前記器具本体に保持されている軸線往復運動部材を備え、
前記往復運動部材の軸線運動は、電気外科表面の起動を前記第1のモードから前記第2のモードに切り替えるように構成されている、実施態様13に記載の電気外科器具。
(30) 前記第1のジョー及び前記第2のジョーはそれぞれ複数の電極を備え、前記コントロールシステムは、ジョー閉鎖割合、及び前記第1のジョーと前記第2のジョーとの間に捕捉された組織のインピーダンスのうち少なくとも一方に基づき、電極の異なるセットを起動するように構成されている、実施態様29に記載の電気外科器具。
Claims (18)
- 電気外科器具において、
器具本体と、
第1のジョー及び第2のジョーを有する前記器具本体上の作業端部であって、前記ジョーはそれぞれエネルギー送達表面を有し、前記第1のジョーと前記第2のジョーとの間の選択可能なジョー閉鎖度で互いに対して開閉するように構成されている、作業端部と、
動作パラメータに基づき第1のモード、第2のモード、又は両方で前記エネルギー送達表面を起動するように構成されているコントロールシステムと、
を備え、
エネルギー送達の前記第1のモードは組織を実質的に脱水させ組織の断面を縮小させ、エネルギー送達の前記第2のモードは前記組織を結合させる、電気外科器具。 - 前記コントロールシステムが、前記動作パラメータの変化に応じて、前記第1のモードで前記エネルギー送達表面を起動することと、前記第2のモードで前記エネルギー送達表面を起動することとの間で切り替わる、請求項1に記載の電気外科器具。
- 前記動作パラメータがジョー閉鎖度を含む、請求項1に記載の電気外科器具。
- 前記動作パラメータがジョー閉鎖率を含む、請求項1に記載の電気外科器具。
- 前記動作パラメータが前記組織のインピーダンスを含む、請求項1に記載の電気外科器具。
- 前記動作パラメータが時間間隔を含む、請求項1に記載の電気外科器具。
- 少なくとも1つのジョーの前記エネルギー送達表面の少なくとも一部が抵抗加熱要素を備え、少なくとも1つのジョーの前記エネルギー送達表面の少なくとも一部が高周波(Rf)要素を備える、請求項1に記載の電気外科器具。
- 前記抵抗加熱要素が抵抗加熱材料を含む、請求項7に記載の電気外科器具。
- 高周波(Rf)路が、上昇した組織のインピーダンスのために制限されている際、前記抵抗加熱要素が前記組織に熱を送達する、請求項8に記載の電気外科器具。
- 前記抵抗加熱材料が前記エネルギー送達表面の少なくとも5%にわたって延びる、請求項8に記載の電気外科器具。
- 前記ジョーが正の抵抗温度係数(PTCR)材料を含む、請求項1に記載の電気外科器具。
- 前記ジョーが負の抵抗温度係数(NTCR)材料を含む、請求項1に記載の電気外科器具。
- 前記エネルギー送達表面はそれぞれ、少なくとも1つの高周波電極を備え、前記電極は前記コントロールシステムの双極電源の反対の極に接続されるように配列されている、請求項1に記載の電気外科器具。
- 前記第1のモードの前記コントロールシステムが前記第1のジョー及び前記第2のジョーの表面の前記電極を起動し、起動された前記電極は極性を有する、請求項13に記載の電気外科器具。
- 前記第2のモードの前記コントロールシステムが前記第1のジョー及び前記第2のジョーの表面の前記電極を起動し、起動された前記電極は前記第1のモードの極性とは反対の極性を有する、請求項14に記載の電気外科器具。
- 前記第2のモードの前記コントロールシステムが、前記第1のジョー及び前記第2のジョーの表面の前記電極、並びに少なくとも1つのジョーの表面内の前記電極のうちの少なくとも1つを起動する、請求項13に記載の電気外科器具。
- 前記器具本体は、
前記ジョーを開閉するように構成されている、前記器具本体に保持されている軸線往復運動部材を備え、
前記往復運動部材の軸線運動は、電気外科表面の起動を前記第1のモードから前記第2のモードに切り替えるように構成されている、請求項1に記載の電気外科器具。 - 前記第1のジョー及び前記第2のジョーはそれぞれ複数の電極を備え、前記コントロールシステムは、ジョー閉鎖割合、及び前記第1のジョーと前記第2のジョーとの間に捕捉された組織のインピーダンスのうち少なくとも一方に基づき、電極の異なるセットを起動するように構成されている、請求項17に記載の電気外科器具。
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US12/050,462 US20090076506A1 (en) | 2007-09-18 | 2008-03-18 | Electrosurgical instrument and method |
US12/050,462 | 2008-03-18 | ||
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JP2022119191A (ja) * | 2021-02-03 | 2022-08-16 | オリンパスメディカルシステムズ株式会社 | 治療装置 |
Also Published As
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CN101801298B (zh) | 2012-12-05 |
US20090076506A1 (en) | 2009-03-19 |
EP2197380B1 (en) | 2014-02-12 |
AU2008302317B2 (en) | 2013-05-09 |
CA2700069A1 (en) | 2009-03-26 |
CN101801298A (zh) | 2010-08-11 |
EP2197380A4 (en) | 2012-12-19 |
JP5280452B2 (ja) | 2013-09-04 |
EP2197380A1 (en) | 2010-06-23 |
WO2009039179A1 (en) | 2009-03-26 |
AU2008302317A1 (en) | 2009-03-26 |
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