JPH11502144A - 電気外科的心筋層血管再生のためのシステム及び方法 - Google Patents
電気外科的心筋層血管再生のためのシステム及び方法Info
- Publication number
- JPH11502144A JPH11502144A JP9519878A JP51987897A JPH11502144A JP H11502144 A JPH11502144 A JP H11502144A JP 9519878 A JP9519878 A JP 9519878A JP 51987897 A JP51987897 A JP 51987897A JP H11502144 A JPH11502144 A JP H11502144A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- heart
- channel
- shaft
- tissue
- 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.)
- Granted
Links
Classifications
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Landscapes
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Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.活性電極面を患者の心臓の壁の目標部位の極めて近傍に配置することと、 心臓壁の組織を切除して心臓壁の少なくとも一部分を通る血管再生用チャネル を形成するために、前記活性電極面とリターン電極との間に高周波数電圧を印加 することとからなる患者の心筋層の一部分を血管再生する方法。 2.血管再生用チャネルを形成するために、心臓壁の一部分を通して前記活性 電極面を軸線方向に移動することをさらに含む、請求項1に記載の方法。 3.電気外科カテーテルの少なくとも先端部を心臓の心室に導入することと、 前記電気外科カテーテルの先端部を心筋層の極めて近傍に配置することとをさ らに含む、請求項1に記載の方法。 4.電気外科プローブの少なくとも先端部を患者の胸の空腔にある開口を通し て導入することと、 前記電気外科プローブの先端部を心筋層の極めて近傍に配置することとをさら に含む、請求項1に記載の方法。 5.前記電気外科プローブが患者の肋間穿通によって導入される、請求項4に 記載の方法。 6.前記電圧が前記活性電極と前記リターン電極との間に連続的に印加される 、請求項1に記載の方法。 7.前記電圧が患者の心臓の鼓動に対応してパルスで印加される、請求項1に 記載の方法。 8.前記活性電極が複数の隔離されている電極端子を含む電極配列からなる、 請求項1に記載の方法。 9.前記活性電極が電気外科プローブの先端部から突き出ている一つの電極か らなる、請求項1に記載の方法。 10.前記電極端子と前記リターン電極との間のインピーダンスに基づいて、 前記電極端子の少なくとも二つからの電流を独立して制御することをさらに含む 、請求項8に記載の方法。 11.約1.5〜3.0mmの横寸法を有する血管再生用チャネルを形成する ことをさらに含む、請求項1に記載の方法。 12.前記血管再生用チャネルの開放を維持するために、前記血管再生用チャ ネルに軸線方向に膨張可能な管腔人工器官を配置することをさらに含む、請求項 1に記載の方法。 13.前記活性電極面によって形成された前記血管再生用チャネルが湾曲して いる、請求項1に記載の方法。 14.前記活性電極面によって形成された前記血管再生用チャネルが心臓壁の 一方の側に第一開口、第二開口、及びその間に実質的なU字形状を有する、請求 項13に記載の方法。 15.前記電極端子が、各電極端子を電気的に隔離するために、絶縁マトリッ クスに埋め込まれており、この絶縁マトリックスが無機材料からなる、請求項8 に記載の方法。 16.前記リターン電極が前記活性電極端子から基部方向に凹んでいる、請求 項8に記載の方法。 17.前記リターン電極と前記活性電極端子とが電気外科プローブの先端面に 配置されている、請求項8に記載の方法。 18.前記血管再生用チャネルの深さを制御することをさらに含む、請求項1 に記載の方法。 19.心臓壁の目標部位を見えるように標識することをさらに含む、請求項1 8に記載の方法。 20.目標部位の心臓壁の厚さを決定することをさらに含む、請 求項18に記載の方法。 21.目標部位の心臓壁を通る予め定められた距離を設定することと、前記血 管再生用チャネルの深さを制御するために、前記活性電極面が予め定められた距 離進んだときに、前記活性電極面への電圧の流れを遮断することとをさらに含む 、請求項18に記載の方法。 22.前記決定するステップが、前記活性電極面の先端部を越えたところで組 織インピーダンスを測定することからなる、請求項20に記載の方法。 23.前記活性電極面がいつ心臓壁を通って実質的に穿通されたかを決定する ステップをさらに含む、請求項1に記載の方法。 24.前記活性電極面が心臓壁の反対側の面を貫通する前に高周波数電圧を終 わらせることをさらに含む、請求項23に記載の方法。 25.プローブの先端部を患者の心臓の壁の目標部位の極めて近傍に配置する ことと、 心臓壁を通る血管再生用チャネルを形成するために、前記プローブの先端部を 心臓壁の少なくとも一部分を通って軸線方向に移動しながら組織を切除するため に心臓壁にエネルギを与えることとからなる、患者の心臓の経心筋層血管再生の 方法。 26.前記プローブが、実質的に一定の速度で心臓壁の少なくとも一部分を通 って軸線方向に移動される、請求項25に記載の方法。 27.心臓壁の大部分を通って前記プローブを自動的に移動するための手段を さらに備える、請求項25に記載の方法。 28.心臓壁の一部分を通って血管再生用チャネルを形成することと、 前記血管再生用チャネルの開放を維持するために、前記血管再生用チャネル内 に半径方向に膨張可能な管腔人工器官を配置することとからなる、患者の心臓の 経心筋層血管再生の方法。 29.活性電極面を患者の心臓の壁の目標部位の極めて近傍に配置することと 、 心臓壁の組織を切除して心臓壁の少なくとも一部分を通る血管再生用チャネル を形成するために、前記活性電極面とリターン電極との間に高周波数電圧を印加 することとによって、前記形成ステップが実行される、請求項28に記載の方法 。 30.前記配置ステップが、管状ステントを血管再生用チャネルへ管腔内を配 送することと、管腔の開放を維持するために、前記血管再生用チャネルの壁に対 して管状ステントを半径方向に膨張させることとからなる、請求項29に記載の 方法。 31.前記半径方向への膨張ステップが、前記ステントの管状フレームを半径 方向に膨張させるために前記ステントの軸線方向通孔内で風船を膨張させること からなる、請求項30に記載の方法。 32.前記半径方向への膨張ステップが、前記ステントフレームを半径方向に 圧縮された構成に圧縮することと、前記ステントフレームが前記血管再生用チャ ネル内で膨張した構成に戻ることを可能にすることとからなる、請求項30に記 載の方法。 33.前記可能にするステップが、患者の体からの熱の作用によって実行され る、請求項32に記載の方法。 34.基端部部分と患者の心臓の小さな血管再生用チャネルを通した配送に合 わせた大きさにされた先端部部分とを有する器具シャフトと、 前記先端部部分に配置された一つ又はそれ以上の活性電極と、 前記シャフトに配置された、前記活性電極の近くにあるリターン 電極と、 心臓組織を切除して心臓壁の少なくとも一部部分を通る血管再生用チャネルを 形成するために前記活性電極と前記リターン電極とを高周波数電圧源に電気的に 結合するための、前記シャフトの前記基端部の近くに配置されたコネクタとを備 える、患者の心臓組織の経心筋層血管再生用の電気外科装置。 35.前記シャフトが、患者の心室空腔への管腔内配送に合わせて構成された カテーテルシャフトである、請求項34に記載の装置。 36.前記シャフトが、胸腔への肋間配送に合わせて構成されたプローブシャ フトである、請求項34に記載の装置。 37.前記シャフトの先端部に配置され且つ複数の隔離された電極端子を含ん でいる、電極配列さらに備え、前記電極端子の少なくとも二つからの電流が前記 電極端子と前記リターン電極との間のインピーダンスに基づいて独立的に制御さ れる、請求項35に記載の装置。 38.前記シャフトの先端部部分の最大横寸法が約1.0mm以下である、請 求項34に記載の装置。 39.前記シャフトの先端部部分の最大横寸法が約2.0mm以下である、請 求項34に記載の装置。 40.前記電極端子が、各電極端子を電気的に隔離するために、絶縁マトリッ クスに埋め込まれており、前記絶縁マトリックスが無機材料からなる、請求項3 4に記載の装置。 41.前記リターン電極が前記活性電極から基部方向へ凹んでいる、請求項3 4に記載の装置。 42.前記リターン電極と前記活性電極端子とが前記シャフトの先端表面に配 置されている、請求項34に記載の装置。 43.前記シャフトの先端表面にリターン電極の配列をさらに備え、前記活性 電極と反対の極性を有する、請求項34に記載の装置。 44.前記シャフトの先端部が円錐形表面を有し、前記電極端子がこの円錐形 表面から軸線方向に延びている、請求項34に記載の装置。 45.前記器具シャフトを経皮穿通を通して心室空腔へ配送するために、可撓 性の操縦可能なシャフトを有する案内カテーテルをさらに備える、請求項34に 記載の装置。 46.前記各個々の電極端子と前記リターン電極との間のインピーダンスを決 定するために、前記電極端子に結合されている複数のインピーダンス監視器をさ らに備える、請求項34に記載の装置。 47.基端部と先端部とを有するシャフトを有する電気外科器具と、一つ又は それ以上の活性電極が前記シャフトの先端部の近くに配置されており、前記活性 電極を高周波数電圧源に電気的に結合するためのコネクタが前記シャフトの基端 部の近くに配置されており、 前記活性電極の近くに配置されたリターン電極と、 組織を切除して心臓壁の少なくとも一部分を通って一つ又はそれ以上の血管再 生用チャネルを形成するために、前記シャフトの基端部の近くに配置された、前 記活性電極と前記リターン電極とを高周波数電圧源に電気的に結合するためのコ ネクタと、 一つ又はそれ以上の管腔人工器官を前記電気外科器具によって形成された血管 再生用チャネルに移植するための配送機構とを備える、患者の心臓の経心筋層血 管再生用のシステム。 48.前記配送機構が器具シャフトと一体である、請求項47に記載のシステ ム。 49.管腔人工器官を管腔内を配送し血管再生用チャネル内に移植するために 、前記電気外科プローブから独立している配送カテーテルをさらに備える、請求 項47に記載のシステム。 50.管腔の開放を維持するために、管腔人工器官を半径方向に膨張させて血 管再生用チャネルの内壁に係合させるための手段をさらに備える、請求項47に 記載のシステム。 51.前記半径方向の膨張手段が前記人工器官の軸線方向の通孔内に位置する ように構成された膨張可能な部材からなる、請求項50に記載のシステム。 52.前記管腔人工器官が体温以下のAf温度を有する形状記憶合金からなる 、請求項50に記載のシステム。
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EP (3) | EP1036547A3 (ja) |
JP (1) | JP3033848B2 (ja) |
AT (1) | ATE234592T1 (ja) |
AU (1) | AU709928B2 (ja) |
CA (1) | CA2237795A1 (ja) |
DE (2) | DE69626841T2 (ja) |
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JP2003524499A (ja) * | 2000-02-29 | 2003-08-19 | ボストン サイエンティフィック リミテッド | 慢性全閉塞を阻むrf焼灼および超音波カテーテル |
JP2011508628A (ja) * | 2007-12-28 | 2011-03-17 | セント・ジュード・メディカル・エイトリアル・フィブリレーション・ディヴィジョン・インコーポレーテッド | アブレーションカテーテル等のカテーテルを用いたインピーダンスの測定装置及び測定方法 |
US11896284B2 (en) | 2007-12-28 | 2024-02-13 | St. Jude Medical, Atrial Fibrillation Division, Inc | System and method for measurement of an impedance using a catheter such as an ablation catheter |
WO2015156158A1 (ja) * | 2014-04-11 | 2015-10-15 | オリンパス株式会社 | プラズマ処置システム |
JP5948507B2 (ja) * | 2014-04-11 | 2016-07-06 | オリンパス株式会社 | プラズマ処置システム |
US9918773B2 (en) | 2014-04-11 | 2018-03-20 | Olympus Corporation | Plasma treatment system |
US9913649B2 (en) | 2014-05-28 | 2018-03-13 | Boston Scientific Scimed, Inc. | Catheter with radiofrequency cutting tip and heated balloon |
Also Published As
Publication number | Publication date |
---|---|
US5810764A (en) | 1998-09-22 |
DE29623990U1 (de) | 2001-02-08 |
EP0865256A1 (en) | 1998-09-23 |
DE69626841D1 (de) | 2003-04-24 |
US5873855A (en) | 1999-02-23 |
AU709928B2 (en) | 1999-09-09 |
EP1036547A3 (en) | 2000-12-27 |
ATE234592T1 (de) | 2003-04-15 |
CA2237795A1 (en) | 1997-05-29 |
AU1057197A (en) | 1997-06-11 |
US6032674A (en) | 2000-03-07 |
US5860951A (en) | 1999-01-19 |
US7422585B1 (en) | 2008-09-09 |
JP3033848B2 (ja) | 2000-04-17 |
DE69626841T2 (de) | 2003-12-18 |
EP1179320A2 (en) | 2002-02-13 |
EP1036547A2 (en) | 2000-09-20 |
EP1179320A3 (en) | 2003-12-03 |
EP0865256B1 (en) | 2003-03-19 |
EP0865256A4 (ja) | 1998-10-07 |
NZ323589A (en) | 1999-07-29 |
US5683366A (en) | 1997-11-04 |
WO1997018768A1 (en) | 1997-05-29 |
US6113597A (en) | 2000-09-05 |
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