JP2000506415A - 冷却素子を伴う多アンテナのアブレーション装置及び方法 - Google Patents
冷却素子を伴う多アンテナのアブレーション装置及び方法Info
- Publication number
- JP2000506415A JP2000506415A JP9532881A JP53288197A JP2000506415A JP 2000506415 A JP2000506415 A JP 2000506415A JP 9532881 A JP9532881 A JP 9532881A JP 53288197 A JP53288197 A JP 53288197A JP 2000506415 A JP2000506415 A JP 2000506415A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- probe
- tissue
- temperature
- 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.)
- Granted
Links
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Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.ハンドピースと、 上記ハンドピースに接続された電極であって、組織に突き刺さるに充分なほど 先鋭な速方端と、内腔と、この内腔を通して少なくとも部分的に延びる冷却媒体 導入コンジット及び冷却媒体放出コンジットとを含むと共に、更に、これら導入 及び放出コンジットに流れる冷却媒体から分離されたポートも含み、そしてエネ ルギー源に接続されるように構成された電極と、 上記電極の内腔に少なくとも部分的に配置されたプローブであって、その遠方 部分が少なくとも1つの曲率半径で上記ポートから送り出されるように構成され たプローブと、 上記プローブに接続された熱センサと、 を備えたことを特徴とするアブレーション装置。 2.再循環冷却装置が上記電極の遠方端に閉ループを形成する請求項1に記載 の装置。 3.上記電極の内腔は、冷却媒体から分離されたままである注入媒体を受け入 れるように構成される請求項1に記載の装置。 4.上記注入媒体は、電極の内腔の近方端を経て上記ポートを通り組織の場所 に導入される請求項3に記載の装置。 5.上記プローブに接続された前進及び後退部材を更に含む請求項1に記載の 装置。 6.上記プローブの少なくとも一部分は、エネルギー源に接続された電極であ る請求項1に記載の装置。 7.2つの熱センサがプローブに接続される請求項1に記載の装置。 8.第1の熱センサはプローブの遠方端に配置され、そして第2の熱センサは プローブの遠方端以外の位置に配置される請求項7に記載の装置。 9.熱センサはプローブの遠方端に配置される請求項1に記載の装置。 10.上記電極の外面の周りに配置された絶縁スリーブを更に含む請求項1に 記載の装置。 11.上記絶縁スリーブは、電極の長手軸に沿って移動できる請求項1に記載 の装置。 12.電極に形成された第2のポートを更に含む請求項1に記載の装置。 13.上記電極の内腔に少なくとも部分的に配置された第2のプローブであっ て、その遠方部分が少なくとも1つの曲率半径で第2ポートから送り出されるよ うに構成された第2プローブと、 上記電極の内腔に少なくとも部分的に配置されたプローブであって、その遠方 部分が少なくとも1つの曲率半径で上記ポートから送り出されるように構成され たプローブと、 上記第2プローブに接続された第2の熱センサと、 を更に備えた請求項12に記載の装置。 14.上記第1及び第2のコンジットは、電極に対する構造的な支持を追加す るように構成される請求項1に記載の装置。 15.上記プローブの遠方端は、プローブがポートから展開されるときに電極 を固定位置に保持するように幾何学的に構成される請求項1に記載の装置。 16.上記第1及び第2のコンジットは、電極の内腔において互いに隣接して 配置される請求項1に記載の装置。 17.組織の場所の測定された温度を所定の温度値と比較し、そして測定され た温度と所定の温度との差を表す信号を発生するための比較器を更に備えた請求 項1に記載の装置。 18.温度差を表す上記比較器からの信号に応答して、測定温度を所定の温度 以下に維持するように、上記電極の内腔を通る冷却媒体の流量を調整するための 流量制御器を更に備えた請求項17に記載の装置。 19.上記エネルギー源に接続されたエネルギー出力制御器を更に備えた請求 項1に記載の装置。 20.上記エネルギー出力制御器は、 組織に付与されるエネルギーに基づいて組織のインピーダンス値を測定するた めのインピーダンス測定装置と、 測定された組織のインピーダンス値を所定の最大インピーダンス値と比較し、 測定されたインピーダンス値が所定の最大インピーダンス値を越える場合にディ スエイブル信号を発生するインピーダンス比較器と、 上記ディスエイブル信号をエネルギー源に通信して、エネルギー源から電極へ のエネルギーの更なる付与を停止するための通信装置と、 を含む請求項19に記載の装置。 21.インピーダンスの差を表す上記インピーダンス比較器からの信号に応答 して、測定インピーダンス値を所定の最大インピーダンス値以下に維持するよう に、上記電極の内腔を通る冷却媒体の流量を調整するための冷却媒体制御器を更 に備えた請求項20に記載の装置。 22.ハンドピースと、 上記ハンドピースの遠方端から延びる電極であって、遠方端と、内腔と、この 電極内腔を通して電極の遠方端へと延びる冷却媒体導入コンジット及び冷却媒体 放出コンジットとを含むと共に、更に、これら導入及び放出コンジットに流れる 冷却媒体から分離された側壁ポートも含む電極と、 上記導入コンジットに接続された冷却媒体源と、 上記電極に接続されたエネルギー源と、 上記電極及びエネルギー源に接続され、選択された組織のアブレーション場所 の温度を感知するための温度センサと、 選択された組織のアブレーション場所の温度を所定の温度値と比較し、そして その温度差を表す信号を発生するための比較器と、 温度差を表す上記比較器からの信号に応答して、選択された組織の場所の測定 温度を所定の温度値以下に維持するように、上記導入及び放出コンジットを通る 冷却媒体の流量を調整するための流体制御器と、 を備えたことを特徴とするアブレーション装置。 23.上記冷却媒体導入及び放出コンジットは、上記電極の遠方端に閉ループ を形成する請求項22に記載の装置。 24.上記電極の外面の周りに配置された絶縁スリーブを更に含む請求項22 に記載の装置。 25.上記絶縁スリーブは、電極の長手軸に沿って移動できる請求項24に記 載の装置。 26.上記絶縁スリーブに配置されたプローブであって、絶縁スリーブのポー トを通して絶縁スリーブに送り込まれたり引っ込められたりするように構成され たプローブを更に含む請求項22に記載の装置。 27.上記プローブに接続された前進及び後退部材を更に含む請求項22に記 載の装置。 28.上記プローブの少なくとも一部分は、エネルギー源に接続された電極で ある請求項26に記載の装置。 29.上記プローブによりセンサが支持される請求項22に記載の装置。 30.上記プローブの遠方端には熱センサが配置される請求項29に記載の装 置。 31.上記プローブにより2つの熱センサが支持される請求項26に記載の装 置。 32.第1の熱センサはプローブの遠方端に配置され、そして第2の熱センサ はプローブの遠方端以外の位置に配置される請求項26に記載の装置。 33.上記電極に形成された第2の側壁ポートを更に含む請求項22に記載の 装置。 34.上記第1及び第2のコンジットは、電極に構造的な支持を追加するよう に構成される請求項22に記載の装置。 35.上記プローブの遠方端は、プローブがポートから展開されるときに電極 を固定位置に保持するように幾何学的に構成される請求項26に記載の装置。 36.上記第1及び第2のコンジットは、電極の内腔において互いに隣接して 配置される請求項22に記載の装置。 37.選択された組織のかたまりにアブレーション体積部を形成する方法にお いて、 アブレーション装置を用意し、このアブレーション装置は、ハンドピースと、 電極であって、遠方端、内腔、及び電極に流れる冷却媒体から分離された側壁ポ ートを伴う電極と、ハンドピースの内腔に配置されそして側壁の孔に送り込んだ り引っ込めたりするように構成されたプローブと、このプローブに支持された熱 センサとを備え、 上記電極を選択された組織のかたまりへ挿入し、 電極の電磁エネルギー付与面の付近に組織界面を形成し、 プローブの遠方端を上記孔から選択された組織のかたまりへ送り込み、 上記電極の電磁エネルギー付与面の少なくとも一部分を冷却し、 上記電極の電磁エネルギー付与面から選択された組織のかたまりへ電磁エネル ギーを付与し、 選択された組織のかたまりの場所の温度を測定し、そして 選択された組織のかたまりにアブレーション体積部を形成する、 という段階を備えたことを特徴とする方法。 38.選択されたアブレーション体積部の周囲に熱センサを配置する請求項3 7に記載の方法。 39.上記熱センサは、電極と、選択されたアブレーション体積部の周囲との 間に配置される請求項37に記載の方法。 40.電極から電磁エネルギーが付与される間に上記選択されたアブレーショ ン体積部の2つ以上の位置で温度を測定する請求項37に記載の方法。 41.電極から電磁エネルギーが付与される間に上記選択されたアブレーショ ン体積部において温度を調整可能に測定する請求項37に記載の方法。 42.上記プローブに第2のセンサが支持される請求項37に記載の方法。 43.上記プローブの遠方端にセンサが配置され、そして上記プローブの遠方 端と電極の外面との間で上記プローブに第2のセンサが配置される請求項37に 記載の方法。 44.上記孔を通して注入媒体を導入する請求項37に記載の方法。 45.上記注入媒体は、冷却媒体から分離される請求項44に記載の方法。 46.選択された組織の場所に電磁エネルギーが付与されたときに組織界面が 50℃を越える温度に加熱される請求項37に記載の方法。 47.上記プローブの展開された遠方端は、選択された位置に電極を固定する 請求項37に記載の方法。 48.選択された組織の場所の温度をセンサで測定し、 選択された組織の場所のセンサで測定した温度を所定の温度値と比較し、そし て測定された温度と所定の温度値との差を表す信号を発生し、そして 測定された温度が所定の温度値を越える場合に更なる電磁エネルギーの供給を 停止するための信号を、電極に接続された電磁エネルギー源に送信する、 という段階を更に含む請求項37に記載の方法。 49.選択された組織の場所のインピーダンスをセンサで測定し、 選択された組織の場所のセンサで測定したインピーダンスを所定のインピーダ ンス値と比較し、そして測定されたインピーダンスと所定のインピーダンス値と の差を表す信号を発生し、そして 測定されたインピーダンスが所定のインピーダンス値を越える場合に更なる電 磁エネルギーの供給を停止するための信号を、電極に接続された電磁エネルギー 源に送信する、 という段階を更に含む請求項37に記載の方法。 50.選択された組織の場所の温度をセンサで測定し、 選択された組織の場所のセンサで測定した温度を所定の温度値と比較し、そし て 測定された温度と所定の温度値との差に基づいて電極を通る冷却媒体の流量を 調整する、 という段階を更に含む請求項37に記載の方法。 51.導入及び放出コンジットに流れる冷却媒体の流量は、1ないし50ml /分である請求項37に記載の方法。
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PCT/US1997/004098 WO1997033524A1 (en) | 1996-03-15 | 1997-03-14 | Multiple antenna ablation apparatus and method with cooling element |
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- 1997-03-14 EP EP97915985A patent/EP0891158B1/en not_active Expired - Lifetime
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- 1997-03-14 DE DE69730824T patent/DE69730824T2/de not_active Expired - Lifetime
- 1997-03-14 ES ES97915985T patent/ES2229345T3/es not_active Expired - Lifetime
- 1997-03-14 JP JP53288197A patent/JP4001210B2/ja not_active Expired - Fee Related
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Cited By (3)
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JP2003534037A (ja) * | 2000-03-17 | 2003-11-18 | リタ メディカル システムズ インコーポレイテッド | 肺処置装置 |
JP2005144159A (ja) * | 2003-10-24 | 2005-06-09 | Biosense Webster Inc | カテーテル |
JP2013540517A (ja) * | 2010-09-29 | 2013-11-07 | コーニンクレッカ フィリップス エヌ ヴェ | 適応高周波アブレーションのための温度フィードバックのためのシステム及び方法 |
Also Published As
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EP0891158A1 (en) | 1999-01-20 |
AU2327197A (en) | 1997-10-01 |
JP2007125414A (ja) | 2007-05-24 |
US5810804A (en) | 1998-09-22 |
EP0891158B1 (en) | 2004-09-22 |
KR19990087805A (ko) | 1999-12-27 |
WO1997033524A1 (en) | 1997-09-18 |
ES2229345T3 (es) | 2005-04-16 |
DE69730824D1 (de) | 2004-10-28 |
JP4001210B2 (ja) | 2007-10-31 |
DE69730824T2 (de) | 2005-11-17 |
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