JP2013511330A - アブレーション治療の有効送達を評価するためのシステムおよび方法 - Google Patents
アブレーション治療の有効送達を評価するためのシステムおよび方法 Download PDFInfo
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Abstract
【解決手段】組織12の解剖学的マップが体積74を規定するマップを伴って生成され表示される。指数は、前記体積74内における位置76に対応して生成される。前記指数は、前記位置76におけるアブレーション治療の状態を示している。前記指数は、前記位置76におけるアブレーション電極52の持続時間、供給されたエネルギー量、アブレーション電極52と組織12との間の電気的結合度及び温度などに由来しうる。前記位置76に対応する解剖学的マップのある部分における色の強度などの視覚的特徴は、前記指数に応じて変更される。
【選択図】図1
Description
本出願は、2009年11月20日出願の米国特許仮出願第12/622,626号の利益を主張し、これは、本書で全体を記載するかのように参照として本書に援用される。
(1)Z=R+jX
(式中、Rは抵抗成分(オームで表す)であり;およびXはリアクタンス成分(同様にオームで表す)である)に示す直角座標で表すことができる。複素インピーダンスはまた、式(2):
Z=r・ejθ=|Z|・ej∠Z
(式中、|Z|は複素インピーダンスの大きさ(オームで表す)であり、∠Z=θは、位相角(ラジアンで表す)である)で示す極座標で表すこともできる。あるいは、位相角は、
g=ablation_energy*ECI
(式中、ablation_energyは、ジェネレータ24によって位置にもたらされるアブレーションエネルギー量を表し、およびECIは、電極52と組織12との間の電気的結合度を表す指数である)から導出されてもよい。本発明の別の実施形態では、指数CAIは以下の関数:
g=α*ablation_energy*ECI+β*temperature
(式中、αおよびβは定数であり、およびtemperatureは、カテーテル16の遠位端部50に近接した部分の温度である)から導出されてもよい。指数CAIの各因子は、因子に関連した閾値と比較されて、指数CAIの部分を形成するいずれの因子も、その位置でのアブレーション治療効果の予め定められたレベルを確実に示すようにし得る(例えば、アブレーションへの組織の短時間かつ可逆的な曝露とは反対に、不可逆的な損傷部を生じる治療)。例えば、指数CAIに入力された電極52と組織12との間の結合度は、以下:
ECI=ECI(t)−ECInon−contact
(式中、ECInon−contactは、ECIの閾値を表す(一般に100±5であるが、ECIは、一般に電極52が組織12にわずかに接触している場合140〜180である))のように計算されてもよい。同様に、ablation_energyは、非常に低い電力レベル(例えば、1ワット)では組織12に検出可能な変化をもたらさないことを補償するための閾値に関して計算してもよい:
ablation_energy=ablation_energy(t)−1
体内温度を上回る測定温度は、有効なアブレーション治療効果を示すため、指数CAIにおける温度値を判断するための関数は、閾値として体温を使用し得る:
Temperature=Catheter_temperature(t)−Body_temperature(t)
温度値はまた、灌注、潅注流体の流量およびカテーテル16の他の設計パラメータの影響を受け得ること、および上記関数は、そのようなパラメータを計上するために変化し得ることを理解されたい。
CAI=0.025*(ECI−90)*(ablation_energy−3.4)+2*(temperature−37)
から計算した。ECIに関しては、ablation_energy、およびtemperatureは全て閾値と比較され、各因子が、その位置におけるアブレーション治療の予め定められたレベルを示す場合にのみ(例えば、アブレーションへの短期間の可逆的な組織の曝露とは反対の、不可逆的な損傷部を生じる治療)、CAIに影響を与えるようにした
Claims (20)
- 身体内の組織へのアブレーション治療効果の有効送達を評価するシステムであって、
前記組織の3次元解剖学的マップを生成するように構成された電子制御装置であって、前記マップが、対応する体積を規定する、電子制御装置と
前記解剖学的マップを表示するように構成されたディスプレイと、
を備え、
前記電子制御装置が、さらに、前記体積内の第1の位置に対応する指数であって前記第1の位置におけるアブレーション治療の状態を示す指数を生成し、かつ前記指数に応じて前記第1の位置に対応する前記解剖学的マップの部分の視覚的な特徴を変更するようにさらに構成されている、システム。 - 前記体積が複数のボクセルに分割され、前記解剖学的マップの前記部分が、前記複数のボクセルのうちの第1のボクセルを含み、前記第1の位置は前記第1のボクセル内にある、請求項1に記載のシステム。
- 前記解剖学的マップが表面を規定し、前記部分が前記表面の一部を含み、前記電子制御装置が、前記指数に応じて前記部分の視覚的な特徴および前記第1の位置と前記表面の前記一部との間の距離を変更する、請求項1に記載のシステム。
- 前記電子制御装置が、さらに、アブレーションカテーテルの位置を決定し、かつ予め定められた期間にわたる前記アブレーションカテーテルの複数の位置に応じて前記第1の位置を決定するように構成されている、請求項1に記載のシステム。
- 前記視覚的な特徴が色を含む、請求項1に記載のシステム。
- 前記視覚的な特徴が前記色の強度を含む、請求項5に記載のシステム。
- 前記電子制御装置が、前記組織へのアブレーション治療の送達を示す複数の因子に応じて前記指数を生成し、かつ前記電子制御装置が、ユーザ入力に応じて前記因子の少なくとも1つに合致する重みを調整するように構成されている、請求項1に記載のシステム。
- 前記組織へのアブレーション治療効果の送達を示す因子の値が、前記因子に関連した閾値を超えるときにのみ、前記指数が、前記因子に応じて生成される、請求項1に記載のシステム。
- 前記指数が、アブレーションエネルギーが前記第1の位置にもたらされている間の持続時間に応じて生成される、請求項1に記載のシステム。
- 前記指数が、前記第1の位置にもたらされるアブレーションエネルギー量に応じて生成される、請求項1に記載のシステム。
- 前記指数が、アブレーション電極と前記組織との間の接触度に応じて生成される、請求項1に記載のシステム。
- 前記指数が、アブレーション電極と前記組織との間の電気的結合度に応じて生成される、請求項1に記載のシステム。
- 前記指数が、前記第1の位置に近接した部位の温度に応じて生成される、請求項1に記載のシステム。
- 身体内の組織へのアブレーション治療の有効送達を評価するための方法であって、
前記組織の3次元解剖学的マップを生成するステップであって、前記マップが、対応する体積を規定するステップと、
前記解剖学的マップを表示するステップと
前記体積内の第1の位置に対応する指数を生成するステップであって、前記指数が、前記第1の位置におけるアブレーション治療の状態を示すステップと、
前記指数に応じて前記第1の位置に対応する前記解剖学的マップの部分の視覚的な特徴を変更するステップと、
を含む方法。 - さらに、前記指数が前記組織へのアブレーション治療の送達を示す複数の因子に応じて生成され、およびユーザ入力に応じて前記因子の少なくとも1つに合致する重みを調整するステップを含む、請求項14に記載の方法。
- 前記組織へのアブレーション治療効果の送達を示す因子の値が、前記因子に関連する閾値を超えるときにのみ、前記指数が前記因子に応じて生成される、請求項14に記載の方法。
- 前記指数が、前記第1の位置にもたらされるアブレーションエネルギー量に応じて生成される、請求項14に記載の方法。
- 前記指数が、アブレーション電極と前記組織との間の接触度に応じて生成される、請求項14に記載の方法。
- 前記指数が、アブレーション電極と前記組織との間の電気的結合度に応じて生成される、請求項14に記載の方法。
- 前記指数が、アブレーションカテーテルの先端に近接した部位の温度に応じて生成される、請求項14に記載の方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/622,626 | 2009-11-20 | ||
| US12/622,626 US8454589B2 (en) | 2009-11-20 | 2009-11-20 | System and method for assessing effective delivery of ablation therapy |
| PCT/US2010/050239 WO2011062681A1 (en) | 2009-11-20 | 2010-09-24 | System and method for assessing effective delivery of ablation therapy |
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| Publication Number | Publication Date |
|---|---|
| JP2013511330A true JP2013511330A (ja) | 2013-04-04 |
| JP2013511330A5 JP2013511330A5 (ja) | 2014-06-19 |
| JP5568140B2 JP5568140B2 (ja) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2012539888A Active JP5568140B2 (ja) | 2009-11-20 | 2010-09-24 | アブレーション治療の有効送達を評価するためのシステムおよび方法 |
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| Country | Link |
|---|---|
| US (5) | US8454589B2 (ja) |
| EP (1) | EP2501280B1 (ja) |
| JP (1) | JP5568140B2 (ja) |
| WO (1) | WO2011062681A1 (ja) |
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| JP2013027706A (ja) * | 2011-07-27 | 2013-02-07 | Biosense Webster (Israel) Ltd | アブレータ用のテスト治具 |
| JP2017094066A (ja) * | 2015-11-06 | 2017-06-01 | バイオセンス・ウエブスター・(イスラエル)・リミテッドBiosense Webster (Israel), Ltd. | 肺静脈隔離間隙発見装置 |
| JP2018094418A (ja) * | 2016-12-13 | 2018-06-21 | バイオセンス・ウエブスター・(イスラエル)・リミテッドBiosense Webster (Israel), Ltd. | アブレーションの計画と制御のための方法及び装置 |
| JP2019519271A (ja) * | 2016-05-03 | 2019-07-11 | セント・ジュード・メディカル,カーディオロジー・ディヴィジョン,インコーポレイテッド | 部分的に組織性状診断に基づく損傷予測 |
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| US8403925B2 (en) | 2006-12-06 | 2013-03-26 | St. Jude Medical, Atrial Fibrillation Division, Inc. | System and method for assessing lesions in tissue |
| US10363092B2 (en) | 2006-03-24 | 2019-07-30 | Neuwave Medical, Inc. | Transmission line with heat transfer ability |
| US11389235B2 (en) | 2006-07-14 | 2022-07-19 | Neuwave Medical, Inc. | Energy delivery systems and uses thereof |
| US10376314B2 (en) | 2006-07-14 | 2019-08-13 | Neuwave Medical, Inc. | Energy delivery systems and uses thereof |
| US9192789B2 (en) * | 2008-10-30 | 2015-11-24 | Vytronus, Inc. | System and method for anatomical mapping of tissue and planning ablation paths therein |
| US8900150B2 (en) | 2008-12-30 | 2014-12-02 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Intracardiac imaging system utilizing a multipurpose catheter |
| US8948476B2 (en) * | 2010-12-20 | 2015-02-03 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Determination of cardiac geometry responsive to doppler based imaging of blood flow characteristics |
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| US20110125150A1 (en) | 2011-05-26 |
| WO2011062681A1 (en) | 2011-05-26 |
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| EP2501280A4 (en) | 2014-11-26 |
| US12201352B2 (en) | 2025-01-21 |
| US20190151014A1 (en) | 2019-05-23 |
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