JP7532033B2 - 多極電極アセンブリを使用したecg信号のマッピング - Google Patents
多極電極アセンブリを使用したecg信号のマッピング Download PDFInfo
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Description
以下に記載される本発明の実施形態は、心電図(ECG)信号などの患者身体内の解剖学的信号によって引き起こされる波面の方向及び伝搬速度を推定するための改善された方法及びシステムを提供する。いくつかの実施形態では、ECG信号によって引き起こされる波面の方向及び伝搬速度を推定するシステムは、挿入チューブに結合された遠位端アセンブリを有する低侵襲プローブと、プロセッサとを備える。遠位端アセンブリは、アームとも称される複数のスパインを備え、各スパインは、フレキシブルプリント回路基板(PCB)から作製されたストリップを備える。
図1は、本発明の一実施形態による、カテーテル追跡システム20の概略絵画図である。システム20は、本実施例では心カテーテル22であるプローブと、制御コンソール24と、を含む。本明細書に記載する実施形態では、カテーテル22は、例えば、心不整脈などの心機能障害を診断するための心電信号のマッピング、及び/又は、例えば、上述のマッピングに基づく、心臓26内の組織のアブレーションなど、任意の好適な治療及び/又は診断目的に使用されてもよい。
ここで挿入図52を参照する。いくつかの実施形態では、各スパイン42は、遠位端アセンブリ40の遠位先端部に位置するキャップ44に結合される。いくつかの実施形態では、カテーテル22はシャフト46を更に備え、シャフト46は、アセンブリ40の折り畳まれた位置と伸張された位置との間の移行に使用される。例えば、カテーテル22を心臓26内に挿入した後に、シャフト46は、遠位端アセンブリ40をシース(図示せず)から引き出して、アセンブリ40を伸張された位置に至らせるように構成されている。同様に、医療処置を完了した後、典型的にはカテーテル22を患者身体から後退させる前に、シャフト46は、遠位端アセンブリ40をシースの中に後退させて折り畳まれた位置にするように構成されている。
図2は、本発明の一実施形態による、心臓26内のECG信号によって引き起こされる波面の方向及び伝搬速度を測定するように構成された電極アセンブリ300の概略描画図である。電極アセンブリ300は、例えば、上記の図1の電極アセンブリ50を置き換えてもよく、ECG信号又は患者28の身体内の任意の他の信号を検出するように構成されている。
(1) 患者身体内へ挿入するための挿入チューブと、
前記挿入チューブの遠位端に取り付けられた少なくともアームと、
前記アームに結合され、内部組織に接触するように構成された少なくとも基準電極と、
前記アームに結合され、解剖学的信号を検出するように前記基準電極を取り囲む複数の電極であって、前記解剖学的信号は、前記基準電極に対して相対的に測定された場合に、前記患者身体内の前記解剖学的信号の大きさ及び方向を示す、複数の電極と、を備える医療用プローブ。
(2) 前記電極は前記基準電極の周りに不均一な形状で配置されている、実施態様1に記載のプローブ。
(3) 前記解剖学的信号は、心電図(ECG)信号を含む、実施態様1に記載のプローブ。
(4) 前記電極のうちの1つ以上に電気的に接続され、前記電気信号を前記患者身体の外部にあるシステムに伝達するように構成されている、電気導体を備える、実施態様1に記載のプローブ。
(5) 前記電極のうちの1つ以上に電気的に接続され、前記電気信号を前記患者身体の外部にあるシステムに伝達するように構成されている、1つ以上の無線通信デバイスを備える、実施態様1に記載のプローブ。
(7) 前記電気信号は、前記解剖学的信号の方向を示す、実施態様1に記載のプローブ。
(8) 前記電気信号は、前記解剖学的信号の伝搬速度を示す、実施態様1に記載のプローブ。
(9) 方法であって、
医療用プローブから電気信号を受信することであって、前記医療用プローブは、(a)挿入チューブの遠位端に取り付けられた少なくともアームと、(b)前記アームに結合された少なくとも基準電極と、(c)前記アームに結合され、前記基準電極を取り囲んで、身体組織内の解剖学的信号を検出する複数の電極とを含み、
前記電気信号は、前記基準電極に対して相対的に測定された場合に、患者身体の前記身体組織内の解剖学的信号の方向を示す、ことと、
前記電気信号に基づいて、前記解剖学的信号の方向及び伝搬速度のうちの少なくとも1つを推定することと、を含む方法。
(10) 前記電極は前記基準電極の周りに不均一な形状で配置されている、実施態様9に記載の方法。
(12) 医療用プローブを製造する方法であって、
挿入チューブの遠位端に少なくともアームを取り付けることと、
前記アームに少なくとも基準電極を結合させることと、
不均一な形状に配置され、かつ前記基準電極を取り囲む複数の電極を前記アームに結合させることと、を含む、方法。
(13) 前記基準電極及び前記複数の電極を、電気導体を介して前記患者身体の外部にあるシステムに接続することを含む、実施態様12に記載の方法。
(14) 前記基準電極及び前記複数の電極を、前記アームに結合された1つ以上の無線通信デバイスに接続することを含む、実施態様12に記載の方法。
(15) 前記アームは、フレキシブルプリント回路基板(PCB)を含む、実施態様12に記載の方法。
医療用プローブであって、
患者身体内へ挿入するための挿入チューブ、
前記挿入チューブの遠位端に取り付けられた少なくともアーム、及び、
前記アームに結合され、前記患者身体内の電気信号を検出するように構成されている複数の電極であって、前記電気信号は、前記基準電極に対して相対的に測定された場合に、前記患者身体内の解剖学的信号を示す、複数の電極、を備える医療用プローブと、
前記電気信号に基づいて、前記解剖学的信号の方向及び伝搬速度のうちの少なくとも1つを推定するように構成されたプロセッサと、
を備える、システム。
(17) 前記基準電極は、前記患者身体の皮膚に結合された身体表面電極を備える、実施態様16に記載のシステム。
(18) 前記基準電極は、基準信号を有する仮想電極を備え、前記プロセッサは、前記患者身体の皮膚に結合された少なくとも2つの身体表面電極から受信された追加電気信号に基づいて、前記基準信号を計算するように構成されている、実施態様16に記載のシステム。
(19) 前記プロセッサは、前記身体表面電極のうちの少なくとも2つの前記追加電気信号を平均化することによって、前記基準信号を計算するように構成されている、実施態様18に記載のシステム。
(20) 前記基準電極は前記アームに結合され、前記複数の電極は前記基準電極を取り囲んでいる、実施態様16に記載のシステム。
Claims (14)
- 患者身体内へ挿入するための挿入チューブと、
前記挿入チューブの遠位端に取り付けられてフレキシブルプリント回路基板(PCB)を備える少なくともアームと、
前記PCBの外面に形成され、内部組織に接触するように構成された少なくとも基準電極と、
前記PCBの前記外面に形成され、前記内部組織に接触するように構成され、解剖学的信号を検出するように前記基準電極を取り囲む複数の電極と、を備え、
前記解剖学的信号が前記基準電極に対して相対的に測定された場合に、前記複数の電極が前記患者身体内の前記解剖学的信号の大きさ及び方向を示す電気信号を提供するように、
前記複数の電極と、前記基準電極とは、多極構成で複数の双極子を形成する医療用プローブ。 - 前記複数の電極は前記基準電極の周りに、前記基準電極の重心が前記複数の電極の中の任意の対の電極間を接続する直線上に位置しない幾何学的構造の形状で配置されている、請求項1に記載のプローブ。
- 前記解剖学的信号は、心電図(ECG)信号を含む、請求項1に記載のプローブ。
- 前記複数の電極のうちの1つ以上に電気的に接続され、前記電気信号を前記患者身体の外部にあるシステムに伝達するように構成されている、電気導体を備える、請求項1に記載のプローブ。
- 前記複数の電極のうちの1つ以上に電気的に接続され、前記電気信号を前記患者身体の外部にあるシステムに伝達するように構成されている、1つ以上の無線通信デバイスを備える、請求項1に記載のプローブ。
- 前記電気信号は、前記解剖学的信号の伝搬速度を示す、請求項1に記載のプローブ。
- 医療用プローブと、プロセッサとを備えるシステムの作動方法であって、
前記プロセッサが、前記医療用プローブから電気信号を受信することであって、前記医療用プローブは、(a)挿入チューブの遠位端に取り付けられてフレキシブルプリント回路基板(PCB)を備える少なくともアームと、(b)前記PCBの外面に形成された少なくとも基準電極と、(c)前記PCBの前記外面に形成され、前記基準電極を取り囲んで、身体組織内の解剖学的信号を検出する複数の電極とを含み、
前記解剖学的信号は、前記基準電極に対して相対的に測定された場合に、前記複数の電極が患者身体の前記身体組織内の前記解剖学的信号の方向を示す電気信号を提供するように、前記複数の電極と、前記基準電極とは、多極構成で複数の双極子を形成する、ことと、
前記プロセッサが、前記電気信号に基づいて、前記解剖学的信号の方向及び伝搬速度のうちの少なくとも1つを推定することと、を含む方法。 - 前記複数の電極は前記基準電極の周りに、前記基準電極の重心が前記複数の電極の中の任意の対の電極間を接続する直線上に位置しない幾何学的構造の形状で配置されている、請求項7に記載の方法。
- 前記解剖学的信号は、心電図(ECG)信号を含む、請求項7に記載の方法。
- 医療用プローブを製造する方法であって、
患者身体内へ挿入するための挿入チューブの遠位端にフレキシブルプリント回路基板(PCB)を備える少なくともアームを取り付けることと、
前記PCBの外面に少なくとも基準電極を形成させることと、
前記基準電極の重心が複数の電極の中の任意の対の電極間を接続する直線上に位置しない幾何学的構造の形状に配置され、かつ前記基準電極を取り囲んで、患者の身体組織内の解剖学的信号を検出する前記複数の電極を前記PCBの外面に形成させることと、
前記解剖学的信号が前記基準電極に対して相対的に測定された場合に、前記複数の電極が患者身体の前記身体組織内の解剖学的信号の方向を示す電気信号を提供するように、前記複数の電極と、前記基準電極とは、多極構成で複数の双極子を形成する、ことと、
を含む、方法。 - 前記基準電極及び前記複数の電極を、電気導体を介して前記身体組織の外部にあるシステムに接続することを含む、請求項10に記載の方法。
- 前記基準電極及び前記複数の電極を、前記アームに結合された1つ以上の無線通信デバイスに接続することを含む、請求項10に記載の方法。
- 医療用プローブであって、
患者身体内へ挿入するための挿入チューブ、
前記挿入チューブの遠位端に取り付けられてフレキシブルプリント回路基板(PCB)を備える少なくともアーム、
前記PCBの外面に形成され、内部組織に接触するように構成された基準電極、及び、
前記PCBの前記外面に形成され、前記患者身体内の解剖学的信号を検出するように構成されている複数の電極を備え、前記解剖学的信号が前記基準電極に対して相対的に測定された場合に、前記複数の電極が前記患者身体内の前記解剖学的信号の大きさ及び方向を示す電気信号を提供するように、
前記複数の電極と、前記基準電極とは、多極構成で複数の双極子を形成する医療用プローブと、
前記電気信号に基づいて、前記解剖学的信号の方向及び伝搬速度のうちの少なくとも1つを推定するように構成されたプロセッサと、
を備える、システム。 - 前記複数の電極は前記基準電極を取り囲んでいる、請求項13に記載のシステム。
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2018
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| JP2017511166A (ja) | 2014-02-25 | 2017-04-20 | 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 | 不整脈源の分類のために電気生理学的性質を利用するためのシステムおよび方法 |
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| US11207016B2 (en) | 2021-12-28 |
| EP3673800B1 (en) | 2024-05-01 |
| EP3673800A1 (en) | 2020-07-01 |
| EP3673800C0 (en) | 2024-05-01 |
| US20250302361A1 (en) | 2025-10-02 |
| CN111374662B (zh) | 2023-12-05 |
| US20200205689A1 (en) | 2020-07-02 |
| IL271610B2 (en) | 2023-07-01 |
| EP4431020A2 (en) | 2024-09-18 |
| EP4431020A3 (en) | 2024-11-06 |
| US12329531B2 (en) | 2025-06-17 |
| IL271610A (en) | 2020-06-30 |
| JP2020108773A (ja) | 2020-07-16 |
| IL271610B1 (en) | 2023-03-01 |
| CN111374662A (zh) | 2020-07-07 |
| US20220079496A1 (en) | 2022-03-17 |
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