JPWO2020227234A5 - - Google Patents

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JPWO2020227234A5
JPWO2020227234A5 JP2021562115A JP2021562115A JPWO2020227234A5 JP WO2020227234 A5 JPWO2020227234 A5 JP WO2020227234A5 JP 2021562115 A JP2021562115 A JP 2021562115A JP 2021562115 A JP2021562115 A JP 2021562115A JP WO2020227234 A5 JPWO2020227234 A5 JP WO2020227234A5
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  1. 刺激デバイスによる電気刺激の適用によって引き起こされる過渡ノイズを含むECG信号をノイズ除去するためのノイズ除去システムであって、前記ノイズ除去システムが、患者からECG信号を取得するように構成されたECG電極アレイに通信可能に結合され、前記ノイズ除去システムが、回路であって、
    電気刺激が投与されていることを示す同期信号が電気刺激システムから受信されたときの時間期間に対応する前記ECG信号の部分を識別することによって、前記過渡ノイズを含む前記ECG信号の部分を検出するように、かつ
    前記過渡ノイズを含む前記ECG信号の前記検出された部分をノイズ除去するように構成され、前記ECG信号の前記検出された部分をノイズ除去することは、前記過渡ノイズを含む前記ECG信号の前記検出された部分をブランキングすることと、過渡ノイズが低減された修正されたECG信号を提供するために前記ブランクされた部分を修正することとを含む、回路を備える、ノイズ除去システム。
  2. 前記回路が、1つまたは複数のプロセッサであって、
    前記過渡ノイズを含む前記ECG信号の前記検出された部分をデジタル化するように、
    ノイズ除去されたECG信号を生成するために、線形位相フィルタまたはデジタル有限インパルス応答フィルタのうちの少なくとも1つを使用して、前記修正されたECG信号を精緻化するように、
    ディスプレイ上の出力を容易にするために前記ノイズ除去されたECG信号をアナログ信号に変換するように、かつ
    前記ディスプレイ上に提示するために前記ノイズ除去されたECG信号を出力するようにさらに構成される、1つまたは複数のプロセッサを備える、請求項1に記載のシステム。
  3. 前記ノイズ除去されたECG信号を前記アナログ信号に変換するように構成されたデジタル-アナログ変換器をさらに備える、請求項2に記載のシステム。
  4. 前記ブランキングすることが、前記過渡ノイズを含む前記ECG信号の前記検出された部分に対応するメモリ位置に記憶された値を一時的に除去することを含み、前記ブランキングされた部分を前記修正することが、補間を含み、前記補間が、前記メモリ位置の前記除去された値を置き換えるために修正された値を計算することを含む、請求項1から3のいずれか一項に記載のシステム。
  5. 前記ブランキングすることが、前記過渡ノイズを含む前記ECG信号の前記検出された部分に対応するメモリ位置に記憶された値を一時的に除去することを含み、前記ブランキングされた部分を前記修正することが、補間を含み、前記補間が、前記ブランキングする前の最後の値および前記ブランキングした後の最初の値を識別することと、前記メモリ位置の前記除去された値を前記メモリ位置の前記最後の値と前記最初の値との間の補間された値に置き換えることとを含む、請求項1から3のいずれか一項に記載のシステム。
  6. 前記回路が、前記最初の値および前記最後の値が50Hzまたは60Hzのライン周波数成分の影響を受けないことを確実にするために、前記ブランキングする前および前記ブランキングした後の期間の間前記50Hzまたは60Hzのライン周波数成分をフィルタ除去するようにさらに構成された1つまたは複数のプロセッサを備える、請求項5に記載のシステム。
  7. 前記ブランキングすることが、前記過渡ノイズを含む前記ECG信号の前記検出された部分に対応するメモリ位置に記憶された値を一時的に除去することを含み、前記ブランキングされた部分を前記修正することが、前記ブランキングする前の最後の既知の良好な値に前記除去された値を置き換えることを含む、請求項1から3のいずれか一項に記載のシステム。
  8. 前記回路が、サンプルアンドホールド回路を備える、請求項1に記載のシステム。
  9. さらに、生理学的パラメータ決定サブシステムであって、監視されている生理学的パラメータが、非一時的なコンピュータ可読媒体上の記憶された命令の実行時、前記患者に結合されるか、または前記患者内に配置される1つまたは複数のセンサから受信された前記生理学的パラメータを示す信号に少なくとも部分的に基づいて、閾値範囲外であるかどうかを決定するように構成される、生理学的パラメータ決定サブシステムをさらに備え、
    前記生理学的パラメータ決定サブシステムが、前記生理学的パラメータが前記閾値範囲外であることを決定した場合、前記刺激デバイスによる電磁刺激の適用は終了され、前記ノイズ除去システムは迂回され、
    前記生理学的パラメータ決定サブシステムが、前記生理学的パラメータが前記閾値範囲内にあることを決定した場合、前記刺激デバイスによる電磁刺激の適用は継続し、前記ECG信号は前記ノイズ除去システムによって処理される、請求項1から8のいずれか一項に記載のシステム。
  10. 刺激デバイスによる電気刺激の適用によって引き起こされる過渡ノイズを含む生理学的信号をノイズ除去するためのノイズ除去システムであって、前記ノイズ除去システムが、患者から前記生理学的信号を取得するように構成されたセンサに通信可能に結合され、前記ノイズ除去システムが、
    1つまたは複数のプロセッサであって、
    電気刺激が投与されていることを示す同期信号が電気刺激システムから受信されたときの時間期間に対応する前記生理学的信号の部分を識別することによって、前記前記過渡ノイズを含む前記生理学的信号の部分を検出するように、かつ
    前記過渡ノイズを含む前記生理学的信号の前記検出された部分をノイズ除去するように構成され、前記生理学的信号の前記検出された部分をノイズ除去することは、前記過渡ノイズを含む前記生理学的信号の前記検出された部分をブランキングすることと、過渡ノイズが低減された修正された生理学的信号を提供するために、前記ブランキングされた部分を修正することとを含む、1つまたは複数のプロセッサを備える、ノイズ除去システム。
  11. 前記1つまたは複数のプロセッサが、
    前記過渡ノイズを含む前記生理学的信号の前記検出された部分をデジタル化するように、
    ノイズ除去された生理学的信号を生成するために、線形位相フィルタまたはデジタル有限インパルス応答フィルタのうちの少なくとも1つを使用して前記修正された生理学的信号を精緻化するように、
    ディスプレイ上の出力を容易にするために、前記ノイズ除去された生理学的信号をアナログ信号に変換するように、かつ
    前記ディスプレイ上に提示するために前記ノイズ除去された生理学的信号を出力するようにさらに構成される、請求項10に記載のシステム。
  12. 前記ノイズ除去された生理学的信号を前記アナログ信号に変換するように構成されたデジタル-アナログ変換器をさらに備える、請求項11に記載のシステム。
  13. 前記ブランキングすることが、前記過渡ノイズを含む前記生理学的信号の前記検出された部分に対応するメモリ位置に記憶された値を一時的に除去することを含み、前記ブランキングされた部分を前記修正することが、補間を含み、前記補間が、前記メモリ位置の前記除去された値を置き換えるために修正された値を計算することを含む、請求項10から12のいずれか一項に記載のシステム。
  14. 前記ブランキングすることが、前記過渡ノイズを含む前記生理学的信号の前記検出された部分に対応するメモリ位置に記憶された値を一時的に除去することを含み、前記ブランキングされた部分を前記修正することが、補間を含み、前記補間が、前記ブランキングする前の最後の値および前記ブランキングした後の最初の値を識別することと、前記メモリ位置の前記除去された値を前記メモリ位置の前記最後の値と前記最初の値との間の補間された値に置き換えることとを含む、請求項10から12のいずれか一項に記載のシステム。
  15. 前記ブランキングすることが、前記過渡ノイズを含む前記生理学的信号の前記検出された部分に対応するメモリ位置に記憶された値を一時的に除去することを含み、前記ブランキングされた部分を前記修正することが、前記ブランキングする前の最後の既知の良好な値に前記除去された値を置き換えることを含む、請求項10から12のいずれか一項に記載のシステム。
  16. 前記生理学的信号が、心臓関連信号である、請求項10から15のいずれか一項に記載のシステム。
  17. 前記システムが、前記同期信号に基づいて開閉するように構成された1つまたは複数のスイッチを備える、請求項1から16のいずれか一項に記載のシステム。
  18. 前記出力を表示するように構成されたディスプレイを備える患者モニタと、
    前記刺激デバイスとをさらに備える、請求項1から17のいずれか一項に記載のシステム。
  19. 患者から得られた生理学的信号をノイズ除去する方法であって、前記生理学的信号が、前記患者内または前記患者に隣接して位置する電磁エネルギー源による電磁エネルギーの適用によって引き起こされる過渡ノイズを含み、前記方法が、
    前記過渡ノイズを含む前記生理学的信号の部分を検出することと、
    前記過渡ノイズを含む前記生理学的信号の前記検出された部分をブランキングすることと、
    前記生理学的信号を再構成された生理学的信号として再構成するために、前記過渡ノイズを含む前記生理学的信号の前記検出された部分を補間することとを含み、
    前記検出すること、ブランキングすること、および補間することが、非一時的なコンピュータ可読媒体に記憶された命令を実行する1つまたは複数のプロセッサによって実行される、方法。
  20. 前記生理学的信号が、心臓関連信号である、請求項19に記載の方法。
  21. 前記心臓関連信号が、ECG信号である、請求項20に記載の方法。
  22. 前記過渡ノイズを含む前記生理学的信号の部分を検出する前記ステップが、前記生理学的信号上に前記過渡ノイズを生成する可能性が高い電気組織調節システムから受信されたブランキングパルスに基づく、請求項19から21のいずれか一項に記載の方法。
  23. 前記ブランキングパルスが、前記電気組織調節システムによる電気神経調節療法の開始前、または開始とほぼ同時に受信される、請求項22に記載の方法。
  24. 前記過渡ノイズを有する前記生理学的信号の前記検出された部分をブランキングする前に、アナログ-デジタル変換器を使用して、前記過渡ノイズを有する前記生理信号の部分をデジタル化することと、
    ディスプレイ上での前記ノイズ除去された生理学的信号の出力を容易にするために、デジタル-アナログ変換器を使用して、前記ノイズ除去された生理学的信号をアナログ信号に変換することと、
    前記アナログ信号を前記ディスプレイに出力することとをさらに含み、
    前記ディスプレイが、患者モニタまたは中央監視システム上にある、請求項19から23のいずれか一項に記載の方法。
  25. 前記ブランキングすることが、前記過渡ノイズを有する前記生理学的信号の前記検出された部分に対応するメモリ位置の値を一時的に除去することを含み、前記補間することが、前記ブランキング中の前記除去された値を修正された値に置き換えることを含む、請求項19から24のいずれか一項に記載の方法。
  26. 生物のデジタル化された生体電位から過渡ノイズを除去するためのノイズ除去システムであって、前記過渡ノイズが、前記生物の体の一部の電気刺激と同期して生成され、前記システムが、1つまたは複数のプロセッサであって、非一時的なコンピュータ可読媒体に記憶された命令の実行時に、
    前記電気刺激のタイミングを示す同期信号を電気刺激システムから受信するように、
    前記受信された同期信号の受信に基づいて、前記デジタル化された生体電位から前記過渡ノイズを除去するように、かつ
    過渡ノイズのないデジタル化された生体電位を生成するために、前記デジタル化された生体電位において生成されたギャップを横切って補間するように構成される、1つまたは複数のプロセッサを備える、ノイズ除去システム。
  27. 前記デジタル化された生体電位が、ECG波形であり、
    前記電気刺激システムが、神経刺激装置であり、
    前記同期信号が、パルスを含む、請求項26に記載のシステム。
  28. 前記デジタル化された生体電位をノイズ除去することが、前記過渡ノイズを有する、前記デジタル化された生体電位の部分に対応するメモリ位置の値を除去することを含み、および/または
    前記ギャップを横切って補間することが、ノイズ除去された生体電位を生成するために、前記除去された値を修正された値に置き換えることを含む、請求項26に記載のシステム。
JP2021562115A 2019-05-06 2020-05-04 電気神経調節中に生理学的信号をノイズ除去するためのシステムおよび方法 Pending JP2022531658A (ja)

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