JP2007512043A5 - - Google Patents

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Publication number
JP2007512043A5
JP2007512043A5 JP2006539552A JP2006539552A JP2007512043A5 JP 2007512043 A5 JP2007512043 A5 JP 2007512043A5 JP 2006539552 A JP2006539552 A JP 2006539552A JP 2006539552 A JP2006539552 A JP 2006539552A JP 2007512043 A5 JP2007512043 A5 JP 2007512043A5
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Prior art keywords
signal
physiological signal
adaptive filter
velocity
artifact
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JP2006539552A
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JP2007512043A (ja
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Priority claimed from US10/704,366 external-priority patent/US7220235B2/en
Priority claimed from US10/786,359 external-priority patent/US20050101889A1/en
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Publication of JP2007512043A publication Critical patent/JP2007512043A/ja
Publication of JP2007512043A5 publication Critical patent/JP2007512043A5/ja
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Claims (28)

  1. 胸部圧迫適用中の生理学的信号を取得し、
    そこから胸部圧迫の速度に関する情報を決定可能なセンサーの出力を取得し、
    前記胸部圧迫に起因する前記生理学的信号中の少なくとも一つの信号アーチファクトを低減するために前記速度に関する前記情報を使用することを備える、胸部圧迫適用中の生理学的信号を解析する方法を実施するように適合された装置
  2. 前記生理学的信号はECG信号である請求項1に記載の装置
  3. 前記生理学的信号はIPGである請求項1に記載の装置
  4. 前記生理学的信号はICG信号である請求項1に記載の装置
  5. 前記生理学的信号はパルス酸素濃度信号である請求項1に記載の装置
  6. 前記センサーは速度センサーであり、前記速度に関する前記情報は前記速度センサーから決定される請求項1または2に記載の装置
  7. 前記センサーは加速度計であり、前記速度に関する前記情報は前記加速度計の出力の積分から決定される請求項1または2に記載の装置
  8. 前記生理学的信号中の少なくとも一つの信号アーチファクトを低減するために前記速度に関する前記情報を使用することは、前記生理学的信号と前記速度との時間整合を含む請求項1または2に記載の装置
  9. 前記生理学的信号中の少なくとも一つの信号アーチファクトを低減するために前記速度に関する前記情報を使用することは、胸部圧迫アーチファクトを低減するように調節された適応フィルタを使用することを含む請求項1または2に記載の装置
  10. 前記方法が、アーチファクトの低減された前記生理学的信号を処理して心室細動が存在するか否かを判定する心室細動検出アルゴリズムを更に備える請求項1または2に記載の装置
  11. 前記方法が、胸部圧迫が行われた時を検出し自動的に前記適応フィルタを始動する前処理工程を更に備える請求項9に記載の装置
  12. 前記方法が、前記アルゴリズムが心室細動の存在を推定した場合に除細動ショックの伝達を可能にすることを更に備える請求項10に記載の装置
  13. 前記適応フィルタに供給した生理学的信号と、前記適応フィルタによるアーチファクト低減後の生理学的信号との差を表す差分信号が生成される、請求項9に記載の装置
  14. 前記差分信号は前記生理学的信号中のアーチファクト量を表す測度となる請求項13に記載の装置
  15. 前記方法が、前記生理学的信号の以後の処理の修正に前記差分信号を使用する工程を更に備える請求項14に記載の装置
  16. 前記アーチファクト量が第一の閾値を超えていることを前記差分信号が示す場合、前記心室細動検出アルゴリズムは、アーチファクトの影響に対する耐性を高めるように修正される請求項15に記載の装置
  17. 前記アーチファクト量が前記第一の閾値より高い第二の閾値を超えていることを前記差分信号が示す場合、前記心室細動検出アルゴリズムの使用は停止される請求項16に記載の装置
  18. 前記差分信号に対するスペクトル解析を行い、前記スペクトル解析の結果に基づいて前記生理学的信号のフィルタリングを調整する請求項15に記載の装置
  19. 適応フィルタに供給するに先立ち、前記速度信号は正規化前処理を受ける請求項9に記載の装置
  20. 前記適応フィルタはFIRフィルタを含む請求項に記載の装置
  21. 前記適応フィルタはゼロ次フィルタを含む請求項20に記載の装置
  22. 前記適応フィルタは前記生理学的信号の推定値によって動的に制御される係数を備える請求項9に記載の装置
  23. 前記適応フィルタはフィルタ出力と測定された生理学的信号との差が閾値を超えているときに自動的にリセットされる機能を備える請求項9に記載の装置
  24. 自動的なリセットはステップサイズを動的に変更してフィルタの収束と安定性との関係を改善する機能を備える請求項23に記載の装置
  25. 前記方法が、前記生理学的信号と前記速度信号に対して行われ、これら二つの信号を圧迫に対して整合させる時間整合処理を更に備える請求項1または2に記載の装置
  26. 前記方法が、前記時間整合処理の出力に対して、前記生理学的信号と前記速度信号との間の誤差を低減させる適応フィルタ処理を行うことを更に備え請求項25に記載の装置
  27. 前記適応フィルタはカルマンフィルタを含む請求項9に記載の装置
  28. 前記適応フィルタは適応等化を用いる請求項9に記載の装置
JP2006539552A 2003-11-06 2004-10-26 胸部圧迫アーチファクトを除去するための生理学的信号処理への胸部速度の使用 Pending JP2007512043A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/704,366 US7220235B2 (en) 2003-06-27 2003-11-06 Method and apparatus for enhancement of chest compressions during CPR
US10/786,359 US20050101889A1 (en) 2003-11-06 2004-02-24 Using chest velocity to process physiological signals to remove chest compression artifacts
PCT/US2004/035568 WO2005046431A2 (en) 2003-11-06 2004-10-26 Removing chest compression artifacts from physiological signals

Related Child Applications (1)

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JP2012001509A Division JP2012091021A (ja) 2003-11-06 2012-01-06 胸部圧迫適用中の生理学的信号を解析する装置

Publications (2)

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JP2007512043A JP2007512043A (ja) 2007-05-17
JP2007512043A5 true JP2007512043A5 (ja) 2007-12-13

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JP2006539552A Pending JP2007512043A (ja) 2003-11-06 2004-10-26 胸部圧迫アーチファクトを除去するための生理学的信号処理への胸部速度の使用

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US (7) US20050101889A1 (ja)
EP (1) EP1686891A4 (ja)
JP (1) JP2007512043A (ja)
WO (1) WO2005046431A2 (ja)

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