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Apparatus and Method of Arrhythmia Detection in a Subcutaneous Implantable Cardioverter/Defibrillator

  • US 20080221632A1
  • Filed: 05/16/2008
  • Published: 09/11/2008
  • Est. Priority Date: 11/21/2001
  • Status: Active Grant
First Claim
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1. A method of cardiac signal analysis comprising:

  • capturing an electrical signal from electrodes implanted in a patient;

    amplifying the captured electrical signal to generate an amplifier output;

    using the amplifier output as follows;

    in a first channel;

    narrow-band filtering the amplifier output;

    detecting cardiac events using the narrow-band filtered amplifier output; and

    identifying whether and when cardiac events occur;

    in a second channel separate from the first channel;

    wide-band filtering the amplifier output; and

    performing morphological analysis using the wide-band filtered amplifier output;

    using the detected cardiac events and morphological analysis to determine whether the patient is in need of cardiac stimulus; and

    if the patient is in need of cardiac stimulus, delivering cardiac stimulus to the patient.

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