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Signal Analysis in Implantable Cardiac Treatment Devices

  • US 20110307024A1
  • Filed: 08/19/2011
  • Published: 12/15/2011
  • Est. Priority Date: 09/26/2006
  • Status: Active Grant
First Claim
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1. A method of cardiac signal analysis in an implantable cardiac system comprising a plurality of implantable electrodes for sensing signals from implanted locations coupled to circuitry for analysis of sensed signals, the method comprising:

  • capturing a cardiac signal by the use of the plurality of electrodes;

    detecting a cardiac event;

    conditioning a portion of the cardiac signal associated with the cardiac event; and

    analyzing at least some parts of the conditioned portion of the cardiac signal to determine whether the patient is likely experiencing a malignant cardiac condition;

    wherein the step of conditioning a portion of the cardiac signal associated with the cardiac event includes sampling the cardiac signal to generate a number of samples and comparing a selected sample to a sample threshold and, if the sample magnitude does not exceed the sample threshold, replacing the sample with a different value.

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