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Methods and apparatus for classifying cardiac events with an implantable cardiac device

  • US 5,810,739 A
  • Filed: 12/19/1996
  • Issued: 09/22/1998
  • Est. Priority Date: 05/09/1996
  • Status: Expired due to Term
First Claim
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1. An implantable cardiac device for monitoring a cardiac signal from a patient'"'"'s heart via leads connected to said heart, processing a segment of said cardiac signal that corresponds to a cardiac event, and classifying said cardiac event as being one of a plurality of possible types of cardiac events, each such possible type of cardiac event being characterized by a separate set of reference values, the implantable cardiac device comprising:

  • sensing circuitry connected to said leads for measuring said cardiac signals;

    buffer means for storing said cardiac signals;

    means for generating a set of feature values for said cardiac signal segment; and

    means for classifying said cardiac event by comparing said set of feature values to said sets of reference values to determine the closest match to said set of feature values from among said sets of reference values.

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