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Apparatus for analyzing cardiac events

  • US 7,369,889 B2
  • Filed: 04/02/2004
  • Issued: 05/06/2008
  • Est. Priority Date: 04/24/2003
  • Status: Active Grant
First Claim
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1. An apparatus for analyzing cardiac events, comprising:

  • a feature extraction unit, supplied with an electrocardiogram, said feature extraction unit configured for deriving features of cardiac events from said electrocardiogram and determining a feature vector, by a wavelet transform operating on said electrogram, describing waveform characteristics of cardiac events in said electrogram; and

    a clustering unit provided with said feature vector, said clustering unit configured for determining a distance between said feature vector and corresponding cluster feature vectors and assigning a cardiac event in said electrogram to a particular cluster that results in a minimum distance, as long as said minimum distance is less than a predetermined threshold value, and generating an output signal that identifies the particular cluster to which the cardiac event has been assigned.

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