Patent ID: 7610084

Claim:
A method for classifying a sensed cardiac depolarization complex, comprising: sensing a plurality of depolarization waveforms resulting from a cardiac depolarization complex, wherein each of the plurality of sensed waveforms is sensed with a sensing channel having a different electrode configuration, and generating digital samples of the sensed waveforms over a defined period of time to result in a sample set for each sensed waveform; storing the sample set of each sensed waveform in a sensed sample array and a sample set of each corresponding waveform of a template depolarization complex in a template sample array; computing a multi-dimensional correlation between the sensed sample arrays and the corresponding template sample arrays; classifying the sensed depolarization complex is as being equivalent to the template complex if the multi-dimensional correlation indicates a specified degree of similarity; grouping samples of the sensed and template waveforms at a particular sampling time into a sensed complex vector and template complex vector, respectively; and, adding one or more parameter features to the sensed and template complex vectors, wherein a parameter feature is defined as the deviation from a mean value of a measurable parameter related to a cardiac depolarization complex.