Patent ID: 9008760
Filing Date: 2015-04-14
Classification: A61B,A61N

Abstract:
1. An off-line method for analyzing cardiac electrogram data, comprising: retrieving an electrogram from a memory location; identifying a first-channel group of candidate beats from at least a first channel of the electrogram; identifying a second-channel group of candidate beats from at least a second channel of an electrogram; evaluating whether each first-channel beat candidate is near a second-channel beat candidate; for each first-channel beat candidate near a second-channel beat candidate, comparing the amplitude of the first-channel beat candidate with an amplitude of a previous beat and an amplitude of a next beat on the first electrogram channel and removing first-channel beat candidates that have an amplitude that is outside of a first pre-determined range from either the amplitude of the previous beat or the amplitude of the next beat; and for each first-channel beat candidate near a second-channel beat candidate, comparing the amplitude of the first-channel beat candidate with an amplitude of a previous beat candidate and an amplitude of a next beat candidate on the first electrogram channel and removing first-channel beat candidates that have an amplitude that is outside of a second pre-determined range from either the amplitude of the previous beat or the amplitude of the next beat candidate; wherein a first-channel beat candidate is near a second-channel beat candidate if it occurs within a first time interval from the second-channel beat candidate.