Patent ID: 11883179
Assignee: MEDTRONIC, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 5:
6. The device of claim 5, wherein the cardiac electrical signal includes a cardiac electrical signal segment, wherein the cardiac electrical signal segment indicates a sequence of cardiac events, and wherein the control module is configured to implement the beat-based morphology analysis to monitor the consistency of the morphology of beats by:
comparing a morphology of a first cardiac event of the sequence of cardiac events with a morphology of each cardiac event of one or more cardiac events following the first cardiac event in the sequence of cardiac events;
classifying each of the comparisons as a match or non-match, wherein each cardiac event is classified as match when a matching score is greater than or equal to a matching score threshold and otherwise is classified as non-match;
detecting that a number of subsequent cardiac events having morphologies that match the morphology of the first cardiac event of the cardiac electrical signal segment is less than a threshold number of cardiac events;
characterizing the cardiac electrical signal segment as shockable when gross morphology criteria are met and the number of subsequent cardiac events having morphologies that match the morphology of the first cardiac event of the cardiac electrical signal segment is less than the threshold number of cardiac events; and
detecting the arrhythmia requiring the electrical stimulation therapy based characterizing the cardiac electrical signal segment as shockable,
and
wherein the control module is configured to control the therapy module to deliver the electrical stimulation therapy to the patient based on detecting the arrhythmia requiring the electrical stimulation therapy.