Patent ID: 8929977
Filing Date: 2015-01-06
Classification: A61B,A61N

Abstract:
1. An implantable cardiac stimulus device (ICSD) comprising a canister housing operational circuitry and a lead electrode assembly including a plurality of electrodes disposed thereon, with the lead electrode assembly configured to couple to the canister to electrically couple the operational circuitry to the electrodes on the lead electrode assembly, the operational circuitry being configured to perform a method of cardiac signal analysis comprising: the operational circuitry detecting a series of events; the operational circuitry identifying intervals between consecutive detected events; the operational circuitry using morphology analysis to identify overdetections from the series of events; whenever an overdetection is identified, the operational circuitry combining an interval preceding the overdetection and an interval following the overdetection to form a combined interval; following the morphology analysis to identify overdetections, the operational circuitry certifying combined intervals and intervals that are not adjacent to overdetections; the operational circuitry estimating a cardiac rate using only certified intervals; and the operational circuitry using the estimated cardiac rate to make therapy decisions.