Patent ID: 9179853
Filing Date: 2015-11-10
Classification: A61B,A61N

Abstract:
1. An implantable cardiac system for monitoring or treating a patient's heart, the implantable cardiac system including at least a plurality of implantable electrodes and operational circuitry coupled to the electrodes for performing cardiac signal analysis, in which the operational circuitry is configured to perform a cardiac signal analysis comprising: sensing a signal using the implantable electrodes; detecting events in the sensed signal, the detected events separated by intervals; in a first method of estimating heart rate, averaging a set of intervals between detected events after analyzing the detected events and intervals to identify at least one of noise or overdetection, and calculating a first heart rate therefrom; in a second method of estimating heart rate, averaging a set of intervals between detected events after eliminating at least one interval using a set of interval selection rules, and calculating a second heart rate therefrom; and comparing the first heart rate to the second heart rate in order to analyze the patient's heart rhythm.