Patent ID: 7277754
Filing Date: 2007-10-02
Classification: A61N,Y10S

Abstract:
1. A cardiac rhythm management device, comprising: one or more sensing channels for sensing intrinsic cardiac activity; a subcutaneous ECG channel incorporating a subcutaneous electrode for generating an electrogram referred to as a subcutaneous ECG signal; a pacing channel for pacing a cardiac chamber; a controller for controlling the delivery of pacing pulses in accordance with a programmed mode and recording electrograms from a sensing channel; wherein the controller is programmed to remove the pacing artifact from an electrogram generated by the subcutaneous ECG channel and recorded during a paced cardiac cycle by subtracting a pacing pulse template from the recorded electrogram, wherein the pacing pulse template is an electrogram recorded when a pace is delivered to a cardiac chamber while the chamber is refractory.