Patent ID: 6615089
Filing Date: 2003-09-02
Classification: A61N

Abstract:
A cardiac pacemaker, comprising:a plurality of sensing/pacing channels, each such channel comprising an electrode, a pulse generator for outputting pacing pulses, and a sense amplifier for detecting sense signals; a controller for controlling the operation of the pulse generators in response to sensed events and lapsed time intervals and in accordance with a programmed pacing mode; an evoked response sensing channel comprising a sense amplifier for sensing an evoked response generated after a pacing pulse; and, a switching circuit for switching an input of the evoked potential sensing channel to a selected electrode of the sensing/pacing channels, wherein the controller is programmed to perform a capture verification test at a selected time to test a selected sensing/channel for presence or loss of capture, the capture verification test being performed by sensing whether an evoked response occurs during a capture detection window following the output of a pacing pulse.