Patent ID: 6456878
Filing Date: 2002-09-24
Classification: A61N

Abstract:
In a cardiac pacemaker, a method of delivering first and second pacing pulses to the heart comprising the steps of:locating first and second pace/sense electrodes at first and second spaced apart sites of the heart; sensing spontaneous cardiac depolarizations traversing the first pace/sense electrode and providing a first sense event signal; sensing spontaneous cardiac depolarizations traversing the second pace/sense electrode and providing a second sense event signal; upon provision of either a first or a second sense event signal, delivering a first pacing pulse to the first pace/sense electrode to pace the heart at the first site; upon provision of either a first or second sense event signal, commencing and timing out a triggered pacing delay; and at the time-out of the triggered pacing delay, delivering a second pacing pulse to the second pace/sense electrode to pace the heart at the second site, whereby a synchronized depolarization of the heart in a predetermined sequence is effected by the first and second pacing pulses regardless of whether the sense event signal originates from a spontaneous cardiac depolarization at the first or second spaced apart sites.