MULTI-CHAMBER INTRACARDIAC PACING SYSTEM

摘要

The control module of a first pacemaker included in an implantable medical device system including the first pacemaker and a second pacemaker is configured to set a pacing escape interval in response to a far field pacing pulse sensed by the first pacemaker. The far field pacing pulse is a pacing pulse delivered by the second pacemaker. The pacing escape interval is allowed to continue without restarting the in response to a far field intrinsic event sensed by the first pacemaker during the pacing escape interval. The first pacemaker delivers a cardiac pacing pulse to the heart upon expiration of the pacing escape interval.

主权项

1. A medical device system, comprising
a first implantable pacemaker; and a second implantable pacemaker; the first implantable pacemaker comprising: a first sensing module configured to receive a first cardiac electrical signal via a pair of electrodes and sense from the cardiac electrical signal near field intrinsic cardiac events occurring in a first heart chamber, far field intrinsic events occurring in a second heart chamber different than the first heart chamber, and far field pacing pulses, the far field pacing pulses being pacing pulses delivered in the second heart chamber by the second implantable pacemaker; a first pulse generator coupled to the pair electrodes for delivering a cardiac pacing pulse to the first heart chamber; and a first control module configured to:
set a first pacing escape interval in response to a far field pacing pulse sensed by the first sensing module;permit the first pacing escape interval to continue without restarting the first pacing escape interval in response to a far field intrinsic event sensed by the first sensing module during the first pacing escape interval; andcontrol the pulse generator to deliver the cardiac pacing pulse to the first heart chamber upon expiration of the first pacing escape interval.