Patent ID: 9694186
Date: 2017-07-04
CPC Classifications: A61N

Claim:
1. A method for adjusting a pacing rate in a dual-chamber, leadless pacemaker system implanted in a heart, the method comprising: sensing, with a sensor in a leadless atrial pacemaker implanted in an atrium of the heart, a first far-field R-wave indicating a depolarization of a ventricle of the heart; determining, with a processor in the leadless atrial pacemaker and based on the sensed first far-field R-wave that an intrinsic atrial contraction rate of the atrium is faster than a ventricular contraction rate; transmitting a first signal from the atrial pacemaker to a leadless ventricular pacemaker implanted in a ventricle of the heart to increase a ventricular pacing rate of the ventricular pacemaker; receiving the transmitted first signal with the ventricular pacemaker; increasing the ventricular pacing rate, based on the received first signal; determining, with the ventricular pacemaker, that no signal has been received from the atrial pacemaker for a predetermined amount of time; and decreasing the ventricular pacing rate.