公开(公告)号：US11504536B2

公开(公告)日：2022-11-22

申请号：US16587871

申请日：2019-09-30

Applicant: Medtronic, Inc.

Inventor： Ronald A. Drake ,  Melissa G. T. Christie ,  Kathryn Hilpisch ,  Bushan K. Purushothaman ,  William Schindeldecker

IPC: A61N1/365 ,  A61N1/375

Abstract: An intracardiac ventricular pacemaker includes a pulse generator for delivering ventricular pacing pulses, an impedance sensing circuit, and a control circuit in communication with the pulse generator and the impedance sensing circuit. The pacemaker is configured to produce an intraventricular impedance signal, detect an atrial systolic event using the intraventricular impedance signal, set an atrioventricular pacing interval in response to detecting the atrial systolic event, and deliver a ventricular pacing pulse in response to the atrioventricular pacing interval expiring.