LEADLESS CARDIAC PACEMAKER DEVICE CONFIGURED TO PROVIDE INTRA-CARDIAC PACING

摘要

In an aspect of the invention, a pacemaker device configured to provide for an intra-cardiac pacing, the leadless pacemaker device comprising:a processing circuitry configured to generate ventricular pacing signals for stimulating ventricular, anda reception device for receiving a sensing signal indicative of an atrial activity, wherein the processing circuitry is configured to determine an atrial sense rate of atrial events derived from said sensing signal,wherein in case a valid atrial sense rate is determined, the processing circuitry is further configured to- determine a ventricular pacing rate according to the atrial sense rate based on a calculated atrial-ventricular (AV) delay,- Generating at least one ventricular pacing signal at the ventricular pacing rate,- determine a calculated ventricular-atrial delay (VA_calc) indicative of a time delay at which an atrial event (As) is predicted to occur following a prior ventricular event (Vs),- measure a true occurrence of a time delay at which an atrial event (As) occurs following a prior ventricular event (Vs) (VA_true) and determine a correction value (CV) based on a timing relation between VA_true and the calculated ventricular-atrial delay (VA_calc)- adjust said ventricular pacing rate based on the correction value (CV).