US 12,257,439 B2
Leadless cardiac pacemaker device configured to provide intra-cardiac pacing
Kurt Swenson, Dayton, OR (US); Shayan Guhaniyogi, Portland, OR (US); Ravi Kiran Kondama Reddy, Portland, OR (US); Christopher Jones, Oregon City, OR (US); Madeline Anne Midgett, Portland, OR (US); and R. Hollis Whittington, Portland, OR (US)
Assigned to BIOTRONIK SE & Co. KG, Berlin (DE)
Filed by BIOTRONIK SE & Co. KG, Berlin (DE)
Filed on Nov. 4, 2022, as Appl. No. 17/980,759.
Application 17/980,759 is a continuation of application No. 17/117,434, filed on Dec. 10, 2020, granted, now 11,529,521.
Claims priority of provisional application 62/948,854, filed on Dec. 17, 2019.
Prior Publication US 2023/0058678 A1, Feb. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/365 (2006.01); A61N 1/05 (2006.01); A61N 1/368 (2006.01); A61N 1/37 (2006.01); A61N 1/375 (2006.01)
CPC A61N 1/365 (2013.01) [A61N 1/056 (2013.01); A61N 1/3682 (2013.01); A61N 1/3706 (2013.01); A61N 1/37512 (2017.08); A61N 1/3756 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A leadless 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 tissue, and
a reception device for receiving a sensing signal indicative of an atrial activity, wherein the processing circuitry is configured to detect an atrial event derived from said sensing signal, wherein the atrial event is a valid atrial sense event, where a series of atrial events lie within a range for a normal atrial rate, and/or when the atrial rate variability is within a certain range indicating a regular atrial rhythm,
wherein in case a valid atrial sense event is detected, the processing circuitry is further configured to:
determine a ventricular pacing event according to the atrial event based on a calculated atrial-ventricular (AV) delay,
determine a calculated ventricular-atrial delay (VAcalc) 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 (VAtrue) at which an atrial event (As) occurs following a prior ventricular event (Vs) and determine a correction value (CV) based on a timing relation between VAtrue and the calculated ventricular-atrial delay (VAcalc), and
adjust said ventricular pacing timing based on the correction value (CV).