US 11,786,739 B2
Ventricular sensing control in a cardiac pacing system
Maureen E. Lybarger, New Brighton, MN (US); Jian Cao, Shoreview, MN (US); Wade M. Demmer, Coon Rapics, MN (US); Michael W. Heinks, New Brighton, MN (US); Jean E. Hudson, Blaine, MN (US); Michael Kemmerer, Victoria, MN (US); James J. St. Martin, Blaine, MN (US); and Todd J. Sheldon, North Oaks, MN (US)
Assigned to Medtronic Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Aug. 18, 2020, as Appl. No. 16/995,965.
Claims priority of provisional application 62/888,570, filed on Aug. 19, 2019.
Prior Publication US 2021/0052895 A1, Feb. 25, 2021
Int. Cl. A61N 1/36 (2006.01); A61N 1/362 (2006.01); A61N 1/365 (2006.01); A61B 5/352 (2021.01)
CPC A61N 1/3624 (2013.01) [A61B 5/352 (2021.01); A61N 1/365 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A medical device, comprising:
a sensing circuit configured to:
sense a ventricular electrical signal;
set an R-wave sensing threshold;
receive an atrial event signal;
set a post-atrial time interval in response to the atrial event signal; and
generate an event time signal in response to the ventricular electrical signal being equal to or greater than the R-wave sensing threshold during the post-atrial time interval; and
a control circuit configured to:
determine a count of event time signals generated by the sensing circuit; and
adjust a ventricular sensing control parameter based on the count of event time signals.