US 12,076,569 B2
Medical device and method for controlling pacing interval to promote mechanical heart chamber synchrony
Wade M. Demmer, Coon Rapids, MN (US); Alexander R. Mattson, St. Paul, MN (US); Todd J. Sheldon, North Oaks, MN (US); and Zhongping Yang, Woodbury, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Jul. 20, 2022, as Appl. No. 17/813,925.
Application 17/813,925 is a continuation of application No. 16/833,965, filed on Mar. 30, 2020, granted, now 11,420,067.
Claims priority of provisional application 62/830,020, filed on Apr. 5, 2019.
Prior Publication US 2022/0355118 A1, Nov. 10, 2022
Int. Cl. A61N 1/365 (2006.01); A61N 1/368 (2006.01); A61N 1/37 (2006.01); A61N 1/39 (2006.01)
CPC A61N 1/36592 (2013.01) [A61N 1/36578 (2013.01); A61N 1/3684 (2013.01); A61N 1/3706 (2013.01); A61N 1/39622 (2017.08)] 21 Claims
OG exemplary drawing
 
1. A medical device comprising:
a motion sensor configured to sense a motion signal;
a therapy delivery circuit configured to generate ventricular pacing pulses; and
a control circuit configured to:
determine a first feature of a first ventricular systolic event signal of the motion signal following a first ventricular pacing pulse of the ventricular pacing pulses;
determine a synchrony metric based on at least the determined first feature of the first ventricular systolic event signal;
determine that the synchrony metric does not meet a threshold; and
in response to the synchrony metric not meeting the threshold, adjust a pacing interval for scheduling a second ventricular pacing pulse of the ventricular pacing pulses generated by the therapy delivery circuit.