US 12,214,208 B2
Atrial tracking in an intracardiac ventricular pacemaker
Vincent E. Splett, Apple Valley, MN (US); Todd J. Sheldon, North Oaks, MN (US); Yong K. Cho, Excelsior, MN (US); Wade M. Demmer, Coon Rapids, MN (US); and Mark K. Erickson, Brooklyn Park, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,756.
Application 17/722,756 is a continuation of application No. 16/720,030, filed on Dec. 19, 2019, granted, now 11,305,126.
Application 16/720,030 is a continuation of application No. 15/280,538, filed on Sep. 29, 2016, granted, now 10,532,212, issued on Jan. 14, 2020.
Prior Publication US 2022/0323769 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/36 (2006.01); A61N 1/365 (2006.01); A61N 1/368 (2006.01); A61N 1/375 (2006.01); A61N 1/05 (2006.01); A61N 1/372 (2006.01)
CPC A61N 1/36578 (2013.01) [A61N 1/36542 (2013.01); A61N 1/36585 (2013.01); A61N 1/3682 (2013.01); A61N 1/3684 (2013.01); A61N 1/3756 (2013.01); A61N 1/056 (2013.01); A61N 1/37205 (2013.01); A61N 1/37512 (2017.08)] 20 Claims
OG exemplary drawing
 
1. A pacemaker, comprising:
a motion sensor configured to sense a motion signal; and
a control circuit coupled to the motion sensor and a pulse generator and configured to:
determine from the motion signal a timing of a ventricular diastolic event;
start a time period having an expiration time set based on the timing of the ventricular diastolic event; and
detect an atrial systolic event from the motion signal after the expiration time of the time period; and
the pulse generator configured to generate a first pacing pulse in response to the control circuit detecting the atrial systolic event.