US 11,052,258 B2
Methods and systems for detecting atrial contraction timing fiducials within a search window from a ventricularly implanted leadless cardiac pacemaker
Keith R. Maile, New Brighton, MN (US); Jeffrey E. Stahmann, Ramsey, MN (US); Michael J. Kane, St. Paul, MN (US); Benjamin J. Haasl, Forest Lake, MN (US); Krzysztof Z. Siejko, Maple Grove, MN (US); Allan Charles Shuros, St. Paul, MN (US); William J. Linder, Golden Valley, MN (US); and Brendan Early Koop, Ham Lake, MN (US)
Assigned to CARDIAC PACEMAKERS, INC., St. Paul, MN (US)
Filed on Nov. 29, 2018, as Appl. No. 16/204,982.
Claims priority of provisional application 62/593,703, filed on Dec. 1, 2017.
Prior Publication US 2019/0168008 A1, Jun. 6, 2019
Int. Cl. A61N 1/375 (2006.01); A61N 1/39 (2006.01); A61N 1/36 (2006.01); A61N 1/365 (2006.01); A61N 1/37 (2006.01); A61B 5/00 (2006.01); A61N 1/368 (2006.01); A61N 1/372 (2006.01)
CPC A61N 1/37512 (2017.08) [A61N 1/36167 (2013.01); A61N 1/36507 (2013.01); A61N 1/36542 (2013.01); A61N 1/36564 (2013.01); A61N 1/36578 (2013.01); A61N 1/3706 (2013.01); A61N 1/3756 (2013.01); A61N 1/39622 (2017.08); A61B 5/686 (2013.01); A61N 1/3682 (2013.01); A61N 1/36585 (2013.01); A61N 1/37252 (2013.01); A61N 1/3925 (2013.01); A61N 1/3968 (2013.01)] 16 Claims
OG exemplary drawing
1. A leadless cardiac pacemaker (LCP) configured to sense cardiac activity and to deliver pacing therapy to a ventricle of a patient's heart, the LCP comprising:
a housing;
a first electrode secured relative to the housing and exposed to the environment outside of the housing;
a second electrode secured relative to the housing and exposed to the environment outside of the housing;
a sensing module secured relative to the housing and responsive to the environment outside of the housing, the sensing module including a pressure measurement module and an electrogram measurement module;
a control module operatively coupled to the first electrode, the second electrode, and the sensing module, the control module is configured to:
identify a window of time during each of one or more cardiac cycles, wherein the window of time has a duration that is less than an entire cardiac cycle;
process information gathered during the window of time by the pressure measurement module and the electrogram measurement module to identify an atrial event of the patient's heart during a cardiac cycle, wherein a p-wave signal detecting an atrial activation by the electrogram measurement module is given a higher priority than a pressure signal detecting an atrial kick by the pressure measurement module; and
deliver a ventricular pacing pulse to the patient's heart via the first electrode and the second electrode, wherein the ventricular pacing pulse is delivered at a time that is based, at least in part, on the identified atrial event.