US 12,285,616 B2
Systems, devices, and methods for electromechanical sensing and mapping
N. Parker Willis, Atherton, CA (US)
Assigned to EBR SYSTEMS, INC., Sunnyvale, CA (US)
Filed by EBR Systems, Inc., Sunnyvale, CA (US)
Filed on Jul. 13, 2022, as Appl. No. 17/863,735.
Application 17/863,735 is a continuation of application No. 16/637,130, granted, now 11,433,243, previously published as PCT/US2018/044858, filed on Aug. 1, 2018.
Claims priority of provisional application 62/542,741, filed on Aug. 8, 2017.
Prior Publication US 2022/0347482 A1, Nov. 3, 2022
Prior Publication US 2024/0139523 A9, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/365 (2006.01); A61N 1/02 (2006.01); A61N 1/372 (2006.01); A61B 5/00 (2006.01); A61B 5/11 (2006.01); A61B 5/35 (2021.01)
CPC A61N 1/36578 (2013.01) [A61N 1/025 (2013.01); A61N 1/37217 (2013.01); A61B 5/1102 (2013.01); A61B 5/1126 (2013.01); A61B 5/35 (2021.01); A61B 5/7278 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for tracking and/or determining cardiac motion, comprising:
tracking a location of an acoustic receiver-converter throughout a cardiac cycle relative to cardiac tissue;
creating a motion profile of the receiver-converter based on the tracked location;
using the motion profile in one or more of the following steps—
(a) normalizing the motion profile with electrocardiogram (EKG) data,
(b) mapping a cardiac motion of the cardiac tissue based on the motion profile, and/or
(c) determining a magnitude of a motion of the receiver-converter through the cardiac cycle based on the motion profile and correlating the magnitude of the motion of the receiver-converter to changes in ejection fraction; and
delivering, via the receiver-converter electrical energy to the cardiac tissue based at least in part on (a), (b), and/or (c).