US 11,890,103 B2
Identifying ECG signals having the same morphology
Elad Nakar, Timrat (IL); Amir Ben-Dor, Kibbutz Hamapil (IL); and Noam Seker Gafni, Irvine, CA (US)
Assigned to Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed by Biosense Webster (Israel) Ltd., Yokneam (IL)
Filed on Nov. 10, 2021, as Appl. No. 17/523,244.
Application 17/523,244 is a continuation of application No. 16/550,594, filed on Aug. 26, 2019, granted, now 11,213,240.
Application 16/550,594 is a continuation of application No. 15/646,344, filed on Jul. 11, 2017, granted, now 10,433,749, issued on Oct. 8, 2019.
Claims priority of provisional application 62/372,969, filed on Aug. 10, 2016.
Prior Publication US 2022/0061731 A1, Mar. 3, 2022
Int. Cl. A61B 5/35 (2021.01); A61B 5/00 (2006.01); A61B 5/316 (2021.01); A61B 5/361 (2021.01); A61B 5/363 (2021.01); A61B 5/364 (2021.01); A61B 5/366 (2021.01); A61B 5/287 (2021.01)
CPC A61B 5/35 (2021.01) [A61B 5/316 (2021.01); A61B 5/361 (2021.01); A61B 5/363 (2021.01); A61B 5/364 (2021.01); A61B 5/366 (2021.01); A61B 5/7246 (2013.01); A61B 5/287 (2021.01); A61B 5/7264 (2013.01); A61B 5/743 (2013.01); A61B 2505/05 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
processing a first set of electrocardiograph (ECG) signals taken over a single heartbeat of a human subject, the first set of ECG signals being received over a plurality of channels;
receiving reference annotations of the first set of ECG signals;
selecting a subset of the first set of ECG signals captured at a point in time with a window of interest (WOI) time period around the reference annotations of the first set of ECG signals, the subset of signals each having a morphology pattern within the WOI;
storing the morphology patterns of the subset of ECG signals;
receiving continuous sets of ECG signals taken over a plurality of heartbeats of the human subject, the continuous sets of ECG signals being received over the plurality of channels, each of the continuous sets of ECG signals having a morphology pattern within a time period equal to the WOI time period for each heartbeat;
performing a correlation between the stored morphology patterns of the first set of ECG signals and the morphology patterns of each of the continuous sets of ECG signals for each heartbeat;
generating for each heartbeat of the plurality of heartbeats a correlation coefficient that is a measure of a goodness of fit between geometries of the first set of ECG signals and each of the continuous sets of ECG signals; and
identifying each heartbeat of the plurality of heartbeats having a correlation coefficient that exceeds a threshold coefficient as having been caused by an arrhythmia.