US 11,701,051 B2
Method and system for detecting arrhythmias in cardiac activity
Diming Cao, Valley Village, CA (US); and Fady Dawoud, Studio City, CA (US)
Assigned to Pacesetter, Inc., Sylmar, CA (US)
Filed by Pacesetter, Inc., Sylmar, CA (US)
Filed on Feb. 4, 2021, as Appl. No. 17/167,149.
Claims priority of provisional application 62/991,101, filed on Mar. 18, 2020.
Prior Publication US 2021/0290140 A1, Sep. 23, 2021
Int. Cl. A61B 5/00 (2006.01); A61B 5/35 (2021.01); A61B 5/353 (2021.01); A61B 5/352 (2021.01); G16H 50/30 (2018.01); A61B 5/355 (2021.01); A61B 5/363 (2021.01); A61B 5/361 (2021.01)
CPC A61B 5/35 (2021.01) [A61B 5/352 (2021.01); A61B 5/353 (2021.01); A61B 5/355 (2021.01); G16H 50/30 (2018.01); A61B 5/361 (2021.01); A61B 5/363 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A system for detecting arrhythmias in cardiac activity, comprising:
memory configured to store specific executable instructions;
one or more processors configured to execute the specific executable instructions for:
obtaining first and second far field cardiac activity (CA) data sets over primary and secondary sensing channels, respectively, in connection with a series of beats;
detecting candidate atrial features from the second CA data set;
identifying ventricular features from the first CA data set;
utilizing the ventricular features to separate beat segments within the second CA data set;
automatically iteratively analyzing the beat segments by:
overlaying an atrial activity search window with the second CA data set; and
determining whether one or more of the candidate atrial features occur within the atrial activity search window;
adjusting an atrial sensitivity profile based on whether the atrial activity search window includes the one or more of the candidate atrial features; and
detecting atrial events based on the atrial sensitivity profile.