US 12,029,589 B2
System and method for characterizing cardiac arrhythmia
Conor Heneghan, Campbell, CA (US); Subramaniam Venkatraman, Lafayette, CA (US); and Alexandros Pantelopoulos, El Cerrito, CA (US)
Assigned to FITBIT, LLC, San Francisco, CA (US)
Filed by Fitbit, LLC, San Francisco, CA (US)
Filed on Feb. 21, 2022, as Appl. No. 17/676,597.
Application 17/676,597 is a continuation of application No. 16/556,891, filed on Aug. 30, 2019, granted, now 11,253,202.
Application 16/556,891 is a continuation of application No. 15/356,383, filed on Nov. 18, 2016, granted, now 10,398,381, issued on Sep. 3, 2019.
Claims priority of provisional application 62/257,600, filed on Nov. 19, 2015.
Prior Publication US 2022/0249026 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 5/026 (2006.01); A61B 5/363 (2021.01)
CPC A61B 5/721 (2013.01) [A61B 5/002 (2013.01); A61B 5/0022 (2013.01); A61B 5/0261 (2013.01); A61B 5/4818 (2013.01); A61B 5/6814 (2013.01); A61B 5/6815 (2013.01); A61B 5/6824 (2013.01); A61B 5/742 (2013.01); A61B 5/746 (2013.01); A61B 5/363 (2021.01)] 21 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining a photoplethysmography (PPG) signal for a user based on data from one or more optical sensors of an apparatus;
generating PPG waveform data based, at least in part, on the PPG signal;
detecting a cardiac arrhythmia event based, at least in part, on the PPG waveform data; and
responsive to detecting the cardiac arrhythmia event based, at least in part, on the PPG waveform data, thereafter, prompting the user to perform an electrocardiogram (ECG) measurement.