US 12,290,368 B2
Detection of atrial fibrillation
Ken Persen, Irvine, CA (US); Ross Grady Baker, Jr., Irvine, CA (US); Lucy Zhuang, Irvine, CA (US); and Jon Kaneshiro, Irvine, CA (US)
Assigned to HEARTBEAM, INC., Santa Clara, CA (US)
Filed by HEARTBEAM, INC., Santa Clara, CA (US)
Filed on Aug. 12, 2022, as Appl. No. 17/887,160.
Application 17/887,160 is a continuation of application No. 16/368,568, filed on Mar. 28, 2019, granted, now 11,412,972.
Claims priority of provisional application 62/649,530, filed on Mar. 28, 2018.
Prior Publication US 2022/0386929 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/361 (2021.01); A61B 5/024 (2006.01); A61B 5/0245 (2006.01)
CPC A61B 5/361 (2021.01) [A61B 5/02438 (2013.01); A61B 5/02455 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A computer program product,
said computer program product being configured to be in communication with a PPG sensor,
said computer program product comprising a non-transitory, machine-readable medium storing instructions which, when executed by at least one programmable processor, caused at least one programmable processor to perform operations comprising:
receiving photoplethysmographic (PPG) signal data communicated by the PPG sensor of a wearable device worn by a user;
determining a plurality of heartbeats from at least a portion of the PPG signal data;
determining a heart rhythm type based on at least the plurality of heartbeats;
determining whether the heart rhythm type includes Atrial Fibrillation (AF) comprising utilization of an occupancy metric, a distance metric, and an interval variability metric, classifying regions corresponding to particular heart rhythm types as set apart by one or more discrimination planes in a three-dimensional space defined by the occupancy metric, the distance metric, and the interval variability metric, wherein AF is identified on an AF side of at least one of the one or more discrimination planes; and
displaying, when an AF is detected, a detection alert at the wearable device.