US 12,076,142 B2
Physiological monitoring system for measuring oxygen saturation
Vivek Venugopal, Santa Clara, CA (US); Ueyn L. Block, Menlo Park, CA (US); Brian R. Land, Woodside, CA (US); Paul D. Mannheimer, Los Altos, CA (US); and Albert E. Cerussi, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jun. 23, 2023, as Appl. No. 18/213,506.
Application 18/213,506 is a division of application No. 17/018,850, filed on Sep. 11, 2020, granted, now 11,717,197.
Claims priority of provisional application 62/907,445, filed on Sep. 27, 2019.
Prior Publication US 2023/0329597 A1, Oct. 19, 2023
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61L 31/02 (2006.01); H01L 31/0203 (2014.01); H01L 31/0216 (2014.01); H01L 31/173 (2006.01)
CPC A61B 5/14552 (2013.01) [A61B 5/7278 (2013.01); A61L 31/028 (2013.01); H01L 31/0203 (2013.01); H01L 31/02164 (2013.01); H01L 31/173 (2013.01); A61B 5/681 (2013.01); A61B 2562/0242 (2013.01); A61B 2562/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wearable device, comprising:
a housing;
a display viewable through a front side of the housing;
a skin-facing cover on a back side of the housing and formed from an optically transparent material, and having:
an interior surface;
an exterior surface; and
a set of ledges bordering a set of openings, the set of openings extending through the skin-facing cover from the interior surface to the exterior surface;
a set of windows disposed in the set of openings and abutting the set of ledges;
a set of optical barriers positioned between the set of windows and the set of ledges; and
a set of photodetectors disposed within the housing and configured to receive light through the set of windows.