US 12,350,071 B2
Contact detection for physiological sensor
Chad A. Bossetti, Springs, CO (US); Thomas J. Sullivan, San Jose, CA (US); Xiaoyu Guo, Santa Clara, CA (US); Paras Samsukha, Los Gatos, CA (US); and Anirban Chatterjee, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 2, 2024, as Appl. No. 18/653,893.
Application 18/653,893 is a continuation of application No. 17/821,433, filed on Aug. 22, 2022, granted, now 11,980,480.
Application 17/821,433 is a continuation of application No. 16/565,090, filed on Sep. 9, 2019, granted, now 11,478,193, issued on Oct. 25, 2022.
Claims priority of provisional application 62/729,590, filed on Sep. 11, 2018.
Prior Publication US 2024/0277293 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 5/24 (2021.01); A61B 5/30 (2021.01); A61B 5/304 (2021.01)
CPC A61B 5/6844 (2013.01) [A61B 5/24 (2021.01); A61B 5/681 (2013.01); A61B 5/7203 (2013.01); A61B 5/7228 (2013.01); A61B 5/7475 (2013.01); A61B 5/30 (2021.01); A61B 5/304 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
sensing circuitry configured to sense a physiological signal, the sensing circuitry configured to sense a first electrode and a second electrode;
a stimulation circuit configured to drive a stimulation signal on the first electrode; and
processing circuitry coupled to the sensing circuitry, the processing circuitry programmed to, while measuring the physiological signal using one or more signals corresponding to the first electrode, and using one or more signals corresponding to the second electrode:
in accordance with a determination that a first signal of the one or more signals corresponding to the first electrode measured by the sensing circuitry in response to driving the stimulation signal fails to meet one or more criteria, cease measuring the physiological signal.