US 12,232,888 B2
Multi-site noninvasive measurement of a physiological parameter
Vikrant Sharma, Santa Ana, CA (US); Philip Perea, Aliso Viejo, CA (US); and Prashanth Iyengar, Irvine, CA (US)
Assigned to Masimo Corporation, Irvine, CA (US)
Filed by Masimo Corporation, Irvine, CA (US)
Filed on Oct. 20, 2022, as Appl. No. 18/048,365.
Application 18/048,365 is a continuation of application No. 15/824,983, filed on Nov. 28, 2017, granted, now 11,504,058.
Claims priority of provisional application 62/429,458, filed on Dec. 2, 2016.
Prior Publication US 2023/0172545 A1, Jun. 8, 2023
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/024 (2006.01); A61B 5/145 (2006.01)
CPC A61B 5/6814 (2013.01) [A61B 5/0024 (2013.01); A61B 5/0205 (2013.01); A61B 5/742 (2013.01); A61B 5/0075 (2013.01); A61B 5/02416 (2013.01); A61B 5/14532 (2013.01); A61B 5/1455 (2013.01); A61B 5/6826 (2013.01); A61B 5/6829 (2013.01); A61B 2562/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of calculating a measurement of a target physiological parameter, the method comprising:
using a plurality of light emitters of a first sensor, emitting light of at least two wavelengths into tissues of a first measurement site of a patient;
using one or more electronic light detectors of the first sensor, detecting the light attenuated by the tissues of the first measurement site and outputting a first signal based on the light detected at the first measurement site;
using a plurality of light emitters of a second sensor, emitting light of at least two wavelengths into tissues of a second measurement site of a patient, the second measurement site different from the first measurement site;
using one or more electronic light detectors of the second sensor, detecting the light attenuated by the tissues of the second measurement site and outputting a second signal based on the light detected at the second measurement site; and
using one or more signal processors that are in electrical communication with the first and second sensors;
combining the first signal and the second signal into combined sensor data,
processing the combined sensor data to obtain and analyze combinations of features of the first signal and features of the second signal, the combinations comprising location information or body tissue information of the first measurement site and the second measurement site, and
determining the measurement of the target physiological parameter based on analysis of the combinations of features.