US 12,082,926 B2
Optical sensor with multiple detectors or multiple emitters
Vikrant Sharma, Santa Ana, CA (US); and Mohammad Usman, Mission Viejo, CA (US)
Assigned to Masimo Corporation, Irvine, CA (US)
Filed by Masimo Corporation, Irvine, CA (US)
Filed on Jul. 19, 2021, as Appl. No. 17/379,756.
Claims priority of provisional application 63/135,933, filed on Jan. 11, 2021.
Claims priority of provisional application 63/060,868, filed on Aug. 4, 2020.
Prior Publication US 2022/0039707 A1, Feb. 10, 2022
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 5/145 (2006.01)
CPC A61B 5/14551 (2013.01) [A61B 5/0004 (2013.01); A61B 5/024 (2013.01); A61B 5/14532 (2013.01); A61B 5/6824 (2013.01); A61B 5/6826 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A noninvasive physiological sensor configured to attach to a finger of a user, the noninvasive physiological sensor comprising:
a body portion configured to be secured to a finger of a user, the body portion comprising:
a first portion;
a second portion positioned axially from the first portion, the second portion wider than the first portion; and
an intermediate portion positioned between the first portion and the second portion and connected between the first portion and the second portion, the intermediate portion narrower than the first portion and the second portion;
a first emitter configured to emit light of one or more wavelengths into tissue of the finger of the user when the noninvasive physiological sensor is in use, wherein the first emitter is configured to be operably positioned by the body portion at a first side of the finger when the body portion is configured to be secured to the finger, the first emitter arranged on the second portion; and
a plurality of detectors, each of the plurality of detectors configured to detect at least a portion of the emitted light after attenuation by the tissue of the finger of the user when the noninvasive physiological sensor is in use, wherein each of the plurality of detectors is configured to generate at least one signal responsive to the detected light, and wherein the plurality of detectors comprises:
a first detector configured to be operably positioned by the body portion at a second side of the finger that is opposite the first side of the finger when the body portion is configured to be secured to the finger such that the first detector and the first emitter are substantially aligned with one another; and
a second detector configured to be operably positioned by the body portion at a third side of the finger when the body portion is configured to be secured to the finger such that the second detector is offset approximately 90 degrees from the first emitter with respect to an axis extending through at least a portion of the body portion, the first detector and the second detector arranged in an array on the first portion.