US 12,458,295 B2
System and method for correcting for errors dependent upon spectral characteristics of tissue
Scott J. Mcgonigle, Loanhead (GB); Jacob D. Dove, Lafayette, CO (US); Clark R. Baker, Jr., Newman, CA (US); Keith A. Batchelder, Boulder, CO (US); Christopher J. Meehan, Denver, CO (US); David M. VandeRiet, Lafayette, CO (US); Chekema N. Prince, Morganville, NJ (US); and Linden A. Reustle, Milliken, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 3, 2022, as Appl. No. 17/958,778.
Claims priority of provisional application 63/251,341, filed on Oct. 1, 2021.
Prior Publication US 2023/0103378 A1, Apr. 6, 2023
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/72 (2013.01) [A61B 5/14551 (2013.01); A61B 2560/0223 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A medical monitoring system, comprising:
a sensor comprising:
a light emitter to emit light; and
a light detector to detect the light; and
a monitor comprising:
a port to communicatively couple to the sensor to receive a sensor signal from the sensor, wherein the sensor signal is based on the light detected by the light detector;
a display;
monitor processing circuitry; and
a monitor memory comprising first instructions that, when executed by the monitor processing circuitry, cause the monitor processing circuitry to:
determine a physiological parameter based on the sensor signal;
determine one or more input signals based on the sensor signal, wherein the one or more input signals comprise a ratio of direct current (DC) components;
determine a correction factor based on the ratio of DC components; and
adjust the physiological parameter based on the correction factor.