US 11,864,893 B2
Oxygen sensor calibration
Jacob D. Dove, Lafayette, CO (US); Søren Aasmul, Holte (DK); William S. Smith, Wheat Ridge, CO (US); David J. Miller, Austin, TX (US); and Jesper Svenning Kristensen, Virum (DK)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Jun. 9, 2021, as Appl. No. 17/343,362.
Claims priority of provisional application 63/074,763, filed on Sep. 4, 2020.
Prior Publication US 2022/0071517 A1, Mar. 10, 2022
Int. Cl. A61B 5/1495 (2006.01); A61B 5/145 (2006.01); A61B 5/20 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/1495 (2013.01) [A61B 5/14503 (2013.01); A61B 5/14507 (2013.01); A61B 5/14542 (2013.01); A61B 5/207 (2013.01); A61B 5/6853 (2013.01); A61B 2560/0223 (2013.01); A61B 2560/0252 (2013.01); A61B 2560/0257 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by processing circuitry and from an oxygen sensor, an ambient air signal indicative of an oxygen partial pressure of ambient air;
receiving, by the processing circuitry and from an atmospheric pressure sensor, an atmospheric pressure sensor signal indicative of atmospheric pressure;
determining, by the processing circuitry and based on the atmospheric pressure sensor signal, the oxygen partial pressure of the ambient air;
determining, by the processing circuitry and based at least in part on the oxygen partial pressure of the ambient air and the ambient air signal, one or more calibration parameters;
calibrating, by the processing circuitry and based on the one or more calibration parameters, the oxygen sensor;
receiving, by the processing circuitry and from the oxygen sensor, a signal indicative of an oxygen partial pressure of a fluid; and
determining, by the processing circuitry and based on the signal indicative of the oxygen partial pressure of the fluid and the one or more calibration parameters, a calibrated oxygen partial pressure of the fluid.