Patent ID: 11867566
Assignee: WELCH ALLYN, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method of determining a core temperature of a patient, the method comprising:
sensing, by a first sensing element comprising a thermistor, an ambient temperature of an environment over a first time period;
sensing, by a second sensing element comprising an infrared temperature sensing element, a patient temperature over a second time period, wherein the first time period and the second time period at least partially overlap;
determining a first rate of change of the ambient temperature over the first time period;
determining a second rate of change of the patient temperature over the second time period;
determining a threshold rate of change;
selecting a first correction factor based at least in part on determining that the first rate of change exceeds the threshold rate of change;
determining the core temperature of the patient by applying the first correction factor to the second rate of change of the patient temperature in response to the first rate of change exceeding the threshold rate of change;
selecting a second correction factor based at least in part on determining that the first rate of change is less than the threshold rate of change; and
determining the core temperature of the patient by applying the second correction factor to the second rate of change of the patient temperature in response to the first rate of change being less than the threshold rate of change.