WEARABLE DEVICE TO DETERMINE THE CENTRAL BODY TEMPERATURE OF THE USER, METHOD FOR DETERMINING THE CENTRAL BODY TEMPERATURE OF THE USER USING THE WEARABLE DEVICE AND SYSTEM COMPRISING THE WEARABLE DEVICE Russian patent published in 2023 - IPC A61B5/01 A61B5/295 A61B5/531 

FIELD: medicine.

SUBSTANCE: group of inventions relates to a wearable device used to determine the central body temperature of the user, a system with this device and a method for determining the central body temperature of the user. The device comprises a core temperature sensor, a skin temperature sensor, a bioimpedance sensor, a photoplethysmogram sensor and is configured to determine the core body temperature of the user based on a set of measurement data collected from the sensors. The internal temperature sensor is designed to measure the temperature inside a wearable device. The skin temperature sensor is configured to measure the surface temperature of the user's skin. The bioimpedance sensor is designed to measure the impedance parameter of the user's body. The photoplethysmogram sensor is configured to measure two photoplethysmogram signals with different wavelengths. The device is additionally configured to: predict the parameters of the microclimate around the wearable device, parameters of the morphology of the user's body, parameters of the peripheral microcirculation of the user's body, the central temperature of the user's body. Predicting microclimate parameters comprises predicting a local ambient temperature around the wearable device based on temperatures inside the wearable device, and then predicting a local temperature between the wearable device and the user's skin based on the local ambient temperature and the surface temperature of the user's skin. The user's body morphology parameters are predicted based on the user's profile data and the user's body impedance parameter previously entered into the wearable device. The parameters of the peripheral microcirculation of the user's body are predicted based on the perfusion parameters of the user's body, calculated from the photoplethysmogram signals. The user's central body temperature is predicted based on the parameters of the microclimate around the wearable device, parameters of the user's body morphology, and parameters of the peripheral microcirculation of the user's body. When performing the method, the temperature inside the device is measured. The surface temperature of the user's skin is measured. The user's body impedance parameter is measured. Photoplethysmogram signals are measured. The user's core body temperature is measured. The system comprises a wearable device and a remote server and/or cloud storage, a communication channel for transmitting data between the wearable device and the remote server and/or cloud storage.

EFFECT: accuracy of determining the user's core body temperature using a wearable device is improved.

32 cl, 10 dwg, 4 tbl