Patent ID: 11911179
Assignee: MEDICI TECHNOLOGIES LLC
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 13:
14. A method for determining the current hydration status of a user, comprising:
(a) acquiring a signal from a wearable sensor nonobtrusive to the activities of daily life, where the sensor is configured to detect changes in blood volume in a measurement region of the user, where the changes are indicative of opening and closing of the user's aortic valve, while the user is in one or more distinct postures;
(b) providing a hydration determination model configured to determine the hydration status of the user from the signal determined at one or more postures, wherein the hydration determination model is a deep learning model with multiple layers of weights;
(c) using the hydration determination model to determine the current hydration status of the user;
(d) communicating the current hydration status to the user;
(e) further comprising providing a posture determination system configured to determine the user's posture and maintenance of the posture by the user during the acquisition of the signal, and wherein the hydration determination system is configured to determine a first ejection time and a first interbeat interval at a first posture, and a second ejection time and a second interbeat interval at a second posture, and is configured to determine the hydration status from the first and second ejection times and the first and second interbeat intervals and the first and second postures.