Hydration monitor
First Claim
Patent Images
1. A hydration monitor comprising a temperature sensor for measuring a subject'"'"'s core body temperature and a processor, the processor being arranged to accept measurements from the temperature sensor and calculate a hydration level in dependence on changes in the measured core body temperature by the following formula:
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[(core body temperature current−
core body temperature normal)×
subject'"'"'s weight]/(a value between 0.10°
C. and 0.23°
C.×
100).
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Accused Products
Abstract
A hydration monitor includes a temperature sensor (20; 65) for measuring a subject'"'"'s core body temperature and a processor (30). The processor is arranged to accept measurements from the temperature sensor (20; 65) and calculate a hydration level in dependence on changes in the measured core body temperature.
57 Citations
16 Claims
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1. A hydration monitor comprising a temperature sensor for measuring a subject'"'"'s core body temperature and a processor, the processor being arranged to accept measurements from the temperature sensor and calculate a hydration level in dependence on changes in the measured core body temperature by the following formula:
[(core body temperature current−
core body temperature normal)×
subject'"'"'s weight]/(a value between 0.10°
C. and 0.23°
C.×
100).- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of measuring hydration of a subject wherein the following steps are performed with a hydration monitor having a processor:
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a. measuring an initial core body temperature of the subject; b. measuring a subsequent current core body temperature of the subject; c. subtracting the initial core body temperature from the subsequent core body temperature, thereby obtaining a difference; d. multiplying the difference by the subject'"'"'s weight using the processor, thereby obtaining a multiplied difference; e. dividing the multiplied difference by a value between 0.10°
C. and 0.23°
C., thereby obtaining an indication of the subject'"'"'s hydration level;f. providing output indicative of the subject'"'"'s hydration level from the hydration monitor to the subject. - View Dependent Claims (13)
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14. A portable hydration monitor including:
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a. a wearable temperature sensor having; (1) an earpiece worn on the ear for measuring a subject'"'"'s core body temperature via the subject'"'"'s tympanic membrane, and (2) a transmitter configured to communicate said measured core body temperature; and b. a remote unit to be carried or worn by the subject and including a receiver, a processor, and an output device wherein; (1) the receiver is configured to receive the communicated core body temperature from the transmitter and communicate the received core body temperature to the processor, (2) the processor is configured to; i. calculate the subject'"'"'s hydration level from the measured core body temperature in substantially real time, and ii. cause an indication of the hydration level to be output via the output device. - View Dependent Claims (15, 16)
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Specification