Copyright © Françoise Herrmann
Need a new thermometer? Withings’ connected Thermo takes 2000 measurements per second, using 16 infrared sensors, with clinically-tested accuracy. Temperature is taken on the forehead, more precisely using the proprietary Hot Spot Sensor to measure peak temperature of core blood running through the temporal artery.
Just sweep Thermo across the forehead temporal area. A color-coded core body temperature will be displayed in just two seconds on the handle, and on the Withings Thermo app. An app where additional information might be entered, such as reminders, symptoms and medications taken, once Thermo has been paired to a smartphone. Up to eight family members can use a connected Withings Thermo.
The Withings connected core body temperature thermometer is a patented invention. The European patent EP3397930B1, titled Compact forehead thermometer, was awarded on January 27th, 2021 to several inventors: Thomas Bedetti, Roger Yu, Edouard Wauttier, Nadine Buard, Cédric Hutchings and Capucine Bodin. The patent was assigned to Withings SAS.
Below, the patent Figure 1, showing the invention thermometer in use, together with an image of the marketed Withings connected Thermo and app. Specifically, the patent Figure 1 depicts an individual using the thermometer device 10. The user is applying the thermometer to the temporal area TA of the forehead FH. The position of the thermometer 10 defines a sensing region SR corresponding to the path of the temporal artery. The device is activated using the switch 8. Two seconds, and 4000 computed measurements later, the body core temperature BCT appears on the display 9, and on the app (not shown).
. Body core temperature (BCT) is calculated, according to a formula that infers the maximum value of the captured measurements. The processor performs corrections taking into account room temperature and the temperature of the device 10. The formula also takes into account vascularization (the amount of blood diffusion) in the region sensed, using the measurements' standard deviation (SD). In cases of high vascularization, measurements capture many warm areas, thus resulting in a low SD. Conversely, in cases of low vascularization, the SD is high.
The Youtube video below is a Withings advertisement for Thermo the hottest thermometer with the coolest technology.
The abstract of the invention is also included below.
A thermometer device (10) for temporal artery area measurement, configured to be used in a skin-touching stationary position, comprising an elongated body (1) and a front portion (4) having an end border (6) arranged on a sensing plane (P), an array of N infra-red sensors (2), with N greater than 8, a sensing region (SR) extending in the sensing plane over an area denoted SRA, at a distance denoted LF from a plane P2 containing the infra-red sensors, the sensing region being encompassed within the border of the front end, an optical lens (3), interposed between the infra-red sensors and the sensing region, to deviate light rays, wherein LF2 < K x SRA, with K =3. [Abstract EP3397930B1]
Reference
Withings Thermometer
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