Continuous Core Body Temperature Monitoring for Heatstroke Alert via a Wearable In-Ear Thermometer

An innovative in-ear wearable device accurately measures core body temperature (CBT) to enhance early detection of heatstroke.

• Continuous CBT monitoring through the cochlea may provide timely heatstroke alerts in high-temperature and high-humidity environments.
• The device's design includes a negative temperature coefficient thermometer, a flexible precision circuit, and a compact Bluetooth module.
• Preliminary human trials show the device's accuracy in CBT measurement is comparable to rectal thermometry and superior to surface body temperature measurements.
• Long-term experiments indicate the device can effectively detect rapid increases in CBT, potentially allowing for timely preventive actions against heatstroke.
• The device is lightweight at 1.3 g, with dimensions of 27 mm × 18 mm and a maximum diameter of 5 mm, ensuring portability and comfort.

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