Wearable sensor monitors oxygen levels through the skin

The new wearable sensor measures tissue oxygenation through the skin. The device can be used for permanent

control of the oxygen level in the human body for use in medicine and sports.

The wireless device is very simple tooperation, and the data is transmitted wirelessly. The authors of the development note that it will be especially useful for remote monitoring of oxygen levels outside of medical facilities.

The device consists of a body (it was printed on3D printer) a small sensor head and an adhesive film for measuring oxygen. Electronic components process the data from the sensor and allow the device to send records via Bluetooth or Wi-Fi.

Scientists have used machine learning tothe system accurately measured oxygen levels under various conditions. This approach also allowed the researchers to account for photobleaching, the tendency of light-excited materials to gradually lose their ability to emit light.

Researchers tested the deviceattaching it to the forelimb of a Yorkshire pig. When a tourniquet was applied to the elbow joint, the sensor detected a drop in oxygen (due to decreased blood flow). The measurements were in excellent agreement with those of the commercial reference sensor. However, they did not depend on changes in temperature, humidity, or other environmental factors. According to the authors of the development, this makes the sensor practical for use outside the laboratory.

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