It is understood that American researchers have developed a wearable ultrasonic patch. It can non-invasively monitor arterial blood pressure at a depth of 4 cm below the skin to detect cardiovascular problems earlier and more accurately.
This patch monitors blood pressure changes in heart, lung, and critically ill patients in real time and continuously.
The wearable ultrasonic patch is a thin layer of elastic silicone with a so-called "island bridge" structure - a small array of electronic components (islands), each connected by a spring-shaped wire (bridge). Each island contains electrodes and devices called piezoelectric sensors that generate ultrasound when current is passed through.
It is understood that current forms of wearable devices can only be used to sense signals on or near the surface of the skin. This ultrasound technology can non-invasively track other vital signs and physiological signals deep in the body. Let the sensing range of wearable electronics enter the third dimension.
The working principle of medical ultrasound examination has a certain similarity with sonar. The ultrasonic wave is emitted into the human body. When it encounters the interface in the body, it will reflect and refract, and it may be absorbed and attenuated in human tissue. These signals provide doctors with a wealth of detailed information to assess their cardiovascular health and can be used to predict heart failure and determine if the blood supply is good.
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