Researchers at UC San Diego have made it easier to continuously monitor blood pressure. Instead of strapping on an arm cuff that feels like your circulation is getting cut off, this wearable patch is non-invasive and clinically validated.

The patch is a soft and stretchy device, about the size of a postage stamp, that adheres to the skin. When worn on the forearm, it offers precise, real-time readings of blood pressure deep within the body. The patch is made of a silicone elastomer that houses an array of small piezoelectric transducers sandwiched between stretchable copper electrodes. The transducers transmit and receive ultrasound waves that track changes in the diameter of blood vessels, which are then converted into blood pressure values.

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