Blood Pressure Monitoring at Your Fingertips: Super Low-Cost Smartphone Attachment — Engineers have developed a |
ady showing comparable results to blood pressure cuffs in early tests, is set to be commercialized by Billion Labs Inc.
Prototype of the blood pressure monitoring clip. The user presses on the clip and a custom smartphone app guides the user on how hard and long to press during the measurement. Credit: Digital Health Lab / UC San Diego Prototype of the blood pressure monitoring clip. The user presses on the clip and a custom smartphone app guides the user on how hard and long to press during the measurement. Credit: Digital Health Lab / UC San Diego
The smartphone app extracts two main pieces of information from the red circle. By looking at the size of the circle, the app can measure the amount of pressure that the user’s fingertip applies. And by looking at the brightness of the circle, the app can measure the volume of blood going in and out of the fingertip. An algorithm converts this information into systolic and diastolic blood pressure readings.
While the team has only proven the solution on a single smartphone model, the clip’s current design theoretically should work on other phone models, said Xuan.
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