Smartphone Case Prototype Monitors Blood Pressure

Blood Pressure
Image Credit : Today

Scientists developed a smartphone case capable of monitoring blood pressure, according to a study published on March 10, 2018.

A team from Michigan State University created an easy process of detecting blood pressure. They developed a smartphone case that detects blood pressure by pressing ones finger onto it.
The smartphone case prototype is a 1-cm-thick case attached to the back of a standard smartphone, linked to an app on the same phone. The case is integrated with a sensor unit, which consists of an optical sensor stacked on top of a force sensor.

A user is required to hold the phone/case at heart level, pressing the tip of their index finger against the sensor unit. This enables the case to communicate with the app via Bluetooth, with the help of an onscreen display to guide the user.

This device takes the same amount of time as a conventional arm cuff reading would take, while the sensors proceed to measure the person’s systolic and diastolic blood pressure via the transverse palmer arch artery in the fingertip.
The app helps calculate an average blood pressure based on multiple successive readings, further boosting its accuracy. Further research is being conducted to improve the accuracy of the system, along with streamlining the hardware.

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