Easy 'blood pressure measurement' is possible with an ultra-low price smartphone attachment of 14 yen per piece
A research team at the University of California, San Diego has announced a device `` BPClip '' that can measure blood pressure using a smartphone camera. This attachment, which can monitor blood pressure in conjunction with an app, can be manufactured for about 80 cents (about 110 yen), and in the future, mass production will reduce the cost to 10 cents (about 14 yen) per piece. outlook.
Ultra-low-cost mechanical smartphone attachment for no-calibration blood pressure measurement | Scientific Reports
Super Low-cost Smartphone Attachment Brings Blood Pressure Monitoring to Your Fingertips
https://today.ucsd.edu/story/super-low-cost-smartphone-attachment-brings-blood-pressure-monitoring-to-your-fingertips
BPClip is used by attaching it to the camera part of the smartphone as follows.
To take your blood pressure, hold your phone at heart level and press your index finger against the recess on the back of the attachment.
One of the features of BPClip is its extremely low price. 'Because of the low cost, the clips can be distributed to people who can't make regular visits to the clinic,' says Edward Wang, an engineering professor at the University of California, San Diego. I can pass it on,' he said.
BPClip is low cost because it uses your smartphone's camera and flashlight, eliminating the need for expensive parts such as electronics and sensors.
The mechanism is as follows. When the user presses their finger against the back of the clip, the smartphone's light shines on the fingertip and the light is reflected on the camera as a red circle. A spring is built into the clip, and the user can press the finger with moderate strength according to the instructions of the app.
After that, the app measures the user's strength from the size of the red circle, and the amount of blood at the fingertip from
Another feature is that it requires no calibration and has high accuracy. When measuring blood pressure using a cuff wrapped around the arm, it is necessary to adjust the device after measuring blood pressure with the cuff, but BPClip does not use a cuff, so there is no need to calibrate.
“Our device is a calibration-free system, which means you can get reliable blood pressure readings just by using our device without having to touch another blood pressure monitor,” Wang said. said.
When the research team tested BPClip on 24 volunteers at the University of California, San Diego Medical Center, the results were the same as the blood pressure readings.
Allison Moore, co-author of the paper, said, ``Since standard sphygmomanometers are difficult to wear correctly, this device may make it easier for elderly people to self-monitor their blood pressure.'' increase.
The research team has only tried BPClip on Google Pixel 4, but theoretically it can be used on any model. In the future, Mr. Wang and his colleagues plan to improve the technology so that it is easier to use, especially for the elderly, and to check the accuracy with different skin tones.
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