Researchers have made it possible to measure blood pressure with a mobile phone with a small 10 clamp
In an interesting and practical initiative, a group of engineers have used a simple and cheap clamp to measure blood pressure from a smartphone with the help of a smartphone camera and flash. fingertip provide This device can easily make blood pressure measurement accessible to many poor countries.
Engineers at the University of California, San Diego, a small clamp measuring approx 10 cm have made that can reliably measure your blood pressure without the need for large devices. this product It does not need to be calibrated and unlike other pressure measuring devices, it does not need to be worn around the arm.
To use this device, the user just needs to put his fingertip on the clamp and follow the instructions provided in the special app. Self-clamping with 3D printer It is made and placed on the camera and flash of the phone.
How is blood pressure measured with this clip?
The optical structure in this method is similar to pinhole cameras. When pressure is applied, flash light shines on the fingertip and the resulting light is transmitted to the camera through a small pinhole-sized channel to produce an image similar to a red circle be made
The diameter and brightness of this circle provides details about the pressure and the amount of blood in the fingertip of the person, and then an algorithm measures the blood pressure based on the received data.
In the tests that were conducted to evaluate the accuracy of this product’s performance, the researchers asked the help of 24 volunteers to perform the test, and finally it was found that this device can perform Similar with blood pressure measuring devices around the arm.
Researchers believe that the current design of this device can be used on different types of phones; Although this method has only been tested on one phone. In the future, they will seek to make this mechanism easier to use for the elderly and improve its performance accuracy for different skin tones.