• Home
  • Science
  • Science News
  • New Low Cost Smartphone Attachment, Custom App to Monitor Blood Pressure at User’s Fingertip

New Low-Cost Smartphone Attachment, Custom App to Monitor Blood Pressure at User’s Fingertip

The researchers estimate that the cost of the clip could be as low as 10 cents (Rs. 0.7) apiece when manufactured at scale.

New Low-Cost Smartphone Attachment, Custom App to Monitor Blood Pressure at User’s Fingertip

Photo Credit: Unsplash/ TheRegistri

The clip utilises a smartphone's camera and flash to monitor blood pressure

Highlights
  • The technology could help manage conditions such as hypertension
  • The clip does not need to be calibrated to a cuff
  • The clip developed by researchers at the University of California
Advertisement

Scientists have developed a simple, low-cost clip that uses a smartphone's camera and flash to monitor blood pressure at the user's fingertip. The clip developed by researchers at the University of California (UC) San Diego, US, works with a custom smartphone app and currently costs about 80 cents (Rs. 5.6) to make.

The researchers estimate that the cost could be as low as 10 cents (Rs. 0.7) apiece when manufactured at scale.

The technology, described in the journal Scientific Reports, could help make regular blood pressure monitoring easy, affordable and accessible to people in resource-poor communities, they said.

It could benefit older adults and pregnant women, for example, in managing conditions such as hypertension, according to the researchers.

"We have created an inexpensive solution to lower the barrier to blood pressure monitoring,” said study first author Yinan Xuan, a Ph.D. student at UC San Diego.

"Because of their low cost, these clips could be handed out to anyone who needs them but cannot go to a clinic regularly," said study senior author Edward Wang, a professor at UC San Diego and director of the Digital Health Lab.

Another key advantage of the clip is that it does not need to be calibrated to a cuff, the researchers said.

"This is what distinguishes our device from other blood pressure monitors,” said Wang.

Other cuffless systems being developed for smartwatches and smartphones, he explained, require obtaining a separate set of measurements with a cuff so that their models can be tuned to fit these measurements.

"Our is a calibration-free system, meaning you can just use our device without touching another blood pressure monitor to get a trustworthy blood pressure reading," Wang said.

To measure blood pressure, the user simply presses on the clip with a fingertip. A custom smartphone app guides the user on how hard and long to press during the measurement.

The clip is a 3D-printed plastic attachment that fits over a smartphone's camera and flash. It features an optical design similar to that of a pinhole camera. When the user presses on the clip, the smartphone's flash lights up the fingertip.

That light is then projected through a pinhole-sized channel to the camera as an image of a red circle. A spring inside the clip allows the user to press with different levels of force.

The harder the user presses, the bigger the red circle appears on the camera.

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.

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.

The researchers tested the clip on 24 volunteers from the UC San Diego Medical Center. Results were comparable to those taken by a blood pressure cuff.

“Using a standard blood pressure cuff can be awkward to put on correctly, and this solution has the potential to make it easier for older adults to self-monitor blood pressure," said study co-author Alison Moore, from UC San Diego School of Medicine.


Samsung Galaxy A34 5G was recently launched by the company in India alongside the more expensive Galaxy A54 5G smartphone. How does this phone fare against the Nothing Phone 1 and the iQoo Neo 7? We discuss this and more on Orbital, the Gadgets 360 podcast. Orbital is available on Spotify, Gaana, JioSaavn, Google Podcasts, Apple Podcasts, Amazon Music and wherever you get your podcasts.
Affiliate links may be automatically generated - see our ethics statement for details.
Comments

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who'sThat360 on Instagram and YouTube.

Further reading: Smartphone, Smartphone Camera
Boat Airdopes Genesis TWS Earbuds With Up to 54 Hours of Battery Life Launched: All Details
Share on Facebook Gadgets360 Twitter Share Tweet Snapchat Share Reddit Comment google-newsGoogle News
 
 

Advertisement

Follow Us
© Copyright Red Pixels Ventures Limited 2024. All rights reserved.
Trending Products »
Latest Tech News »