Israeli researchers have developed a miniature sensor that could eventually allow people to monitor their blood pressure continuously without the need for an inflatable cuff.
The technology, developed by scientists at the Technion Israel Institute of Technology, combines light, ultrasound and artificial intelligence to measure blood pressure through a small wearable device.
The research, published in the journal Nature Communications, was led by Professor Amir Rosenthal and Professor Daniel Lange, alongside doctoral student Gil Gelbert.
The sensor uses pulses of light to generate ultrasound waves inside an artery, measuring changes in its diameter with each heartbeat. AI-based models then analyse the measurements to estimate blood pressure.
During initial tests, the system captured arterial measurements at a rate of 100 times per second.
Unlike some existing cuffless monitoring technologies, the device uses a single miniature sensor and is relatively tolerant of changes in positioning, potentially making it easier to incorporate into smartwatches and medical patches.
The researchers said continuous monitoring could provide a more detailed picture of blood pressure fluctuations throughout the day, particularly for people with cardiovascular conditions.
However, the technology remains at the proof-of-concept stage and requires further testing before it can be used clinically or replace conventional blood pressure monitors.
To get more Israel news, click here to sign up for our free Israel Briefing newsletter.