Amid recent reports of blood pressure devices not being true, a team of doctors from Jerusalem have produced a new oscillometry apparatus to measure it accurately.
The device, developed by a group of researchers in the Jerusalem College of Technology and the Shaare Zedek Medical Center in Israel, uses photoplethysmography technique, a pressure cuff wrapped around the arm and an electro-optic probe on the finger.
The finger probe acts as pulse oximeter that emits light into the finger and the detector measures the light transmitted through the finger. “The transmitted light displays pulses at the heart rate, as a result of cardiac-induced blood volume changes in the finger tissue,” explained lead author Meir Nitzen.
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