Calibration-free cuff-less blood pressure measurement

December 02, 2019 //By Julien Happich
blood pressure
Developed by Leman Micro Devices (LMD) for blood pressure measurement, the V-Sensor uses the same principle as a cuff but acts on the fingertip.

Its V-Sensor module instructs the user to press harder or softer to occlude the arteries of the tip of the index finger and detects it optically using a pulse oximeter. The V-Sensor is small enough and cheap enough to be built into every mobile phone and is fully engineered for production in smartphone quantities. Its accuracy for both Systolic and Diastolic blood pressure measurement complies with international standard ISO 81060-2: mean error under 5 mmHg and standard deviation under 8 mmHg. With no personal calibration, V-Sensor has demonstrated accuracy for systolic blood pressure (SBP) of mean error -0.4 mmHg, standard deviation 7.2 mmHg, and for diastolic blood pressure (DBP) of mean error -0.2 mmHg, standard deviation 6.0 mmHg, both well within the deviation allowed by the ISO standard.

Leman Micro Devices - www.leman-micro.com


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