It is not very accurate to measure blood pressure with a bracelet. The bracelet adopts photoelectric sensor, which can estimate blood pressure, and then process the data collected by ECG signal to get blood pressure value. Auscultation is a common method to measure blood pressure in medicine. Auscultation uses an inflatable cuff wrapped around the upper arm to transmit pressure to the brachial artery and adjust the pressure in the cuff.

Some professionals have analyzed that no matter which measurement principle is adopted, with the existing technology, smart bracelets can not accurately measure blood pressure. Smart bracelet, a new thing, does not belong to medical devices, and there is no relevant testing standard in China. Dr. Wang Guofu said that the measurement results of smart bracelets are for reference only, and can never replace sphygmomanometer as the basis for diagnosis and treatment. Because for patients with hypertension, doctors will have different medication schemes for different blood pressure values.

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Legal listing and illegal sales

Only sphygmomanometers registered by China China Food and Drug Administration (CFDA) can be legally marketed in China [1]? .

On the contrary, any blood pressure measurement product that is not registered by China China Food and Drug Administration (CFDA) is illegal to sell in China, regardless of whether the manufacturer claims that its products are medical devices.

Accuracy of sphygmomanometer

Strictly speaking, all sphygmomanometers registered by China Food and Drug Administration (CFDA) are accurate.