Method and device for measuring blood pressure upon radial artery pulse wave conduction time

Abstract

The invention is suitable for the technical field of biological medicines and medical facilities, and provides a method and a device for measuring blood pressure upon radial artery pulse wave conduction time. The method comprises the following steps: acquiring a human body radial artery pulse wave signal through a photoelectric sensor, and performing filtering amplification and AD (analog-digital) conversion on the human body radial artery pulse wave signal through a microprocessor to finally obtain a human body radial artery pulse wave signal with low noise and obvious feature points; performing frequency-domain transformation, wavelet processing and second order difference on the obtained human body radial artery pulse wave signal to determine the feature points of a human body radial artery pulse wave form; calculating an accurate numerical value of the human body radial artery pulse wave conduction time; establishing a regression equation for measuring the blood pressure to finally obtain blood pressure values. According to the method and the device provided by the invention, the blood pressure only needs to be measured at a single point, so that the processing difficulty of the signal is reduced, a measuring process is simplified, and the comfort of blood pressure measurement is improved; meanwhile, the accuracy of blood pressure measurement is improved through method improvements, and moreover, the blood pressure can be continuously monitored for a long time.

Description

technical field [0001] The invention belongs to the technical field of biomedicine and medical equipment, and in particular relates to a method and device for measuring blood pressure based on radial artery pulse wave transit time. Background technique [0002] Cardiovascular and cerebrovascular diseases are one of the most serious diseases threatening human beings in the world today, and its morbidity and mortality have leapt to the first place in the world. With the birth of high-tech medical equipment, although it has brought good news to the treatment of diseases, the resulting high medical expenses have brought enormous pressure to families and society. It is extremely necessary to find a suitable technology to alleviate this contradiction. The human pulse wave originates from the heartbeat and is an important sign of human life. Therefore, the pulse wave signal contains extremely rich physiological and pathological information of the cardiovascular system. Cardiovascu...

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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for measuring blood pressure based on the pulse wave transit time of the radial artery, aiming at solving the problem that the prior art needs to calculate the pulse transit time through two points, the signal acquisition is difficult, the detection value is large, and the detection result error big problem

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