Dual-PPG (Photoplethysmography)-based blood pressure measuring method and device

Abstract

The invention relates to a dual-PPG (Photoplethysmography)-based blood pressure measuring method and device. The method comprises the following steps: penetrating human tissues by using projection light, wherein the influence factor of the light absorption of the human tissues can be obtained according to a Beer-Lambert law: log(I0 / I)=epsilonCl; reflecting the change of blood volume through a PPG signal; calculating the blood pressure by using PTT (Push to Talk). The method and the device have the advantages that self-detection can be realized through the blood pressure measurement based on PPG, and the all-day blood pressure can be better monitored based on continuous blood pressure monitoring of PPG in order to reflect the diurnal change situation of the blood pressure. The method and the device have important significance to the prevention of sudden cardiovascular diseases. Through the continuous blood pressure measurement based on PPG, the treatment of hypotensive drugs can be well monitored. Compared with other continuous blood pressure measurement, the continuous blood pressure measurement way based on PPG has remarkable advantages.

Description

technical field [0001] The invention relates to the technical field of turning, in particular to a method and device for measuring blood pressure based on double PPG. Background technique [0002] With the improvement of domestic living standards, great changes have taken place in people's diet structure, the content of high fat and high cholesterol has increased significantly, and high fiber components such as vegetables have decreased; the popularity of various means of transportation, especially cars, And other advanced technologies are increasingly serving human beings, reducing people's activity; in addition, fast-paced, high-stress life has become a hotbed for cardiovascular diseases, and cardiovascular diseases have become an important problem in developing countries. cause of death. Among them, high blood pressure has become a threat to human health. invisible killer. Myocardial infarction, cerebral hemorrhage, renal failure and other vital organ vascular damage a...

AI Technical Summary

Problems solved by technology

The traditional auscultation method is simple and fast, but it requires doctors to participate in the detection; electronic sphygmomanometers mostly use the oscillometric method, which has been put into the market and can be used for self-testing by patients, but it still uses the cuff flushing and deflation method to detect blood pressure at intervals , so only the blood pressure value at a certain measurement moment can be detected, and there are only two independent values: systolic blood pressure and diastolic blood pressure

For critically ill patients, it is necessary to detect the blood pressure waveform in real time to monitor the working state of the heart, so there is currently a lack of a device that can continuously measure the patient's blood pressure for people to use

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