Method for non-invasive blood pressure detection

Abstract

The invention relates to a method for non-invasive blood pressure detection. The method for non-invasive blood pressure detection is particularly applicable to newborn. The method for non-invasive blood pressure detection comprises the following steps of A0, carrying out initial setting on a pre-inflation value P0 and an inflation added value of the pre-inflation value P0, A1, carrying out pre-inflation to reach the pre-inflation value P0, carrying out real-time measurement to obtain a cuff pressure value, judging whether the cuff pressure value is excessively large, carrying out rapid deflation when the cuff pressure value is excessively large, carrying out stepped step-by-step inflation according to the inflation added value when the cuff pressure value is not excessively large, carrying out sampling to obtain an initial sampling signal, judging whether the cuff pressure value is excessively large after inflation of each step is carried out, carrying out step A2 when the cuff pressure value is excessively large, carrying out preprocessing on the initial sampling signal so as to eliminate noise, obtaining a sampling signal after the preprocessing, carrying out pulse wave detection on the sampling signal after the preprocessing, storing a corresponding cuff pressure value P1 when an oscillatory wave appears for the first time, storing a corresponding cuff pressure value P2 when the oscillatory wave disappears finally, using the cuff pressure value P1 and the cuff pressure value P2 as critical values, and setting the pre-inflation value P0 to be equal to a Pt according to the cuff pressure value P2, A2, carrying out stepped step-by-step deflation, carrying out real-time measurement to obtain the cuff pressure value, carrying out measurement on blood pressure, and A3, calculating measuring results.

Description

【Technical field】 [0001] The invention relates to non-invasive blood pressure detection, in particular to a method for non-invasive blood pressure detection of newborns and weak persons. 【Background technique】 [0002] Blood pressure measurement involves obtaining the maximum arterial pressure caused by the heart's systole and the minimum pressure in the artery when the heart relaxes, ie, the systolic and diastolic pressures. Blood pressure parameters are important physiological parameters, which can reflect the functional status of the human heart, cardiovascular and cerebrovascular, etc., and have high reference value for the prevention of various related diseases. Currently, blood pressure measurement methods are mainly divided into two measurement methods: invasive blood pressure (IBP) and non-invasive blood pressure (None Invasive Blood Pressure, NIBP). IBP measurement is accurate, but it is harmful and not conducive to daily measurement. It is used more in critically ...

AI Technical Summary

Problems solved by technology

The biological functions of newborns are still relatively weak. By inflating and squeezing blood vessels, the degree of inflating and the handling of accidents must be fast and effective. However, there are still many problems and deficiencies in the setting of pre-inflated values ​​and overvoltage protection. It brings a lot of hidden dangers to the measurement of newborns

In the deflation stage, the deflation rate and deflation time are also related to the comfort of the measurement and the accuracy of the calculated blood pressure value of the commonly used step deflation method. The current deflation method cannot effectively adjust the deflation step by step. rate, which also brings problems of measurement comfort and accuracy of result calculation

The pulse signal of newborns is relatively weak, and it is very susceptible to interference. If it cannot be effectively removed, it will directly affect the accuracy of the measurement. Various filtering methods currently used cannot effectively remove noise interference.

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