Blood pressure measurement method and system

Abstract

The invention discloses a blood pressure measurement method and system, and the measurement method comprises the steps: employing a pressure sensor to apply pressure to a radial artery in a stepped pressurization mode, collecting pulse pressure waves, and synchronously measuring a pressure value and time; determining instant pressure values of a pulse pressure wave appearing point A, a maximum amplitude point W and a vanishing point B by using multiple groups of observation data; and accurately obtaining the diastolic pressure DP, the average arterial pressure MAP, the systolic pressure SP andthe pulse rate Pr corresponding to the points A, W and B through pulse wave pressure / blood pressure conversion calculation.

Description

technical field [0001] The invention belongs to non-invasive sign data measurement, in vitro diagnosis and health monitoring technology, in particular to a blood pressure measurement method and system. Background technique [0002] The use of mercury sphygmomanometers to measure blood pressure is currently recognized as a landmark method, known as the Keshi sound method. The measurer manually controls the air valve to deflate the high-pressure cuff so that the blood vessel deforms continuously as the cuff pressure decreases. Under the action of the pulse pressure wave in the blood vessel, the blood flow impacts and rubs against the deformed vessel wall to produce Korotkoff sounds. Use a stethoscope to listen to the appearance and disappearance of Korotkoff sounds and read the mercury column height at these two moments at the same time to directly obtain the values ​​of systolic blood pressure SP and diastolic blood pressure DP. However, there are several major defects in th...

AI Technical Summary

Problems solved by technology

When measuring blood pressure for individuals with weak heart pump function, poor blood vessel elasticity, high blood viscosity, and slow blood flow velocity, the impact of these two system errors on the measurement results will be more obvious;

[0004]Second, the deflation speed of the cuff directly affects the accuracy of the measurement results, and the deflation speed is difficult to control accurately, and accidental errors will occur no matter whether it is fast or slow;

[0005]Third, sound and pressure are two independent observations, but they must be heard and read at the same time, and any identification deviation of the measurer will produce accidental errors;

[0006]Fourth, other physical signs such as pulse rate cannot be obtained;

[0007]Fifth, it is difficult to realize the automation and digitization of measurement and real-time remote application

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