Blood pressure measurement method and sphygmomanometer

Abstract

The invention discloses a blood pressure measurement method and a sphygmomanometer. The audio information of korotkoff sounds of a tissue to be tested and pressure information of the tissue to be tested are obtained; the multiple korotkoff sounds in the beginning time period of the audio information are screened, and the korotkoff sound with the largest decibel amplitude change among the multiplekorotkoff sounds is selected as a first korotkoff sound; the multiple korotkoff sounds in the ending time period of the audio information are screened, and the korotkoff sound with the largest decibelamplitude change among the multiple korotkoff sounds is selected as a second korotkoff sound; a first time point corresponding to the first korotkoff sound is determined, a second time point corresponding to the second korotkoff sound is determined, a first pressure value of the tissue to be tested is determined according to the first time point and the pressure information, and a second pressurevalue of the tissue to be tested is dertermined according to the second time point and the pressure information; and the first pressure value and the second pressure value are a high pressure value and a low pressure value of the tissue to be tested. According to the present invention, the problem that sphygmomanometer is affected by subjective factors and the measurement is inaccurate is solved,and the accuracy of blood pressure measurement is improved.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a blood pressure measuring method and a sphygmomanometer. Background technique [0002] In the related art, there are two main types of sphygmomanometers, one is a mercury sphygmomanometer and the other is an electronic sphygmomanometer (oscillometric method). Mercury sphygmomanometers measure blood pressure by auscultation (the Korotkoff sound method). It is mainly composed of a balloon, a cuff, and a manometer. The measurement method is to use a balloon to inflate and pressurize the cuff wrapped around the upper arm when measuring blood pressure, and the pressure acts on the brachial artery through the soft tissue. When the applied pressure is higher than the systolic pressure, the balloon is slowly deflated, and the pressure inside the cuff drops accordingly. The blood can flush out the blocked blood vessels to form a vortex, and the sound of pulsation can be heard with a s...

AI Technical Summary

Problems solved by technology

This method measures blood pressure through human subjective judgment. Delay in human response and misoperation will lead to inaccurate blood pressure measurement. Another oscillometric method is also called oscillation method. Its principle is to automatically adjust the cuff wrapped around the upper arm. The amount of inflation, changing the pressure, the blood flow through the blood vessel has a certain oscillation wave, which is received by the pressure sensor and gradually deflated. According to the change of the oscillation wave, the pressure and fluctuation detected by the pressure sensor will also change accordingly. Choose the moment with the largest fluctuation As a reference point, based on this point, the fluctuation point of a certain value forward is the systolic pressure, and the fluctuation point of a certain value backward is the diastolic pressure. The value is set differently by different manufacturers.

The clinical verification of the sphygmomanometer is designed with the auscultation method as the standard and using statistical methods. This method requires the accumulation of a large amount of measurement data, and the appropriate fluctuation points are selected as the systolic and diastolic blood pressure through statistical methods. Because the human body structure Or the difference in physical condition will have a greater impact on the measurement results, which will easily lead to inaccurate measurement

[0003] Aiming at the problem that the sphygmomanometer is affected by subjective factors and the measurement is inaccurate in related technologies, no effective solution has been proposed so far

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