Korotkoff's sounds visual evaluating method and apparatus for electric sphygmomanometer accuracy

Abstract

The invention provides a method and a device for visual evaluation of the accuracy of an electronic sphygmomanometer based on Korotkoff Sound. The method comprises the following steps: measuring the blood pressure of a subject by the Korotkoff Sound method, recording sound signals from the stethoscope during the measurement, recording changes in the pressure of the cuff by using a pressure sensorduring the measurement, converting the recorded pressure and sound signals into digital signals, sending the digital signals to a computer that processes the digital signals and displays, respectivelyon a display screen, the wave patterns of the cuff pressure signal and the stethoscope sound signal that vary synchronously along the same timeline, calibrating and verifying systolic pressure valueand diastolic pressure value measured by the Korotkoff Sound method according to the wave patterns, and using the values as references for accuracy evaluation of blood pressure measured by the electronic sphygmomanometer. The systolic pressure value and the diastolic pressure value are determined more accurately and objectively based on the visual Korotkoff Sound method of the invention, which minimizes the error caused by manual measurement of blood pressure, and improves the accuracy and objectivity of the whole evaluation system.

Description

technical field [0001] The invention belongs to a method and device for evaluating the accuracy of medical equipment, in particular to a method and device for evaluating the accuracy of an electronic sphygmomanometer Background technique [0002] Blood pressure measurement methods are mainly divided into invasive direct measurement and non-invasive indirect measurement. The widely used indirect blood pressure measurement methods can be divided into: Korotkoff sound auscultation method, oscillometric method, pulse delay method, ultrasonic method, etc. according to the measurement principle. For the indirect measurement method, the gold standard recognized by the international medical community is the Korotkoff sound auscultation method. [0003] With the rapid development of electronic and computer technology, a large number of automatic and semi-automatic blood pressure measuring devices have sprung up on the market. Most of them are simple to operate and easy to use. Consum...

AI Technical Summary

Problems solved by technology

The position of the Korotkoff sound auscultation method in blood pressure measurement is unquestionable. However, it is difficult to get rid of the influence of subjective factors only relying on auscultation. Individual differences among auscultators, such as differences in hearing and reaction speed affect the results of auscultation

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