Blood pressure measuring equipment of korotkoff sound stethoscopy and data processing method

Abstract

The invention relates to a blood-pressure measuring device using the Korotkoff sound auscultation method and a data processing method thereof. The blood-pressure measuring device is provided with a stethoscope and a cuff connected with an air filling and discharging device and is characterized in that: an electronic pressure measuring and displaying device is provided. The structure of the blood-pressure measuring device is that: a pressure sensor connected with the cuff is provided and connected with a data processing controller by a signal conditioning circuit and an A / D switching circuit; the data processing controller is at least provided with a cuff pressure data output terminal and a cuff pressure change rate indication output terminal which are connected with an electronic display device. The method of the invention has the processes of automatically zeroing initial pressure, measuring and displaying air-discharging rate, automatically choosing and displaying the value closest to the measured pressure value, and so on. The invention can realize non-hydrargyrum of the blood-pressure measurement by virtue of the Korotkoff sound auscultation method, reduce pollution to the environment, enhance the precision and reliability of the blood-pressure measurement by an electronic pressure measuring system and reduce artificial errors.

Description

technical field [0001] The invention belongs to medical equipment, in particular to a blood pressure measuring device and a data processing method of the device. Background technique [0002] Currently commonly used sphygmomanometers include mercury column (mercury) sphygmomanometer, electronic sphygmomanometer and barometer sphygmomanometer. The electronic sphygmomanometer uses a pressure sensor to measure the cuff pressure and displays it through electronic components. For the oscillometric method, the blood pressure value is calculated indirectly according to the change of the cuff pulse wave. This method does not use the traditional Korotkoff sound auscultation method to judge the starting moment of the blood vessel, but through the pulse wave sensor or pressure sensor. There are large errors in the application, and although the measurement principle of the barometer type sphygmomanometer is the Korotkoff sound auscultation method, the pressure value indication part is a...

AI Technical Summary

Problems solved by technology

[0004] 1. Environmental pollution

Because mercury (mercury) is poisonous, mercury leakage often occurs during use of mercury sphygmomanometers, causing environmental pollution;

[0005] 2. The subjective error introduced by the operator in the blood pressure measurement process is difficult to control, thus reducing the measurement accuracy of the system

However, in the actual use of mercury sphygmomanometers, it is difficult for the operator to accurately control the deflation rate, and the reading may not be able to read the nearest 2mmHg of the mercury column due to personal factors. The above-mentioned subjective factors of the operator will greatly introduce the overall measurement results. In fact, the measurement error introduced by the subjective factors of the operator during the use of the mercury sphygmomanometer is highly controversial.

[0006] 3. The accuracy and reliability of pressure measurement need to be further improved

Since the invention of the auscultatory mercury sphygmomanometer more than 100 years ago, there has been no technical improvement. The measurement and indication of pressure still use the method of liquid column (mercury column). The most important point in the use of mercury sphygmomanometer is the problem of scale, namely Make sure the pressure measurement starts at zero, if the starting line is above or below zero then the final measurement will be inaccurate

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