Non-invasive blood pressure simulator based on the mechanism of Korotkoff sounds

Abstract

The invention discloses a non-invasive blood pressure simulator based on a Korotkoff sound production mechanism. The non-invasive blood pressure simulator comprises a haemodynamic simulation device and an upper arm model, wherein the haemodynamic simulation device is used for producing a simulation blood flow adjustable in amplitude and frequency and producing a pulsating flow required by a brachial artery input of the upper arm model, and the upper arm model is wholly cylindrical and used for simulating the upper arm consisting of the human body brachial artery and muscles, is sleeved by a blood pressure cuff and produces vibration under the cuff pressure to form a Korotkoff sound signal. The non-invasive blood pressure simulator belongs to a extracorporeal circulation simulation system, achieves simulation of blood pressure and blood flow distribution in the aorta and brachial artery, achieves simulation of human body blood pressure non-invasive measuring process on the basis that the Korotkoff sound and oscillatory wave production mechanism is analyzed, and accordingly achieves metrological verification of an electronic sphygmomanometer.

Description

technical field [0001] The invention relates to the field of medical machinery, in particular to a non-invasive blood pressure simulator based on the generation mechanism of Korotkoff sounds. Background technique [0002] The blood pressure value measured by the sphygmomanometer usually refers to the arterial blood pressure, that is, the lateral pressure of the blood in the arterial vessel on the vessel wall per unit area, including systolic pressure and diastolic pressure. Sphygmomanometers can be divided into invasive and non-invasive according to the measurement method. At present, non-invasive sphygmomanometers are widely used, and electronic sphygmomanometers are typical representatives of non-invasive sphygmomanometers. [0003] Electronic sphygmomanometers usually use the oscillometric method to measure blood pressure, that is, measure systolic, diastolic and mean pressures through automatic analysis of high-frequency pressure oscillation wave signals in the cuff. Ho...

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Problems solved by technology

[0009] Based on the above-mentioned deficiencies in the prior art, the present invention now proposes a non-invasive blood pressure simulator based on the mechanism of Korotkoff sound generation to solve the impact on the detection results caused by the deflation speed of the original electronic sphygmomanometer and different brands, and Problems such as not establishing a simulator based on the mechanism of Korotkoff sounds and oscillatory waves

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