Nondestructive testing device for coronary heart disease risk indexes

Abstract

The invention discloses a nondestructive testing device for coronary heart disease risk indexes.The device comprises a data processing module which is connected with a multichannel synchronous A / D conversion module.The multichannel synchronous A / D conversion module is connected with a heart sound signal detection module, an electrocardiosignal detection module and a four-limb cuff inflation and deflation module.The multichannel synchronous A / D conversion module converts a heart sound signal detected by the heart sound signal detection module, an electrocardiosignal detected by the electrocardiosignal detection module and a cuff pressure signal detected by the four-limb cuff inflation and deflation module and then transmits the converted signals to the data processing module for construction of relaxation period heart sound signal amplitude sequences before and after pressurization on the four limbs respectively, wherein the heart sound signal, the electrocardiosignal and the cuff pressure signal are collected synchronously; the data processing module obtains heart noise evaluation indexes of relaxation period heart sounds before and after pressurization on the four limbs according to the obtained heart sound signal amplitude sequences, and finally the coronary heart disease risk indexes are obtained.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a non-destructive testing device for coronary heart disease risk index. Background technique [0002] Coronary Artery Heart Disease (CHD) is the most common heart disease with high morbidity and mortality, which seriously endangers human health. In my country, its incidence is increasing at a rate of 20% per year, and it is getting younger gradually. If effective treatment cannot be carried out in the early stage of the disease, it will lead to myocardial ischemic necrosis or even death. Clinical studies have confirmed that coronary heart disease patients with coronary artery stenosis greater than 80% have obvious symptoms of myocardial ischemia (clinical manifestations such as angina pectoris and chest tightness), which can be detected by means of ultrasound and electrocardiography. However, in the early stage of coronary heart disease, the symptoms of cardiac ischemia are not o...

AI Technical Summary

Problems solved by technology

However, due to the inevitable introduction of noise in the process of collecting heart sound signals, such as the board noise of the collection device, etc.

Moreover, noise interference, whether in the time domain, frequency domain or other transform domains, may be aliased with diastolic murmurs, thereby affecting the accuracy of the evaluation results

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