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Method and device for assessing heart fatigue degree

A fatigue degree, heart technology, applied in the field of evaluation of human heart performance, can solve problems such as no clear analysis methods and solutions, and achieve the effect of reducing the occurrence of sudden death and reducing treatment costs

Active Publication Date: 2022-03-15
陈国柱
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only focuses on the results of changes in cardiac contractility before and after exercise, but fails to analyze the process of changes in cardiac contractility. What is the state of heart fatigue? And how tired is it? Did not give a clear analysis method and solution

Method used

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  • Method and device for assessing heart fatigue degree
  • Method and device for assessing heart fatigue degree
  • Method and device for assessing heart fatigue degree

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Embodiment 1

[0039] The heart fatigue evaluation method in the present embodiment comprises the following steps:

[0040] Step1: Fix the sensors of the existing ECG and heart sound acquisition equipment in the corresponding ECG and heart sound acquisition area for each index of the subject, such as figure 1 As shown, R, L, F are the positions of the body surface electrodes, and S is the position of the heart sound sensor. Subjects collected ECG and heart sound signals synchronously and continuously for 2 hours in a quiet state or 24 hours in a normal living state, and extracted the R wave and the amplitude S1 of the first heart sound. The electrocardiogram signal is subsequently referred to as the ECG signal, and the heart sound signal is subsequently referred to as the PCG signal.

[0041] The R wave position refers to the time point at which the R wave appears in each cardiac cycle, and the RR interval refers to the time interval between the R waves of two adjacent cardiac cycles.

[0...

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Abstract

Cardiac fatigue evaluation device of the present invention, it comprises the electrocardiogram, heart sound collection equipment that application software is housed, and described application software comprises: calculating module and comparison module; and PCG signal, calculate the mean value of the amplitude of each first heart sound in different cardiac cycles, and then calculate the increase of myocardial contractility ⊿S1 when the heart rate increases by 1 beat / min m , and output the data to the comparison module; the comparison module compares ⊿S1 m‑1 and ⊿S1 m , ⊿S1 m+1 The size of: when ⊿S1 m+1 ≥⊿S1 m , output the conclusion that the heart is in a fatigue-free state to the calculation module; when ⊿S1 m+1 <⊿S1 m , ⊿S1 m ≥⊿S1 m‑1 and ⊿S1 m When >0, output the conclusion of m value and relative heart fatigue to the calculation module; when ⊿S1 m ≤0, and ⊿S1 m‑1 >0, output the conclusion of m value and absolute heart fatigue to the calculation module. Cardiac relative / absolute fatigue index has preventive and reminder significance for patients who already have certain symptoms or diseases.

Description

【Technical field】 [0001] The invention relates to the technical field of medical equipment, in particular to a method and device for evaluating human heart performance. 【Background technique】 [0002] The heart is the power device to maintain blood circulation, and it is a muscular organ that realizes the function of pumping blood. It plays the role of a blood pump, running blood to all parts of the body, ensuring the normal metabolism of the body and maintaining life. Under long-term, high-intensity workload, muscle tissue will experience fatigue, manifested as fatigue, pain and reduced function. After heart fatigue occurs, if the factors that cause heart fatigue cannot be removed in time, the state of heart fatigue will not be relieved. After long-term fatigue accumulation, the heart will suffer from overwork, injury, functional failure, and even cardiac arrest, threatening people's lives at any time. [0003] Studies have shown that patients with sudden cardiac death gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/346A61B5/33A61B5/352A61B7/04
CPCA61B7/04A61B5/318A61B5/349
Inventor 陈国柱
Owner 陈国柱
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