Body surface detection method and device for high frequency wave of repolarization of ventricle

Abstract

An apparatus for detecting the bipolar HF wave of ventricle on the surface of body is composed of a movable unit consisting of signal acquisition circuit, amplifier, A / D converter and emitting module, and a fixed unit consisting of data receiver, USB communication unit, PC algorithm processing unit and output module. Its detecting method including signal conversion and removal of interference and noise is also disclosed.

Description

technical field

[0001] The invention relates to a body surface non-invasive detection method of ventricular repolarization high-frequency waves and a device for realizing the method. Background technique

[0002] Sudden death (Sudden Death, referred to as SD) refers to sudden, rapid and unexpected natural death, and SD accounts for 15% to 32% of human deaths. According to statistics, about 6 million people are killed by SD every year in the world, and 350,000 people are killed by SD every year in the United States, with an average of 0.7 people per minute. In my country, 1.8 million people die from SD every year, with an average of 3.4 people per minute. SD is divided into two categories: sudden cardiac death (60%-75%) and non-sudden cardiac death (25%-40%). Sudden Cardiac Death (SCD) refers to sudden death caused unexpectedly by cardiac causes. SCD is an important life-threatening factor in western developed countries. According to incomplete statistics from the American...

Examples

Embodiment

[0029] Ventricular repolarization high-frequency wave is a kind of high-frequency microvolt-level cardiac electrophysiological signal that occurs in the ventricular repolarization interval (S-T-U segment) newly discovered by the applicant. figure 1 It is a typical high-frequency wave of ventricular repolarization. In the figure, the upper part is the reference ECG, and the lower part is the high-frequency wave of ventricular repolarization.

[0030] The basic idea of ​​the present invention is to firstly use a high common-mode rejection ratio amplifier and a wave notch filter to eliminate the power frequency interference in the original signal containing the ventricular repolarization high-frequency wave signal extracted by the body surface electrodes; then, use a band-pass filter to remove the instrument noise ; Finally, pattern recognition and Wiener filtering are combined to effectively remove EMG and obtain ventricular repolarization high-frequency wave signals.

[0031] ...

technical field

[0001] The invention relates to a body surface non-invasive detection method of ventricular repolarization high-frequency waves and a device for realizing the method. Background technique

[0002] Sudden death (Sudden Death, referred to as SD) refers to sudden, rapid and unexpected natural death, and SD accounts for 15% to 32% of human deaths. According to statistics, about 6 million people are killed by SD every year in the world, and 350,000 people are killed by SD every year in the United States, with an average of 0.7 people per minute. In my country, 1.8 million people die from SD every year, with an average of 3.4 people per minute. SD is divided into two categories: sudden cardiac death (60%-75%) and non-sudden cardiac death (25%-40%). Sudden Cardiac Death (SCD) refers to sudden death caused unexpectedly by cardiac causes. SCD is an important life-threatening factor in western developed countries. According to incomplete statistics from the American...

Examples

Embodiment

[0029] Ventricular repolarization high-frequency wave is a kind of high-frequency microvolt-level cardiac electrophysiological signal that occurs in the ventricular repolarization interval (S-T-U segment) newly discovered by the applicant. figure 1 It is a typical high-frequency wave of ventricular repolarization. In the figure, the upper part is the reference ECG, and the lower part is the high-frequency wave of ventricular repolarization.

[0030] The basic idea of ​​the present invention is to firstly use a high common-mode rejection ratio amplifier and a wave notch filter to eliminate the power frequency interference in the original signal containing the ventricular repolarization high-frequency wave signal extracted by the body surface electrodes; then, use a band-pass filter to remove the instrument noise ; Finally, pattern recognition and Wiener filtering are combined to effectively remove EMG and obtain ventricular repolarization high-frequency wave signals.

[0031] ...

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