Device and method for analyzing and processing electrocardiograph signal
A technology for analysis and processing of ECG signals, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems affecting the natural delivery process, achieve high anti-interference ability, accuracy, and easy measurement
Active Publication Date: 2010-01-20
SHENZHEN DIMETEK DIGITAL MEDICAL TECH
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Problems solved by technology
The current method that can directly record fetal ECG signals is to place recording electrodes on the fetal scalp through the cervix to obtain fetal ECG signals. This invasive method can only be used for fetal monitoring when the cervix has been opened before labor. Crossing manipulation affects natural birthing process
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[0033] Such as figure 1 As shown, the electrocardiographic signal analysis and processing device proposed by the present invention includes: a pair of electrocardiographic recording electrodes 110 placed on human skin for obtaining human electrocardiographic signals; an impedance converter 120, whose input end is damped by high frequency The device is coupled with the output end of the electrocardiographic recording electrode, so that the input impedance is raised to more than 10 megaohms, and is used to convert the high-impedance analog signal into a low-impedance analog signal; an amplifier 130 is used to convert the A low-impedance analog signal amplification; an analog-to-digital converter 140, the amplified analog signal is directly coupled to the analog-to-digital converter for sampling the analog signal to form digital data; an electrocardiographic signal analysis and processing unit 150, including P-QRS-T wave group judgment module and P-QRS-T wave group extraction mod...
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The invention provides a device and a method for analyzing and processing an electrocardiograph signal. The device comprises a pair of electrocardiograph recording electrodes put on the skin of a human body, an impedance converter used for converting a high-impedance analog signal into a low-impedance analog signal, an amplifier which is connected with the impedance converter and used for amplifying the low-impedance analog signal, an analog-to-digital converter used for sampling the amplified analog signal and converting the amplified analog signal into a digital signal, a signal analyzing and processing unit used for carrying out position judging, extraction and reconstruction on the electrocardiograph signal which is converted into the digital signal, and an electrocardiograph signal display device. The invention can be used for the heart monitoring of ordinary people and also used for the electrocardiograph monitoring of the fetus of pregnant women. Because the interference of a non-electrocardiograph-signal with the same frequency is eliminated, the accuracy is very high.
Description
technical field [0001] The present invention relates to medical equipment and methods, in particular to an electrocardiographic signal analysis and processing device and method for human body or pregnant women. Background technique [0002] The method of recording ECG signals from the surface of human skin is widely used in the field of clinical heart function measurement and monitoring, its amplitude ranges from millivolts to microvolts, and its main frequency ranges from 0.5-75 Hz. Since the ECG signal recording is often mixed with other signal components, such as muscle electrical activity, etc., it is necessary to process the ECG signal in the recording to reduce or remove the non-ECG signal part. At present, in the prior art, various ECG machines and ECG monitors and other ECG signal recording equipment generally use band-pass filtering to reduce or remove non-ECG signals in the record, that is, use a high-pass filter to filter the lower frequency components Reduce or ...
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Login to View More IPC IPC(8): A61B5/0402A61B5/0452A61B5/0444A61B5/344
Inventor 曹阳
Owner SHENZHEN DIMETEK DIGITAL MEDICAL TECH