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Pace-making signal detecting method and system and electrocardio detecting device

A pacing signal and detection system technology, which is applied in the field of ECG detection equipment and pacing signal detection, can solve the problems of poor immunity, lower detection sensitivity, and simple detection strategy, so as to achieve accurate output results and reduce the probability of misjudgment Effect

Active Publication Date: 2014-06-18
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its disadvantage is that due to the simple detection strategy, it is impossible to detect the shape of the pacing signal, and it is also impossible to adaptively adjust the detection threshold based on changes in the pacing signal and external noise, so the immunity is poor.
In order to improve the anti-interference performance of the pacing signal detection module, some manufacturers sacrifice the detection threshold, thereby reducing the detection sensitivity.

Method used

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  • Pace-making signal detecting method and system and electrocardio detecting device
  • Pace-making signal detecting method and system and electrocardio detecting device
  • Pace-making signal detecting method and system and electrocardio detecting device

Examples

Experimental program
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Embodiment 1

[0054] Please refer to image 3 , the present embodiment provides a pacing signal detection method, comprising the following steps:

[0055] Step 101, acquiring pacing ECG signals, specifically, after the pacing ECG signals are picked up by the electrodes, the pacing ECG signals are extracted through an input protection circuit, a filter circuit and an impedance transformation circuit.

[0056] Step 102, separate the original pacing signal from the pacing ECG signal extracted in step 101, specifically, perform high-pass or band-pass filter processing on the pacing ECG signal by hardware, filter out the ECG signal, and separate the original pacing signal beat signal.

[0057] Step 103, outputting the original pacing signal sequence, specifically, performing analog-to-digital conversion on the separated original pacing signal to obtain the original pacing signal sequence.

[0058] Step 104, preprocessing the original pacing signal sequence to highlight the characteristics of t...

specific example

[0063] Please refer to Figure 4 , in step 104, a specific example of preprocessing the original pacing signal sequence includes the following steps:

[0064] Step 202, save the fixed-length original pacing signal sequence 201 into the detection data buffer. This solution can avoid taking up too many processor resources at a high sampling frequency. For example, the detection of the original pacing signal sequence is set as It is detected every 2ms, that is, the original pacing signal sequence with a length of 2ms is stored in the detection data buffer for detection. When the detection of the original pacing signal sequence is performed every 4ms, the fixed length is set to 4ms.

[0065] Preferably, after step 202, step 203 is executed first, and the original pacing signal sequence is filtered. The filtering process may be band-pass filtering or high-pass filtering, and the band-pass filtering includes low-pass filtering and high-pass filtering.

[0066] When high-pass filte...

Embodiment 2

[0104] Embodiment 1 is to detect the pacing signal of a single-channel pacing ECG signal. In practical applications, the ECG signal is usually collected through multiple channels. If only one channel is selected to detect the pacing signal, some pacing signals May cause missed detection due to small amplitude, in order to avoid missing pacing signal, in this embodiment, select all or some of them from the multiple channels of collecting ECG signals, and select each channel can be The solution of Embodiment 1 is used to detect the pacing signal of a single channel, the position of the pacing signal of each channel is recorded, and then the pacing signals detected by each single channel are combined.

[0105] Please refer to Figure 10 , in this embodiment, after preprocessing the pacing signal sequence in step 804, step 801 is executed to detect the pacing signal of the channel based on the original pacing signal sequence of the channel for each channel, which will be confirmed...

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Abstract

The invention discloses a pace-making signal detecting method and system and an electrocardio detecting device. The method comprises preprocessing original pace-making signals separated from pace-making electrocardio signals, and then based on the preprocessed signals, computing the basic morphological parameters of the pace-making signals, wherein the basic morphological parameters include the width, the slew rate and the amplitude of the pace-making signals; based on the calculated basic morphological parameters of the pace-making signals, determining whether the pace-making signals are true or false, and recording the position information of the pace-making signals which are determined to be true. The pace-making signal detecting device can detect the pace-making signals more accurately and mark the pace-making signals on electrocardio signals for output.

Description

technical field [0001] The present application relates to a medical device, in particular to a pacing signal detection method, system and electrocardiographic detection device. Background technique [0002] Bradycardia is a low heart rate that may be accompanied by an irregular heart rhythm, usually less than 60 beats per minute. In people with severe bradycardia, their hearts cannot pump enough oxygen-rich blood throughout the body, even when they are exercising. As a result, symptoms of dizziness, lack of physical strength, shortness of breath and even syncope will appear, seriously affecting the quality of life and even life-threatening. Implanting a pacemaker in a patient is the most common way to treat bradycardia. A pacemaker increases the heart rate by sending small electrical signals to the heart, which helps the heart restore its rhythm and relieve symptoms of bradycardia. The detection of pacing signals by using ECG detection equipment or electrocardiograph and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0402
CPCA61N1/36507A61B5/0402A61B5/0452A61N1/3704A61N1/36G06F17/00A61B5/349A61N1/3702
Inventor 孙泽辉程晓文丁明石刘启翎
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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