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Method and device for triggering external diaphragm pacemaker using surface EMG signal as synchronization signal

A technology of synchronizing signal and muscle pacemaker, applied in the medical field, can solve the problems of limited application of respiratory muscle surface electromyography, interference, and difficulty in extracting electromyography signals.

Active Publication Date: 2017-02-08
广州雪利昂生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the serious interference of ECG and other signals when the surface EMG collects the EMG signals of the respiratory muscles, it is difficult to extract pure EMG signals, which limits the application of the surface EMG of the respiratory muscles.

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  • Method and device for triggering external diaphragm pacemaker using surface EMG signal as synchronization signal
  • Method and device for triggering external diaphragm pacemaker using surface EMG signal as synchronization signal
  • Method and device for triggering external diaphragm pacemaker using surface EMG signal as synchronization signal

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Embodiment Construction

[0069] An application specific embodiment of the present invention:

[0070] 1), functional requirements and parameter values

[0071] a. Sampling and AD converting the output signal of the body surface diaphragm muscle electromyography measurement circuit, the precision is 12bit, and the sampling frequency is initially selected as 4K / s;

[0072] b. Perform fourth-order low-pass filtering (cutoff frequency 600Hz) and power frequency notch (optional 50Hz and 60Hz) processing on the signal;

[0073] c. Calculate the myoelectric envelope and form a synchronous signal, and use this synchronous signal to control the signal output of the external diaphragm pacemaker;

[0074] 2), filtering, envelope calculation and synchronous signal generation algorithm

[0075] d. Fourth-order low-pass filter and power frequency notch

[0076] Low-pass filtering and power frequency notch, the pulse transfer function is:

[0077] G ( z ) = ...

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Abstract

The invention discloses a method and apparatus for triggering an external diaphragm pacemaker by using a surface electromyogram signal as a synchronization signal. The method comprises the steps of 1) acquiring surface an electromyogram signal of inspiratory muscles; 2) conducting envelope calculation, using a root mean square algorithm for implementation, and using an envelope value greater than a threshold for indicating muscle contraction, the threshold being determined based on a mean value of envelope values in a certain period; and 3) generating a synchronization signal which can be used for triggering the signal output of an external diaphragm pacemaker. The invention improves the control accuracy by the above means, and triggers the external diaphragm pacemaker by using the surface electromyogram signal as the synchronization signal in a more stable way.

Description

【Technical field】 [0001] The invention relates to the field of medical technology, in particular to a method for triggering an external diaphragmatic pacemaker using a surface electromyography signal as a synchronous signal and a device using the method. 【Background technique】 [0002] The human body's breathing-related muscles mainly include the diaphragm, external intercostal muscles, pectoralis major, abdominal muscles, sternocleidomastoid, etc., among which the diaphragm and external intercostal muscles are the most important inspiratory muscles. When inhaling, the diaphragm contracts, the dome of the diaphragm moves down, and the chest cavity expands; when exhaling, the diaphragm muscle relaxes, the dome of the diaphragm rises, and the chest cavity shrinks. When inhaling, the external intercostal muscles contract, and the ribs move upward and outward, increasing in size; when exhaling, the external intercostal muscles relax, and the ribs move downward and inward, reduci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N1/36
CPCA61N1/3601A61N1/36014
Inventor 黄晓蔚
Owner 广州雪利昂生物科技有限公司
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