Air supply method by triggering breathing machine by esophagus electrode diaphragmatic muscle electromyogram

A technology for triggering ventilator and electromyography, applied in respirator and other directions, can solve the problems of lack of communication medium, man-machine anti-man-machine asynchrony, etc., to reduce anesthetic drugs and muscle relaxants, shorten the time of mechanical ventilation, Reduce the effect of triggering work

Inactive Publication Date: 2006-02-15
THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT) +1
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Problems solved by technology

At present, various types of ventilators have failed to completely solve the problems of man-machine confrontation and man-machine asynchrony. The key is the lack of an effective communication medium between the ventilator and the patient. It is necessary to find a medium that can fully communicate with the patient and the ventilator to improve Man-machine synchronization of ventilator improves clinical efficacy

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  • Air supply method by triggering breathing machine by esophagus electrode diaphragmatic muscle electromyogram
  • Air supply method by triggering breathing machine by esophagus electrode diaphragmatic muscle electromyogram
  • Air supply method by triggering breathing machine by esophagus electrode diaphragmatic muscle electromyogram

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Embodiment Construction

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to have a deeper understanding of the purpose, features and advantages of the present invention.

[0016] Such as figure 1 As shown, the control device of the ventilator includes an esophageal electrode 1, a signal amplifier 2, an A / D converter 3, a central processing unit 4, and a signal output 5. The esophageal electrode 1 is placed in the esophagus to collect EMG signals; the signal amplifier 2 converts the original The MEG signal is amplified, the amplified signal is converted from an analog signal to a digital signal by the A / D converter 3, and the central processing unit 4 is a software processing program based on LabVIEW to process the signal, and the trigger signal sent is passed through the signal The output from the output terminal 5 makes the ventilator 6 deliver air.

[0017] Such as figure 2 As shown, step 20 is the initial s...

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Abstract

This invention provides method to trigger breathing machine to work by EMG comprised steps: (1) collecting EMG signal; (2) obtaining diaphragmatic muscle EMG signal from band-pass filter; (3) calculating the root-mean-square value and collecting corresponding envelope; (4) computing the slope S by linear fitting for every 50ms and the mean value M for the envelope curve within 50ms; (5) determining the slope critical value C and base line threshold T; comparing S, M, C and T on different interval, and sending trigger signal. The invention can improve synchronism between human and machine, decrease the use of dope and muscle-release agent, and the cost.

Description

technical field [0001] The invention relates to a method for triggering air supply of a ventilator, in particular to a method for triggering air supply of a ventilator by using an electromyogram of an esophageal electrode diaphragm. Background technique [0002] The application of positive pressure ventilator for artificial ventilation is an important measure to rescue respiratory failure caused by various reasons, and it is more and more commonly used in clinical practice. Man-machine synchronization means that the timing of the ventilator's air delivery is consistent with the patient's inspiratory defect start time, the ventilator's air supply process is consistent with the patient's instantaneous inspiratory demand, and the timing of the ventilator's inhalation-exhalation transition is consistent with the patient's. Synchronized assisted breathing is beneficial to the distribution of gas in the lungs, reduces the disuse atrophy of respiratory muscles, and is beneficial to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/00
Inventor 郑则广陈荣昌王思华钟南山
Owner THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
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