EMG Signal Acquisition And Processing Of Unilateral Laryngeal Pacing

Unilateral recurrent laryngeal nerve damage caused by unilateral vocal cord paralysis is common in clinical medicine,and dynamic physiological functions are lost by traditional static surgical treatment of unilateral vocal cord.Aimed at the improvement of vocal dynamic physiological functions,research on EMG signal acquisition and processing of unilateral laryngeal pacing was launched in this thesis.The mechanism of unilateral laryngeal pacing,EMG basic theory,and functional electrical stimulation basic theory were presented about the study of unilateral laryngeal pacing.The system of EMG signal acquisition and processing of unilateral laryngeal pacing including hardware and software was designed.The animal pre-experiment of instrument system validation and the unilateral vocal cord acute animal experiments were completed.The weak signal amplification,high CMRR,filter design,EMG envelope extraction,EMG processing,and voltage to current convertor were included in instrument systems.The acquisition and processing of EMG,EMG offline analysis,and digital image processing of vocal cord movement were included in software design.The acquisition of EMG analysis,vocal pacing stimulus alone,synchronization with the intact vocal cord from cricothyroid were completed in acute animal experiments.Combined with software,the results were assessed.According to the data analysis of animal experiments,the injury side synchronizing with the intact side has been improved.The availability of instrument system is proved in unilateral laryngeal pacing research.This research is helpful to promote the development of EMG recording and analysis,and also promote the application of functional electrical stimulation in improving the physiological function of the neuromuscular system.It has practical significance and broad prospects in clinical medicine.