Rat leg muscle electrical stimulation and electromyographic signal acquisition flexible device and manufacturing method

Abstract

The invention provides a rat leg muscle electrical stimulation and electromyographic signal acquisition flexible device and a manufacturing method. The flexible device is provided with multiple independent finger electrodes. A certain gap exists between every two finger electrodes. Each finger electrode is provided with a plurality of stimulation electrodes at certain intervals, and a plurality of ground electrodes are distributed around each stimulation electrode and used for effectively controlling the current diffusion range and accurately controlling the electrical stimulation area. A plurality of recording electrodes are distributed on the central symmetry line of the whole flexible device, and reference electrodes are distributed near the recording electrodes. A micro-electrical stimulation interface and an electromyographic signal acquisition interface are integrated on the flexible device at the same time, micro-electrical stimulation can be exerted synchronously, and electromyographic signals at different positions are recorded. The functional electrical simulation and the electromyographic signal acquisition function are integrated, the optimized device structure and polymer material flexibility guarantee that shape preserving is good during attachment, and stimulation current and electrophysiologic signals are effectively transmitted.

Description

technical field [0001] The invention relates to a microelectrode in the technical field of biomedical engineering, in particular to a flexible device for electrical stimulation of rat leg muscles and collection of electromyographic signals and a preparation method thereof. Background technique [0002] Paralysis, the reduction or loss of voluntary motor function, is a common symptom of the nervous system. Paralysis is caused by upper and lower motor neurons, pyramidal tract and peripheral neuropathy. A large area of ​​muscle paralysis will seriously affect the quality of life of the patient and cause a heavy burden on the family and society. At present, the main rehabilitation methods include traditional methods such as equipment training, drug assistance, and traditional Chinese medicine acupuncture, which have a certain recovery effect on mild and short-term muscle paralysis, and the basis of paralysis rehabilitation is based on the integrity of the human nervous system to...

AI Technical Summary

Problems solved by technology

It is limited to the use of wire electrodes for muscle electrical stimulation, with low resolution and integration, so the contraction of muscles on the arm cannot achieve more complex movements

[0006] Guo L, Guvanasen G S, Liu X et al wrote in IEEE transactions on biomedical circuits and systems, 2013, 7(1): 1-10: "A PDMS-based integrated stretchablemicroelectrode array(isMEA) for neural and muscular surface interfacing", proposing A stretchable microelectrode array based on PDMS flexible material with a thickness of 60 microns and good shape retention was developed. By applying a 40Hz, 100 microsecond, 0.8V square wave voltage to the left tibial nerve of the cat, the opposite side During the process of extensor reflex, the EMG signal of the gastrocnemius muscle on the inner side of the right limb was measured. The disadvantage of this flexible device is that it uses PDMS with poor airtightness as the package, the coverage area is small, the number of recording electrodes is small, and only EMG signals can be recorded separately

However, the stimulating electrodes and recording electrodes are used separately, the relative positions of the electrodes are uncertain, and the coverage is small

[0008] To sum up, most of the currently reported flexible devices for muscle electrical stimulation and EMG signal acquisition are stimulation and acquisition separation, and the electrical stimulation lacks good spatial resolution to achieve precise and complex movements.

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