High-density electrode electrical stimulation device for multi-modal signal acquisition

Abstract

The invention discloses a high-density electrode electrical stimulation device for multi-modal signal acquisition, and belongs to the field of medical instruments. The high-density electrode electrical stimulation device comprises a myoelectric acquisition / electrical stimulation output circuit board, an A-mode ultrasonic signal acquisition circuit board and an FSR thin-film force sensor signal acquisition circuit board which are connected with a high-density electrode, an A-mode ultrasonic probe and an FSR thin-film force sensor correspondingly; the three circuit boards are all provided with main control chip circuits, and configured to be in a master-slave working mode; and the three circuit boards share a power management circuit and a communication circuit which are arranged on one of the three circuit boards. Myoelectric signal acquisition, A-mode ultrasonic signal acquisition, FSR thin-film force sensor signal acquisition and electrical stimulation output are integrated in the level of software and hardware, can be carried out individually and can be also carried out synergistically, and thus multiple functions such as multi-modal sensing and self-feedback functional electrical stimulation are achieved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a high-density electrode electrical stimulation device for multimodal signal acquisition. Background technique [0002] Electromyography (EMG) is a method of using electronic instruments to record the electrical activity of muscles at rest or during contraction, and to use electrical stimulation to examine nerve and muscle excitation and conduction functions. This examination can determine the functional status of peripheral nerves, neurons, neuromuscular junctions, and the muscle itself. [0003] The application of ultrasonic signal detection technology in the field of modern medicine is mainly ultrasonic diagnosis and ultrasonic treatment. Because ultrasound has the characteristics of no ionizing radiation, harmless to human body and low manufacturing cost, in the past 20 years, researchers have begun to explore and try to apply their research results to the field of human-m...

AI Technical Summary

Problems solved by technology

[0011] 1) The separation of equipment leads to a large overall volume, high price and complicated operation;

[0012] 2) The separation of equipment makes it difficult to realize self-feedback and adjustment of EMG signals and electrical stimulation signals, to evaluate the effect of electrical stimulation through EMG signals, and to realize functions such as automatic adjustment of electrical stimulation parameters through analysis of EMG signals;

[0013] 3) When the equipment is separated, the interference brought by the electrical stimulation current signal to the acquisition of the EMG signal can only be reduced by software processing, and it is difficult to optimize the signal quality at the hardware level;

[0015] 4) In the time-sharing working mode, on the one hand, the electrical stimulation signal also has some interference, and the myoelectric signal collected at the same time is missing, which is not exactly caused by the muscle contraction caused by the electrical stimulation;

[0016] 5) Exercising for a long time will cause muscle fatigue, and the quality of the EMG signal will decrease significantly. The analysis and evaluation of a single EMG signal is not reliable;

[0017] 6) The existing myoelectric stimulation integrated equipment is affected by muscle fatigue and long-term electrical stimulation leading to poor muscle response, so it is difficult to ensure long-term effective use;

[0019] 7) When high-density electrodes are used alone as acquisition electrodes or stimulation electrodes, only a few pairs of electrodes are often used, and high-density electrodes are not fully utilized.

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