Peripheral nerve electrical stimulator

Abstract

The invention relates to a peripheral nerve electrical stimulator, which comprises an ultrasonic scanning stimulus ring and a signal generation and control module, wherein the ultrasonic scanning stimulus ring comprises at least one ultrasonic scanning probe and two groups of electrode arrays; the signal generation and control module comprises an ultrasonic scanning control module, an isolation constant-current source generation module, a total controller module and a switch array selection module, wherein the ultrasonic scanning control module is configured to control the ultrasonic scanningprobe to scan the limb and determine the position information of the nerve according to ultrasonic image information obtained by scanning; the isolation constant-current source generation module is used for generating a kHz sinusoidal current with a frequency difference; the total controller module is configured to select an electrode required for electrical stimulus on the basis of the position information and determine a current ratio of a stimulus current so as to enable a stimulus focal point to be positioned in the nerve area; and the switch array selection module selects the electrode toenable the nerve to receive the electrical stimulus through an electric field generated by the conducted electrode. The stimulator does not need to move the position of the electrode and does not require other means to realize the fixed-point selective nondestructive stimulus of peripheral nerves.

Description

technical field [0001] The present invention relates to a peripheral nerve electric stimulator, more specifically, relates to an instrument for selective non-destructive electric stimulation of peripheral nerves by using ultrasonic image positioning. Background technique [0002] Peripheral nerve stimulation has important medical value, such as for sports rehabilitation and chronic neuralgia treatment. There are many ways to achieve this, the most commonly used are peripheral nerve stimulation (Peripheral NerveStimulation, PNS) based on implanted electrodes and transcutaneous electrical nerve stimulation (Transcutaneous Electric Nerve Stimulation, TENS), the former is an invasive method that can Accurate positioning is achieved, the latter has the advantage of being non-invasive, but lacks spatial selectivity. [0003] Spatially selective methods for noninvasive electrical stimulation of peripheral nerves remain an open question. The earliest attempt was the coherent curre...

AI Technical Summary

Problems solved by technology

However, the stimulation area of ​​IFC is quite large, uncontrollable, and still limited to relatively superficial tissues

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