Constant current type transcutaneous nerve electrical stimulation circuit

Abstract

The invention discloses a constant current type transcutaneous nerve electrical stimulation circuit comprising a microcontroller, a power supply circuit, an indication circuit, an output circuit and amotion detection circuit. The microcontroller is electrically connected with the power supply circuit, the indication circuit, the output circuit and the motion detection circuit; the output circuitis connected with a stimulation electrode; the stimulation electrode is provided with the motion detection circuit; and the output terminal of the motion detection circuit is connected with the microcontroller. The invention employs a percutaneous positioning method and belongs to a non-invasive positioning technology. After positioning to the nerve, acousto-optic indication can be made to avoid unnecessary trauma to the human tissue, so that objective evaluation of nerve positioning is realized. With the motion detection technology, the stimulation current output can be flexibly adjusted according to the motion conditions of corresponding muscle groups, so that accurate and controllable constant-current stimulation on tissue is realized.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a constant-current transcutaneous electrical nerve stimulation circuit. Background technique [0002] Excitable tissues that make up neuromuscular groups respond to stimuli such as heat, light, sound, pressure, and chemicals, as well as electrical stimuli. During excitable tissue activity, various ions, mainly sodium and potassium ions, rapidly cross the cell membrane, causing transient changes in cell membrane permeability. This movement of ions creates an electric current that creates an electric field on the surface of the body. It is also possible to reverse this process and apply an external current stimulus to establish an ion current in the excitable tissue area. [0003] Clinically, in order to restore human body functions or treat diseases, electric current is directly applied to the human body through electrical stimulation. During electrical stimulation, the...

AI Technical Summary

Problems solved by technology

Although the square wave pulse can depolarize the neural membrane, it is generally not used in clinical practice due to its effect on tissue stimulation and electrolysis of the electrode, and the use of a charge-balanced pulse waveform can significantly reduce the electrochemical effect

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