Wireless charge controllable nerve stimulator and device

Abstract

The invention discloses a wireless charge controllable nerve stimulator and device. The nerve stimulator comprises an antenna coil, a circuit part, a stimulation electrode anode and a stimulation electrode cathode; and the circuit part comprises a tuning capacitor, a rectifier, a Zener diode, a filtering capacitor, a bias resistor, a blocking diode, a charging resistor, an output capacitor and a unijunction transistor. According to the invention, it is ensured that small-size unit can be implanted, charge is used to control the stimulation output intensity, the circuit uses common discrete components, the circuit structure is simple, the cost is low, the reliability is high, it is not required to prepare a special integrated circuit chip, realization is convenient and rapid, the transplantability is high, and values of the discrete components can be modified simply to realize different stimulation functions of the nerve stimulator.

Description

technical field [0001] The invention belongs to the field of nerve stimulation, in particular to a wireless charge controllable nerve stimulator and device. Background technique [0002] It is well known that extracellular electrical stimulation of, for example, neurons or muscle fibers can replace normal nerve stimulation is common knowledge in the biophysics community. The basic requirement is to induce the transmembrane current to polarize the cell membrane area, so that it can reach the threshold value that can open the sodium ion channel of the nerve axon from the resting potential, and then the effect of transmitting the action potential can be achieved. The cell membrane acts as a charging capacitor in series with the interstitial fluid within the cell as an impedance, and the stimulation pulse must generate a sufficient voltage gradient in time and space to induce the desired transmembrane current. Traditionally, it is necessary for the square wave current to last f...

AI Technical Summary

Problems solved by technology

[0003] Prior art neural stimulators have complex circuitry for stimulating via electrical charge rather than voltage or current for stimulation pulses, including multiple sensing and control circuits

Usually, neurostimulators require a small size and light weight design, which requires an application-specific integrated circuit chip (ASIC), which is expensive and time-consuming to develop, manufacture, and test.

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