Implantable visual prosthesis nerve stimulator

Abstract

The invention relates to an implantable visual prosthesis nerve stimulator, which comprises an extracorporal module for acquiring, processing, modulating, sending and storing external image information, an intracorporal implantation module for receiving energy and data information which are sent by the extracorporal module and drives an electrode to stimulate optic nerves by a microcurrent stimulator chip and a radio frequency identification percutaneous channel for transmitting energy and a signal to the intracorporal implantation module from the extracorporal module, wherein the extracorporal module comprises a high-order modulation circuit; and the microcurrent stimulator chip comprises an analog / digital mixing high-order demodulation circuit. According to the implantable visual prosthesis nerve stimulator, contradiction among the high transmission rate of data, high-efficiency transmission of the energy and the size of a coil in the prior art is avoided by utilizing a high-order system circuit, and the optimization of the high transmission rate of the data and the high-efficiency transmission of the energy is realized on the premise of reducing the size of the wireless transmission coil.

Description

technical field [0001] The invention belongs to the field of biomedical electricity, and relates to an implantable visual prosthesis nerve stimulator for restoring the visual function of blind people. Background technique [0002] According to the report of the World Health Organization, there are about 140 million visually disabled patients in the world, of which 45 million are blind. China is the country with the largest number of blind people in the world. There are nearly 13 million visually disabled patients, of whom about 5.5 million are blind. In recent years, scientists all over the world are devoting themselves to the research and exploration of effective means to replace retinal function with visual prosthesis to restore visual function. The principle is to use a visual prosthesis to collect external image information, perform encoding processing, and act on the visual nervous system through a micro-current stimulator, thereby generating visual perception in the n...

AI Technical Summary

Problems solved by technology

However, a new problem arises: for the wireless transmission system with skin and biological tissue as the channel, the high-frequency carrier is obviously absorbed by the skin and biological tissue. For data transmission, in order to obtain high-quality and high-resolution visual effects, the data transmission rate must be increased, and it is hoped to use a higher frequency for data transmission

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