Visual function restoration system based on external electrical stimulation by endocranium

Abstract

The invention relates to the technical field of medical equipment, in particular to a visual function restoration system. Compared with the existing visual restoration system based on visual cortex stimulation, the visual function restoration system of the invention performs electrical stimulation on visual cortex by endocranium; and an implant is placed on the endocranium, the endocranium does not need to be opened in the operation process, thus avoiding risks such as operation infection, cerebrospinal fluid leakage and the like. The visual function restoration system comprises an image acquisition module, an image information extraction and compression coding module, an electrical stimulation signal generation module and a microelectrode array, wherein the image information extraction and compression coding module acquires image information by the image acquisition module, and then generates digital image and a control signal corresponding to the image information by compression coding processing; the electrical stimulation signal generation module controls the microelectrode array to output a corresponding electrical stimulation signal according to the control signal output by the image information extraction and compression coding module; and the microelectrode array is used for outputting the electrical stimulation signal.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a visual function restoration system. Background technique [0002] According to the report of the World Health Organization, more than 160 million people around the world suffer from varying degrees of vision impairment, of which about 45 million people suffer from blindness. Clinical data show that retinal degenerative diseases, such as retinitis pigmentosa (RP), age-related macular degeneration (Age-Related macular Degeneration, AMD), etc., are the main diseases causing blindness. People try multiple methods such as operation and medicine to help patients recover their eyesight, but the effects of various methods are not satisfactory at present. The research and development of implantable nerve electrical stimulation technology to reconstruct visual function is becoming an important direction for blind or near-blind patients to regain part of their visual function. ...

AI Technical Summary

Problems solved by technology

[0007] A comprehensive analysis of the above three visual prosthesis repair technologies shows that retina-based vision repair requires more than 30% of the residual function of the blind patient's retina; optic nerve-based vision repair also relies on blind patients with good retinal residual function, and the operation is difficult ; The visual cortex is the highest center of vision, and the visual repair based on the visual cortex is suitable for the visual function restoration of various types of blind patients except cortical lesions. However, because the existing research uses microelectrode arrays to directly stimulate the visual cortex, There are risks of surgical infection and cerebrospinal fluid leakage

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