Extraocular electrode array equipment for local electric stimulation of retina

Abstract

Disclosed is extraocular electrode array equipment for local electric stimulation of the retina. The equipment comprises an eyeball front stimulation electrode array, an eyeball rear recovery electrode array and a programmable multi-channel micro-current stimulator; the eyeball front stimulation electrode array and the eyeball rear recovery electrode array carry out electric stimulation, the programmable multi-channel micro-current stimulator is connected with the eyeball front stimulation electrode array and the eyeball rear recovery electrode array separately and transmits electric stimulation signals with different parameters according to actual stimulation demands, and a direct stimulation mode is adopted for large-area regional electric stimulation or an interference stimulation mode is adopted for local electric stimulation. The equipment can be used for electric stimulation treatment on the local region of the retina, and can also serve as a stimulation method of a minimally-invasive retinal prosthesis to induce the artificial visual experience with a large field of view.

Description

technical field [0001] The invention relates to a technology in the field of medical devices, in particular to an external eyeball electrode array device for local electrical stimulation of the retina. Background technique [0002] Existing electrical stimulation devices for repairing visual damage include: transcorneal electrical stimulation devices and retinal prosthesis electrical stimulation devices. Among them, the transcorneal electrical stimulation device uses single-electrode stimulation, which only applies a large-scale diffuse stimulation to the retina, without spatial convergence, and cannot achieve more local selective stimulation in space. However, since only local tissue lesions occur in patients with early and mid-stage retinal diseases, this diffuse stimulation method may overstimulate the non-lesional areas of the retina, resulting in unnecessary damage to normal tissues. However, the current retinal prosthesis needs to implant the electrode structure insid...

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Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes an external eyeball electrode array device for local electrical stimulation of the retina, which can be used for electrical stimulation of a local area of ​​the retina, and can be used as a minimally invasive retinal prosthesis stimulation method to meet the need to induce artificial visual perception

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