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US 2003/0149458 A1Published application
Retinal prosthesis with remote return electrode
AssigneeSecond Sight Medical Products, Inc.
InventorsRichard P. Williamson, Jerry Ok, Robert J. Greenberg
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Abstract
The present invention is an improved retinal electrode array with a remote return electrode outside of the eye. An array of stimulating electrodes is placed on the retinal surface (epiretinally) or under the retina (subretinally) and a large return electrode is placed outside of the sclera and distant from the array of stimulating electrodes. The remote return electrode promotes deeper stimulation of retinal tissue.
Claims22
A retinal prosthesis comprising:
- a stimulating electrode array inside an eye surrounded by a sclera;
- a return electrode outside of the sciera;
- and
- an electrical circuit coupling said stimulating electrode array with said return electrode.
1 more element
A retinal prosthesis comprising:
- a stimulating electrode array inside an eye surrounded by a sclera, plan electrical circuit driving said stimulating electrode array in accordance with a visual image;
- a light receiver for receiving said visual image and providing said visual image to said electrical circuit;
- and
- a return electrode outside of the sclera and coupled to said electrical circuit.
1 more element
A method of passing current through a retina comprising:
- providing a stimulating electrode array near a retina;
- energizing said stimulating electrode array;
- and
- providing a return electrode outside of the sclera.
1 more element
Dependencies are inferred from the claim text.