发明名称 |
RETINAL PROSTHESIS WITH SEPARATE CENTRAL ELECTRODE ARRAY AND PERIPHERAL ELECTRODE ARRAY |
摘要 |
The artificial percept of light may be created by electrically stimulating the neurons of the retina. While a photolithographed array internal to the retina provides superior resolution, an array external to the retina provides easier implantation and improved manufacturability. Therefore it is advantageous to supply a high-resolution electrode array internal to the sclera, near the fovea and a lower-resolution electrode array external to the sclera near the periphery of the retina. The preferred method of manufacturing a high-resolution electrode array is through photolithography, which requires the array to be made flat. While it is possible to curve the array afterward, it is difficult and costly. I small high-resolution array can be implanted near the fovea. Due to its small size, curvature is less of an issue. A larger lower-resolution array can be molded in silicone or similar method and placed around the periphery, of the retina, where the retina is naturally lower resolution. Further, the lower-resolution array can be implanted external to the sclera reducing the number of electrical connectors passing through the sclera. Even if a separate lower-resolution array is implanted internal to the sclera, super-choroidal (between the choroid and sclera) or intra-scleral (between the layers of the sclera), it is easier to make a lower-resolution array in a curved shape. |
申请公布号 |
WO2006119468(A3) |
申请公布日期 |
2006.12.21 |
申请号 |
WO2006US17282 |
申请日期 |
2006.05.04 |
申请人 |
SECOND SIGHT MEDICAL PRODUCTS, INC.;GREENBERG, ROBERT, JAY;HUMAYUN, MARK |
发明人 |
GREENBERG, ROBERT, JAY;HUMAYUN, MARK |
分类号 |
A61N1/36;A61F9/08;A61N1/05 |
主分类号 |
A61N1/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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