Flexible Electrode Array for Artificial Vision
First Claim
1. A method of processing an electrode array for connection to tissue containing cells, comprising the steps of:
- implementing initial processing steps on a polymer substrate that has theability to conform to various shapes of said tissue,plating or otherwise depositing a conductive material on said polymer substrate to form electrodes on said polymer substrate for contacting said tissue,patterning conducting lines on said polymer substrate, andimplementing final processing steps on said polymer substrate.
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Accused Products
Abstract
An image is captured or otherwise converted into a signal in an artificial vision system. The signal is transmitted to the retina utilizing an implant. The implant consists of a polymer substrate made of a compliant material such as poly(dimethylsiloxane) or PDMS. The polymer substrate is conformable to the shape of the retina. Electrodes and conductive leads are embedded in the polymer substrate. The conductive leads and the electrodes transmit the signal representing the image to the cells in the retina. The signal representing the image stimulates cells in the retina.
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Citations
13 Claims
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1. A method of processing an electrode array for connection to tissue containing cells, comprising the steps of:
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implementing initial processing steps on a polymer substrate that has the ability to conform to various shapes of said tissue, plating or otherwise depositing a conductive material on said polymer substrate to form electrodes on said polymer substrate for contacting said tissue, patterning conducting lines on said polymer substrate, and implementing final processing steps on said polymer substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system of fabricating a flexible electrode array, comprising the steps of:
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spin-coating a poly(dimethylsiloxane) layer onto a handle wafer that has been pre-coated with a conductive seed layer; patterning said poly(dimethylsiloxane) layer to expose said conductive seed layer to form electrodes; plating said electrodes until said electrodes are higher than the thickness of said poly(dimethylsiloxane) layer and until said electrodes form mushroom caps which later will prevent said electrodes from popping out of said poly(dimethylsiloxane) layer when said poly(dimethylsiloxane) layer is removed from said handle wafer; and patterning conducing lines on said poly(dimethylsiloxane) layer. - View Dependent Claims (10, 11, 12, 13)
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Specification