SURFACE MODIFIED ELECTRODES
First Claim
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1. A method for forming an implantable electrode comprising:
- exposing a conductive surface of the implantable electrode with a first application of an excimer laser; and
creating a first surface texture on a conductive surface with a second application of the excimer laser.
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Abstract
A method for forming an implantable electrode (100) includes exposing a conductive surface of the electrode (100) with a first application of an excimer laser (215) and creating a first surface texture on a conductive surface with a second application of the excimer laser. In one example, a low impedance implantable electrode includes a conductive surface and a coating disposed over the conductive surface. The coating may have a lower contact impedance with biological tissue than the conductive surface. At least a portion of the coating has an excimer laser textured surface.
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Citations
18 Claims
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1. A method for forming an implantable electrode comprising:
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exposing a conductive surface of the implantable electrode with a first application of an excimer laser; and creating a first surface texture on a conductive surface with a second application of the excimer laser. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for adhering a coating to an implantable electrode comprises:
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structuring a surface of the implantable electrode with an excimer laser to form surface texture with overhanging surface features; disposing an impedance reducing coating on the surface, wherein the impedance reducing coating mechanical overlooks with the overhanging surface features.
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17. A method for forming an implantable electrode comprising:
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rastering an excimer laser beam over an electrode surface to form a first surface texture with a high aspect ratio roughness; rastering the excimer laser beam over the first surface texture to form a second surface texture with a lower aspect ratio roughness; and disposing an overcoat over the implantable electrode, wherein the overcoat adheres to the implantable electrode by mechanically overlooking around features of the second texture, wherein the overcoat comprises a higher active surface area than the second surface texture.
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18. A low impedance implantable electrode comprising:
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a conductive surface; a coating disposed over the conductive surface, the coating comprising a lower contact impedance with biological tissue than the conductive surface; and an excimer laser textured surface on the coating.
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Specification