Platinum electrode and method for manufacturing the same
AssigneeSecond Sight Medical Products, Inc.
InventorDao Min Zhou
Life of this patent
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Abstract
An improved electrode and method for manufacturing the improved electrode wherein the electrode having a fractal surface coating of platinum [which the present inventor refers to as “platinum gray”] with a increase in surface area of at least 5 times when compared to shiny platinum of the same geometry and also having improved resistance to physical stress when compared to platinum black having the same surface area. The process of electroplating the surface coating of platinum gray comprising plating at a moderate rate, i.e., at a rate that is faster than the rate necessary to produce shiny platinum and that is less than the rate necessary to produce platinum black.
Claims38
An electrode comprising:
- an electrode body;
- and
- a surface coating of platinum having a fractal configuration.
A method for electroplating a platinum surface coating such that surface has a rough surface coating comprising:
- electroplating the surface of a conductive substrate at a rate such that the particles of platinum form on the conductive substrate faster than necessary to form shiny platinum and slower than necessary to form platinum black.
An electrode with a rough surface coating of platinum wherein:
- the surface coating is electroplated to the surface of a conductive substrate at a rate such that the particles of platinum form on the conductive substrate faster than necessary to form shiny platinum and slower than necessary to form platinum black.
An implantable electrode comprising:
- a conductive substrate;
- and
- a rough surface coating having a fractal configuration with between 5 times the surface area and 500 times the surface area of that for the corresponding surface area resulting from the basic geometric shape of the electrode.
Dependencies are inferred from the claim text.