Electrophysiology Device with Electrodes Having Increased Surface Area
AssigneeSt. Jude Medical, Cardiology Division, Inc.
InventorsDerek Sutermeister, Edward E. Parsonage, Gregory K. Olson
Life of this patent
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Abstract
A medical device includes a body and at least one electrode disposed thereon. The electrode includes a metallic substrate, such as a platinum group metal, an alloy of platinum group metals, or gold. The surface of the substrate is modified in a manner that increases its effective surface area without inducing bulk heating. For example, the surface of the substrate can be laser textured and/or coated, such as with titanium nitride or iridium oxide.
Claims28
1-25. (canceled)
A method of manufacturing a medical device, comprising:
- forming a medical device body;
- forming at least one electrode according to a process comprising:
- forming a metallic substrate;
- applying a coating to a surface of the metallic substrate;
- and
- treating the surface of the metallic substrate in a manner that increases a surface area of the metallic substrate and that reduces resistance of the metallic substrate when operating at a frequency within a cardiac medical range;
- and
- securing the at least one electrode to the medical device body.
A medical device, formed according to a process comprising:
- forming a medical device body;
- forming at least one electrode according to a process comprising:
- forming a metallic substrate;
- applying a coating to a surface of the metallic substrate;
- and
- treating the surface of the metallic substrate in a manner that increases a surface area of the metallic substrate and that reduces resistance of the metallic substrate when operating at a frequency within a cardiac medical range;
- and
- securing the at least one electrode to the medical device body.
A medical device comprising:
- a medical device body;
- at least one electrode secured to the medical device body, the at least one electrode comprising:
- a metallic substrate having a surface, wherein the surface includes a surface treatment that increases a surface area of the metallic substrate and that reduces resistance of the metallic substrate when operating at a frequency within a cardiac medical range;
- and
- a coating applied to the surface of the metallic substrate.
Dependencies are inferred from the claim text.