Porous coatings on electrodes for biomedical implants
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United States of America Patent
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Issued Date -
Jan 19, 2006
app pub date -
Jul 13, 2005
filing date -
Jul 13, 2004
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Abandoned
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Abstract
An implantable electrode has a biomedically compatible, microscopically rough, metal coating that creates a high double-layer capacitance. The coating is applied to the implant by physical vapor deposition. The coating preferably is applied via a generally oblique coating flux or a low energy coating flux. In some embodiments, the coating has pores. The pores can contain a drug, which can diffuse over a period of time. The coating may be partially nonporous to protect the implant from corrosion.
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