Surface modification of medical implants
AssigneeEtex Corporation
InventorsDosuk D. Lee, Atul Nagras
Life of this patent
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Abstract
A method of obtaining a porous titanium surface suitable for medical implants is provided. The titanium surface is exposed to a plasma comprising a reactive plasma gas, the reactive plasma gas comprising an active etching species and a sputtering gas. The plasma conditions are effective to modify the titanium surface and provide surface porosity. The plasma conditions are effective to non-uniformly etch and sputter the titanium surface.
Claims25
An article, comprising:
- a metallic substrate having a surface comprising metallic filamentous elements having a length of about one to fifteen micrometers, each filamentous element having a first end integral with the substrate and extending in a substantially outward direction from the substrate, wherein at least two filamentous elements have spaced apart first ends and merge at a location a distance from the substrate.
An article, comprising:
- a metallic substrate having a surface comprising metallic filamentous elements, each filamentous element having a first end integral with the substrate and extending in a substantially outward direction from the substrate, wherein at least one plurality of filamentous elements collectively form a pattern, each plurality of filamentous elements collectively defining a wall or a ridge on the surface of the substrate.
The article of claim , wherein the irregular morphology forms a pattern defining tufts of filamentous elements on the surface of the substrate.
An article, comprising:
- a metallic substrate having a surface comprising metallic filamentous elements having a length of about one to fifteen micrometers, each filamentous element having a first end integral with the substrate and extending in a substantially outward direction from the substrate, wherein at least one plurality of filamentous elements are joined at first ends and expand outwardly from the joined ends.
The article of claim , wherein a plurality of the outwardly extending filamentous elements collectively provides a morphology resembling a member of the group consisting of fingers, tufts, sponges and fans.
An article, comprising:
- a metallic substrate having a surface comprising metallic filamentous elements, each filamentous element having a first end integral with the substrate and extending in a substantially outward direction from the substrate, wherein a plurality of filamentous elements are positioned and arranged to collectively define undercuts with respect to the surface of the substrate.
Dependencies are inferred from the claim text.