Mechanical piece with improved deformability
AssigneeHexacath
InventorsGilles Ascher, Johannes Lammer
Life of this patent
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Abstract
The invention relates to a mechanical piece having a structure comprising a substrate (1) and at least one surface coating layer (3) of nanometric thickness, for improving mechanical resistance, characterized in that it comprises between the substrate and the surface coating layer an essentially non ceramic, non porous adhesion layer of nanometric size; and said surface coating layer is an essentially non porous barrier layer (2) consisting essentially of an essentially stoechiometric titanium nitride layer.
Claims13
A stent having improved mechanical resistance, having a structure comprising a substrate, an essentially non porous metallic adhesion first coating layer of nanometric size, at least one essentially non porous ceramic barrier second coating layer of nanometric size of essentially stoichiometric titanium nitride over said adhesion first coating layer;
- and further comprising, over the second coating layer of titanium nitride, a surface third coating layer of nanometric size essentially non porous, essentially consisting of titanium oxide nitride;
- wherein said metallic adhesion first coating layer provides plastic deformability to the essentially non porous ceramic barrier second coating layer.
A stent having improved mechanical resistance, having a structure comprising:
- a substrate selected from the group consisting of a metal, a metal alloy, a stainless steel, titanium, a titanium alloy, and a shape memory alloy;
- an essentially non porous metallic adhesion first coating layer of nanometric size;
- at least one essentially non porous ceramic barrier second coating layer of nanometric size of essentially stoichiometric titanium nitride over said adhesion first coating layer;
- and
- further comprising, over the second coating layer of titanium nitride, a surface third coating layer of nanometric size essentially non porous, essentially consisting of titanium oxide nitride;
- wherein said metallic adhesion first coating layer provides plastic deformability to the essentially non porous ceramic barrier second coating layer.
Dependencies are inferred from the claim text.