Implant with composite coating
AssigneeHayes Medical, Inc.
InventorsAlfred S. Despres, III, Eugene J. Elwood, Robert R. Aharonov, Peter Ehlers, Knut Andersen
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Abstract
Systems and methods are described for implants with composite coatings to promote tissue in-growth and/or on-growth. An implant includes: a substrate; a structured surface formed on at least a portion of the substrate; and a biocompatible coating deposited on at least a fraction of the structured surface. The systems and methods provide advantages in that the implant has good biocompatibility while the biocompatible coating has good strength.
Claims19
An osteoconductive process comprising:
- providing an implant comprising:
- a substrate;
- a structured surface formed on at least a portion of the substrate, the structured surface being of the same material as the substrate;
- and
- a biocompatible coating deposited by a selected one of (i) arc evaporation physical vapor deposition and (ii) chemical vapor deposition on at least a fraction of the structured surface, the coating being softer and more biocompatible than the substrate and the structured surface;
- testing for the presence of high adhesion between the coating and the structured surface;
- and
- contacting a bone under in vivo conditions with the implant.
An osteoconductive process-comprising:
- providing a composition for an implant, the composition comprising a biocompatible material coated by a selected one of (i) arc evaporation physical vapor deposition and (ii) chemical vapor deposition on a structured surface defined by a substrate, the coating being softer and more biocompatible than the substrate and the structured surface;
- testing for the presence of high adhesion between the coating and the structured surface, and
- contacting a bone under in vivo conditions with the composition.
A method for orthopedic surgery which comprises:
- providing an implant comprising:
- a substrate;
- a structured surface formed on a portion of the substrate, the structured surface being of the same material as the substrate;
- and
- a biocompatible coating deposited by a selected one of (i) arc evaporation physical vapor deposition and (ii) chemical vapor deposition on at least a fraction of the structured surface, the coating being softer and more biocompatible than the substrate and the structured surface;
- testing for the presence of high adhesion between the coating and the structured surface;
- and
- contacting a bone under in vivo conditions with the implant;
- wherein the portion of the substrate is fixed with at least one of tissue in-growth and tissue on-growth for stability.
An osteoconductive process comprising:
- providing an implant, the implant comprising:
- a substrate;
- a structured surface formed on a portion of the substrate, the structured surface being of the same material as the substrate;
- and
- a biocompatible coating deposited by a selected one of (i) arc evaporation physical vapor deposition and (ii) chemical vapor deposition on at least a fraction of the structured surface, the coating being softer and more biocompatible than the substrate and the structured surface;
- testing for the presence of high adhesion between the coating and the structured surface;
- and
- contacting a bone under in vivo conditions with the implant;
- wherein the portion of the substrate is fixed with a selected one of tissue in-growth and tissue on-growth for stability.
A method of forming a composite coating, the method comprising:
- depositing a biocompatible coating on a structured surface that comprises at least a portion of a surface area of a substrate;
- wherein depositing the biocompatible coating includes depositing a coating that is more biocompatible than the structured surface;
- wherein depositing the biocompatible coating includes depositing a coating that is softer than the structured surface.
Dependencies are inferred from the claim text.