Sintered Coatings For Implantable Prostheses
First Claim
Patent Images
1. A prosthesis having an outer surface that bears at least two layers of metal particles, wherein:
- one of said at least two layers is an outermost layer consisting essentially of substantially aspherical metallic particles having a mean particle size of 50 to 500 microns; and
at least one of said at least two layers is an intermediate layer that is disposed between said outermost layer and said outer surface and consists essentially of substantially spherical metallic particles having a mean particle size of 50 to 500 microns.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention concerns articles having an outer surface that bears at least two layers of metal particles, wherein the at least two layers comprise an outermost layer and an intermediate layer; the outermost layer consisting essentially of aspherical metallic particles having a mean particle size of 50 to 500 microns; and the intermediate layer consisting essentially of substantially spherical metallic particles having a mean particle size of from 50 to 500 microns. In some embodiments, the outer surface has a volume porosity of between about 20% to about 80%.
107 Citations
28 Claims
-
1. A prosthesis having an outer surface that bears at least two layers of metal particles, wherein:
-
one of said at least two layers is an outermost layer consisting essentially of substantially aspherical metallic particles having a mean particle size of 50 to 500 microns; and at least one of said at least two layers is an intermediate layer that is disposed between said outermost layer and said outer surface and consists essentially of substantially spherical metallic particles having a mean particle size of 50 to 500 microns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An article having an outer surface that bears at least two layers of metal particles, wherein:
-
said at least two layers comprise an outermost layer and an intermediate layer; said outermost layer consisting essentially of aspherical metallic particles having a mean particle size of 50 to 500 microns; and said intermediate layer consisting essentially of substantially spherical metallic particles having a mean particle size of from 50 to 500 microns. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. The article of clam 11, wherein the outer surface has a volume porosity of between about 20% to about 80%.
-
19. A method comprising:
-
providing a substrate; applying one or more coatings of substantially spherical metallic particles on said substrate, said spherical metallic particles having a mean particle size of from 50 to 500 microns; applying one or more additional coatings on said spherical metallic particles, said additional coatings comprising aspherical metallic particles having a mean particle size of 50 to 500 microns; and metallurgically sintering said particles onto the substrate. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
-
26. In a method for implanting a prosthesis in a human or animal body in contact with bone, the improvement comprising at least a portion of the prosthesis in contact with said bone having a surface bearing at least two layers of metal particles, wherein:
-
said at least two layers comprise an outermost layer and an intermediate layer; said outermost layer consisting essentially of aspherical metallic particles having a mean particle size of 50 to 500 microns; and said intermediate layer consisting essentially of substantially spherical metallic particles having a mean particle size of from 50 to 500 microns. - View Dependent Claims (27, 28)
-
Specification