Ceramic monoblock implants with osseointegration fixation surfaces

Patent metadata

Field	Value
Publication number	US-9248020-B2
Application number	US-201113885918-A
Country	US
Kind code	B2
Filing date	Nov 16, 2011
Priority date	Nov 17, 2010
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

Monoblock orthopedic and/or dental implants are disclosed. The monoblock implants include a ceramic articulating surface and an osseointegrative bone-contacting surface. Methods of making such implants also disclosed.

First claim

That which is claimed:

1. A monoblock orthopedic implant, comprising:
a ceramic substrate comprising an inner bearing surface and a treated outer surface;
a metallic scaffold adapted for osseointegration; and
a multi-layer construct positioned between the ceramic substrate and the metallic scaffold, the multi-layer construct comprising:
an inner layer formed of a first material, the inner layer positioned on the treated outer surface, wherein the first material is a metallic material;
an intermediate layer formed of a second material; and
an outer layer formed of a third material, wherein the second material is different from the first material and the third material.

2. The monoblock orthopedic implant of claim 1 , wherein the metallic scaffold comprises a metal foam.

3. The monoblock orthopedic implant of claim 2 , wherein the metal foam is selected from the group consisting essentially of a titanium foam, a tantalum foam, and a stainless steel foam.

4. The monoblock orthopedic implant of claim 1 , wherein the ceramic substrate is selected from the group consisting essentially of aluminum oxide and zirconia oxide.

5. The monoblock orthopedic implant of claim 1 , wherein one or more of the intermediate layer and the outer layer of the multi-layer construct are of a metallic material.

6. The monoblock orthopedic implant of claim 1 , wherein the multi-layer construct comprises a surface adapted for bonding to the ceramic substrate and a surface adapted for bonding to the metallic scaffold.

7. The monoblock orthopedic implant of claim 1 , wherein the inner layer includes the surface adapted for bonding to the ceramic substrate and the outer layer includes the surface adapted for bonding to the metallic scaffold.

8. The monoblock orthopedic implant of claim 1 , wherein the intermediate layer is adapted to accommodate temperature expansion differences between the ceramic substrate and the other layers.

9. The monoblock orthopedic implant of claim 1 , wherein the inner layer comprises titanium, the intermediate layer comprises molybdenum, and the outer layer comprises titanium.

10. The monoblock orthopedic implant of claim 1 , wherein the first material and the third material are the same.

Assignees

• Popoola Oludele O
• Miller David M
• Anderson Jeffrey P
• Thomas Brian H
• Zimmer Inc

Inventors

• Popoola Oludele O
• Miller David M
• Anderson Jeffrey P
• Thomas Brian H

Classifications

• A61L27/06 Primary

  Titanium or titanium alloys · CPC title

• A61F2/28 Primary

  Bones · CPC title

• A61L27/10

  Ceramics or glasses · CPC title

• A61L27/306

  Other specific inorganic materials not covered by A61L27/303 - A61L27/32 · CPC title