Prosthetic implant support structure

Inventors: Arlen D. Hanssen (Rochester, MN); David Lewallen (Rochester, MN)

Assignee: Zimmer, Inc.

A61F2/30 A61F2/30734 A61F2/34 A61F2/36 A61B17/86 A61F2/30767 A61F2/30771 A61F2/30965 A61F2/3662 A61F2/389 A61F2002/2835 A61F2002/30131 A61F2002/30228 A61F2002/30233 A61F2002/30235 A61F2002/30245 A61F2002/30273 A61F2002/30276 A61F2002/30299 A61F2002/30324 A61F2002/30354 A61F2002/30449 A61F2002/30593 A61F2002/30606 A61F2002/30616 A61F2002/30736 A61F2002/30738 A61F2002/30777 A61F2002/30784 A61F2002/30841 A61F2002/30878 A61F2002/3403 A61F2002/3611 A61F2002/3625 A61F2002/3631 A61F2002/4631 A61F2002/4681 A61F2220/005 A61F2220/0033 A61F2230/0013 A61F2230/0069 A61F2230/0071 A61F2230/0086 A61F2230/0093 A61F2250/0036 A61F2310/00017 A61F2310/00023 A61F2310/00029 A61F2310/00131 A61F2310/00203 A61F2310/00239

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Quick Facts

Patent No.: US 10,806,587
App. No.: 15/978,686
Granted: Oct 20, 2020
Kind: B2

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Abstract

A prosthetic system that includes a prosthetic implant acrd a support structure secured to an inner surface of a cavity of a bone is disclosed. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining a channel between the pair of components.

Claims (28)

1. An acetabular system implantable in an acetabular cavity in a patient, the acetabular system comprising:

an acetabular cup implant including an outer surface; and

a support component for occupying an area in the acetabular cavity, the support component formed separately from said acetabular cup implant for subsequent connection to said acetabular cup implant, said support component capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of the support component in the acetabular cavity prior to the support component being connected to the acetabular cup implant, said support component consisting essentially of a porous metal material that is a bone ingrowth-receptive material with a porous structure for encouraging bone ingrowth and attachment throughout the support component for restoring lost bone stock in the acetabular cavity in the area occupied by the support component when the support component is implanted in the acetabular cavity, said support component including a convex outer surface for facing an inner surface of the acetabular cavity and through which bone of the patient can grow into said support component when the support component is implanted in the acetabular cavity and including an inner surface for accommodating the outer surface of the acetabular cup implant.

2. The acetabular system of claim 1 , wherein the support component being formed separately from the acetabular cup implant for subsequent connection to the acetabular cup implant includes the support component being formed to have a shape approximating a quarter of a sphere.

3. The acetabular system of claim 1 , wherein the support component being formed separately from the acetabular cup implant for subsequent connection to the acetabular cup implant includes the support component being formed to have a partially-hemispherical shape.

4. The acetabular system of claim 1 , wherein the support component being formed separately from the acetabular cup implant for subsequent connection to the acetabular cup implant includes the support component being formed to have an established size and shape for implantation in the acetabular cavity, the established size and shape of the support component including an external geometry of the support component, and wherein the support component, despite consisting essentially of said porous metal material, is capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of said external geometry in the acetabular cavity.

5. The acetabular system of claim 1 , wherein the support component being formed separately from the acetabular cup implant for subsequent connection to the acetabular cup implant includes the support component being formed to have an external geometry that includes said convex outer surface, and wherein the support component, despite consisting essentially of the porous metal material, is capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of said convex outer surface in the acetabular cavity.

6. The acetabular system of claim 1 , wherein the support component is connected to the acetabular cup implant, the support component having an established size and shape after formation and prior to being connected to the acetabular cup implant, the established size and shape of the support component including the convex outer surface of the support component.

7. The acetabular system of claim 1 , further comprising an adhesive located between the inner surface of the support component and the outer surface of the acetabular cup implant for securing the support component to the acetabular cup implant.

8. The acetabular system of claim 1 , wherein the support component includes a fenestration that can be filled with a bone graft material and which extends fully through the support component from said convex outer surface to said inner surface.

9. The acetabular system of claim 1 , wherein the support component is formed with a metal alloy.

10. The acetabular system of claim 1 , wherein said support component s formed entirely with said porous metal material.

11. An acetabular system implantable in an acetabular cavity in a patient, the acetabular system comprising:

an acetabular cup implant including a convex outer surface; and

a porous support component for occupying an area in the acetabular cavity, the porous support component formed separately from said acetabular cup implant for subsequent connection to said acetabular cup implant, said porous support component capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of the porous support component in the acetabular cavity prior to the porous support component being connected to the acetabular cup implant, said porous support component consisting essentially of a porous metal material that is a bone ingrowth-receptive material with a porous structure for encouraging bone ingrowth and attachment throughout the porous support component for restoring lost bone stock in the acetabular cavity in the area occupied by the porous support component when the porous support component is implanted in the acetabular cavity, said porous support component including a convex outer surface for facing an inner surface of the acetabular cavity and through which bone of the patient can grow into said porous support component when the porous support component is implanted in the acetabular cavity and including a concave inner surface for accommodating the convex outer surface of the acetabular cup implant.

12. The acetabular system of claim 11 , wherein the porous support component being formed separately from the acetabular cup implant for subsequent connection to the acetabular cup implant includes the porous support component being formed to have an established size and shape for implantation in the acetabular cavity.

13. The acetabular system of claim 12 , wherein the established size and shape of the porous support component includes an external geometry of the porous support component that is implantable in the acetabular cavity, and wherein the porous support component, despite consisting essentially of said porous metal material, is capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of said external geometry in the acetabular cavity.

14. The acetabular system of claim 11 , wherein the porous support component is connected to the acetabular cup implant, the porous support component having an established size and shape after formation and prior to being connected to the acetabular cup implant, the established size and shape of the porous support component including the convex outer surface and the concave inner surface of the porous support component.

15. The acetabular system of claim 14 , wherein the porous support component is formed having a shape approximating a quarter of a sphere.

16. The acetabular system of claim 14 , wherein the porous support component is formed having a partially-hemispherical shape.

17. The acetabular system of claim 11 , wherein the porous support component being formed separately from the acetabular cup implant for subsequent connection to the acetabular cup implant includes the porous support component being formed to have an external geometry that includes said convex outer surface and said concave inner surface of the porous support component, and wherein the porous support component, despite consisting essentially of the porous metal material, is capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of said convex outer surface in the acetabular cavity.

18. The acetabular system of claim 11 , wherein the porous support component includes a fenestration that can be filled with a bone graft material and which extends fully through the porous support component from said convex outer surface to said concave inner surface.

19. The acetabular system of claim 11 , wherein the porous support component is formed with a metal alloy.

20. The acetabular system of claim 11 , wherein said porous support component is formed entirely with said porous metal material.

21. The acetabular system of claim 11 , wherein said concave inner surface of the support component accommodates only a portion of the convex outer surface of the acetabular cup implant.

22. An acetabular system implantable in an acetabular cavity in a patient, the acetabular system comprising:

an acetabular cup implant including an outer surface; and

a support component for occupying an area in the acetabular cavity; the support component formed separately from said acetabular cup implant for subsequent connection to said acetabular cup implant, wherein the support component being formed separately from the acetabular cup implant for subsequent connection to the acetabular cup implant includes the support component being formed to have a partially-hemispherical shape, said support component capable of being impacted, by itself, into the acetabular cavity for thereby obtaining a press fit of the support component, by itself, in the acetabular cavity, said support component consisting essentially of a porous metal material that is a bone ingrowth-receptive material with a porous structure for encouraging bone ingrowth and attachment throughout the support component for restoring lost bone stock in the acetabular cavity in the area occupied by the support component when the support component is implanted in the acetabular cavity, said support component including a convex outer surface for facing an inner surface of the acetabular cavity and through which bone of the patient can grow into said support component when the support component is implanted in the acetabular cavity and including an inner surface for accommodating the outer surface of the acetabular cup implant.