Prosthetic implant support structure

Patent metadata

Field	Value
Publication number	US-10098743-B2
Application number	US-201213619091-A
Country	US
Kind code	B2
Filing date	Sep 14, 2012
Priority date	Aug 27, 2001
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A prosthetic system that includes a prosthetic implant and a support structure secured to an inner surface of a cavity of a bone is disclosed. The support structure defines a channel that extends through the length of the support structure. The prosthetic implant is received in the channel, and a portion of the prosthetic implant is secured to an inner surface of the support structure by an adhesive. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining the channel between the pair of components.

First claim

What is claimed is:

1. A method for supporting an acetabular cup implant and restoring lost bone stock in an acetabular cavity in a patient, the method comprising:
implanting a partially-hemispherical support component and an acetabular cup implant in an acetabular cavity in a patient, wherein the partially-hemispherical support component provides support to the acetabular cup implant in the acetabular cavity with an adhesive located between an outer surface of the acetabular cup implant and an inner surface of the partially-hemispherical support component to secure the partially-hemispherical support component to the acetabular cup implant, said partially-hemispherical 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 partially-hemispherical support component for restoring lost bone stock in the acetabular cavity, said partially-hemispherical support component including a convex outer surface facing an inner surface of the acetabular cavity and providing a surface through which bone of the patient can grow into said partially-hemispherical support component, wherein the partially-hemispherical support component is formed separately from said acetabular cup implant for subsequent connection to said acetabular cup implant, and wherein the partially-hemispherical support component is capable of being positioned, by itself, in the acetabular cavity prior to being secured to said acetabular cup implant and is capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of the partially-hemispherical support component in the acetabular cavity.

2. The method of claim 1 , wherein said partially-hemispherical support component has an established size and shape after formation and prior to being secured to said acetabular cup implant, said established size and shape including the convex outer surface of the partially-hemispherical support component.

3. The method of claim 1 , wherein said partially-hemispherical support component has an established size and shape after formation and prior to being secured to said acetabular cup implant, the established size and shape of the partially-hemispherical support component including an external geometry that is implantable in the acetabular cavity, and wherein said implanting includes impacting the partially-hemispherical support component into the acetabular cavity and obtaining a press fit of said external geometry in the acetabular cavity despite the partially-hemispherical support component consisting essentially of said porous metal material.

4. The method of claim 2 , wherein the partially-hemispherical support component has a shape approximating a quarter of a sphere.

5. The method of claim 1 , wherein the partially-hemispherical support component includes a screw hole for securing the partially-hemispherical support component to the inner surface of the acetabular cavity.

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

7. The method of claim 1 , wherein the inner surface of the partially-hemispherical support component includes a corrugated surface finish.

8. The method of claim 1 , wherein the partially-hemispherical support component is formed with a metal alloy.

9. The method of claim 8 , wherein the partially-hemispherical support component is formed with a titanium alloy.

10. A method for supporting an acetabular cup implant and restoring lost bone stock in an acetabular cavity in a patient, the method comprising:
implanting a support component and an acetabular cup implant in an acetabular cavity in a patient, wherein the support component provides support to the acetabular cup implant in the acetabular cavity, the 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, said support component including a convex outer surface facing an inner surface of the acetabular cavity and providing a surface through which bone of the patient can grow into said support component and including an inner surface accommodating an outer surface of the acetabular cup implant, wherein the support component is formed separately from said acetabular cup implant for subsequent connection to said acetabular cup implant, and wherein the support component is capable of being positioned, by itself, in the acetabular cavity prior to being secured to said acetabular cup implant and is capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of the support component in the acetabular cavity,
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, said established size and shape of the support component including an external geometry that is implantable in the acetabular cavity, and wherein said implanting includes impacting the support component into the acetabular cavity and obtaining a press fit of said external geometry in the acetabular cavity despite the support component consisting essentially of said porous metal material.

11. A method for supporting an acetabular cup implant and restoring lost bone stock in an acetabular cavity in a patient, the method comprising:
implanting a support component and an acetabular cup implant in an acetabular cavity in a patient, wherein the support component provides support to the acetabular cup implant in the acetabular cavity, the 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, said support component including a convex outer surface facing an inner surface of the acetabular cavity and providing a surface through which bone of the patient can grow into said support component and including an inner surface accommodating an outer surface of the acetabular cup implant, wherein the support component is formed separately from said acetabular cup implant for subsequent connection to said acetabular cup implant, and wherein the support component is capable of being positioned, by itself, in the acetabular cavity prior to being secured to said acetabular cup implant and is capable of being impacted, by itself, into the acetabular cavity for obtaining a press fit of the support component in the acetabular cavity,
wherein said inner surface of the support component accommodates only a portion of the outer surface of the acetabular cup implant.

12. The method of claim 11 , wherein an adhesive is located between the inner surface of the support component and the outer surface of the acetabular cup implant.

13. A method for supporting an acetabular cup implant and restoring lost bone stock in an acetabular cavity in a patient, the method comprising:
implanting a support component and an acetabular cup implant in an acetabular cavity in a patient, wherein the support component provides support to the acetabular cup implant in the acetabular cavity, the support component consisting essentially of a porous metal material

Assignees

• Hanssen Arlen D
• Lewallen David
• Zimmer Inc

Inventors

• Hanssen Arlen D
• Lewallen David

Classifications

• A61F2002/30245

  Partial spheres · CPC title

• A61F2002/30593

  hollow · CPC title

• A61F2002/30273

  pyramidal · CPC title

• A61F2220/005

  using adhesives · CPC title

• A61F2002/30738

  Sleeves · CPC title