Implant components and methods

Patent metadata

Field	Value
Publication number	US-9901451-B2
Application number	US-201414189210-A
Country	US
Kind code	B2
Filing date	Feb 25, 2014
Priority date	Jun 8, 2010
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. Mounting members include, for example, flanges, blades, hooks, and plates. In some embodiments, the orthopedic attachments may be adjustably positionable about the base member or other attachments, thereby providing modularity for assembling and implanting the device, and various securing and/or locking mechanisms may be used between the components of the implant.

First claim

What is claimed is:

1. A method of implanting an orthopedic device into bone, the method comprising:
inserting an acetabular shell into a bone void in the bone;
securing, by a first fixation element, the inserted acetabular shell to the bone;
inserting an augment into the bone void and adjacent to the secured acetabular shell, at least a portion of the inserted augment inserted to a same depth into the bone void as at least opposing sides of the first fixation element such that the at least a portion of the augment extends around at least the opposing sides of the first fixation element; and
applying a second fixation element to the shell and augment, wherein applying the second fixation element (1) locks the shell and augment together to form a unitary implant and (2) secures the unitary implant to the bone.

2. The method of claim 1 , wherein the second fixation element comprises bone cement.

3. The method of claim 2 , wherein the augment comprises a trough for receiving the bone cement, and applying the second fixation element comprises pouring cement down the trough, thereby binding the augment to the shell and to the patient's bone.

4. The method of claim 3 , wherein the augment comprises an arcuate surface configured to contact an exterior surface of the shell, and wherein inserting the augment includes translating the augment along the exterior surface of the shell.

5. The method of claim 4 , wherein applying the second fixation element comprises pouring a single volume of bone cement down the trough.

6. The method of claim 5 , wherein pouring the single volume of bone cement comprises pouring the cement into a portal defined by the exterior surface of the shell and an end of the trough.

7. The method of claim 2 , further comprising inserting a bone screw through the augment and into the bone after the bone cement sets.

8. The method of claim 1 , wherein the augment is staple-shaped and includes a base portion and at least two protections extending from the base portion and spaced apart to define a gap therebetween.

9. A method of implanting an orthopedic device into bone, the method comprising:
inserting an acetabular shell into a void in the bone;
securing the acetabular shell to the bone by a fixation element;
inserting an augment into the void and adjacent to the secured acetabular shell to a position at which the fixation element extends through a gap of the augment, the augment includes at least one trough for receiving bone cement, the trough positioned adjacent the acetabular shell, and wherein the inserting the augment includes displacing a portion of the augment to a depth in the void that is the same as a depth of at least opposing sides of the fixation element such that the portion of the augment extends around at least the opposing sides of the fixation element; and
placing bone cement into the trough, thereby binding the augment to the acetabular shell to form a unitary implant within the void in the bone.

10. The method of claim 9 , wherein the placing of the bone cement into the trough secures the augment and the acetabular shell to surrounding bone.

11. The method of claim 9 , further comprising adjusting an orientation of the augment relative to the acetabular shell prior to the placing of the bone cement into the trough and binding the augment to the acetabular shell.

12. The method of claim 11 , wherein the augment comprises an arcuate concave surface positioned in contact with an arcuate convex surface of the acetabular shell; and
wherein the adjusting of the orientation of the augment relative to the acetabular shell comprises translating the arcuate concave surface of the augment along the arcuate convex surface of the acetabular shell.

13. The method of claim 9 , wherein the placing of the bone cement into the trough comprises pouring a single volume of the bone cement into the trough.

14. The method of claim 9 , wherein the at least one trough of the augment and an exterior surface of the acetabular shell define a portal for receiving the bone cement.

15. The method of claim 14 , wherein the placing of the bone cement comprises pouring the bone cement into the portal defined by the at least one trough of the augment and the exterior surface of the acetabular shell.

16. The method of claim 9 , further comprising inserting a bone screw through a bone screw opening in the augment and into the bone.

17. The method of claim 16 , wherein the inserting of the bone screw through the bone screw opening and into the surrounding bone occurs after setting of the bone cement.

18. The method of claim 9 , wherein the securing the acetabular shell to the bone includes inserting a fixation bone screw through an opening in the acetabular shell and into the bone.

19. The method of claim 18 , wherein the augment includes a base portion and at least two protections extending from the base portion, the projections spaced apart to define the gap therebetween.

20. The method of claim 9 , wherein the augment includes timing markings that are aligned with timing markings of the acetabular shell to properly align the augment relative to the acetabular shell.

21. The method of claim 9 , wherein the augment includes timing markings that are aligned with timing markings of the acetabular shell to properly align the gap with the fixation element.

22. The method of claim 9 , wherein the augment is staple-shaped and includes a base portion and at least two protections extending from the base portion and spaced apart to define the gap therebetween.

23. A method of implanting an orthopedic device into bone, the method comprising:
inserting an acetabular shell into a void in the bone;
inserting an augment into the void, the augment includes at least one trough for receiving bone cement, the trough positioned adjacent the acetabular shell; and
placing bone cement into the trough, thereby binding the augment to the acetabular shell to form a unitary implant within the void in the bone, wherein the augment is staple-shaped and includes a base portion and at least two protections extending from the base portion and spaced apart to define a gap therebetween.

24. The method of claim 23 , wherein the troughs are defined along a length of the projections and open onto an outer surface of the base portion.

25. The method of claim 23 , wherein the augment comprises an arcuate concave surface defined by the base portion and/or the projections, the arcuate concave surface positioned in contact with an arcuate convex surface of the acetabular shell.

Assignees

• Smith & Nephew Inc

Inventors

• Conway Justin Steve
• Kelman David C
• Lambert Richard D
• Sharp Jeffrey A
• Shea Jeffrey Joel
• Yokoo Brian Ronald

Classifications

• A61F2002/30331

  made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit · CPC title

• A61F2002/3487

  Partial acetabular cups, e.g. strips replacing only partially the natural acetabular cartilage · CPC title

• A61B17/82

  for bone cerclage {(apparatus for manipulating wires or straps A61B17/8861; wires, bands or straps other than cerclage A61B17/842)} · CPC title

• A61F2002/3441

  the outer shell having an outer surface and an inner insert receiving cavity being angularly inclined with respect to the longitudinal axis of the outer surface · CPC title

• A61B17/8066

  for pelvic reconstruction · CPC title