Orthopedic implant augments

• US 10,383,744 B2
• Filed: 07/18/2017
• Issued: 08/20/2019
• Est. Priority Date: 12/07/2011
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Inventors: Shea, Jeffrey J., Quinn, Nathaniel M., Goldberg, Daniel R.
• Primary Examiner(s): Hammond, Ellen C
• Application Number:
  US15/653,055
• Publication Number:
  US 20170312098A1
• Time in Patent Office: 763 Days
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/8052 immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61F 2/30734 Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect
• CPC Class Codes: A61F 2/34 Acetabular cups
• CPC Class Codes: A61F 2/46 Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
• CPC Class Codes: A61F 2002/30131 horseshoe- or crescent- or C-shaped or U-shaped
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30736 Augments or augmentation pieces, e.g. wedges or blocks for bridging a bone defect

Abstract

Systems, methods and devices for providing orthopedic implant augments are provided which have fastener locking mechanisms. The augments include a surface for mating with an implant component and a surface for interfacing with a patient'"'"'s bone. The fastener locking mechanisms are aligned such that the augment may be locked in a variety of orientations while maintaining close contact with both an implant and a patient'"'"'s bone. The alignment of the locking mechanisms provides variability and adjustability to the augment to address a variety of bone anatomies and requirements.

Claims

1. An orthopedic device, comprising:

a first surface having a mating face configured to mate with an implant; and

a second surface adjacent to the first surface and intersecting the first surface at an edge, the second surface comprising an opening extending along a central axis and through the second surface to an opposite surface, wherein the opening is configured to receive a fastener, said opening including a plurality of fins disposed in a plane that is not parallel to the mating face, and wherein the mating face is shaped such that a distance that the mating face is offset from the central axis in a direction perpendicular to the central axis varies as the mating face extends downwardly away from the edge;

wherein at least a portion of the first surface is formed from a porous material.

2. The orthopedic device of claim 1, wherein the opening is configured as a through hole and the opening comprises a first end in the second surface and a second end in a surface opposite the second surface.

3. The orthopedic device of claim 2, wherein the opening is configured to receive a fastener inserted into the first end in the second surface when the device is in a first orientation and is configured to receive a fastener inserted into the second end opposite the second surface when the device is in a second orientation.

4. The orthopedic device of claim 3, wherein the fins are disposed between the first and second ends of the opening.

5. The orthopedic device of claim 3, wherein the fins are configured to lock a fastener in a first locked configuration when the device is in the first orientation and are configured to lock a fastener in a second locked configuration when the device is in the second orientation.

6. The orthopedic device of claim 3, wherein the mating face is configured to mate with an implant when the device is in each of the first and second orientations.

7. The orthopedic device of claim 1, further comprising a bone interface surface configured to mate with a patient'"'"'s bone or tissue.

8. The orthopedic device of claim 1, wherein the plane is arranged substantially perpendicular to the mating face.

9. The orthopedic device of claim 1, wherein the fins are configured to engage a fastener inserted along any one of a plurality of axes and lock the fastener in a plurality of locking configurations corresponding to the plurality of axes.

10. An augment device, comprising:

an inner surface with mating face, at least a portion of the inner surface comprising a porous material, the mating face having an arcuate shape across the mating face in at least two directions;

a bone interface surface opposite the mating face;

a top surface connected to the inner surface and the bone interface surface, wherein the inner surface, the bone interface surface, and the top surface form two legs having a generally horseshoe shape; and

at least one opening extending from the top surface, the at least one opening including a locking mechanism comprising a plurality of fins.

11. The augment device of claim 10, wherein the mating face is configured to match the shape of an exterior surface of an orthopaedic implant.

12. The augment device of claim 10, wherein the orientation of the at least one opening is relative to the mating face.

13. The augment device of claim 10, wherein the mating face is configured to mate with an implant when the device is in each of the first and second orientations.

14. The augment device of claim 10, wherein at least one of the bone interface surface and the top surface comprise a porous material portion.

15. The augment device of claim 10, wherein the plane is arranged substantially perpendicular to the mating face.

16. The augment device of claim 10, wherein the plurality of fins is configured to engage a fastener inserted along any one of a plurality of axes and lock the fastener in a plurality of locking configurations corresponding to the plurality of axes.

17. The augment device of claim 10, wherein the at least one opening is configured as a through hole and the opening comprises a first end in the top surface and a second end in a surface opposite the top surface.

18. The augment device of claim 17, wherein the opening is configured to receive a fastener inserted into the first end in the top surface when the device is in a first orientation and is configured to receive a fastener inserted into the second end opposite the top surface when the device is in a second orientation.

19. The augment device of claim 17, wherein the plurality of fins is disposed between the first and second ends of the opening.

20. The augment device of claim 17, wherein the plurality of fins is configured to lock a fastener in a first locked configuration when the device is in the first orientation and is configured to lock a fastener in a second locked configuration when the device is in the second orientation.

21. An augment device, comprising:

an inner surface with a mating face, at least a portion of the inner surface comprising a porous material;

a bone interface surface opposite the mating face;

a top surface connected to the inner surface and the bone interface surface, wherein the inner surface, the bone interface surface, and the top surface form two legs having a generally horseshoe shape; and

at least two openings extending from the top surface, the at least two openings each include a locking mechanism comprising a plurality of fins, the plurality of fins are disposed around an inner perimeter of each opening, and the plurality of fins with respect to each opening is disposed within a plane, and the plane of each opening has an orientation that is not parallel to the mating face, and wherein each of the at least two openings is positioned approximately adjacent to both the mating face and the bone interface surface.

22. The augment device of claim 21, wherein each of the at least two openings has an orientation relative to the mating face.