Quadruped stifle stabilization system

• US 9,622,867 B2
• Filed: 03/10/2014
• Issued: 04/18/2017
• Est. Priority Date: 03/11/2013
• Status: Active Grant

• Current Assignee: Embark Enterprises Inc
• Original Assignee: Embark Enterprises Inc
• Inventors: Embleton, Neil, Barkowski, Veronica
• Primary Examiner(s): Boles, Sameh
• Application Number:
  US14/203,266
• Publication Number:
  US 20140257292A1
• Time in Patent Office: 1,135 Days
• Field of Search: None
• CPC Class Codes: A61B 17/56 Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
• CPC Class Codes: A61B 17/8023 Variable length plates adjustable in both directions
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 2017/567 Joint mechanisms or joint supports in addition to the natural joints and outside the joint gaps
• CPC Class Codes: A61F 2/3854 with ball and socket joint
• CPC Class Codes: A61F 2002/307 Prostheses for animals

Abstract

A stifle stabilization system is provided herein. The system comprising a femoral component having a leg portion and bottom portion, the bottom portion including an interconnected coupling member protruding therefrom, an articular sliding insert component defining a channel corresponding in size and shape to at least part of the coupling member, and a tibial component having a first proximal planar portion defining a slot, the slot being of corresponding and complementary shape to the articular sliding insert component to receive the articular sliding insert component therein, wherein, when the channel receives the at least part of the coupling member and the articular sliding insert component is received in the slot of the tibial component, the tibial component is interlocked with the femoral component with translational and rotational movement therebetween.

Claims

1. A stifle stabilization system, comprising:

a femoral component having a leg portion and bottom portion, the bottom portion including an interconnected coupling member protruding therefrom;

an articular sliding insert component defining a channel corresponding in size and shape to at least part of the coupling member; and

a tibial component having a first proximal planar portion defining a slot, the slot being of corresponding and complementary shape to the articular sliding insert component to receive the articular sliding insert component therein, wherein, when the channel receives the at least part of the coupling member and the articular sliding insert component is received in the slot of the tibial component, the tibial component is interlocked with the femoral component with translational and rotational movement therebetween, wherein the bottom portion of the femoral component includes an aperture and the coupling member is pressure fit into the aperture.

2. The system of claim 1, wherein the system, when surgically implanted, stabilizes an unstable quadruped stifle joint during all phases of a stride and allows for normal stifle flexion, extension, internal rotation, external rotation, joint compression, and varus and valgus movement.

3. The system of claim 1, wherein the leg portion of the femoral component includes attachment holes for attachment to a femur.

4. The system of claim 1, wherein the femoral component conforms and is permanently attached to a contour of a medial third of a distal femur.

5. The system of claim 1, wherein the femoral component conforms and is temporarily attached to a contour of a medial third of a distal femur.

6. The system of claim 1, wherein the leg portion and bottom portion form a plane angle with respect to one another.

7. The system of claim 1, wherein the leg portion and bottom portion form a dihedral angle with respect to one another.

8. The system of claim 1, wherein the leg portion and bottom portion form plane angles with respect to an intermediate portion therebetween.

9. The system of claim 1, wherein the leg portion and bottom portion form dihedral angles with respect to an intermediate portion therebetween.

10. The system of claim 1, wherein the slot further defines a recess corresponding in size and shape to the at least part of the coupling member of the femoral component.

11. The system of claim 1, wherein the coupling member comprises a ball and stem.

12. The system of claim 1, wherein the tibial component conforms and is attached to contours of a proximal medial tibia.

13. The system of claim 1, wherein the tibial component has a first proximal planar portion and a third distal planar portion that form dihedral angles with respect to a second central planar portion therebetween.

14. The system of claim 13, wherein the first proximal planar portion is angled with respect to the second proximal planar portion, and the second and third proximal planar portions are aligned.

15. The system of claim 13, wherein the third distal planar portion of the tibial component contains attachment holes for attachment to a tibia.

16. The system of claim 1, wherein the articular sliding insert component further comprises a lower angled flange extensions protruding outwardly from the lower portion of sidewalls, and an upper shoulder extensions, wherein when the tibial component is inserted into the slot of the tibial component, the tibial component is secured between the flange extensions and shoulder extensions of the articular sliding insert component.

17. A stifle stabilization system, comprising:

a femoral component having one or more attachment holes and an interconnected coupling member protruding therefrom;

an articular sliding insert component defining a channel corresponding in size and shape to at least part of the coupling member; and

a tibial component having one or more attachment holes and defining a slot, the slot being of corresponding and complementary shape to the articular sliding insert component to receive the articular sliding insert component therein, wherein the femoral component includes an aperture and the coupling member is pressure fit into the aperture.

18. The system of claim 17, wherein the femoral component conforms to contours of a femur.

19. The system of claim 17, wherein the tibial component conforms to contours of a tibia.

20. The system of claim 17, wherein the slot further defines a recess corresponding in size and shape to the at least part of the coupling member of the femoral component.

21. The system of claim 17, wherein the coupling member comprises a ball and stem.