Quadruped stifle stabilization system

• US 9,622,802 B2
• Filed: 05/17/2016
• 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 RAAFAT
• Application Number:
  US15/156,839
• Publication Number:
  US 20160256205A1
• Time in Patent Office: 336 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: A61D 1/00 Surgical instruments for veterinary use
• CPC Class Codes: A61F 2/3854 with ball and socket joint
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/3886 for stabilising knees against anterior or lateral dislocations
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence

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 having a channel corresponding in size and shape to at least part of the coupling member, an enlarged opening in a bottom surface of the insert component in communication with the channel, and a slot through the bottom surface of the insert component in communication with the enlarged opening and the channel, the channel receiving the at least part of the coupling member through the enlarged opening, 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.

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 having a channel corresponding in size and shape to at least part of the coupling member, an enlarged opening in a bottom surface of the insert component in communication with the channel, and a slot through the bottom surface of the insert component in communication with the enlarged opening and the channel, the channel receiving the at least part of the coupling member through the enlarged opening; 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.

2. The system of claim 1, wherein the system, when surgically implanted, stabilizes an unstable quadruped stifle joint during 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 leg portion comprises a first leg portion and a second leg portion, the first and second leg portions form dihedral angles with respect to one another, and wherein the first leg portion is twisted along an axis thereof.

11. The system of claim 10, wherein the coupling member is pressure fit into the aperture.

12. 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.

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

14. The system of claim 13, wherein the stem extends through the slot and the ball is retained within the channel.

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

16. The system of claim 15, 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.

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

18. 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.

19. 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.

20. A stifle stabilization system, comprising:

a femoral component having one or more attachment holes and a coupling member extending therefrom;

an articular sliding insert component defining a channel corresponding in size and shape to at least part of the coupling member, the sliding component having on its bottom surface a bottom opening along the channel of the articular sliding component and including an enlarged opening through the bottom surface at an end of the bottom opening along the channel, the enlarged opening sized to receive at least a portion of the coupling member therethrough; 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.

21. The system of claim 20, wherein the femoral component conforms to contours of a femur.

22. The system of claim 20, wherein the tibial component conforms to contours of a tibia.

23. The system of claim 20, wherein the leg portion comprises a first leg portion and a second leg portion, the first and second portion form dihedral angles with respect to one another, and wherein the first leg portion is twisted along an axis thereof.