Artificial joint components including synovial fluid deflecting structures

• US 8,828,081 B2
• Filed: 09/27/2012
• Issued: 09/09/2014
• Est. Priority Date: 09/27/2012
• Status: Active Grant

• Current Assignee: Elwha LLC (Intellectual Ventures LLC)
• Original Assignee: Elwha LLC (Intellectual Ventures LLC)
• Inventors: Boyden, Edward S., Della Rocca, Gregory J., Hawkins, Daniel, Hyde, Roderick A., Langer, Robert, Leuthardt, Eric C., Myckatyn, Terence, Parikh, Parag Jitendra, Rivet, Dennis J., Shimony, Joshua S., Smith, Michael A., Tegreene, Clarence T.
• Primary Examiner(s): STEWART, JASON-DENNIS NEILKEN
• Application Number:
  US13/628,442
• Publication Number:
  US 20140088717A1
• Time in Patent Office: 712 Days
• Field of Search: 623/16.11, 623/18.11, 623 1911- 1914, 623 2014- 2021, 623 2211- 2235
• US Class Current: 623/16.11
• CPC Class Codes: A61F 2/30 Joints
• CPC Class Codes: A61F 2/30742 Bellows or hose-like seals; Sealing membranes A61B17/8808 takes precedence; sealing membranes for retaining bone substitute A61F2/2846
• CPC Class Codes: A61F 2/32 for the hip
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/40 for shoulders
• CPC Class Codes: A61F 2/482 Electrical means
• CPC Class Codes: A61F 2002/30079 magnetic
• CPC Class Codes: A61F 2002/30087 piezoelectric
• CPC Class Codes: A61F 2002/30558 Force-limiting means
• CPC Class Codes: A61F 2002/30673 Lubricating means, e.g. synovial pocket
• CPC Class Codes: A61F 2002/30682 Means for preventing migration of particles released by the joint, e.g. wear debris or cement particles
• CPC Class Codes: A61F 2002/30683 Means for collecting wear particles in a hollow cavity inside the prosthesis
• CPC Class Codes: A61F 2002/3082 Grooves
• CPC Class Codes: A61F 2002/3092 having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/3429 with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
• CPC Class Codes: A61F 2002/3631 with an integral complete or partial peripheral collar or bearing shoulder at its base

Abstract

Artificial joint prosthetic components including synovial fluid deflection structures are described. Embodiments of artificial joint prosthesis include those with: a bone-facing surface of a artificial joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo; a non-contact surface of the artificial joint prosthesis; and at least one fluid deflection structure positioned on the non-contact surface, the fluid deflection structure positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

Claims

1. An artificial joint prosthesis, comprising:

a bone-facing surface of an artificial joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo;

a non-load bearing surface of the artificial joint prosthesis, the non-load bearing surface adjacent to the bone-facing surface of the artificial joint prosthesis; and

at least one fluid deflection structure positioned on the non-load bearing surface, the at least one fluid deflection structure including at least one flange structure positioned to extend from the non-load bearing surface, the at least one flange structure including a first end connected to the non-load bearing surface and a second end distal to the non-load bearing surface, wherein the at least one flange structure is widest at the first end and narrowest at the second end, the fluid deflection structure positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo during physiological movement of the artificial joint prosthesis.

2. An artificial joint prosthesis, comprising:

a bone-facing surface of an artificial joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo;

a non-contact surface of the artificial joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the artificial joint prosthesis; and

at least one fluid deflection structure positioned on the non-contact surface, the at least one fluid deflection structure including at least one flange structure positioned to extend from the non-contact surface, the at least one flange structure including a first end connected to the non-contact surface and a second end distal to the non-contact surface, wherein the at least one flange structure is widest at the first end and narrowest at the second end, the fluid deflection structure positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

3. The artificial joint prosthesis of claim 2, wherein the artificial joint prosthesis comprises at least one of:

a hip joint prosthesis, a knee joint prosthesis, a shoulder joint prosthesis, an ankle joint prosthesis, or an elbow joint prosthesis.

4. The artificial joint prosthesis of claim 2, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a plurality of fluid deflection structures.

5. The artificial joint prosthesis of claim 2, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially straight fluid deflection structure.

6. The artificial joint prosthesis of claim 2, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially curved fluid deflection structure.

7. The artificial joint prosthesis of claim 2, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be substantially rigid at physiological conditions when the artificial joint is utilized in vivo.

8. The artificial joint prosthesis of claim 2, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be flexible at physiological conditions when the artificial joint is utilized in vivo.

9. The artificial joint prosthesis of claim 2, comprising:

at least two components, each of which include at least one fluid deflection structure positioned on a non-contact surface.

10. The artificial joint prosthesis of claim 2, wherein the at least one flange structure is positioned to extend from the non-contact surface at an angle substantially between 10 degrees and 80 degrees.

11. The artificial joint prosthesis of claim 2, wherein the at least one flange structure is positioned to extend from the non-contact surface at a substantially right angle.

12. The artificial joint prosthesis of claim 2, wherein the at least one flange structure tapers from a widest point at the first end to a narrow point at the second end.

13. The artificial joint prosthesis of claim 2, wherein the at least one flange structure comprises:

at least one flange structure with a curvilinear structure.

14. A hip joint prosthesis, comprising:

a bone-facing surface of a hip joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo;

a non-contact surface of the hip joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the hip joint prosthesis; and

at least one fluid deflection structure positioned on the non-contact surface, the at least one fluid deflection structure including at least one flange structure positioned to extend from the non-contact surface, the at least one flange structure including a first end connected to the non-contact surface and a second end distal to the non-contact surface, wherein the at least one flange structure is widest at the first end and narrowest at the second end, the fluid deflection structure positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

15. The hip joint prosthesis of claim 14, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a plurality of fluid deflection structures.

16. The hip joint prosthesis of claim 14, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a plurality of linear projections.

17. The hip joint prosthesis of claim 14, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially straight fluid deflection structure.

18. The hip joint prosthesis of claim 14, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially curved fluid deflection structure.

19. The hip joint prosthesis of claim 14, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be substantially rigid at physiological conditions when the artificial joint is utilized in vivo.

20. The hip joint prosthesis of claim 14, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be flexible at physiological conditions when the artificial joint is utilized in vivo.

21. The hip joint prosthesis of claim 14, comprising:

at least one acetabular component, wherein the acetabular component includes at least one fluid deflection structure positioned on the non-contact surface; and

at least one femoral component, wherein the femoral component includes at least one additional fluid deflection structure positioned on the non-contact surface.

22. A knee joint prosthesis, comprising:

a bone-facing surface of a knee joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo;

a non-contact surface of the knee joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the knee joint prosthesis; and

at least one fluid deflection structure positioned on the non-contact surface, the at least one fluid deflection structure including at least one flange structure positioned to extend from the non-contact surface, the at least one flange structure including a first end connected to the non-contact surface and a second end distal to the non-contact surface, wherein the at least one flange structure is widest at the first end and narrowest at the second end, the fluid deflection structure positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

23. The knee joint prosthesis of claim 22, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a plurality of fluid deflection structures.

24. The knee joint prosthesis of claim 22, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a plurality of linear projections.

25. The knee joint prosthesis of claim 22, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially straight fluid deflection structure.

26. The knee joint prosthesis of claim 22, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially curved fluid deflection structure.

27. The knee joint prosthesis of claim 22, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be substantially rigid at physiological conditions when the artificial joint is utilized in vivo.

28. The knee joint prosthesis of claim 22, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be flexible at physiological conditions when the artificial joint is utilized in vivo.

29. The knee joint prosthesis of claim 22, comprising:

at least one femoral component, wherein the femoral component includes at least one fluid deflection structure positioned on the non-contact surface; and

at least one tibial component, wherein the tibial component includes at least one additional fluid deflection structure positioned on the non-contact surface.

30. A shoulder joint prosthesis, comprising:

a bone-facing surface of a shoulder joint prosthesis, the bone-facing surface configured to face a bone-prosthesis interface in vivo;

a non-contact surface of the shoulder joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the shoulder joint prosthesis; and

at least one fluid deflection structure positioned on the non-contact surface, the at least one fluid deflection structure including at least one flange structure positioned to extend from the non-contact surface, the at least one flange structure including a first end connected to the non-contact surface and a second end distal to the non-contact surface, wherein the at least one flange structure is widest at the first end and narrowest at the second end, the fluid deflection structure positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

31. The shoulder joint prosthesis of claim 30, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a plurality of fluid deflection structures.

32. The shoulder joint prosthesis of claim 30, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a plurality of linear projections.

33. The shoulder joint prosthesis of claim 30, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially straight fluid deflection structure.

34. The shoulder joint prosthesis of claim 30, wherein the at least one fluid deflection structure positioned on the non-contact surface comprises:

a substantially curved fluid deflection structure.

35. The shoulder joint prosthesis of claim 30, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be substantially rigid at physiological conditions when the artificial joint is utilized in vivo.

36. The shoulder joint prosthesis of claim 30, wherein the at least one fluid deflection structure positioned on the non-contact surface is configured to be flexible at physiological conditions when the artificial joint is utilized in vivo.