Artificial joint components including synovial fluid deflecting structures

• US 9,387,080 B2
• Filed: 05/20/2014
• Issued: 07/12/2016
• Est. Priority Date: 09/27/2012
• Status: Expired due to Fees

• 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
• Application Number:
  US14/282,811
• Publication Number:
  US 20140277519A1
• Time in Patent Office: 784 Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/30 Joints
• 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 2002/30673 Lubricating means, e.g. synovial pocket

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 substantially rigid 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 substantially flexible fluid deflection structure including a first end attached to the non-load bearing surface and a second end distal to the non-load bearing surface, the second end structured as free of connection to other portions of the artificial joint prosthesis and to the bone-prosthesis interface, 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 substantially rigid non-contact surface of the artificial joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the artificial joint prosthesis; and

a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end structured as free of connection to other portions of the artificial joint prosthesis and to the bone-prosthesis interface, the fluid deflection structures 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 plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

at least one flange structure positioned to extend from the non-contact surface.

5. The artificial joint prosthesis of claim 2, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a plurality of linear projections.

6. The artificial joint prosthesis of claim 2, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially straight fluid deflection structure.

7. The artificial joint prosthesis of claim 2, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially curved fluid deflection structure.

8. The artificial joint prosthesis of claim 2, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to 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 substantially flexible fluid deflection structure including a first end attached to a non-contact surface.

10. 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 substantially rigid non-contact surface of the hip joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the hip joint prosthesis; and

a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end structured as free of connection to other portions of the hip joint prosthesis and to the bone-prosthesis interface, the fluid deflection structures positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

11. The hip joint prosthesis of claim 10, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

at least one flange structure positioned to extend from the non-contact surface.

12. The hip joint prosthesis of claim 10, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a plurality of linear projections.

13. The hip joint prosthesis of claim 10, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially straight fluid deflection structure.

14. The hip joint prosthesis of claim 10, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially curved fluid deflection structure.

15. The hip joint prosthesis of claim 10, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface is configured to be flexible at physiological conditions when the artificial joint is utilized in vivo.

16. The hip joint prosthesis of claim 10, comprising:

at least one acetabular component, wherein the acetabular component includes at least one fluid deflection structure including a first end attached to the non-contact surface; and

at least one femoral component, wherein the femoral component includes at least one fluid deflection structure including a first end attached to the non-contact surface.

17. 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 substantially rigid non-contact surface of the knee joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the knee joint prosthesis; and

a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end configured to face away from the bone-prosthesis interface, the fluid deflection structures positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

18. The knee joint prosthesis of claim 17, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

at least one flange structure positioned to extend from the non-contact surface.

19. The knee joint prosthesis of claim 17, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a plurality of linear projections.

20. The knee joint prosthesis of claim 17, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially straight fluid deflection structure.

21. The knee joint prosthesis of claim 17, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially curved fluid deflection structure.

22. The knee joint prosthesis of claim 17, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface is configured to be flexible at physiological conditions when the artificial joint is utilized in vivo.

23. The knee joint prosthesis of claim 17, comprising:

at least one femoral component, wherein the femoral component includes at least one fluid deflection structure including a first end attached to the non-contact surface; and

at least one tibial component, wherein the tibial component includes at least one fluid deflection structure including a first end attached to the non-contact surface.

24. 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 substantially rigid non-contact surface of the shoulder joint prosthesis, the non-contact surface adjacent to the bone-facing surface of the shoulder joint prosthesis; and

a plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface and a second end distal to the non-contact surface, the second end structured as free of connection to other portions of the shoulder prosthesis and to the bone-prosthesis interface, the fluid deflection structures positioned to deflect synovial fluid away from the bone-prosthesis interface in vivo.

25. The shoulder joint prosthesis of claim 24, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

at least one flange structure positioned to extend from the non-contact surface.

26. The shoulder joint prosthesis of claim 24, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a plurality of linear projections.

27. The shoulder joint prosthesis of claim 24, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially straight fluid deflection structure.

28. The shoulder joint prosthesis of claim 24, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface comprises:

a substantially curved fluid deflection structure.

29. The shoulder joint prosthesis of claim 24, wherein the plurality of substantially flexible fluid deflection structures including a first end attached to the non-contact surface is configured to be flexible at physiological conditions when the artificial joint is utilized in vivo.

30. The shoulder joint prosthesis of claim 24, comprising:

at least one glenoid component to a scapula, wherein the glenoid component includes at least one fluid deflection structure including a first end attached to the non-contact surface; and

at least one humeral component, wherein the humeral component includes at least one fluid deflection structure including a first end attached to the non-contact surface.