Soft tissue repair material fixation apparatus and method

• US 6,508,821 B1
• Filed: 01/28/2000
• Issued: 01/21/2003
• Est. Priority Date: 01/28/2000
• Status: Expired due to Term

• Current Assignee: DePuy Orthopaedics Incorporated (Johnson & Johnson)
• Original Assignee: DePuy Orthopaedics Incorporated (Johnson & Johnson)
• Inventors: Schwartz, Herbert E., Plouhar, Pamela
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US09/494,741
• Time in Patent Office: 1,089 Days
• Field of Search: 606/104, 606/72, 606/148, 606/232, 411/457, 411/371.2, 411/372.6, 411/486, 411/473, 411/510, 411/923
• US Class Current: 606/148
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 2017/0646 for insertion into cartillege, e.g. meniscus
• CPC Class Codes: A61B 2017/0647 having one single leg, e.g. tacks
• CPC Class Codes: A61F 2/30749 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2/30756 Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/30965 Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
• CPC Class Codes: A61F 2002/30115 circular-O-shaped
• CPC Class Codes: A61F 2002/30179 X-shaped
• CPC Class Codes: A61F 2002/30225 Flat cylinders, i.e. discs
• CPC Class Codes: A61F 2002/30233 Stepped cylinders, i.e. having discrete diameter changes
• CPC Class Codes: A61F 2002/30299 umbrella-shaped or mushroom-shaped
• CPC Class Codes: A61F 2002/30477 using sharp protrusions, e.g. spikes, for anchoring into connecting prosthetic part
• CPC Class Codes: A61F 2002/30751 for attaching cartilage scaffolds to underlying bone
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30879 Ribs
• CPC Class Codes: A61F 2002/30881 Circumferential ribs, flanges or fins
• CPC Class Codes: A61F 2002/30891 Plurality of protrusions
• CPC Class Codes: A61F 2002/30892 parallel
• CPC Class Codes: A61F 2220/0008 : Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0058 : X-shaped
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0093 : Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61F 2310/00365 : Proteins; Polypeptides; Degradation products thereof

Abstract

An apparatus for use in affixing material to a location under repair includes a material retention member and an anchor. The anchor is configured to be inserted into a cavity in bone tissue, the anchor having a first end and a second end. The anchor also includes one or more raised ribs. The material retention member extends radially from the first end of the anchor in a plurality of directions, the material retention member including at least one contact surface adapted to exert a retention force on material that is interposed between the material retention device and the bone tissue.

Claims

1. An apparatus for use in affixing material to a location under repair, the apparatus comprising:

an anchor configured to be inserted into a cavity in bone tissue, the anchor having a first end and a second end, the anchor having an exterior surface, the exterior surface including one or more raised ribs;

a material retention member extending radially from the anchor in a plurality of directions, the material retention member including at least one contact surface adapted to exert a retention force on material that is interposed between the material retention member and the bone tissue, wherein the material retention device comprises a plurality of spokes extending radially from the anchor in a plurality of directions, each spoke including at least a portion of said at least one contact surface; and

a loop member extending substantially around the first end of the anchor, the loop member coupled to the anchor via the plurality of spokes.

2. The apparatus of claim 1 wherein the loop member comprises a circular ring.

3. The apparatus of claim 1 wherein the loop member further comprises a plurality of spikes extending axially from said ring.

4. The apparatus of claim 1 wherein the one or more raised ribs extend circumferentially around at least a portion of the anchor.

5. The apparatus of claim 1 wherein the anchor comprises a shaft.

6. An assembly for use in effecting therapeutic reparation of a location of the body comprising, the assembly comprising:

a quantity of soft tissue repair material; and

a fixation device, the fixation device comprising

an anchor configured to be inserted into a cavity in bone tissue, the anchor having a first end and a second end; and

a material retention member extending radially from the anchor in a plurality of directions, the material retention member including at least one contact surface engaging at least a portion of the quantity of soft tissue repair material, wherein the material retention member comprises a plurality of spokes extending radially from the anchor in a plurality of directions, each spoke including at least a portion of said at least one contact surfaces; and

a loop member extending substantially around the first end of the anchor, the loop member coupled to the anchor via the plurality of spokes.

7. The apparatus of claim 6 wherein the loop member comprises a circular ring.

8. The apparatus of claim 6 wherein the loop member further comprises a plurality of spikes extending axially from said ring.

9. The assembly of claim 6 wherein the material retention member terminates in each direction at a distance from the anchor exceeding one-fourth the length of the anchor.

10. The apparatus of claim 6 wherein the anchor further comprises raised ribs extending from an outer surface thereof.

11. The apparatus of claim 6 wherein the one or more raised ribs extend circumferentially around at least a portion of the anchor.

12. The apparatus of claim 6 wherein the anchor comprises a shaft.

13. The apparatus of claim 6 wherein the anchor is cannulated.

14. The assembly of claim 6 wherein the quantity of soft tissue repair material includes a matrix.

15. An apparatus for use in affixing material to a location under repair, the apparatus comprising:

an anchor configured to be inserted into a cavity in bone tissue, the anchor having a first end and a second end;

a material retention member extending radially from the first end of the anchor in a plurality of directions, the material retention member including a plurality of spikes extending therefrom and adapted to contact material that is interposed between the material retention device and the bone toward the second end of the anchor, wherein the material retention member terminates in each direction at a distance from the anchor exceeding one-fourth the length of the anchor and further wherein the material retention device comprises a plurality of spokes extending radially from the anchor in a plurality of directions; and

a loop member extending substantially around the first end of the anchor, the loop member coupled to the anchor via the plurality of spokes.

16. The apparatus of claim 15 wherein said plurality of spikes extend from said loop member.

17. The apparatus of claim 15 wherein the anchor further includes one or more raised ribs extending from an outer surface thereof.

18. The apparatus of claim 15 wherein the anchor is cannulated.

19. The apparatus of claim 15 wherein the anchor defines a shaft.

20. An assembly for use in effecting therapeutic reparation of a location of the body, comprising:

a quantity of soft tissue repair material; and

a fixation device including (i) an anchor configured to be inserted into a cavity in bone tissue, and (ii) a plurality of spokes extending radially from said anchor in a plurality of directions, each of said plurality of spokes having a repair material contact portion spaced apart from said anchor which engages at least a portion of said quantity of soft tissue repair material,

wherein each of said plurality of spokes terminates in each direction at a distance from said anchor exceeding one-fourth of a length of said anchor, and

wherein each of said plurality of spokes is secured in a cantilevered manner to said anchor.

21. The apparatus of claim 20 wherein each of said plurality of spokes further includes at least one spike extending axially away from said spokes.

22. The apparatus of claim 20 wherein:

said anchor has an exterior surface,

said exterior surface possesses one or more raised ribs, and

said one or more raised ribs extend circumferentially around at least a portion of said anchor.

23. The apparatus of claim 20, wherein:

said anchor comprises an elongated shaft, and

each of said plurality of spokes extends from a proximal end portion of said elongated shaft.

24. The apparatus of claim 20, wherein each of said plurality of spokes further extends at an angle from a plane that is normal to said anchor.

25. The apparatus of claim 20 wherein, each of said plurality of spokes extends in a concave manner with respect to said soft tissue repair material.

26. The apparatus of claim 20 wherein, each of said plurality of spokes extends in a convex manner with respect to said soft tissue repair material.

27. The apparatus of claim 20, wherein said anchor is cannulated.

28. The apparatus of claim 20, wherein:

each said plurality of spokes possesses a first maximum width,

said anchor possesses a second maximum width, and

said first maximum width is less than said second maximum width.