BONE-DERIVED IMPLANTABLE DEVICES FOR SUBCHONDRAL TREATMENT OF JOINT PAIN

• US 20110125272A1
• Filed: 11/19/2010
• Published: 05/26/2011
• Est. Priority Date: 11/20/2009
• Status: Active Grant

• Current Assignee: Zimmer Knee Creations, Inc. (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Knee Creations, LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: BAGGA, CHARANPREET S., HANSON, SHAUN B.
• Granted Patent: US 8,801,800 B2
• Time in Patent Office: Days
• US Class Current: 623/18.11
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/7098 wherein the implant is permeable or has openings, e.g. fenestrated screw hollow surgical screws A61B17/864
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/38 for elbows or knees
• CPC Class Codes: A61F 2/4601 for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/2839 Bone plugs or bone graft dowels
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30179 X-shaped
• CPC Class Codes: A61F 2002/30224 cylindrical
• CPC Class Codes: A61F 2002/30237 partial tubes
• CPC Class Codes: A61F 2002/4631 the prosthesis being specially adapted for being cemented

Abstract

Implantable devices for the surgical treatment of bone, and particularly to a bone defect at a joint region, and even more particularly at the subchondral bone level of the joint region, are disclosed. The implantable devices may be formed of a bone material, and configured to serve the dual functions of providing mechanical strength and structural integrity to the area to be treated, while also facilitating the dispersal of a flowable material in the same area. Associated delivery tools are also provided.

Claims

1. An implantable device for treatment of a bone defect, comprising:

a first, leading end, a second, trailing end, and a main body extending between the ends, a central opening extending through the length of the main body, and a channel in fluid communication with the central opening to allow extrusion of a flowable material from the central opening to outside the main body, the device being formed of bone material.

2. The device of claim 1, wherein the bone material is an allograft material.

3. The device of claim 2, further including a fin on the main body.

4. The device of claim 3, further including a recess on the main body.

5. The device of claim 4, wherein there are a plurality of fins and a plurality of recesses, each pair of fins being separated by a recess.

6. The device of claim 4, wherein the channel resides within the recess.

7. The device of claim 6, further including a plurality of channels.

8. The device of claim 7, wherein the channels reside in a predetermined arrangement on the main body.

9. A method of treating a bone defect, comprising the steps of:

providing an implantable device having a first, leading end, a second, trailing end, and a main body extending between the ends, a central opening extending through the length of the main body, and a channel in fluid communication with the central opening to allow extrusion of a flowable material from the central opening to outside the main body, the device being formed of allograft material;

inserting the implantable device in or adjacent to the bone defect;

introducing a flowable material through the central opening and out of the channel; and

allowing the flowable material to extrude away from the device.

10. The method of claim 9, wherein the device further includes a fin on the main body.

11. The method of claim 10, wherein the device further includes a recess on the main body.

12. The method of claim 11, wherein the channel resides within the recess.

13. The method of claim 11, wherein the flowable material is extruded into the recess.

14. The method of claim 9, wherein the defect is near an articular surface of a joint.

15. The method of claim 14, wherein the joint is a knee joint.

16. The method of claim 9, wherein the bone defect is a bone marrow lesion.

17. The method of claim 9, wherein the flowable material is a bone cement.

18. An implantable device for treatment of a bone defect, comprising:

a first, leading end, a second, trailing end, a main body extending between the ends, and at least one recess extending down at least a portion of the main body, the device being formed of a bone material.

19. The implantable device of claim 18, wherein the bone material is an allograft material.

20. The implantable device of claim 18, further comprising a plurality of recesses extending down a length of the main body.

21. The implantable device of claim 18, wherein the at least one recess encircles the main body.