VARIABLE TENSION POST FIXATION

• US 20100100127A1
• Filed: 10/13/2009
• Published: 04/22/2010
• Est. Priority Date: 10/13/2008
• Status: Active Grant

• Current Assignee: Rockford Orthopaedic Sports Medicine Services, LLC
• Original Assignee: Rockford Orthopaedic Sports Medicine Services, LLC
• Inventors: Trenhaile, Scott
• Granted Patent: US 8,382,799 B2
• Time in Patent Office: Days
• US Class Current: 606/232
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/0448 Additional elements on or within the anchor
• CPC Class Codes: A61B 2017/0453 threaded elements, e.g. set screws

Abstract

A variable tension post fixation device includes an outer body including a shaft, a tip, and a central core, and an inner body including a suture hole and configured to be advanceable within the central core, wherein the outer body is configured for allowing insertion of the outer body into a pilot hole in a bone, and wherein the outer body and inner body cooperate to secure sutures in the bone.

Claims

1. A variable tension post fixation device, comprising:

an outer body including a shaft, a tip, and a central core, wherein the outer body is configured for allowing insertion of the outer body into a pilot hole in a bone; and

an inner body including a suture hole and configured to be advanceable within the central core,

wherein the outer body and inner body cooperate to secure sutures in the bone.

2. The device of claim 1, wherein the central core further includes a series of concentric bores configured to separately and distinctly couple with a driver and with the inner body.

3. The device of claim 2, wherein the inner body comprises a key tip configured to be rotatably locked with a locking channel in the series of concentric channels, a key shaft including a central suture hole, and a key head including at least one perimeter suture hole, and a suture collar, wherein the key head is configured to receive a driver.

4. The device of claim 3, wherein the key head includes locking pin slots insertable into locking pin slots of the outer body to prevent the inner body from rotating relative to the outer body in a locked position.

5. The device of claim 1, wherein the inner body comprises at least one pair of axially oriented sutures holes.

6. The device of claim 1, wherein the outer body is a threaded, headless screw.

7. The device of claim 1, wherein the inner body is adjustable to a locked position within the central core of the outer body.

8. The device of claim 1, wherein the inner body is partially cannulated.

9. The device of claim 1, wherein the inner body comprises threads on an exterior surface configured to mate with threads on an interior surface of the central core of the outer body.

10. A device for variable tension suture fixation, comprising:

a cylindrical outer body configured for insertion into bone and comprising a threaded shaft, a conical tip extending from a first end, and an incompletely cannulated core extending open to the exterior at a second end; and

an elongated inner body including a distal end, an opposing proximal end, and at least one suture hole,

wherein the elongated inner body is configured for removable insertion within the incompletely cannulated core, and

wherein the inner body cooperates with the outer body to provide for variable tension fixation of sutures.

11. The device of claim 10, further comprising a driver configured to removably couple with the outer body independent of the inner body.

12. The device of claim 11, wherein the driver is cylindrical and includes expansion tabs that correspond to side channels of the outer body.

13. The device of claim 10, wherein the head includes at least two suture holes.

14. The device of claim 10, wherein an outer diameter of the head is approximately equal to an outer diameter of the outer body.

15. The device of claim 10, wherein an outer diameter of the inner body is greater than an outer diameter of the outer body.

16. The device of claim 10, wherein in a fully assembled locked position, the head is spaced apart from the proximal end.

17. The device of claim 10, wherein the outer body includes channels extending partially along the outer body, wherein the channels are configured to receive a driver.

18. The device of claim 10, wherein the device includes a fenestrated end.

19. A single fixation device for variably tensioning ACL bundles, comprising:

means for securing and tensioning a plurality of sutures to allow a first individual ACL bundle to be variably tensioned independent of a second ACL bundle.

20. The device of claim 19, wherein the means comprises an inner body rotatably coupled to an outer body, wherein tension of the plurality of sutures is independently adjusted through rotation of the outer body and the inner body in combination or individually.