DOUBLE BUNDLE ACL REPAIR SYSTEM

• US 20120059469A1
• Filed: 08/30/2011
• Published: 03/08/2012
• Est. Priority Date: 03/31/2009
• Status: Active Grant

• Current Assignee: IMDS LLC, Thomas H. Myers
• Original Assignee: Medicinelodge, Inc (Nelso Antolotti), Thomas H. Myers
• Inventors: Myers, Thomas H., Lorang, Douglas M., Triplett, Daniel J., Lewis, Chad, Howard, Bryan, Hansen, Nathan
• Granted Patent: US 8,535,377 B2
• Time in Patent Office: Days
• US Class Current: 623/13.14
• 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 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/1714 for applying tendons or ligaments implements for applying tendons or ligaments A61F2/0805
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 2017/0404 Buttons
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening lateral eyelet for attaching suture to needle A61B2017/06019
• CPC Class Codes: A61B 2017/0419 H-fasteners
• CPC Class Codes: A61B 2017/0438 slotted, i.e. having a longitudinal slot for enhancing their elasticity
• 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
• CPC Class Codes: A61F 2/0805 Implements for inserting tendons or ligaments
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2002/0852 Fixation of a loop or U-turn, e.g. eyelets, anchor having multiple holes
• CPC Class Codes: A61F 2002/0858 Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges
• CPC Class Codes: A61F 2002/0882 Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone
• CPC Class Codes: A61F 2240/005 Templates
• CPC Class Codes: A61F 2240/008 Means for testing implantable prostheses

Abstract

A system for single tunnel, double bundle anterior cruciate ligament reconstruction includes implant constructs and instruments. The implant constructs provide a combination of cortical fixation and bone tunnel aperture fixation. The implant constructs separate a graft into distinct bundles. The instruments are used to prepare shaped bone tunnels to receive the implant constructs and graft bundles. Methods for reconstructing the antero-medial and postero-lateral bundles of the anterior cruciate ligament may rely on single femoral and tibial tunnels and a single strand of graft.

Claims

1. A system for securing a ligament graft to a bone;

wherein the graft comprises a first portion and a second portion;

wherein the bone comprises a tunnel extending between a first opening and an opposite second end, wherein the tunnel comprises a first longitudinal ridge and an opposite second longitudinal ridge;

the system comprising;

a first fixation device securable within the first opening, wherein the first fixation device comprises a first longitudinal groove, an opposite second longitudinal groove, a first longitudinal indentation between the first and second grooves, an opposite second longitudinal indentation, a structural portion, and a non-structural portion coupled to the structural portion;

a second fixation device securable to the bone proximate the second end; and

a connector linking the first and second fixation devices;

wherein, when the first and second fixation devices are secured to the bone, the first graft portion is in the first groove, the second graft portion is in the second groove, the first ridge is in the first indentation, the second ridge is in the second indentation, and the structural portion is coupled to the connector.

2. The system of claim 1, wherein, when the first and second fixation devices are secured to the bone, the non-structural portion is between the first and second graft portions.

3. The system of claim 1, wherein the structural portion and the non-structural portion are separate components.

4. The system of claim 1, wherein the structural portion comprises a cap;

wherein the non-structural portion comprises a base;

wherein a portion of the first groove is formed in the base and another portion of the first groove is formed in the cap.

5. The system of claim 1, wherein the first fixation device comprises a porous portion and a non-porous solid portion coupled to the porous portion.

6. The system of claim 5, wherein, when the first and second fixation devices are secured to the bone, the solid portion is coupled to the connector and the porous portion is between the first and second graft portions.

7. The system of claim 5, wherein the porous portion and the solid portion are separate components.

8. The system of claim 1, wherein the first fixation device comprises a core and an outer layer over the core.

9. The system of claim 8, wherein, when the first and second fixation devices are secured to the bone, the core is coupled to the connector and the outer layer contacts at least a portion of the first or second graft portions.

10. The system of claim 8, wherein the core is solid and the outer layer is porous.

11. The system of claim 1, wherein the first fixation device comprises a central longitudinal hole and a longitudinal slot crossing the hole and extending through the first and second indentations;

wherein the second fixation device comprises a washer;

wherein the connector comprises a screw with a threaded portion and a head opposite the threaded portion;

wherein the screw threads longitudinally into the slot;

wherein the washer encircles the head of the screw.

12. A system for securing a ligament graft to a bone;

wherein the graft comprises a first portion and a second portion;

wherein the bone comprises a tunnel extending between a first opening and an opposite second end, wherein the tunnel comprises a first longitudinal ridge and an opposite second longitudinal ridge;

the system comprising;

a first fixation device securable within the first opening, wherein the first fixation device comprises a first longitudinal groove, an opposite second longitudinal groove, a first longitudinal indentation between the first and second grooves, an opposite second longitudinal indentation, a porous portion, and a non-porous solid portion coupled to the porous portion;

a second fixation device securable to the bone proximate the second end; and

a connector linking the first and second fixation devices;

wherein, when the first and second fixation devices are secured to the bone, the first graft portion is in the first groove, the second graft portion is in the second groove, the first ridge is in the first indentation, and the second ridge is in the second indentation.

13. The system of claim 12, wherein, when the first and second fixation devices are secured to the bone, the solid portion is coupled to the connector and the porous portion is between the first and second graft portions.

14. The system of claim 12, wherein the porous portion and the solid portion are separate components.

15. The system of claim 12, wherein the first fixation device comprises a core and an outer layer over the core.

16. The system of claim 15, wherein, when the first and second fixation devices are secured to the bone, the core is coupled to the connector and the outer layer contacts at least a portion of the first or second graft portions.

17. The system of claim 15, wherein the core is solid and the outer layer is porous.

18. The system of claim 12, wherein the first fixation device comprises a central longitudinal hole and a longitudinal slot crossing the hole and extending through the first and second indentations;

wherein the second fixation device comprises a washer;

wherein the connector comprises a screw with a threaded portion and a head opposite the threaded portion;

wherein the screw threads longitudinally into the slot;

wherein the washer encircles the head of the screw.

19. A system for securing a ligament graft to a bone;

wherein the graft comprises a first portion and a second portion;

wherein the bone comprises a tunnel extending between a first opening and an opposite second end, wherein the tunnel comprises a first longitudinal ridge and an opposite second longitudinal ridge;

the system comprising;

a first fixation device securable within the first opening, wherein the first fixation device comprises a first longitudinal groove, an opposite second longitudinal groove, a first longitudinal indentation between the first and second grooves, and an opposite second longitudinal indentation;

a second fixation device securable to the bone proximate the second end; and

a connector linking the first and second fixation devices;

wherein, when the first and second fixation devices are secured to the bone, the first graft portion is in the first groove, the second graft portion is in the second groove, the first ridge is in the first indentation, and the second ridge is in the second indentation.

20. The system of claim 19, wherein the first fixation device comprises a core and an outer layer over the core.

21. The system of claim 20, wherein, when the first and second fixation devices are secured to the bone, the core is coupled to the connector and the outer layer contacts at least a portion of the first or second graft portions.

22. The system of claim 20, wherein the core is solid and the outer layer is porous.

23. The system of claim 19, wherein the first fixation device comprises a central longitudinal hole and a longitudinal slot crossing the hole and extending through the first and second indentations;

wherein the second fixation device comprises a washer;

wherein the connector comprises a screw with a threaded portion and a head opposite the threaded portion;

wherein the screw threads longitudinally into the slot;

wherein the washer encircles the head of the screw.