Graft preparation system
Systems and methods for preparing a ligament graft for a ligament reconstruction procedure are provided. In general, the described techniques utilize a graft holder construct having a graft preparation holder and a suture assembly removably coupled thereto. The graft preparation holder includes an elongate support rail having a longitudinal axis, and a plurality of leaf segments positioned along the longitudinal axis in a spaced relationship and extending laterally from the support rail. The leaf segments can bend to a graft holding configuration so as to define a graft receiving channel configured to receive a graft therethrough. The holder also has at least one support structure configured to mate with the leaf segments to provide stability and rigidity to the segments. The suture assembly has at least one suture tail that can be pulled to affix the suture assembly to a graft without penetrating the graft.
1. A graft preparation holder comprising:
an elongate support rail having a first end and a second end with a longitudinal axis extending between the first and second ends;
at least one first leaf segment extending laterally from a side of the support rail, the at least one first leaf segment comprising:
a first living hinge configured to bend about a hinge axis that is parallel to the longitudinal axis; and
a second leaf segment extending laterally from the side of the support rail and separated from the at least one first leaf segment along the longitudinal axis, the second leaf segment comprising:
a second living hinge configured to bend about the hinge axis that is parallel to the longitudinal axis, and
at least first and second protrusions, the first protrusion configured to mate with the second protrusion when the second leaf segment is bent along the second living hinge to define a graft receiving channel when the holder is formed.
2. The graft preparation holder of claim 1 , wherein the at least first and second protrusions extend from the second leaf segment in a direction perpendicular to the longitudinal axis of the elongate support rail such that the at least first and second protrusions are disposed on opposite sides of the second living hinge.
3. The graft preparation holder of claim 2 , wherein the second protrusion has a number of ridges and grooves on a surface facing the first protrusion.
4. The graft preparation holder of claim 3 , wherein the first protrusion has a number of ridges and grooves on a surface facing the second protrusion.
5. The graft preparation holder of claim 4 , wherein the number of ridges and grooves of the first protrusion is less than the number of ridges and grooves of the second protrusion.
6. The graft preparation holder of claim 5 , wherein a groove of the first protrusion is configured to receive therein a middle ridge of the second protrusion when the second leaf segment is bent along the living hinge.
7. The graft preparation holder of claim 6 , wherein a size of a surface of the second protrusion is larger than a size of a surface of the first protrusion.
8. The graft preparation holder of claim 1 , wherein the second leaf segment includes at least one cleat configured to retain a suture at a desired tension.
9. The graft preparation holder of claim 1 , wherein the graft preparation holder further comprises a support panel extending from the second leaf segment adjacent the second end of the elongate support rail, wherein the support panel is configured to provide rigidity to the holder, the support panel comprising mating features configured to attach the support panel to the at least one first leaf segment and the second leaf segment.
10. A graft holder construct comprising:
an elongate body having a support rail along one side thereof with a leaf segment extending laterally from the support rail and having a living hinge, the support rail having first and second ends with a longitudinal axis extending therebetween, the leaf segment having at least first and second protrusions, the first protrusion being configured to mate with the second protrusion when the leaf segment is bent along the living hinge to define a graft receiving channel; and
a suture assembly comprising a plurality of windings spaced longitudinally along the support rail and a suture tail positioned adjacent to the support rail.
11. The graft holder construct of claim 10 , wherein the leaf segment is one of a plurality of leaf segments, wherein at least one slot is formed between adjacent leaf segments of the plurality of leaf segments, and wherein the at least one slot is configured to engage a winding.
12. The graft holder construct of claim 11 , wherein at least one of the plurality of leaf segments has a different width from one or more of the plurality of leaf segments, the widths measured along an axis parallel to the longitudinal axis of the support rail.
13. The graft holder construct of claim 12 , wherein the width of at least one of the plurality of leaf segments defines a distance between slots and therefore a distance between windings.
14. A method of preparing a graft for a surgical procedure, the method comprising:
positioning a graft holder construct around a portion of the graft, the graft holder construct comprising:
an elongate body having a support rail along one side thereof extending along a longitudinal axis with a leaf segment extending laterally from the support rail, the leaf segment having a living hinge configured to bend about a hinge axis that is parallel to the longitudinal axis and at least first and second protrusions; and
a suture assembly comprising a plurality of windings in an open position spaced longitudinally along the support rail and a suture tail positioned adjacent to the support rail;
bending the leaf segment about the living hinge so as to define a graft receiving channel to secure the graft holder construct around the portion of the graft, wherein the first protrusion is configured to mate with the second protrusion when the leaf segment is bent about the living hinge; and
pulling the suture tail to close the windings around the graft such that the plurality of windings encircle the graft and secure the portion of the graft.
15. The method of claim 14 , wherein the second protrusion has a number of ridges and grooves on a surface facing the first protrusion.
16. The method of claim 15 , wherein the first protrusion has a number of ridges and grooves on a surface facing the second protrusion.
17. The method of claim 16 , wherein the number of ridges and grooves on the first protrusion is less than the number of ridges and grooves of the second protrusion.
18. The method of claim 17 , wherein a groove of the first protrusion is configured to receive therein a middle ridge of the second protrusion when the leaf segment member is bent.
19. The method of claim 18 , wherein a size of a surface of the second protrusion is larger than a size of a surface of the first protrusion.