Systems and methods for ligament graft preparation
Systems and methods for preparing a ligament graft for a ligament reconstruction procedure are provided. In general, the described techniques utilize a graft preparation system having a holder and a delivery suture assembly removably coupled thereto. The delivery suture assembly can include a spine coupled with an anchor suture configured to form a self-tightening knot used to position the assembly around a graft and a plurality of suture windings configured to be affixed to the graft when the assembly is deployed. The assembly is delivered to the graft using the holder and the sutures can be affixed to the graft without penetrating therethrough. The spine helps to evenly distribute the load among the windings compressing the graft which are thus are capable of withstanding increased loads. Thus, an improved, simplified, and time- and labor-saving approach to preparing ligament grafts is provided.
1. A graft preparation system comprising:
an elongate holder having a first surface and a second surface and configured to receive a graft adjacent the second surface thereof;
a spine having first and second ends;
a plurality of windings formed from a first suture and spaced longitudinally along the spine, each winding being coupled to the spine by passing the first suture through attachment elements longitudinally spaced along the spine; and
a second, anchor suture configured to position the spine and the plurality of windings coupled thereto around the graft, the anchor suture being coupled to the spine by passing through at least one of the attachment elements adjacent to the first end of the spine, the anchor suture having a tail and a collapsible loop surrounding the elongate holder wherein the anchor suture is selectively removable from the elongate holder.
2. The graft preparation system of claim 1 , wherein at least one of the attachment elements comprises an eyelet formed in the spine.
3. The graft preparation system of claim 2 , wherein the eyelet is formed integrally with the spine.
4. The graft preparation system of claim 1 , wherein the spine is removably positioned along the first surface of the elongate holder.
5. The graft preparation system of claim 1 , wherein the elongate holder has a changeable configuration that is configured to be changed to separate the spine from the elongate holder.
6. The graft preparation system of claim 1 , wherein the elongate holder is substantially cylindrical in shape and the second surface is an inner surface.
7. The graft preparation system of claim 1 , wherein the elongate holder comprises a substantially rectangular element and the second surface is an inner surface.
8. The graft preparation system of claim 7 , wherein at least one element selected from the spine, the plurality of windings, and the anchor suture is removably coupled with the elongate holder.
9. The graft preparation system of claim 1 , wherein windings from the plurality of windings form a criss-crossing pattern along a surface of the elongate holder.
10. The graft preparation system of claim 1 , wherein the anchor suture is configured to form a snare comprising a self-tightening knot.
11. The graft preparation system of claim 1 , wherein windings from the plurality of windings include first and second tails extending from the second end of the spine opposite to the first end of spine being coupled to the anchor suture.
12. The graft preparation system of claim 1 , wherein the anchor suture is formed integrally with the spine.
13. The graft preparation system of claim 1 , wherein the anchor suture is configured to penetrate through the graft.