Adjustable fixation device
An adjustable fixation device includes a cleat portion and a suture portion, where the suture portion has a loop portion and a suture tail. Pulling on the suture tail places in tension a graft coupled to the loop portion. The suture is arranged to convey a mechanical advantage so that substantial force can be readily and controllably applied to the graft.
1. An adjustable fixation device, comprising:
a cleat comprising first and second cleat openings and a connector seat between the openings;
a flexible connector having first and second cleat loops through the first and second openings of the cleat and a tensioning end portion, the connector comprising an intra-connector sliding loop engagement portion where the first cleat loop slidably traverses the second cleat loop and a connector-device sliding loop engagement portion, the tensioning end portion of the flexible connector further comprising an axial sliding connector-connector engagement portion and a transverse sliding connector-connector engagement portion transversely engaging the first and second cleat loops and extending between portions of the first and second cleat loops and the connector seat.
2. The adjustable fixation device of claim 1 , wherein the flexible connector is a suture.
3. The adjustable fixation device of claim 1 , wherein the axial sliding connector-connector engagement portion comprises a portion of the tensioning end being positioned in an axial channel through a portion of the first cleat loop or the second cleat loop.
4. The adjustable fixation device of claim 3 , wherein the axial channel is formed by axial threading of the tensioning end through the portion of the cleat loop.
5. The adjustable fixation device of claim 1 , wherein the transverse sliding connector-connector engagement portion comprises a portion of the tensioning end being transversely threaded through the first cleat loop or the second cleat loop.
6. The adjustable fixation device of claim 5 , wherein the transverse sliding connector-connector engagement portion comprises a portion of the tensioning end being positioned in a transverse channel through a portion of the first cleat loop or the second cleat loop.
7. The adjustable fixation device of claim 6 , wherein the transverse channel is formed by transverse threading of the tensioning end through the connector-connector engagement portion of the cleat loop.
8. The adjustable fixation device of claim 1 , wherein the cleat further comprises lateral guide holes for receiving guiding sutures.
9. The adjustable fixation device of claim 1 , wherein at least one of said first and second cleat openings is tapered.
10. The adjustable fixation device of claim 1 , further comprising a protective cover for the flexible connector at a portion of the flexible connector comprising at least one selected from the group consisting of the intra-connector sliding loop engagement portion and the connector-device sliding loop engagement portion.
11. An adjustable fixation system, comprising:
an adjustable fixation device, the adjustable fixation device comprising a cleat comprising first and second cleat openings and a connector seat between the openings, and a flexible connector having first and second cleat loops through the first and second openings of the cleat and a tensioning end portion, the connector comprising an intra-connector sliding loop engagement portion where the first cleat loop slidably traverses the second cleat loop and a connector-device sliding loop engagement portion, the tensioning end portion of the flexible connector further comprising an axial sliding connector-connector engagement portion and a transverse sliding connector-connector engagement portion transversely engaging the first and second cleat loops and extending between portions of the first and second cleat loops and the connector seat; and,
an implantable medical device slidably connected to the adjustable fixation device at the connector-device sliding loop engagement portion.
12. The adjustable fixation system of claim 11 , wherein the implantable device is a graft.
13. The adjustable fixation system of claim 11 , wherein the implantable medical device is a second cleat comprising first and second holes, and wherein the connector-device engagement portion of the flexible connector is threaded through one of the holes in a first direction and through the other of the holes in a second direction forming a sliding connector-device engagement.
14. The adjustable fixation system of claim 11 , wherein the implantable medical device comprises a plate comprising first and second holes, and wherein the connector-device engagement portion of the flexible connector is threaded through one of the holes in a first direction and through the other of the holes in a second direction forming a sliding connector-device engagement.
15. The adjustable fixation system of claim 11 , wherein the cleat further comprises lateral guide holes for receiving guiding sutures.
16. The adjustable fixation system of claim 11 , further comprising a second adjustable fixation device having a second connector-device sliding loop engagement portion, the implantable medical device being slidably connected between the connector-device sliding loop engagement portion of the adjustable fixation device and the connector-device sliding loop engagement portion of the second adjustable fixation device.
17. The adjustable fixation system of claim 11 , further comprising a protective cover for the flexible connector at a portion of the flexible connector comprising at least one selected from the group consisting of the intra-connector sliding loop engagement portion and the connector-device sliding loop engagement portion.
18. The adjustable fixation system of claim 11 , wherein the system provides a 4:1 mechanical advantage.
19. A method for the adjustable fixation of an implantable medical device, comprising the steps of:
providing an adjustable fixation device, the adjustable fixation device comprising a cleat comprising first and second cleat openings and a connector seat between the openings, and a flexible connector having first and second cleat loops through the first and second openings of the cleat and a tensioning end portion, the connector comprising an intra-connector sliding loop engagement portion where the first cleat loop slidably traverses the second cleat loop and a connector-device sliding loop engagement portion, the tensioning end portion of the flexible connector further comprising an axial sliding connector-connector engagement portion and a transverse sliding connector-connector engagement portion transversely engaging the first and second cleat loops and extending between portions of the first and second cleat loops and the connector seat;
providing an implantable medical device slidably connected to the adjustable fixation device at the connector-device sliding loop engagement portion;
positioning the adjustable fixation device and the implantable medical device in the body of the patient;
applying a tensioning force to the tensioning end portion of the flexible connector to tighten and secure the adjustable fixation device and the implantable medical device in position in the body of the patient.
20. The method of claim 19 , wherein the flexible connector is a suture.
21. The method of claim 19 , wherein the axial sliding connector-connector engagement portion comprises a portion of the tensioning end being positioned in an axial channel through a portion of the first cleat loop or the second cleat loop.
22. The method of claim 21 , wherein the axial channel is formed by axial threading of the tensioning end through the portion of the cleat loop.
23. The method of claim 21 , wherein the transverse sliding connector-connector engagement portion comprises a portion of the tensioning end being transversely threaded through the first cleat loop or the second cleat loop.
24. The method of claim 23 , wherein the transverse sliding connector-connector engagement portion comprises a portion of the tensioning end being positioned in a transverse channel through a portion of the first cleat loop or the second cleat loop.
25. The method of claim 24 , wherein the transverse channel is formed by transverse threading of the tensioning end through the connector-connector engagement portion of the cleat loop.
26. The method of claim 19 , wherein the cleat further comprises lateral guide holes for receiving guiding sutures.
27. The method of claim 19 , wherein the implantable medical device is a plate and the fixation is for syndesmosis repair.
28. The method of claim 19 , wherein the method is applied to at least one selected from the group consisting of ligamentum teres repair, anterior cruciate ligament repair, and syndesmosis repair.
29. The method of claim 19 , wherein the method provides a 4:1 mechanical advantage.