Attachment device to attach tissue graft

1. A tissue graft attachment device comprising:

a platform member including a first edge and a second edge connected to the first edge by a top side and a substantially curved bottom side, the platform member defining:

a curved slot extending between the first edge and the second edge wherein the slot extends substantially to a central location between the first edge and the second edge and the slot is defined by a first inner edge and a second inner edge connected by a first inner side positioned between a central axis and the bottom side and a second inner side positioned between the central axis and the top side, and wherein the first inner side defines a shoulder near the central location, and further comprising a retaining mechanism disposed on the second inner side, the retaining mechanism comprising a leaf spring extending from the second inner side to the shoulder,

a first opening between the slot and the first edge, and

a second opening between the slot and the second edge;

a first filament passing through the first opening;

a second filament passing through the second opening; and

a graft connecting element passing through the slot to form a loop.

2. The device of claim 1 , wherein the slot extends along a central axis, and the first opening and the second opening are formed on the central axis.

3. The device of claim 1 , wherein the first opening and the second opening each have a circular cross-section.

4. The device of claim 1 , wherein the top side is substantially curved.

5. The device of claim 4 , wherein the top side and the bottom side are defined by a respective first radius of curvature and a second radius of curvature, wherein the first radius of curvature is different from the second radius of curvature.

6. The device of claim 1 , wherein the graft connecting element is a third filament.

7. The device of claim 1 , wherein the graft connecting element is a rigid band.

8. The device of claim 1 , further comprising:

a first side surface connecting the first edge, the second edge, the top side, and the bottom side; and

a second side surface connecting the first edge, the second edge, the top side, and the bottom side,

wherein the slot spans a distance between the first side surface and the second side surface.

9. The device of claim 8 , wherein the first opening spans the distance between the first side surface and the second side surface.

10. The device of claim 8 , wherein the second opening spans the distance between the first side surface and the second side surface.

11. The device of claim 1 wherein the platform member defines a curved central axis, the curved slot defines a curved slot axis, and curved slot axis coincides with the curved central axis.

12. The device of claim 1 , wherein the first opening and the second opening each have a cross-section that is one of square and rectangular.

13. A tissue graft attachment device comprising:

a platform member including a first edge and a second edge connected to the first edge by a top side and a bottom side, the platform member defining a slot extending between the first edge and the second edge, and further comprising a first opening between the slot and the first edge; and a second opening between the slot and the second edge;

a graft connecting element passing through the slot to form a loop; and

a filament coupled to the platform member and the graft connecting element such that manipulating the filament moves the graft connecting element in the slot;

wherein a first end of the filament is passed through the first opening, the second opening, the slot, and the loop formed in the graft connecting element such that pulling either the first end or a second end of the filament pulls the graft connecting element towards the first edge.

14. The device of claim 13 , the first end of the filament passed through the first opening, the second opening, the slot, and the loop further comprises:

the first end passed through the second opening;

the first end passed through the first opening after being passed through the second opening;

the first end passed through the slot after being passed through the first opening; and

the first end passed through the first opening after being passed through the slot.

15. The device of claim 14 , wherein the first end passed through the slot after being passed through the first opening comprises the first end passed through the loop.