Knot delivery device

1. A knot delivery device for securing a suture, comprising:

an elongated body having a proximal end and a distal end;

a pre-configured knot disposed at the distal end of the elongated body;

a suture snare having a snare formed by a loop of flexible material configured to be disposed over and capture suture material, the suture snare having opposing ends routed through a lumen at the distal end of the elongated body, wherein the snare extends through the pre-configured knot; and

a suture locker secured to one end of material forming the pre-configured knot, wherein tension applied to the suture locker tightens the pre-configured knot.

2. The knot delivery device of claim 1 , wherein the suture snare is detachably secured to the elongated body.

3. The knot delivery device of claim 1 , wherein the suture locker is detachably secured to the elongated body.

4. The knot delivery device of claim 1 , wherein the snare and the material forming the pre-configured knot extend through at least one lumen having an opening at the distal end of the elongated body.

5. The knot delivery device of claim 4 , wherein the snare and the material forming the pre-configured knot each extend separate lumens having openings at the distal end of the elongated body.

6. The knot delivery device of claim 4 , wherein the opening is sized to allow passage of the material forming the pre-configured knot but not a pattern of turns of the pre-configured knot.

7. The knot delivery device of claim 1 , wherein proximal movement of the suture snare is configured to pull the snare through the pre-configured knot.

8. The knot delivery device of claim 1 , wherein proximal movement of the suture locker is configured to tighten the pre-configured knot.

9. The knot delivery device of claim 1 , wherein the suture locker comprises a force indicator.

10. The knot delivery device of claim 9 , wherein the force indicator comprises a spring having a biasing force, wherein a tension sufficient to tighten the pre-configured knot is configured to overcome the biasing force.

11. The knot delivery device of claim 9 , wherein the force indicator comprises a visual marking configured to indicated when a tension sufficient to tighten the pre-configured knot has been applied to the suture locker.

12. The knot delivery device of claim 9 , wherein the force indicator comprises a frangible element secured to the material forming the pre-configured knot.

13. The knot delivery device of claim 1 , wherein the material forming the pre-configured knot comprises a rail limb and a non-rail limb, wherein the rail limb is secured to the suture locker.

14. The knot delivery device of claim 13 , wherein the snare extends through at least one helical turn of the non-rail limb around the rail limb.

15. A method for delivering a pre-configured knot for securing a suture, comprising:

providing a knot delivery device having an elongated body with a proximal end and a distal end, wherein the pre-configured knot is disposed at the distal end of the elongated body, a suture snare having a snare formed by a loop of flexible material configured to be disposed over and capture suture material, the suture snare having opposing ends routed through a lumen at the distal end of the elongated body, wherein the snare extends through the pre-configured knot, and a suture locker secured to one end of material forming the pre-configured knot;

capturing suture material with the snare;

withdrawing the snare to pull the captured suture material through the pre-configured knot;

advancing the pre-configured knot over the suture material to a desired location; and

tightening the pre-configured knot around the suture material.

16. The method of claim 15 , wherein withdrawing the snare comprises detaching the suture snare from the elongated body.

17. The method of claim 15 , wherein tightening the pre-configured knot comprises detaching the suture locker from the elongated body.

18. The method of claim 15 , wherein tightening the pre-configured knot comprises applying tension to the suture locker until sufficient force has been indicated by one of a visual indicator or breakage of a component of the suture locker.