Composite interference screws and drivers

Patent metadata

Field	Value
Publication number	US-9808337-B2
Application number	US-201514670794-A
Country	US
Kind code	B2
Filing date	Mar 27, 2015
Priority date	Mar 10, 2010
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

The present disclosure relates to a delivery device and screw combination. The combination includes a delivery device comprising a handle and a shall coupled to the handle, the shaft including a proximal end, a distal end, a non-circular cannulation, and markings along a length of the shaft; an interference screw coupled to the delivery device comprising a proximal end and a distal end, the screw including threads extending in an open helical form from the proximal end to the distal end, a suture bridge located at a distal end of the screw and housed within a slot of the delivery device shaft, and a plurality of runners extending longitudinally along an interior of the screw, the runners housed within grooves of the delivery device shaft; and a suture disposed around the suture bridge, ends of the suture extending through the cannulation of the delivery device shaft.

First claim

The invention claimed is:

1. A delivery device and screw combination comprising:
a delivery device comprising a handle and a shaft coupled to the handle, the shaft including a proximal end, a distal end, and non-circular cannulation;
an interference screw coupled to the delivery device comprising a proximal end and a distal end, the screw including threads extending in an open helical form from the proximal end to the distal end, a plurality of runners extending longitudinally along an interior of the screw, the runners housed within grooves of the delivery device shaft, and a suture bridge connected to and extending transversely between distal terminuses of the plurality of runners, the suture bridge housed within a slot of the delivery device shaft; and
a suture disposed around the suture bridge with ends of the suture extending through the cannulation of the delivery device shaft.

2. The combination of claim 1 wherein the distal end of the delivery device shaft includes the slot and the grooves extending from the slot on either side of the delivery device shaft.

3. The combination of claim 1 wherein the distal end of the delivery device shaft is split into a first portion and a second portion spaced apart from the first portion by the slot of the delivery device shaft.

4. The combination of claim 1 wherein the distal end of the delivery device shaft terminates at a cutting edge.

5. The combination of claim 1 wherein the distal end of the delivery device shaft has an awl shape.

6. The combination of claim 1 wherein the distal end of the delivery device shaft extends beyond the distal end of the interference screw.

7. The combination of claim 1 wherein the non-circular cannulation is any one of an oval shape and a rectangular shape.

8. The combination of claim 1 wherein the plurality of runners includes two opposed runners.

9. The combination of claim 1 wherein the suture bridge includes a distal end with a concave shape.

10. The combination of claim 1 wherein the suture bridge extends a partial length of the interference screw.

11. The combination of claim 1 wherein the suture bridge is located to one side of the interference screw.

12. The combination of claim 1 further comprising a pointed tip extending, distally, from the distal terminuses of the plurality of runners; and a transverse through hole defined by the pointed tip.

13. The combination of claim 1 further comprising a web extending between adjacent threads at the distal end of the interference screw and spanning any one of 180 degrees, less than 180 degrees, and more than 180 degrees, circumferentially, around the interference screw.

14. The combination of claim 13 wherein the web is perforated.

15. The combination of claim 1 further comprising a web extending between adjacent threads at the distal end of the interference screw and spanning between the runners.

16. A method of attaching tissue to bone comprising:
inserting an interference screw into a bone using a delivery device and screw combination, the delivery device and screw combination comprising:
a delivery device comprising a handle and a shaft coupled to the handle, the shaft including a proximal end, a distal end, and a non-circular cannulation;
the interference screw coupled to the delivery device comprising a proximal end and a distal end, the screw including threads extending in an open helical form from the proximal end to the distal end, a plurality of runners extending longitudinally along an interior of the screw, the runners housed within grooves of the delivery device shaft, and a suture bridge connected to and extending transversely between distal terminuses of the plurality of runners, the suture bridge housed within a slot of the delivery device shaft; and
a suture disposed around the suture bridge with ends of the suture extending through the cannulation of the delivery device shaft;

removing the delivery device from the inserted interference screw;
placing tissue on the bone and adjacent to the interference screw;
pulling at least one of the suture ends through the tissue; and
tying the suture ends into a knot to attach the tissue to the bone.

Assignees

• Smith & Nephew Inc

Inventors

• Housman Mark Edwin
• Vincuilla Paul Steven
• Cashmore Peter James
• Blough Rebecca Ann
• Fan wei li

Classifications

• A61B2090/062

  penetration depth · CPC title

• A61B17/864

  hollow, e.g. with socket or cannulated · CPC title

• A61B17/869

  characterised by an open form, e.g. wire helix · CPC title

• A61B2017/0458

  Longitudinal through hole, e.g. suture blocked by a distal suture knot · CPC title

• A61F2002/0841

  Longitudinal channel for insertion tool running through the whole tendon anchor, e.g. for accommodating bone drill, guidewire · CPC title