Apparatus and method for fixation of ankle syndesmosis

• US 20030236555A1
• Filed: 08/30/2002
• Published: 12/25/2003
• Est. Priority Date: 06/20/2002
• Status: Active Grant

• Current Assignee: Brian Thornes
• Original Assignee: Brian Thornes
• Inventors: Thornes, Brian
• Granted Patent: US 7,235,091 B2
• Time in Patent Office: Days
• US Class Current: 606/232
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/842 Flexible wires, bands or straps A61B17/72, A61B17/82, A61B17/86 take precedence
• CPC Class Codes: A61B 2017/0404 Buttons
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot

Abstract

The present invention relates to an apparatus and method for the fixation of ankle syndesmosis tibio-fibular diastasis, the apparatus comprising a pair of buttons secured together by means of a first suture, a second suture being secured to one of the pair of buttons, and to a needle, such that the needle and associated button, the first button, may be advanced through a hole drilled through the fibula and tibia, adjacent the ankle, wherein the first button and second button may then be tightened against either side of the ankle sydesmosis, by means of the first suture connected therebetween, to prevent diastasis of the ankle syndesmosis.

Claims

1. An apparatus for use in the fixation of ankle syndesmosis tibio-fibular diastasis, the apparatus comprising a kit of parts comprising first and second buttons;

a flexible coupling mountable, in use, between the first and second buttons; and

a needle securable to the first button.

2. An apparatus according to claim 1, in which each of the first and second buttons have at least first and second apertures, and the flexible coupling is a first suture which is fed, in use, through the second aperture of the second button and through, in turn, the second and first apertures of the first button and through the first aperture of the second button.

3. An apparatus according to claim 2, in which the needle is secured to the first button by means of a second suture looped through one of the first or second apertures of the first button and operatively associated with the needle.

4. An apparatus according to claim 2, in which the first suture is double looped through the first and second buttons.

5. A method for fixation of ankle syndesmosis tibio-fibular diastasis, the method comprising the steps of providing an apparatus according to any of claims 1 to 4;

drilling a hole through the tibia and fibula;

passing the needle through the hole, so as to advance the first button longitudinally through the hole;

pivoting the first button so as to engage the first button against the medial tibia; and

tightening the second button against the lateral fibula by hand traction of the flexible coupling.

6. A method according to claim 5, in which the needle is uncoupled from the first button, once the first button has been advanced through the hole.

7. A button for use in the apparatus according to claims 1, 2, 3 or 4 and for use in the method according to claim 5 or 6, in which the button comprises an oblong body defining first and second apertures, each of the apertures being tapered and terminating in a respective apex, the respective apices being directed away from each other and being located substantially about a longitudinal mid-line of the oblong body.

8. A button according to claim 7 in which each aperture is substantially triangular in plan view.

9. A button according to claim 8, in which each of the apertures comprises first, second and third walls and the first walls of the respective first and second apertures are substantially parallel.

10. A button according to claim 9, in which the second and third walls of each aperture are of substantially the same length, while being longer than the first wall.

11. A button according to claim 7, in which the button has a width in the range of 2.5 mm to 4.0 mm.

12. A button according to claim 7, in which the button has a width in the range of 3.25 mm to 4.0 mm.

13. A button according to claim 7, in which the button has a length in the range of 7.5 mm to 12.5 mm.

14. A button according to claim 7, in which the button has a length in the range of 8 mm to 10 mm.