Acromioclavicular hook plate

Patent metadata

Field	Value
Publication number	US-11583317-B2
Application number	US-202016867678-A
Country	US
Kind code	B2
Filing date	May 6, 2020
Priority date	May 30, 2017
Publication date	Feb 21, 2023
Grant date	Feb 21, 2023

Abstract

A bone plate for treating acromioclavicular dislocations includes a shaft including a lateral portion sized and shaped to be positioned along a superior aspect of a lateral clavicle, the shaft including a plurality of openings extending therethrough for receiving bone fixation elements therein and a hook member extending from the shaft so that, in an operative position, the hook member is hooked under an acromion and the lateral portion of the shaft is positioned on the superior aspect of the lateral clavicle, the lateral portion of the shaft being substantially rounded so that the hook member is movable in one of an anterior direction and a posterior direction while the shaft maintains contact with the superior aspect of the lateral clavicle without any portion of the lateral portion of the shaft protruding beyond a surface of the lateral clavicle.

First claim

What is claimed is:

1. A system for treating acromioclavicular dislocations, comprising:
a bone plate including a shaft including a lateral portion sized and shaped to be positioned along a superior aspect of a lateral clavicle, the shaft including a plurality of openings extending therethrough from a bone facing surface thereof which, in a desired position, faces a portion of bone to which the bone plate is to be attached to an upper surface which, in the desired position, faces away from the bone, each of the openings being configured to receive a bone fixation element therein, the bone plate further including a hook member extending from the shaft so that, in the desired position, the hook member is hooked under an acromion and the lateral portion of the shaft is positioned on the superior aspect of the lateral clavicle, the lateral portion of the shaft being substantially rounded so that the hook member is movable in one of an anterior direction and a posterior direction while the shaft maintains contact with the superior aspect of the lateral clavicle without any portion of the lateral portion of the shaft protruding beyond a surface of the lateral clavicle; and
a reduction device including a base portion including a bone plate contacting surface which, in an operative position, contacts the upper surface of the shaft and a handle extending from the base portion, the reduction device being configured to be coupled to the shaft so that forces applied to the handle are imparted to the bone plate to reduce an acromioclavicular (AC) joint dislocation.

2. The system of claim 1 , wherein the handle is angled relative to the base portion of the reduction device to facilitate reduction of an AC joint dislocation.

3. The system of claim 1 , wherein the base portion includes a coupling mechanism for coupling the base portion to the shaft.

4. The system of claim 3 , wherein the coupling mechanism includes a screw hole which, in the operative position, aligns with an opening of the shaft so that a screw inserted therethrough will couple the base portion to the shaft in the desired position.

5. The system of claim 3 , wherein the shaft includes an undercut portion which, when the shaft is in the desired position, provides a space between the bone and the bone facing surface of the shaft.

6. The system of claim 5 , wherein the base portion of the reduction device includes a member that couples to the undercut portion of the shaft.

7. The system of claim 6 , wherein the coupling mechanism includes a screw hole which, in the operative position, aligns with an opening of the shaft so that a screw inserted therethrough will couple the base portion to the shaft in the desired position.

8. The system of claim 1 , wherein the hook member extends from the shaft at an angle relative to a longitudinal axis of the shaft.

9. The system of claim 8 , wherein the angle of the hook member relative to the longitudinal axis of the shaft ranges from between 15 and 30 degrees.

10. The system of claim 8 , wherein the angle of the hook member relative to the longitudinal axis of the shaft is 21 degrees.

11. The system of claim 1 , wherein the hook member includes a connecting portion and a longitudinal portion, the longitudinal portion being inclined in an inferior direction relative to a longitudinal axis of the clavicle on which the bone plate is to be mounted.

12. The system of claim 11 , wherein an inclination of the longitudinal portion relative to the bone-facing surface of the shaft ranges from between 10 and 20 degrees.

13. The system of claim 12 , wherein the inclination of the longitudinal portion relative to the bone-facing surface is 15 degrees.

14. The system of claim 1 , wherein the shaft is defined by first and second ends along with anterior and posterior sides extending therebetween, the hook member extending from the first end along the posterior side.

15. The system of claim 1 , wherein a maximum length of the lateral portion of the shaft is selected to be no larger than a width of the surface of the superior aspect of the clavicle.

16. The system of claim 1 , wherein each of the openings is configured as one of a variable angle hole and a locking hole.

17. The system of claim 1 , further comprising an elongated opening extending through a central portion of the lateral portion of the shaft.

18. The system of claim 1 , further comprising a plurality of suture holes extending through the lateral portion of the shaft for attaching soft tissue thereto.

19. The system of claim 18 , wherein the suture holes extend through an undercut portion of the shaft.

20. The system of claim 1 , wherein the shaft includes a medial portion extending ftom the lateral portion in a medial direction so that, in the operative position, the medial portion extends along a shaft portion of the clavicle, the medial portion including a plurality of openings extending therethrough for receiving the bone fixation elements therein.

21. The system of claim 20 , wherein the medial portion is connected to the lateral portion via a reduced width portion permitting bending adjustment of the bone plate between the lateral and medial portions.

22. A system for treating an acromioclavicular dislocation, comprising:
a bone plate including a shaft and a hook member extending therefrom so that, in an operative position, the hook member is hooked under an acromion and a lateral portion of the shaft is positioned on a superior aspect of a lateral clavicle, the lateral portion of the shaft being sized and shaped so that the hook member is movable in one of an anterior direction and a posterior direction while the lateral portion of the shaft maintains contact with the superior aspect of the lateral clavicle without any portion of the shaft protruding beyond a surface of the lateral clavicle; and
a reduction device including a base portion configured to be releasably coupled to the shaft of the bone plate and a handle member extending from the base portion at an angle.

23. The system of claim 22 , wherein the base portion is coupled to a surface of the shaft facing away from a bone in the operative position.

24. The system of claim 22 , wherein the base portion is coupled to an undercut portion of the shaft.

25. The system of claim 22 , wherein the base portion is coupled to a bone fixation element receiving opening of the shaft.

Assignees

• Depuy Synthes Products Inc

Inventors

• Zenker Martin
• Galm André
• Andermatt Daniel
• Bammerlin Martin
• Tordi Gianluca
• Jaeger Martin

Classifications

• A61B2017/564

  Methods for bone or joint treatment · CPC title

• A61B17/809

  with bone-penetrating elements, e.g. blades or prongs (bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233) · CPC title

• A61B17/808

  Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms · CPC title

• A61B17/8061 Primary

  specially adapted for particular bones (A61B17/70 and A61B17/74 take precedence) · CPC title

• A61B17/8057

  the interlocking form comprising a thread · CPC title