Connection assembly

Patent metadata

Field	Value
Publication number	US-8940032-B2
Application number	US-201113281842-A
Country	US
Kind code	B2
Filing date	Oct 26, 2011
Priority date	Oct 26, 2011
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

An orthopedic connection assembly is described that comprises a housing member for receiving an implant that is operably connected to a receiving member for receiving an anchor member. The connection assembly is configured to have a locking mechanism that secures and fixes the relative orientation between the implant and the anchor member. The connection assembly can comprise a plate member receivable within the housing member. When a securing member such as a set screw is introduced downwardly into the housing member to secure the implant, the securing member applies a lateral force to the plate member, which presses against an interference member within the receiving member. The interference member presses against the anchor member, such that the anchor member is fixed in a position relative to the implant.

First claim

What is claimed is:

1. An orthopedic connection assembly comprising:
a housing member including a first aperture for receiving a securing member and a second aperture for receiving a rod implant;
a plate member insertable into the housing member through a third aperture;
an interference member capable of engagement by the plate member;
a receiving member for receiving the interference member therein, the receiving member including a receiving aperture for receiving an anchor member therethrough; and
a cap member receivable over the receiving member, the cap member having an extension portion that is mateable with the housing member,
wherein the orientations of the rod implant and the anchor member are fixed relative to each other by downwardly inserting the securing member into the housing member.

2. The assembly of claim 1 , wherein the securing member comprises a set screw.

3. The assembly of claim 2 , wherein the set screw includes a plurality of threads.

4. The assembly of claim 1 , wherein the plate member includes a plurality of teeth.

5. The assembly of claim 4 , wherein the receiving member includes a plurality of teeth that mesh with the teeth of the plate member.

6. The assembly of claim 1 , wherein the extension portion of the cap member includes one or more grooves.

7. The assembly of claim 1 , wherein the interference member includes one or more flat surfaces along its body.

8. The assembly of claim 1 , wherein the downward insertion of the securing member into the housing member causes a lateral force to be applied to the plate member.

9. The assembly of claim 1 , wherein the interference member comprises a body affixed to a tapering rim member.

10. The assembly of claim 9 , wherein the body includes one or more flattened surfaces.

11. The assembly of claim 9 , wherein tapering rim includes one or more slits that extend around the rim.

12. The assembly of claim 1 , wherein the receiving member comprises a radially outward extending rim portion.

13. The assembly of claim 12 , wherein a plurality of surface features are positioned adjacent the radially outward extending rim portion of the receiving member.

14. An orthopedic connection assembly comprising:
a rod implant;
an anchor implant;
a housing member configured and dimensioned to receive the rod implant;
a securing member receivable in the housing member:
a plate member receivable within the housing member;
an interference member in contact with the plate member; and
a receiving member configured and dimensioned to receive the anchor member, wherein the receiving member is capable of operable connection with the housing member and
wherein the interference member is received at least partially within the receiving member and
wherein downward insertion of the securing member into contact with the rod implant moves the rod implant into contact with the plate member securing the orientation of the rod implant relative to the anchor member.

15. The assembly of claim 14 , wherein the housing member includes an aperture for receiving a securing member.

16. The assembly of claim 15 , wherein the plate member comprises surface features that encompass a smooth surface.

17. The assembly of claim 15 , wherein the interference member comprises one or more slits that separate tab members.

18. The assembly of claim 17 , wherein the slits are evenly distributed around the interference member.

19. The assembly of claim 15 , wherein the interference member includes one or more flat surfaces.

20. The assembly of 19 , wherein the inner lumen of the receiving member includes one or more flat surfaces that correspond to the flat surfaces of the interference member.

Assignees

• Harper Michael
• Globus Medical Inc

Inventors

• Harper Michael

Classifications

• A61B17/7002

  Longitudinal elements, e.g. rods · CPC title

• A61B17/7041 Primary

  with single longitudinal rod offset laterally from single row of screws or hooks (A61B17/7044 takes precedence) · CPC title

• A61B17/70

  Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant · CPC title

• A61B17/7038

  to a different extent in different directions, e.g. within one plane only · CPC title

• A61B17/68

  Internal fixation devices {, including fasteners and spinal fixators, even if a part thereof projects from the skin (bone staples A61B17/0642)} · CPC title