Surgical implant system and method

Patent metadata

Field	Value
Publication number	US-9277943-B2
Application number	US-201314031977-A
Country	US
Kind code	B2
Filing date	Sep 19, 2013
Priority date	Sep 19, 2013
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

A spinal implant comprises a wall extending between a first end and a second end and defining a longitudinal axis. The wall has a first surface and a second surface configured to engage tissue. The wall defines at least one opening configured for disposal of a bone fastener. The first end includes an inner surface comprising a first linear side and a second linear side. The linear sides are disposed in substantial alignment with the axis. The inner surface further comprises an arcuate side connected to the linear sides to define a cavity configured for disposal of a fastener. Systems and methods are disclosed.

First claim

What is claimed is:

1. A spinal implant comprising:
a fastener;
a wall extending between a first end and a second end and defining a longitudinal axis, the wall having a first surface and a second surface configured to engage tissue,
the wall defining at least one opening configured for disposal of a bone fastener,
the first end includes an inner surface comprising a first linear side and a second linear side, the linear sides being disposed in substantial alignment with the axis, the inner surface further comprising an arcuate side connected to the linear sides to define a cavity configured for disposal of the fastener, each of the linear sides including a flange, the fastener comprising a threaded shaft that engages the flanges and the arcuate side to capture the fastener; and
a retaining element configured to resist and/or prevent inadvertent back out of the bone fastener from the at least one opening.

2. A spinal implant as recited in claim 1 , wherein the cavity is configured for receiving the fastener in a lateral orientation and an axial orientation, relative to the axis.

3. A spinal implant as recited in claim 1 , wherein the cavity is configured for passage of the fastener into and out of the cavity in an axial orientation, relative to the axis.

4. A spinal implant as recited in claim 1 , wherein the first linear side defines a planar face oriented in a first direction and the second linear side defines a planar face oriented in a second opposing direction.

5. A spinal implant as recited in claim 1 , wherein the first end includes an edge surface and the linear sides define an opening of the edge surface.

6. A spinal implant as recited in claim 5 , wherein the opening of the edge surface is centrally disposed along the edge surface.

7. A spinal implant as recited in claim 5 , the opening of the edge surface facilitates passage of the fastener into and out of the cavity in an axial orientation, relative to the axis.

8. A spinal implant as recited in claim 1 , wherein the wall comprises a cervical plate.

9. A spinal implant as recited in claim 1 , wherein the cavity includes an omega-shaped cross section.

10. A spinal implant as recited in claim 1 , wherein the cavity extends completely through the first surface and the second surface.

11. A spinal implant as recited in claim 1 , wherein the retaining element is rotatable between a locking orientation to resist and/or prevent inadvertent back out of the bone fastener from the at least one opening and a non-locking orientation such that the bone fastener is translatable transverse to the axis through the at least one opening.

12. A spinal implant as recited in claim 1 , further comprising a second fastener extending through an aperture in the retaining element, the second fastener comprising a threaded shaft configured to penetrate bone.

13. A spinal implant as recited in claim 1 , further comprising a second fastener having a threaded shaft, wherein the retaining element includes an inner surface that defines a centrally disposed aperture and holes at opposite ends that are in communication with the aperture, the second fastener being positioned within the aperture such that the threaded shaft extends through the holes.

14. A spinal implant as recited in claim 1 , wherein the at least one opening comprises a pair of openings, central portions of the openings each being intersected a lateral axis that extends perpendicular to the longitudinal axis, the cavity being spaced apart from the lateral axis.

15. A spinal implant as recited in claim 1 , wherein the second end includes an inner surface comprising a first linear side and a second linear side, the linear sides of the second end being disposed in substantial alignment with the axis, the inner surface of the second end further comprising an arcuate side connected to the linear sides of the second end to define a cavity, each of the linear sides of the second end including a flange, the flanges of the second end being configured to capture a second fastener within the cavity of the second end.

16. A spinal implant comprising:
a provisional fastener;
a plate extending between a first end and a second end, the plate having a first surface configured for orientation in an anterior direction and a second surface configured for orientation in a posterior direction to engage an anterior portion of vertebrae, the plate defining a plurality of openings, each opening being configured for disposal of a bone fastener,
the first end including an inner surface comprising a first linear side and a second linear side, the linear sides being disposed in substantial alignment with the axis, the inner surface further comprising an arcuate side connected to the linear sides to define a cavity configured for disposal of the provisional fastener, each of the linear sides including a flange, the provisional fastener comprising a threaded shaft that engages the flanges and the arcuate side to capture the provisional fastener, the first end further including an edge surface having an opening that communicates with the cavity to facilitate passage of a provisional fastener into and out of the cavity in an axial orientation, relative to the axis,
the second end including an inner surface comprising a first linear side and a second linear side, the linear sides of the second end being disposed in substantial alignment with the axis, the inner surface of the second end further comprising an arcuate side connected to the linear sides of the second end to define a cavity configured for disposal of a provisional fastener, the second end further including an edge surface having an opening that communicates with the cavity of the second end to facilitate passage of a provisional fastener into and out of the cavity of the second end in an axial orientation, relative to the axis; and
a retaining element configured to resist and/or prevent inadvertent back out of two of the bone fasteners from two of the plurality of openings.

17. A surgical implant system comprising:
a provisional fastener;
a wall extending between a first end and a second end and defining a longitudinal axis, the wall having a first surface and a second surface configured to engage tissue, the first end includes an inner surface comprising a first linear side and a second linear side, the linear sides being disposed in substantial alignment with the axis, the inner surface further comprising an arcuate side connected to the linear sides to define a cavity, each of the linear sides including a flange, the provisional fastener comprising a threaded shaft that engages the flanges and the arcuate side to capture the provisional fastener, the wall further defining a plurality of openings;
a plurality of bone fasteners, each bone fastener being configured for disposal with an opening of the plurality of openings; and
a retaining element configured to resist and/or prevent inadvertent back out of at least one of the bone fasteners from at least one opening of the plurality of openings, wherein the cavity is configured for passage of the provisional fastener into and out of the cavity in an axial orientation, relative to the axis.

18. A spinal implant as recited in claim 17 , wherein the cavity includes an omega-shaped cross section.

19. A spinal implant as recited in claim 17 , wherein the first end includes an edge surface and the linear sides define an opening of the edge surface such that the opening of the edge surface facilitates passage of the provisional fastener into and out of the cavity in a

Assignees

• Warsaw Orthopedic Inc

Inventors

• Holly Langston
• Dace Mark
• Humphreys Kevin R

Classifications

• A61B17/8042

  the additional component being a cover over the screw head · CPC title

• A61B17/7059 Primary

  Cortical plates (A61B17/7007, A61B17/7058 take precedence) · CPC title