Minimal profile anterior bracket for spinal fixation

• US 8,647,369 B2
• Filed: 05/19/2011
• Issued: 02/11/2014
• Est. Priority Date: 05/19/2010
• Status: Active Grant

• Current Assignee: Josef E. Gorek, Scott L. Jones
• Original Assignee: Josef E. Gorek, Scott L. Jones
• Inventors: Gorek, Josef E., Jones, Scott
• Primary Examiner(s): Woodall, Nicholas
• Assistant Examiner(s): Waggle, Jr., Larry E
• Application Number:
  US13/111,198
• Publication Number:
  US 20110288591A1
• Time in Patent Office: 999 Days
• Field of Search: 606 70- 71, 606280-281, 606/286, 606/291, 606297-298, 606/246, 623/17.16, 623/17.11
• US Class Current: 606/246
• CPC Class Codes: A61B 17/7059 Cortical plates A61B17/7007, A61B17/7058 take precedence

Abstract

A spinal fixation device for securing to a spine includes a body having one or more longitudinal members extending between a pair of wedge members. Each wedge member defines one or more openings therethrough for the reception of a bone screw. The wedge members are disposed on opposite ends of the one or more longitudinal members. One of the wedge members is positionable within a first intervertebral space and the other wedge member is positionable within a second intervertebral space. The one or more longitudinal members define a length that spans one or more vertebrae. The one or more longitudinal members are positionable within the one or more vertebrae when the wedge members are positioned within the respective first and second intervertebral spaces to maintain the body in a minimal profile orientation relative to the spine.

Claims

1. A spinal fixation device for securing to a spine, comprising:

a body including at least one longitudinal member extending between a pair of wedge members, each wedge member defining at least one opening therethrough for the reception of a bone screw, the pair of wedge members being disposed on opposite ends of the at least one longitudinal member, one of the wedge members being at least partially positionable within a first intervertebral space of the spine and the other wedge member being at least partially positionable within a second intervertebral space of the spine, the at least one longitudinal member defining a length that spans at least one vertebra of the spine, the pair of wedge members being secured to the at least one longitudinal member such that the at least one longitudinal member is at least partially positioned within the at least one vertebra when the pair of wedge members are positioned within the respective first and second intervertebral spaces to maintain the body in a minimal profile orientation relative to the spine.

2. The spinal fixation device of claim 1, wherein the at least one longitudinal member defines a length that spans a plurality of vertebra of the spine.

3. The spinal fixation device of claim 1, wherein at least one of the pair of wedge members defines at least two openings therethrough for the passage and reception of a bone screw in each opening.

4. The spinal fixation device of claim 1, wherein the at least one opening is disposed at an angle relative to an anterior surface of the body in order to facilitate the securement of the bone screw to another vertebra adjacent one of the first or second intervertebral spaces.

5. The spinal fixation device of claim 1, wherein at least one of the wedge members is at least partially wedge shaped.

6. The spinal fixation device of claim 1, wherein the body is dimensioned to resist deforming forces.

7. The spinal fixation device of claim 6, wherein the body is dimensioned to resist at least one of flexion extension forces and axial compression forces extending through the body.

8. The spinal fixation device of claim 1, wherein the pair of wedge members are secured to the at least one longitudinal member such that the at least one longitudinal member is positioned substantially even with an anterior surface of the at least one vertebra when the pair of wedge members are positioned within the respective first and second intervertebral spaces.

9. The spinal fixation device of claim 1, wherein the pair of wedge members are secured to the at least one longitudinal member such that the at least one longitudinal member is positioned even with an anterior surface of the at least one vertebra when the pair of wedge members are positioned within the respective first and second intervertebral spaces.

10. The spinal fixation device of claim 1, wherein the at least one longitudinal member is positionable within a recess defined within the at least one vertebra.

11. The spinal fixation device of claim 1, wherein the pair of wedge members are secured to the at least one longitudinal member such that the at least one longitudinal member is recessed below an anterior surface of the at least one vertebra when the pair of wedge members are positioned within the respective first and second intervertebral spaces.

12. A system for securing a spinal fixation device to a spine, comprising:

at least one bone screw;

a spinal fixation device, comprising;

a body including a pair of longitudinal members extending between a pair of wedge members, each wedge member defining at least one opening therethrough for the reception of the at least one bone screw, the pair of wedge members being disposed on opposite ends of the pair of longitudinal members, one of the wedge members is at least partially positionable within a first intervertebral space of the spine and the other wedge member is at least partially positionable within a second intervertebral space of the spine, the pair of longitudinal members define a length that spans at least one vertebra of the spine, the pair of wedge members being secured to the pair of longitudinal members such that the pair of longitudinal members is at least partially positioned within the at least one vertebra when the pair of wedge members are positioned within the respective first and second intervertebral spaces to maintain the body in a minimal profile orientation relative to the spine.

13. The system of claim 12, wherein the at least one bone screw is formed of a first material and at least a portion of the spinal fixation device is formed of a second material, the first and second materials being selected to enhance securement of the at least one bone screw to the spinal fixation device.

14. The system of claim 12, wherein the pair of longitudinal members are spaced apart from one another.

15. The system of claim 12, wherein opposite ends of the pair of longitudinal members are connected to opposite ends of the pair of wedge members.

16. The spinal fixation system of claim 12, wherein each wedge member extends to a substantially planar end face that extends from an anterior surface of the body to a posterior surface of the body, the end faces disposed on opposite ends of the body with each end face positioned at an angle oriented in a direction opposite to the other end face, a first one of the wedge members being at least partially positionable within the first intervertebral space so that the end face of the first one of the wedge members engages a first surface of a first vertebral body, the first surface at least partially defining the first intervertebral space, the other wedge member being at least partially positionable within the second intervertebral space so that the end face of the other wedge member engages a second surface of a second vertebral body, the second surface at least partially defining the second intervertebral space.