Spinal implant system and method

Patent metadata

Field	Value
Publication number	US-9872711-B2
Application number	US-201414520054-A
Country	US
Kind code	B2
Filing date	Oct 21, 2014
Priority date	Oct 21, 2014
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A spinal implant for use with a surgical treatment comprises a plate including a surface that defines a first cavity and a second cavity. The first cavity is oriented to implant a multi-axial fastener with a sacrum. The second cavity is oriented to implant a fastener with an ala of a sacrum. Systems and methods of use are disclosed.

First claim

What is claimed is:

1. A spinal implant comprising:
a multi-axial fastener comprising a threaded shaft and a head that is rotatable relative to the threaded shaft, the head comprising spaced apart arms that define a U-shaped implant cavity therebetween;
a fastener; and
a plate including a first cavity oriented to implant the multi-axial fastener with a sacrum and a second cavity oriented to implant the fastener with an ala of the sacrum, the multi-axial fastener being positioned within the first cavity such that the threaded shaft directly engages an inner surface of the plate that defines the first cavity, the first cavity defining a first axis and the second cavity defining a second axis that is disposed at a transverse angle relative to the first axis.

2. A spinal implant as recited in claim 1 , wherein each of the cavities are configured for alignment with a pathway that communicates with a posterior mid-line surgical approach.

3. A spinal implant as recited in claim 1 , wherein the first cavity is oriented to implant the multi-axial fastener with an S1 vertebra of the sacrum.

4. A spinal implant as recited in claim 1 , wherein the plate comprises a first wall including the first cavity and a second wall including the second cavity, the first wall being disposed at an angle relative to the second wall.

5. A spinal implant as recited in claim 4 , wherein the first wall includes an outer surface engageable with tissue of an S1 vertebra of the sacrum and the second wall includes an outer surface engageable with tissue of the ala.

6. A spinal implant as recited in claim 1 , further comprising an insert disposable in at least one of the cavities.

7. A spinal implant as recited in claim 6 , wherein the insert comprises one of a plurality of inserts having alternately sized openings.

8. A spinal implant as recited in claim 1 , further comprising an awl configured for disposal with the first cavity to provisionally fix placement of the plate.

9. A spinal implant as recited in claim 1 , wherein the plate comprises visual indicia configured to provide configuration and/or dimension of the plate.

10. A spinal implant as recited in claim 1 , wherein the plate includes a first wall thickness that includes the first cavity and a second wall thickness that includes the second cavity, the second wall thickness being greater than the first wall thickness.

11. A spinal implant as recited in claim 1 , wherein the plate defines a longitudinal axis, the first cavity being aligned with the longitudinal axis and the second cavity being offset from the longitudinal axis.

12. A spinal implant as recited in claim 1 , wherein the plate extends along a horizontal axis between a first end that includes the first cavity and an opposite second end that includes the second cavity, the second axis being disposed at a first angle relative to the horizontal axis in a lateral direction and at a second angle relative to the horizontal axis in a cephalad-caudal direction.

13. A spinal implant as recited in claim 12 , wherein the first angle is approximately 20 degrees.

14. A spinal implant as recited in claim 12 , wherein the second angle is approximately 45 degrees.

15. A spinal implant as recited in claim 1 , wherein the plate extends along a horizontal axis between a first end that includes the first cavity and an opposite second end that includes the second cavity, the second axis being disposed at a single angle relative to the horizontal axis.

16. A spinal implant comprising:
a multi-axial fastener having a head and a shaft, the head comprising spaced apart arms that define a U-shaped implant cavity therebetween;
a fastener; and
a plate including a first cavity oriented to implant the multi-axial fastener with a sacrum and a second cavity oriented to implant the fastener with an ala of the sacrum, the head having a maximum diameter that is greater than that of the first cavity, the multi-axial fastener being positioned within the first cavity such that threads on the shaft directly engage an inner surface of the plate that defines the first cavity.

17. A spinal implant comprising:
a plate extending along a horizontal axis between a first end that includes a first cavity and an opposite second end that includes a second cavity, the first cavity defining a first axis and the second cavity defining a second axis that is disposed at an acute angle relative to the first axis, the first axis extending perpendicular to the horizontal axis and the second axis extending at an acute angle relative to the horizontal axis;
a first screw comprising a threaded shaft and a head connected to the shaft such that the head is rotatable relative to the shaft, the head comprising spaced apart arms that define an implant cavity therebetween, the shaft being positioned within the first cavity such that threads of the shaft directly engage an inner surface of the plate that defines the first cavity and the head is spaced apart from the plate; and
a second screw comprising a threaded shaft and a head connected to the shaft of the second screw, the shaft of the second screw being positioned within the second opening such that the head of the second screw engages the plate.

18. A spinal implant as recited in claim 17 , wherein the head of the first screw has a maximum diameter that is greater than that of the first cavity.

Assignees

• Warsaw Orthopedic Inc
• Warsaw Orthopedic Inc

Inventors

• Hynes Richard A
• Rezach Alan
• Ballard Rodney R

Classifications

• A61B17/7032

  Screws or hooks with U-shaped head or back through which longitudinal rods pass · CPC title

• A61B17/7055

  connected to sacrum, pelvis or skull · CPC title

• A61B2017/564

  Methods for bone or joint treatment · CPC title

• A61B17/7059

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

• A61B17/7037

  wherein pivoting is blocked when the rod is clamped · CPC title