Spinal implant system and method

Patent metadata

Field	Value
Publication number	US-11497534-B2
Application number	US-201916545475-A
Country	US
Kind code	B2
Filing date	Aug 20, 2019
Priority date	Aug 9, 2016
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A spinal construct comprises a fastener including a first portion defining an implant cavity and a second portion configured to penetrate tissue. A member defines a cavity configured for disposal of at least a portion of the first portion. The member includes an implant engaging surface fixable within the implant cavity and connected to a connecting element fixable adjacent the first portion. Systems and methods of use are disclosed.

First claim

What is claimed is:

1. A spinal construct comprising opposite first and second ends, the first end comprising a first stirrup, the second end comprising a second stirrup, the stirrups each defining a cavity configured for disposal of an arm of a bone fastener, the stirrups each including a bridge, the bridge including a recess defined by arcuate side surfaces that face one another and an upper surface, the stirrups each including an implant engaging surface opposite the upper surface,
wherein the cavities are each defined by a planar surface and a curved surface that faces the planar surface such that the cavities each have a hemispherical configuration.

2. The spinal construct recited in claim 1 , wherein the cavities each extend along a longitudinal axis through opposite top and bottom surfaces of a respective one of the stirrups, the upper surfaces being positioned between the top and bottom surfaces of a respective one of the stirrups.

3. The spinal construct recited in claim 1 , wherein the cavities each extend along a longitudinal axis through opposite top and bottom surfaces of a respective one of the stirrups, the upper surfaces each extending perpendicular to the longitudinal axes.

4. The spinal construct recited in claim 1 , wherein the cavities each extend along a longitudinal axis through opposite top and bottom surfaces of a respective one of the stirrups, the upper surfaces each being planar, the implant engaging surfaces each being concave.

5. The spinal construct recited in claim 1 , wherein the spinal construct has a maximum length defined by a distance from an end surface of the first stirrup to an end surface of the second stirrup, the end surfaces being planar and facing away from one another.

6. The spinal construct recited in claim 1 , wherein the planar surfaces face one another and the curved surfaces face away from one another.

7. The spinal construct recited in claim 1 , wherein the bridge of the first stirrup has a width defined by a distance between the planar surface of the first stirrup and an opposite second planar surface.

8. The spinal construct recited in claim 7 , wherein the implant engaging surface of the first stirrup is concavely curved between the planar surface of the first stirrup and the second planar surface.

9. The spinal construct recited in claim 1 , wherein the first end is monolithically formed with the second end such that the first end is fixed relative to the second end.

10. The spinal construct recited in claim 1 , wherein the first end is moveable relative the second end to increase and decrease a distance between the first end and the second end.

11. A spinal construct comprising:
a first bone fastener comprising spaced apart first and second arms defining a first implant cavity therebetween;
a second bone fastener comprising spaced apart first and second arms defining a second implant cavity therebetween;
a first rod positioned in the first implant cavity;
a second rod positioned in the second implant cavity;
a connecting element comprising opposite first and second ends, the first end comprising a first stirrup, the second end comprising a second stirrup, the first stirrup defining a first cavity having the first arm of the first bone fastener positioned therein, the second stirrup defining a second cavity having the first arm of the second bone fastener positioned therein, the stirrups each including a bridge, the bridge including a recess defined by arcuate side surfaces that face one another and an upper surface, the stirrups each including an implant engaging surface opposite the upper surface, the implant engaging surface of the first stirrup directly engaging the first rod, the implant engaging surface of the second stirrup directly engaging the second rod,
wherein the bridge of the first stirrup is positioned between the arms of the first bone fastener and the bridge of the second stirrup is positioned between the arms of the second bone fastener.

12. The spinal construct recited in claim 11 , further comprising:
a first setscrew positioned between the arms of the first bone fastener such that threads of the first setscrew mate with threads of the arms of the first bone fastener and a lower surface of the first setscrew directly engages the upper surface of the first stirrup; and
a second setscrew positioned between the arms of the second bone fastener such that threads of the second setscrew mate with threads of the arms of the second bone fastener and a lower surface of the second setscrew directly engages the upper surface of the second stirrup.

13. The spinal construct recited in claim 11 , wherein the cavities are each defined by an inner surface of the spinal construct, the inner surface of the first cavity matingly engaging the first arm of the first bone fastener, the inner surface of the second cavity matingly engaging the second arm of the first bone fastener.

14. The spinal construct recited in claim 11 , wherein the cavities are each defined by a planar surface and a curved surface that faces the planar surface such that the cavities each have a hemispherical configuration.

15. The spinal construct recited in claim 11 , wherein the bridge of the first stirrup includes a planar end surface that engages a planar surface of the second arm of the first bone fastener and the bridge of the second stirrup includes a planar end surface that engages a planar surface of the second arm of the second bone fastener.

16. The spinal construct recited in claim 11 , wherein the connecting element comprises a shaft extending continuously from the first stirrup to the second stirrup.

17. The spinal construct recited in claim 11 , wherein the implant engaging surface of the first stirrup is concave and directly engages the first rod, the implant engaging surface of the second stirrup is concave and directly engages the second rod.

18. A spinal construct comprising:
a first bone fastener comprising spaced apart first and second arms defining a first implant cavity therebetween;
a second bone fastener comprising spaced apart first and second arms defining a second implant cavity therebetween;
a first rod positioned in the first implant cavity;
a second rod positioned in the second implant cavity;
a connecting element comprising opposite first and second ends, the first end comprising a first stirrup, the second end comprising a second stirrup, the first stirrup defining a first cavity having the first arm of the first bone fastener positioned therein, the second stirrup defining a second cavity having the first arm of the second bone fastener positioned therein, the cavities each being defined by a planar surface and a curved surface that faces the planar surface such that the cavities each have a hemispherical configuration, the stirrups each including a bridge, the bridge including a recess defined by arcuate side surfaces that face one another and an upper surface, the stirrups each including a concave implant engaging surface opposite the upper surface, the implant engaging surface of the first stirrup directly engaging the first rod, the implant engaging surface of the second stirrup directly engaging the second rod.

19. The spinal construct recited in claim 1 , wherein the bone fasteners each include one of the arms and an additional arm, the bridge of the first stirrup being positioned between the arms of one of the bone fasteners and the bridge of the second stirrup being positioned between the arms of another one of the bone fasteners.

20. The spinal co

Assignees

• Warsaw Orthopedic Inc

Inventors

• Cowan Benjamin David
• Farris Robert A

Classifications

• A61B17/7043 Primary

  with a longitudinal element fixed to one or more transverse elements which connect multiple screws or hooks · CPC title

• A61B17/7052

  of variable angle or length · CPC title

• A61B17/7037

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