Vertebral rod connector and methods of use

• US 9,050,138 B2
• Filed: 01/28/2010
• Issued: 06/09/2015
• Est. Priority Date: 01/28/2010
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Gil, Carlos E., May, Jason Michael, Zolotov, Aleksandr G., Simpson, Joshua W.
• Primary Examiner(s): HOFFMAN, MARY C
• Application Number:
  US12/695,563
• Publication Number:
  US 20110184462A1
• Time in Patent Office: 1,958 Days
• Field of Search: 606264-278
• US Class Current: 1/1
• CPC Class Codes: A61B 17/7001 Screws or hooks combined with longitudinal elements which do not contact vertebrae A61B17/7058 takes precedence
• CPC Class Codes: A61B 17/7032 Screws or hooks with U-shaped head or back through which longitudinal rods pass

Abstract

A vertebral rod connector includes a first portion configured to engage a fastener construct and define a first longitudinal axis. A second portion is configured to engage a vertebral rod and define a second longitudinal axis disposed transverse to the first longitudinal axis. A flexible linking portion is disposed for connecting the first portion with the second portion. The linking portion has a bifurcated configuration oriented transverse to the first longitudinal axis. Methods of use are disclosed.

Claims

1. A vertebral rod connector comprising:

a first portion configured to engage a fastener construct and define a first longitudinal axis;

the fastener construct configured to secure the first portion to a vertebra

a second portion including continuous top and bottom surfaces extending between opposite side surfaces that are each continuous with the top and bottom surfaces, the second portion comprising an uninterrupted inner surface that defines an enclosed opening positioned between the top and bottom surfaces and configured for disposal of a vertebral rod, the opening extending along a second longitudinal axis disposed transverse to the first longitudinal axis, wherein the opening is configured to receive a vertebral rod such that the inner surface prevents the rod from moving along the first longitudinal axis in opposite first and second directions while allowing the rod to be movable along the second longitudinal axis; and

a flexible linking portion disposed for connecting the first portion with the second portion, the linking portion having a bifurcated configuration oriented transverse to the first longitudinal axis.

2. A vertebral rod connector according to claim 1, wherein the first portion includes an elongated collar comprising an uninterrupted inner surface that defines an enclosed opening having a circular cross section configured to receive the fastener construct.

3. A vertebral rod connector according to claim 1, further comprising the fastener construct, wherein the fastener construct includes a pedicle screw assembly and the first portion includes an enclosed opening that extends through opposite to and bottom surfaces of the first portion that extend parallel to the second longitudinal axis, the pedicle screw assembly being disposed in the enclosed opening in the first portion.

4. A vertebral rod connector according to claim 1, wherein the first portion includes a tubular insert configured for disposal within the cavity, the insert being configured to receive the fastener construct, the insert comprising an unthreaded distal portion and a threaded proximal portion extending from a proximal end of the distal portion, the proximal portion having a uniform first diameter, the distal portion having a maximum diameter that is greater than the first diameter, the proximal portion comprising a wall that includes a plurality of equidistantly spaced apart openings configured to provide flexibility to the wall.

5. A vertebral rod connector according to claim 1, wherein the bifurcated configuration includes a first member integrally formed with the first portion and a second member integrally formed with the second portion.

6. A vertebral rod connector according to claim 5, wherein the first member and the second member are disposed in substantially parallel alignment, the first member being disposed in a first plane and the second member being disposed in a second plane, the first and second planes each extending parallel to the second longitudinal axis, the first plane being offset relative to the second plane along the first longitudinal axis.

7. A vertebral rod connector according to claim 5, wherein the first member includes an opening extending parallel to the first longitudinal axis.

8. A vertebral rod connector according to claim 7, wherein the second member includes an opening that is coaxial with the opening in the first member.

9. A vertebral rod connector according to claim 5, wherein the first member is connected with the second via an arcuate web such that the first portion is permanently connected to the second portion and the second member is rotatable relative to the first member in a range of −

30 degrees to 30 degrees.

10. A vertebral rod bracket comprising:

an elongated collar defining a cavity configured to receive a fastener construct and defining a longitudinal axis;

the fastener construct configured to secure the first portion to a vertebra

a flexible bifurcated extension disposed in a transverse orientation relative to the longitudinal axis and including a first member extending from the elongated collar and a second member; and

a flange extending from the second member comprising continuous top and bottom surfaces extending between opposite side surfaces that are continuous with the top and bottom surfaces, the flange comprising an uninterrupted inner surface defining one enclosed opening positioned between the top and bottom surfaces and orientated transverse to the longitudinal axis, the opening being configured to receive a vertebral rod such that the inner surface of the flange prevents the rod from moving along the longitudinal axis in opposite first and second directions while allowing the rod to slide along an axis that extends transverse to the longitudinal axis.

11. A vertebral rod bracket according to claim 10, further comprising the fastener construct, wherein the fastener construct includes a pedicle screw assembly and the cavity defines an enclosed opening that extends through opposite to and bottom surfaces of the collar that extend transverse to the longitudinal axis, the pedicle screw assembly being disposed in the enclosed opening in the collar.

12. A vertebral rod bracket according to claim 10, wherein the collar includes a tubular insert configured for disposal within the cavity, the insert being configured to receive the fastener construct, the insert comprising an unthreaded distal portion and a threaded proximal portion extending from a proximal end of the distal portion, the proximal portion having a uniform first diameter, the distal portion having a maximum diameter that is greater than the first diameter, the proximal portion comprising a wall that includes a plurality of equidistantly spaced apart openings configured to provide flexibility to the wall.

13. A vertebral rod bracket according to claim 10, wherein the first member is disposed in a first plane and the second member is disposed in a second plane, the first and second planes each extending parallel to the opening in the flange, the first plane being offset relative to the second plane along the longitudinal axis.

14. A vertebral rod bracket according to claim 10, wherein the first member includes an elongated opening that is spaced apart from the cavity and extends parallel to the longitudinal axis.

15. A vertebral rod bracket according to claim 14, wherein the second member includes an elongated opening that extends parallel to the longitudinal axis and is coaxial with the elongated opening in the first member.

16. A vertebral rod bracket according to claim 10, wherein the first member is integrally formed with the collar, the second member is integrally formed with the flange and the first member is connected with the second member via an arcuate web.