Fracture reduction using implant based solution

Patent metadata

Field	Value
Publication number	US-11065038-B2
Application number	US-202016984600-A
Country	US
Kind code	B2
Filing date	Aug 4, 2020
Priority date	Aug 8, 2019
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

Various angularly-adjustable spinal fixation systems are provided and generally include an articulating connector having first and second elongate rods extending therefrom, and first and second polyaxial bone screw assemblies configured to seat the first and second rods therein. The rods are configured to be seated within receiver heads of the polyaxial bone screw assemblies when the screws are implanted in opposed lateral sides of a vertebra, thereby allowing the receiver heads to be manipulated relative to the rods to reduce one or more posterior fractures. A joint on the articulating connector can also be manipulated to reduce one or more anterior fractures. The entire construct can be locked to maintain the fractures in the reduced configuration.

First claim

What is claimed is:

1. A method for reducing and stabilizing fractures in a vertebra, comprising:
positioning first and second rods within first and second receiver heads coupled to first and second bone screws implanted on opposed lateral sides of a vertebra;
manipulating the first and second receiver heads relative to the first and second rods and manipulating the first and second rods relative to an articulating joint coupling the first and second rods to thereby move at least one fracture formed in the vertebra into a reduced position; and
locking the first and second receiver heads to the first and second rods, and locking the articulating joint formed between the first and second rods to thereby prevent movement of the first and second receiver heads and the first and second rods, thereby maintaining the at least one fracture in the reduced position.

2. The method of claim 1 , wherein the at least one fracture comprises at least one posterior fracture in the vertebra and at least one anterior fracture in the vertebra, and manipulating the first and second receiver heads moves the at least one posterior fracture into a reduced position and manipulating the first and second rods moves the at least one anterior fracture into a reduced position.

3. The method of claim 2 , wherein the first and second receiver heads are manipulated prior to manipulating the first and second rods.

4. The method of claim 1 , wherein manipulating the first and second receiver heads relative to the first and second rods comprises slidably moving the first and second receiver heads along the first and second rods.

5. The method of claim 1 , wherein manipulating the first and second rods relative to an articulating joint comprises pivoting the first and second rods about the articulating joint to adjust an angle between the first and second rods.

6. The method of claim 1 , wherein the first and second receiver heads are polyaxially coupled to the first and second bone screws such that the first and second receiver heads pivot relative to the first and second bone screws during at least one of positioning the first and second rods within the first and second receiver heads and manipulating the first and second receiver heads.

7. The method of claim 1 , wherein the first and second receiver heads are locked to the first and second rods prior to locking the articulating joint.

8. The method of claim 1 , further comprising coupling each of the first and second rods to at least one additional receiver head of at least one additional bone screw implanted in at least one additional vertebra.

9. The method of claim 8 , wherein each of the first and second rods includes a proximal portion that is seated within the first and second receiver heads, respectively, and a distal portion that extends at an angle relative to the proximal portion and that is seated in the at least one additional receiver head, and wherein the proximal portion of each of the first and second rods extends in a medial-lateral direction relative to the vertebra, and the distal portion of each of the first and second rods extends in a craneal-caudal direction relative to the vertebra.

10. A method for reducing and stabilizing fractures in a vertebra, comprising:
manipulating first and second receiver heads polyaxially coupled to first and second bone screws implanted in opposed first and second posterior-lateral sides of a vertebra to slide the first and second receiver heads along first and second rods seated within the receiver heads, thereby moving at least one posterior fracture in the vertebra into a reduced position;
locking the first and second receiver heads relative to the first and second rods to maintain the at least one posterior fracture in the reduced position;
manipulating the first and second rods to cause the first and second rods to pivot about a pivot joint coupling the first and second rods to thereby move at least one anterior fracture in the vertebra into a reduced position; and
locking the pivot joint to maintain the at least one anterior fracture in the reduced position.

11. The method of claim 10 , wherein the at least one posterior fracture comprises a first posterior-lateral fracture on a first posterior side of the vertebra and a second posterior-lateral fracture on a second posterior side of the vertebra, and the at least one anterior fracture comprises a first anterior-lateral fracture on a first anterior side of the vertebra and a second anterior-lateral fracture on a second anterior side of the vertebra.

12. The method of claim 10 , wherein the articulating joint is positioned adjacent the spinous process between the first and second posterior-lateral sides of the vertebra.

13. The method of claim 10 , wherein the articulating joint articulates in a posterior-anterior direction.

14. The method of claim 10 , wherein the first and second receiver heads are manipulated and locked prior to manipulating the first and second rods.

15. The method of claim 10 , wherein the first and second receiver heads pivot relative to the first and second bone screws when manipulating the first and second receiver heads.

16. The method of claim 10 , further comprising coupling each of the first and second rods to at least one additional receiver head of at least one additional bone screw implanted in at least one additional vertebra.

17. The method of claim 16 , wherein each of the first and second rods includes a proximal portion that is seated within the first and second receiver heads, respectively, and a distal portion that extends at an angle relative to the proximal portion and that is seated in the at least one additional receiver head, and wherein the proximal portion of each of the first and second rods extends in a medial-lateral direction relative to the vertebra, and the distal portion of each of the first and second rods extends in a craneal-caudal direction relative to the vertebra.

Assignees

• Medos Int Sarl

Inventors

• Spratt Frank
• Lee Kevin
• Montello Albert

Classifications

• A61B17/7011

  Longitudinal element being non-straight, e.g. curved, angled or branched (adjustable length longitudinal elements A61B17/7014; A61B17/7019 takes precedence, e.g. coil springs) · CPC title

• A61B17/7013 Primary

  the shape of the element being adjustable before use (adjustable length plates A61B17/7014) · CPC title

• A61B17/705

  for linking adjacent ends of longitudinal elements · CPC title

• A61B17/7023

  with a pivot joint · CPC title

• A61B17/7076

  for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation · CPC title