Helical graft containment cage

Patent metadata

Field	Value
Publication number	US-11478356-B2
Application number	US-201715411499-A
Country	US
Kind code	B2
Filing date	Jan 20, 2017
Priority date	Jan 28, 2016
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A bone graft containment device includes a body formed via one or more helical structures extending about a longitudinal axis of the body from a first end to a second end to define a channel extending longitudinally therethrough. The channel is configured to receive a bone graft or bone graft substitute material therein, the one or more helical structures formed of a material permitting the body to be one of expanded, compressed and curved to fill a target space of a target bone.

First claim

What is claimed is:

1. A bone graft containment device, comprising:
a body formed via one or more helical structures extending about a longitudinal axis of the body from a first end to a second end to define a channel extending longitudinally through the body, wherein each of the one or more helical structures of the body forms a helix surrounding the channel, the channel configured to receive a bone graft material therein, each of the one or more helical structures formed of a material permitting the body to be one of expanded, compressed and curved to fill a target space of a target bone;
a first fixation element receiving structure connecting at least two adjacent turns of the one or more helical structures, wherein the first fixation element receiving structures is a first button connecting adjacent turns of the one or more helical structures and including an opening extending therethrough for receiving a shaft of a fixation element; and
a second fixation element receiving structure including a second button separated from the first button via a distance along a length of the body.

2. The device of claim 1 , further comprising a plurality of longitudinal struts extending along at least a portion of a length of the body, wherein the first fixation element receiving structure is formed by adjacent ones of the longitudinal struts, a spacing between the adjacent longitudinal struts being configured to receive a shaft of a fixation element.

3. The device of claim 2 , wherein at least a first one of the longitudinal struts is interrupted along the length of the body so that the first longitudinal strut is divided into multiple longitudinal strut segments along the length of the body.

4. The device of claim 2 , wherein the longitudinal struts extend along the length of the body in one of a linear configuration and an oscillating wave configuration.

5. The device of claim 1 , wherein the body is formed via at least two helical structures.

6. The device of claim 5 , further comprising a first connecting structure connecting the first end of the at least two helical structures and a second connecting structure connecting the second end of the at least two helical structures.

7. The device of claim 5 , wherein a first one of the at least two helical structures extends in a first direction about the longitudinal axis of the body and a second one of the at least two helical structures extends in a second direction about the longitudinal axis of the body, the second direction opposing the first direction.

8. The device of claim 7 , wherein the first and second helical structures are connected to one another at a point where the first and second helical structures cross one another.

9. The device of claim 1 , wherein the one or more helical structures have a wave configuration along at least a portion of a length thereof so that, when the body is compressed, the wave configuration of adjacent turns of the one or more helical structures interlock with one another.

10. The device of claim 9 , wherein the wave configuration extends along one side of the body.

11. The device of claim 1 , wherein the one or more helical structures define a substantially cylindrical shape.

12. The device of claim 1 , wherein the one or more helical structures extend about the longitudinal axis at an angle relative to planes perpendicular to the longitudinal axis so that a shape of the body matches a shape of the target space to be filled.

13. The device of claim 1 , wherein the second fixation element receiving structure connects at least two adjacent turns of the one or more helical structures.

14. The device of claim 1 , wherein the body is flexed and deformed to match the exact shape of the target space.

15. A bone graft system, comprising:
a graft containment device including a body formed via one or more helical structures extending about a longitudinal axis of the body from a first end to a second end to define a channel extending longitudinally through the body, wherein each of the one or more helical structures of the body forms a helix surrounding the channel, the channel configured to receive a bone graft material therein, each of the one or more helical structures formed of a material permitting the body to be one of expanded, compressed and curved to fill a target space of a target bone
a fixation plate sized and shaped to be positioned along a length of the graft containment device to attach the graft containment device to the bone, the fixation plate including openings extending therethrough for receiving fixation elements therethrough; and
a plurality of longitudinal struts extending along at least a portion of a length of the body, a spacing between adjacent ones of the longitudinal struts forming a plurality of fixation element receiving structures connecting at least two adjacent turns of the one or more helical structures, each fixation element receiving structure being configured to receive a shaft of a fixation element therein.

16. The system of claim 15 , wherein a first helical structure of the one or more helical structures extends in a first direction about the longitudinal axis of the body and a second helical structure extends in a second direction about the longitudinal axis of the body, the second direction opposing the first direction.

17. The system of claim 15 , wherein the one or more helical structures have a wave configuration along at least a portion of a length thereof so that, when the body is compressed, the wave configuration of adjacent turns of the one or more helical structures interlock with one another.

18. A bone graft system, comprising:
a graft containment device including a body formed via a first helical structure extending about a longitudinal axis of the body from a first end to a second end to define a channel extending longitudinally through the body, wherein the first helical structure forms a helix surrounding the channel, the channel configured to receive a bone graft material therein, the first helical structure being formed of a material permitting the body to be one of expanded, compressed and curved to fill a target space of a target bone, wherein the graft containment device further includes a first fixation element receiving structure connecting at least two adjacent turns of the first helical structure; and
a fixation plate sized and shaped to be positioned along a length of the graft containment device to attach the graft containment device to the bone, the fixation plate attachment including openings extending therethrough for receiving fixation elements therethrough.

19. The system of claim 18 , further comprising a plurality of fixation element receiving structures, wherein the fixation element receiving structures are buttons, each button connecting adjacent turns of the first helical structure and including an opening extending therethrough for receiving a shaft of a fixation element, each button separated from an adjacent button via a distance along a length of the body.

20. The system of claim 18 , wherein the graft containment device includes a second helical structure extending about the channel, the first helical structure extending in a first direction about the longitudinal axis of the body while the second helical structure extends in a second direction about the longitudinal axis of the body, the second direction opposing the first direction.

21. The system of claim 18 , wherein the first helical structure has a wave configuration along at least a portion of a l

Assignees

• Depuy Synthes Products Inc

Inventors

• DANIEL Steffan
• Furrer André
• Larsen Scott

Classifications

• A61F2002/30578

  having apertures, e.g. for receiving fixation screws · CPC title

• A61F2/2846 Primary

  Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects (nets or sleeves applied to surface of endoprostheses A61F2/30907; bone plates A61B17/80; bone regeneration in dental surgery A61C8/0006) · CPC title

• A61F2002/30471

  connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type · CPC title

• A61F2/2803

  for mandibular reconstruction (temporo-mandibular joints A61F2/3099; bone plates for the jaw A61B17/8071) · CPC title

• A61F2002/2835

  Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material · CPC title