Vertebral body replacement implant
View Patent ↗A vertebral replacement implant assembly for inserting in a space left by one or more removed vertebrae between adjacent intact vertebrae, according to which at least two elongated members are disposed in the space and a connector member is connected between adjacent elongated members in a manner so that a dimension of the assembly thus formed can be varied. Further, a graft containment device for use with a vertebral implant.
1. A vertebral replacement implant for interposition in a space left by one or more removed vertebrae between adjacent intact vertebrae, comprising:
a tubular body having opposite ends and sized to span at least a portion of the space between the intact vertebrae;
a pair of endplate assemblies attached to each of the opposite ends of the body, each of the endplate assemblies having an end surface and a tubular portion defining a bore therethrough extending through the end surface; and
a basket comprising a tubular wall bounded by a base having a bottom surface, the wall and base defining a cavity, wherein the basket is adapted to be disposed within at least one of the bores.
2. The vertebral replacement implant according to claim 1 wherein the cavity is suitable for receiving graft material.
3. The vertebral replacement implant according to claim 1 wherein the basket extends into the tubular body.
4. The vertebral replacement implant according to claim 1
wherein the basket includes at least one positioning tab; and
wherein the end surface includes at least one positioning recess configured to engage the at least one positioning tab.
5. The vertebral replacement implant according to claim 1
wherein the tubular portion has first threads defined thereon; and
wherein the basket has second threads thereon configured to threadedly engage the first threads on the cylindrical portion.
6. The vertebral replacement implant according to claim 1
wherein the basket includes one or more apertures.
7. The vertebral replacement implant according to claim 6 wherein the apertures extend over more than 50% of the basket.
8. The vertebral replacement implant according to claim 1 , wherein the tubular body includes a wall defining a hollow interior, the wall further defining a plurality of openings therethrough, the openings being in communication with the hollow interior.
9. The vertebral replacement implant according to claim 8 , wherein the openings are sized to allow a graft material entry into the hollow interior.
10. The vertebral replacement implant according to claim 8 , wherein after the interposition in the space left by one or more vertebrae, at least one of the openings is accessible.
11. The vertebral replacement implant according to claim 8 ,
wherein the basket includes one or more apertures; and
wherein the openings are sized to provide a line of sight through the openings, through the hollow interior, through the one or more apertures, and into the cavity of the basket.
12. The vertebral replacement implant according to claim 1 wherein the base of the basket comprises apertures.
13. The vertebral replacement implant according to claim 1 wherein the tubular wall is tapered.