Prosthetic vertebral implant
AssigneeHeinrich Ulrich
InventorHelmut Schonhoffer
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Abstract
A spinal implant for engagement in a space left by ablation of a vertebral body between a pair of adjacent vertebrae has a tubular center element extending along an axis and a pair of end elements. The center element is formed with upper and lower screwthreads of opposite hand and with a plurality of radially throughgoing apertures. The upper and lower tubular end elements are each formed with a plurality of radially throughgoing apertures, each have a circular-section inner end threaded onto a respective one of the screwthreads, and each have an outer end adapted to bear on a respective one of the adjacent vertebrae.
Claims18
A spinal implant for engagement in a space left by ablation of a vertebral body between a pair of adjacent vertebrae, the implant comprising:
- a tubular center element extending along an axis, having upper and lower ends formed with respective upper and lower external screwthreads of opposite hand, and formed with a plurality of radially throughgoing apertures;
- and
- respective upper and lower tubular end elements each formed with a plurality of radially throughgoing apertures, axially flanking the center element, each having an internally threaded circular-section inner end threaded onto a respective one of the external screwthreads and radially surrounding the respective upper and lower ends of the center element, and each having an outer end adapted to bear on a respective one of the adjacent vertebrae, all the apertures being so positioned and dimensioned that when the end elements are threaded to the center element each center-element aperture in a region of axial overlap between the elements is at least partially radially aligned with one of the respective end-element apertures.
Dependencies are inferred from the claim text.