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US 7,556,648 B2Granted
Spinal implant
AssigneeGeorge J. Picha
InventorsGeorge J. Picha, Jeffrey A. Goldstein
Life of this patent
Estimating the term…
Abstract
A spinal implant including a hollow, generally tubular shell having an exterior lateral surface, a leading end, and a trailing end. The exterior surface includes a plurality of pillars arranged in a non-helical array. Each pillar has a height of 100-4500 microns and a lateral dimension at the widest point of 100-4500 microns. The exterior surface also has a plurality of holes therethrough to permit bone ingrowth therethrough.
Claims16
A spinal implant comprising a hollow, generally tubular shell having an exterior surface, a first end, and a second end;
- a plurality of pillars monolithically formed with and projecting in a substantially radial direction outwardly away from said exterior surface in a regular array that extends over a substantial length of the generally tubular shell between the first and second ends, wherein at least a portion of said plurality of pillars are monolithically formed with the thread in a helical array and project radially outwardly away from a base surface of the thread;
- at least one thread projecting outwardly from the generally tubular shell between the first end and the second end, said thread helically extending about a circumference of the generally tubular shell, said implant being adapted for inserting between naturally adjoining spinal vertebrae for fusing the naturally adjoining spinal vertebrae, each pillar having a height of 100-4500 microns and a dimension in a direction perpendicular to the height of 100-4500 microns;
- said exterior surface having a plurality of holes therethrough to permit bone growth therethrough, wherein said holes are interspersed among said pillars.
Dependencies are inferred from the claim text.