Patent ID: 7556648
Filing Date: 2009-07-07
Classification: A61F,Y10S

Abstract:
1. 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.