Patent ID: 7507256
Filing Date: 2009-03-24
Classification: A61F

Abstract:
1. A diaphyseal implant component comprising: a first end; a second end with a bore and an annular surface; a longitudinal axis extending from the first end to the second end, the annular surface of the second end being perpendicular to the longitudinal axis; and an outer surface including a first tapered portion extending from the first end and a second tapered portion extending from the annular surface of the second end; wherein the bore is tapered and has a maximum inner dimension at the second end and a minimum inner dimension spaced between the first end and the second end of the implant component; the first tapered portion of the outer surface has a frusto-conical shape with a minimum outer dimension at the first end and a maximum outer dimension spaced from the first end; the second tapered portion of the outer surface has a minimum outer dimension at the second end and a maximum outer dimension spaced from the first end and second end; the second tapered portion has the same outer dimension along two perpendicular transverse axes at the maximum outer dimension of the second tapered portion; and the first tapered portion of the outer surface is smooth and the second tapered portion of the outer surface is porous; and the second tapered portion of the outer surface comprises a plurality of steps, each step having a maximum outer dimension and a height, the step nearest the second end having the smallest outer dimension and the step nearest the first end having the largest outer dimension.