Patent ID: 6746476
Filing Date: 2004-06-08
Classification: A61F

Abstract:
A bifurcated stem comprising a first stent portion having first and second ends with an intermediate section therebetween, the first stent portion further having a longitudinal axis and a plurality of longitudinally disposed cells, each of the cells having generally longitudinally extending struts formed in the shape of waves having a spatial frequency wherein each cell has an opening therein; anda second stent portion having first and second ends with an intermediate section therebetween, the second stent portion further having a longitudinal axis and a plurality of longitudinally disposed cells each of the cells having generally longitudinally extending struts, wherein each cell has an opening therein; and each of said stent portions capable of expanding from a first respective diameter to a larger second respective diameter; and wherein said second stent portion is configured in its said first respective diameter passing through a cell of the first stent portion in its first diameter; and wherein the spatial frequency of the wave associated with each of the generally longitudinally extending struts of the first stent portion is increased in a first end region lying proximate to the first end and in a second end region lying proximate to the second end, in comparison to the spatial frequency of the wave in the intermediate section.