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Bifurcated axially flexible stent

  • US 7,842,077 B2
  • Filed: 03/08/2004
  • Issued: 11/30/2010
  • Est. Priority Date: 09/22/1997
  • Status: Expired due to Fees
First Claim
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1. A bifurcated stent comprising:

  • a first stent portion having first and second ends with an intermediate section therebetween, the stent further having a longitudinal axis and a plurality of longitudinally disposed cells, each of the cells having struts formed in the shape of waves, said waves having a spatial frequency along the length of the stent wherein each cell has an opening therein; and

    a second stent portion having first and second ends with an intermediate section therebetween, the stent further having a longitudinal axis and a plurality of longitudinally disposed cells, 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 to pass through a cell of the first stent portion; and

    wherein the spatial frequency of the wave associated with each of the struts in the first stent portion is decreased 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, by a factor of as great as twenty percent.

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