Patent ID: 8323350
Filing Date: 2012-12-04
Classification: A61F

Abstract:
1. A flexible stent for positioning within a body lumen, the stent comprising: a stent region having a proximal end and a distal end and a first aperture defined therethrough; a first transition region extending outwardly from the proximal end of the stent region and at least a portion of the first transition region configured in a helix comprising a plurality of turns, the first transition region having a larger diameter than at least a portion of the stent region, the helix defining a second aperture therethrough; and a second transition region extending outwardly from the distal end of the stent region, the second transition region having a larger diameter than at least a portion of the stent region and having a third aperture defined therethrough, wherein the second transition region comprises a plurality of leg members extending axially from the distal end of the stent region and each of the leg members extends from near the distal end of the stent region to a distal end of the second transition region, wherein each of the leg members are a different length, wherein at least one of the first transition region and the second transition region includes a gap extending from near the stent region to a free end of a respective transition region such that the gap does not extend within the stent region, and wherein each of the first and second transition regions are capable of expanding from a first diameter prior to being deployed into the lumen to a larger second diameter after being deployed into the lumen, wherein each of the first, second, and third apertures are collinear.