Patent ID: 8926679
Filing Date: 2015-01-06
Classification: A61F

Abstract:
1. A stent delivery system comprising: a catheter including a proximal portion and a distal portion, the distal portion comprising a stent, the stent being expandable from a contracted configuration to an expanded configuration, the distal portion of the catheter further including a first tubular shaft and a second tubular shaft disposed within the stent, the first tubular shaft being spaced apart from and extending parallel to the second tubular shaft, and a balloon disposed around at least a portion of the first tubular shaft, the balloon having a contracted configuration and an expanded configuration, wherein, when the balloon is in the contracted configuration, the balloon includes a central body disposed about the first tubular shaft and only two wings, a first wing having a first portion and a second portion and a second wing having a first portion and a second portion, wherein the first portion of each of the first and second wings extends away from the central body and away from the first tubular shaft toward and on either side of the second tubular shaft, the first and second wings each having a fold such that the second portion of each of the first and second wings is folded upon the first portion, the second portions being folded such that the second portion of each wing extends inward on either side of the second tubular shaft and back toward the first tubular shaft, such that the second portion of each of the first and second wings is positioned adjacent the second tubular shaft, between the second tubular shaft and the first portion of the first and second wings, respectively, such that the second tubular shaft extends between the first and second wings, and a majority of balloon material is positioned on radially opposite sides of the first and second tubular shafts, resulting in the distal portion of the catheter, including the first and second tubular shafts and the folded balloon wings, having a substantially circular cross-section, wherein the first wing and the second wing extend radially from the central body.