Patent ID: 7922753
Filing Date: 2011-04-12
Classification: A61F

Abstract:
1. A catheter assembly comprising: a catheter, the catheter comprising a catheter shaft and a balloon positioned at a distal end portion of the catheter shaft, the balloon including a first portion having a first outer diameter and a second portion having a second outer diameter that is different than the first outer diameter; a rotatable sheath, the rotatable sheath rotatably disposed about at least a portion of the balloon, the rotatable sheath including a first portion having a first portion inner diameter and a second portion having a second portion inner diameter that is different than the first portion inner diameter, the first portion of the rotatable sheath being arranged axially adjacent the second portion of the rotatable sheath, the first portion of the rotatable sheath arranged in radial alignment with the first portion of the balloon and the second portion of the rotatable sheath arranged in radial alignment with the second portion of the balloon such that the rotatable sheath is longitudinally secured relative to the balloon when the balloon is in both an expanded state and an unexpanded state; and a guidewire housing, the guidewire housing defining a guidewire lumen for passage of a guidewire therethrough, at least a portion of the guidewire housing being engaged to an outer surface of the rotatable sheath.