Patent ID: 6966923
Filing Date: 2005-11-22
Classification: A61F

Abstract:
1. A stent comprising: a first end region at a first longitudinal end of the stent opposed to a second end region at a second longitudinal end of the stent; elongated elements arranged in a generally zig-zag fashion between the first end region and the second end region; and a plurality of loops, each of the plurality of loops formed at an overlying intersection of adjacent elongated elements, each of the plurality of loops having a tip; wherein the tips of the plurality of loops in the first end region form a first end circle, and each individual loop in the first end region is arranged at a twist angle, the twist angle of each individual loop being measured in a first end plane defined by the first end circle between a line tangent to the first end circle perpendicular to a radius line from a longitudinal axis of the stent to a tip of the individual loop being measured and a loop line longitudinally dividing the individual loop in the first end region; and wherein the twist angle of each individual loop is a first twist angle when the stent is in a collapsed configuration and a second twist angle different from said first twist angle when the stent is in a deployed configuration.