Patent ID: 9320629
Filing Date: 2016-04-26
CPC Classification: A61F

Claim Text:
1. A medical device comprising: a stent to treat a patient, said stent positionable in a body lumen of the patient having an inner lining, the stent, in an expanded state, having a cylindrical shape extending along a longitudinal axis formed by a stent wall which defines a diameter of an unobstructed axial passage communicating with open ends at two opposite axial ends of the stent, wherein the wall is elastic under tension so that on exertion of a tensile pulling force, acting on one of the ends of the stent in the longitudinal direction, the diameter of the stent decreases over the entire longitudinal extent of the stent; and wherein at least one of the ends of the stent exhibits a wire elongation having an end which runs along a path of catheterization and projects beyond the body of the patient; and wherein the wall of the stent is made of a woven wire, a knitted wire, and/or a braided wire or a wire mesh; and wherein, upon exertion of the tensile pulling force, wall components of the elastic wall of the stent oriented in a direction transverse to the longitudinal axis orient themselves towards the longitudinal axis decreasing the diameter of the stent over the entire longitudinal extent of the stent; and wherein the stent is configured such that pulling on said wire end without catheterization allows for retrieval of the stent from the body lumen within a dwell time of two days and wherein said stent is configured to not exert any tangential shear force on said inner lining.