Patent ID: 6063111
Filing Date: 2000-05-16
Classification: A61B,A61F

Abstract:
A vascular stent system for treating a blood vessel defect, comprising:a stent formed of a resilient wire having a helical shape in a relaxed state, the stent defining a proximal opening at a proximal end, a body portion defining a lumen and a distal opening at a distal end defining a longitudinal distance from the proximal opening, the stent having a pitch defined as the longitudinal distance between adjacent loops in the helical shape, wherein the stent can be stretched into a substantially linear shape and has a tendency to move from the substantially linear shape to the relaxed helical shape; and,a cover over at least a portion of the stent for providing support of a vessel at a vascular site, the cover extending between adjacent helical loops of the stent in the relaxed shape, wherein said cover comprises a first and second sheet adhered to said resilient wire, to thereby define first and second flaps each extending outwardly from said resilient wire, and wherein said first sheet is formed of a thrombogenic material and said second sheet is formed of a non-thrombogenic material.