An endoprosthesis is provided having at least first and second resilient coiled sheet portions, and an intermediate region comprising a helical articulation. The coiled sheet portions may be of the same or different diameters so as to accommodate a taper in the body lumen, while the helical...http://www.google.fr/patents/US5824052?utm_source=gb-gplus-shareBrevet US5824052 - Coiled sheet stent having helical articulation and methods of use
Coiled sheet stent having helical articulation and methods of use
