Patent ID: 7458986
Filing Date: 2008-12-02
Classification: A61F

Abstract:
1. Self-expanding stent for splinting and/or keeping open a hollow organ, the stent comprising: a first elastic tubular layer; a first filament layer consisting essentially of several first nonintersecting helical filaments disposed in a phase-shifted fashion and a spaced apart relationship in one plane on the first elastic tubular layer, wherein the several first helical filaments do not intersect with any filaments in the one plane; a second elastic tubular layer coating the several first helical filaments, the second elastic tubular layer being connected at least at ends thereof with the first elastic tubular layer in a material-bonding fashion for fixing a position of the first helical filaments; a second filament layer comprising at least one second helical filament disposed on the first helical filaments outside of a plane spanned by the first helical filaments; and a third elastic tubular layer coating the at least one second helical filament, the third elastic tubular layer comprising a polymer connected to the second elastic tubular layer.