Patent ID: 6736844
Filing Date: 2004-05-18
Classification: A61F

Abstract:
A stent for insertion into a canal in a body comprising a first tubular filamentary element substantially continuously spirally coiled at least in its central portion and having a proximal end portion and a distal end portion; a second tubular filamentary element extending between the proximal and distal end portions and which is substantially continuously spirally coiled at least in its central portion and defining a double helix structure with said first tubular filamentary element, said double helix structure on both ends thereof being ring-shaped to provide increased radial support, and wherein said ends have a plane which is oriented transverse to the longitudinal axis of the stent, the centers of said ring-shaped ends lying along the longitudinal axis of the central portion of the helix structure, and wherein said distal end portion, said proximal end portion and central portion of each element define bends of various lengths.