Patent ID: 7846198

Claim:
A vascular prosthesis for implantation in a body vessel, the vascular prosthesis comprising: a circumferentially non-expanding, unwindingly radially self-expanding helical section having distal and proximal ends and comprising a coil-shaped helical element extending more than 360° about a longitudinal axis of the prosthesis; a circumferentially radially self-expanding anchoring section joined to either the distal end or the proximal end; the anchoring section comprising a circumferentially continuous tubular section having a plurality of circumferentially radially expandable elements connected to one another; the helical and anchoring sections being self-expandable from a contracted state, suitable for transluminal insertion into a body vessel, to an expanded, deployed state, for engagement with the vessel wall; the helical section being joined to the anchoring section at a junction, the junction consisting of one extension strut connecting the anchoring section and the helical section whereby the anchoring section can fully expand to the expanded, deployed state before the helical section expands; and said helical element comprising a plurality of turns, adjacent ones of said plurality of turns at least partially overlap when in the contracted state.