Helically formed stent/graft assembly
AssigneeSciMed Life Systems, Inc.
InventorScott Smith
Life of this patent
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Abstract
The present invention relates to a support structure/membrane composite device which includes a support structure, such as a radially expandable stent, a porous non-textile polymeric membrane adjacent to said stent and a thermoplastic anchor means attaching said stent to said porous non-textile polymeric membrane. The porous non-textile polymeric membrane is preferably made from expandable fluoropolymer materials. The anchoring means is a thermoplastic material which is dissolvable at the interface between the support structure and membrane by a suitable solvent which wets the membrane surface and deposits the thermoplastic material within the pores of the membrane. Methods of preparing the device are also disclosed.
Claims15
A stent/graft composite device formed from a flat preformed planar strip and wire assembly comprising:
- an elongate preformed non-textile planar strip of polymeric graft material having first and second opposed surfaces and an elongate stent wire attached onto one of said opposed flat surfaces of said strip to form said flat strip assembly, said strip assembly being helically wound into a continuous tubular structure.
A covered stent assembly formed from a flat planar strip and wire assembly comprising a length of a planar preformed non-textile cover strip of polymeric graft material having first and second opposed flat surfaces and a length of wire attached onto one of said opposed flat surfaces along the length of said strip to form said flat planar strip and wire assembly, said strip and wire assembly being helically wound forming windings and further forming a continuous tubular structure.
Dependencies are inferred from the claim text.