Kink resistant bifurcated prosthesis
AssigneeGore Enterprise Holdings, Inc.
InventorsTroy Thornton, Randy S. Chan, Lilip Lau
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Abstract
The invention consists of an endoluminal prosthesis adapted for placement at a bifurcation site within the body. The stent or stent-graft may be constructed to have segments of differing structural properties. A section of the stent-graft may be constructed to have a single-lumen tubular stent member covering a multilumen graft member. The stent-graft may comprise at least two modular components adapted for in situ assembly. An extended cylindrical interference fit may be used to seal the modular components.
Claims12
A stent-graft comprising:
- a graft member having a proximal end and a distal end and including a single lumen graft section integral with a bifurcated graft section, said bifurcated graft section having two separate lumens;
- a single lumen stent section secured to at least a portion of a periphery of said single lumen graft section and extending over at least a portion of said bifuircated graft section, said single lumen stent section being formed from a helically arranged undulating member having a plurality of helical turns with undulations in one helical turn being essentially in-phase with undulations of adjacent helical turns, a portion of undulations in a first helical turn of said plurality of said helical turns extending toward said proximal end and another portion of said undulations in said first helical turn extending toward said distal end, some proximally extending undulations of said first helical turn having an amplitude greater than other proximally extending undulations of said first helical turn.
A self-expanding stent-graft device comprising a stent member and a graft member, said stent member being formed from a helically arranged undulating member having a plurality of helical turns wherein undulations in one helical turn are essentially in phase with undulations of an adjacent helical turn, a portion of undulations in a first helical turn of said plurality of helical turns extending toward a proximal end of said stent member and another portion of said undulations in said first helical turn extending toward a distal end of said stent member, some proximally extending undulations of said first helical turn having an amplitude greater than other proximally extending undulations of said first helical turn, said proximal end of said stent member being defined by a turn of said helically arranged undulating member, said graft member being attached to said stent member, said graft member having a scalloped shape at an end which corresponds to the shape of said distal end of said stent member.
Dependencies are inferred from the claim text.