Kink-resistant bifurcated prosthesis
First Claim
1. An implantable endoluminal prosthesis adapted for placement at a bifurcation site within a body, said device having at least two segments, at least one of said segments having structural properties different from another of said segments.
2 Assignments
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Accused Products
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.
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Citations
34 Claims
- 1. An implantable endoluminal prosthesis adapted for placement at a bifurcation site within a body, said device having at least two segments, at least one of said segments having structural properties different from another of said segments.
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6. A stent-graft component comprising:
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a graft member having a single-lumen graft section and a bifurcated graft section, said bifurcated graft section having two separate lumen;
a single lumen stent section secured to at least a portion of the periphery of said graft section, said single lumen stent section extending over at least a portion of said bifurcated graft section. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 16, 17)
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15. A stent-graft section comprising:
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a generally tubular stent member section having an inner surface and an outer surface;
a multilumen graft section secured to at least one of said inner and outer surfaces of said tubular stent member.
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18. A stent section comprising a wire structure having undulations, said undulations characterized by an alternating series of upper apexes and lower apexes, said wire structure arranged in a helical configuration having at least a first turn and a second turn, said first turn having at least one lower apex which extends to substantially meet a lower apex of said second turn.
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19. The stent section of 18 wherein said upper and lower apexes of said of said first turn are in-phase with said apexes of said second turn.
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20. The stent section of 18 wherein said stent section comprises multiple turns, each one of said multiple turns having at least one lower apex which extends to substantially meet a lower apex of an adjacent turn.
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21. The stent section of 20 wherein the extended apex of each turn is spaced one undulation from the extended apex of a successive turn.
- 22. The stent section of 18 further comprising a graft member attached to said wire structure.
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23. A modular prosthesis adapted for placement at a bifurcation site within a body, said prosthesis comprising:
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a main body component having an extended cylindrical female receiving portion; and
a leg component having a mating cylindrical male portion, adapted for attachment to said extended cylindrical female receiving portion.
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29. A self-expanding stent-graft device comprising a stent member and a graft member, said stent member having a terminating end in the form of a turn of an undulating wire;
- said graft component being attached to said stent component, said graft component having a scalloped shape at an end which corresponds to the shape of said stent end.
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30. A method of forming a bifurcated graft member comprising the steps of:
heat bonding a first tube section to a second tube section such that a common septum is formed and removing said septum to form a smooth bifurcation.
- 31. A prosthesis anchor for securing an outer surface of an endoluminal prosthesis to a lumen wall, said anchor comprising a wire portion extending angularly in a first direction from said surface, said wire portion being pivotably coupled relative to said surface.
Specification