Bifurcated stent graft

Details Bifurcated stent graft Bifurcated stent graft

1998-02-11

1999-05-25

Willse, David H.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Stent structure

623 12, 606191, A61F 206, A61F 204

Patent

active

059066415

ABSTRACT:
A bifurcated stent graft implantable in branched internal passageways includes an open-frame stent latticework formed of helically wound structural strands, and a graft sleeve formed of interwoven textile strands. The sleeve is substantially impervious to fluids and is adjustable along with the graft between a nominal state and radially-reduced axially-elongated state, according to substantially the same relationship of radial reduction versus axial elongation. The sleeve and stent are bonded to one another at least at proximal and distal end regions of the stent graft. The sleeve preferably is surrounded by the stent, and incorporates a flow dividing feature in the form of an axially extending seam. The seam brings together portions of the sleeve that otherwise would be circumferentially spaced apart in the tubular sleeve shape. The stent latticework and graft sleeve can be coextensive, the sleeve can extend distally beyond the latticework, or the latticework can extend proximally beyond the sleeve, depending on the intended use. In other alternative embodiments, the sleeve can surround the latticework.

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