Endoprosthesis for vascular bifurcation

摘要

An apparatus for treating an area of bifurcation where a principal body conduit separates into at least two secondary conduits comprises a radially expandable first stent body. The first stent body has a substantially conical shape and a first end having a greater diameter than a second end when fully expanded. The first stent body is preferably shaped to be independent of any other stent bodies, and is free of any means for connecting to any other stent bodies when fully expanded.

主权项

1. An assembly for positioning an apparatus for treating an area of bifurcation where a principal body conduit separates into at least two secondary conduits and wherein the principal conduit increases in cross section to the junction with the secondary conduits, said assembly comprising positioning equipment and the apparatus, the apparatus comprising a radially expandable first stent body configured to be engaged in the primary conduit in the area of bifurcation, wherein:
said first stent body being radially expandable and having, in a predetermined fully expanded state, a first distal end having a greater diameter than a second proximal end, and a cross section substantially greater than a cross section of one of the secondary conduits; the first distal end being substantially conical and the second proximal end being substantially cylindrical; the first stent body being shaped to conform to the increasing cross section of the principal conduit, in the area of a widened transitional zone of the bifurcation that separates the principal conduit from the secondary conduits, in the direction of at least one secondary conduit, said first end opening out in the direction of said secondary conduits upon expansion; the first stent body being shaped to be independent of other stent bodies, and free of means for connecting to other stent bodies, when the first stent body is in a predetermined fully expanded state; and the positioning equipment being capable of carrying the stent.