Bifurcated endoluminal prosthesis
First Claim
1. A prosthesis assembly comprising:
- a proximal prosthesis having a proximal end and a distal end, the proximal prosthesis further having a proximal orifice at the proximal end to be located in and when expanded to be supported by a vascular vessel;
at least one distal prosthesis having a proximal end and a distal end;
the proximal prosthesis having at least two transversely placed tapering portions that extend from an intermediate portion to the distal end of the proximal prosthesis to form a bifurcated prosthesis;
the proximal prosthesis also having at least one distal orifice at the distal end of at least one of the tapering portions which when expanded serves to receive the proximal end of the at least one distal prosthesis;
wherein the proximal prosthesis and the at least one distal prosthesis each comprises an expandable stent constructed with a wire skeleton having one or more parts that extends from the respective proximal ends to the respective distal ends;
at least one fabric layer over and/or in the wire skeletons of the expandable stents; and
wherein a cross-sectional area of the at least one distal orifice when expanded is sufficiently less than that of the proximal end of the at least one distal prosthesis when expanded within the at least one distal orifice so as to form a seal between the proximal and distal prostheses.
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Accused Products
Abstract
The invention comprises:
An introducer for delivering into the vasculature a straight or bifurcated stent or prosthesis; a method for delivering into the vasculature a straight or bifurcated stent or prosthesis; a method of treating and angeological disease using a bifurcated stent; an endoluminal stent having perpendicular hoop members, each hoop member formed of wire in a sinuous configuration, at least some of juxtaposed apices in neighboring hoops being secured to one another, such stents also forming axially aligned segments in straight stents, and segments of bifurcated stents in particular embodiments. Certain embodiments of such stents also include barbs, fabric covering and radiopaque markers.
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Citations
11 Claims
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1. A prosthesis assembly comprising:
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a proximal prosthesis having a proximal end and a distal end, the proximal prosthesis further having a proximal orifice at the proximal end to be located in and when expanded to be supported by a vascular vessel; at least one distal prosthesis having a proximal end and a distal end; the proximal prosthesis having at least two transversely placed tapering portions that extend from an intermediate portion to the distal end of the proximal prosthesis to form a bifurcated prosthesis; the proximal prosthesis also having at least one distal orifice at the distal end of at least one of the tapering portions which when expanded serves to receive the proximal end of the at least one distal prosthesis; wherein the proximal prosthesis and the at least one distal prosthesis each comprises an expandable stent constructed with a wire skeleton having one or more parts that extends from the respective proximal ends to the respective distal ends; at least one fabric layer over and/or in the wire skeletons of the expandable stents; and wherein a cross-sectional area of the at least one distal orifice when expanded is sufficiently less than that of the proximal end of the at least one distal prosthesis when expanded within the at least one distal orifice so as to form a seal between the proximal and distal prostheses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A prosthesis assembly comprising:
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a proximal prosthesis having a proximal end and a distal end, the proximal prosthesis being expandable and having a proximal orifice at the proximal end; first and second distal prostheses each having a proximal end and a distal end; the proximal prosthesis having at least two transversely placed tapering portions that extend from an intermediate portion to the distal end of the proximal prosthesis to form a bifurcated prosthesis; the proximal prosthesis also having a distal orifice at the distal end of at least one of the tapering portions that when expanded receives at least one proximal end of the first and second distal prostheses; wherein each of the proximal and distal prostheses comprises an expandable stent constructed with a wire skeleton having one or more parts that extends from the respective proximal ends to the respective distal ends; and wherein a cross-sectional area of at least one distal orifice of the proximal prosthesis when expanded is sufficiently less than a cross-sectional area of a proximal end of the first or second distal prosthesis when expanded within the at least one distal orifice, so as to form a seal with the at least one distal orifice when the proximal end of the first or second distal prosthesis is expanded therein. - View Dependent Claims (10)
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11. A prosthesis assembly comprising:
a proximal prosthesis and a pair of distal prostheses each having a proximal end and a distal end, the proximal prosthesis being expandable and having the distal end and a proximal orifice at the proximal end, the proximal prosthesis having at least two transversely placed tapering portions that extend from an intermediate portion to the distal end of the proximal prosthesis to form a bifurcated prosthesis, the proximal prosthesis also having at least two distal orifices at the distal ends of the tapering portions which when expanded serve to receive the proximal ends of the pair of distal prostheses, wherein each of the proximal and distal prostheses comprises an expandable stent constructed with a wire skeleton having one or more parts that extends from the respective proximal ends to the respective distal ends and at least one fabric layer over and/or in the wire skeletons of the stents, and wherein cross-sectional areas of the at least two of the distal orifices of the proximal prosthesis when expanded are sufficiently less than cross-sectional areas of the proximal ends of each of the pair of distal prostheses when expanded within the distal orifices so as to form a seal with each of the distal orifices when the pair of distal prostheses are expanded therein.
Specification