Bifurcated endoluminal prosthesis
First Claim
1. An introducer for delivering, into the vasculature at an angeological bifurcation where a blood vessel branches into two branched vessels, a bifurcated endoluminal stent or prosthesis having a proximal portion adapted to be disposed in said blood vessel and a distal portion adapted to be disposed at least partially in one of said two branched vessels, said introducer comprising:
- (a) a tubular outer sheath;
(b) a proximal portion pusher disposed at least partially within said outer sheath; and
(c) a distal portion pusher disposed at least partially within said proximal portion pusher.
5 Assignments
0 Petitions
Accused Products
Abstract
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
53 Claims
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1. An introducer for delivering, into the vasculature at an angeological bifurcation where a blood vessel branches into two branched vessels, a bifurcated endoluminal stent or prosthesis having a proximal portion adapted to be disposed in said blood vessel and a distal portion adapted to be disposed at least partially in one of said two branched vessels, said introducer comprising:
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(a) a tubular outer sheath;
(b) a proximal portion pusher disposed at least partially within said outer sheath; and
(c) a distal portion pusher disposed at least partially within said proximal portion pusher. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An introducer for delivering into the vasculature at an angeological bifurcation where a blood vessel branches into two branched vessels, an endoluminal prosthesis having a proximal stent portion and a distal stent portion, said introducer comprising:
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(a) a tubular outer sheath;
(b) a proximal portion pusher disposed at least partially within said outer sheath and having a proximal end adapted to contact said proximal stent portion;
(c) a distal portion pusher disposed at least partially within said proximal portion pusher and having a proximal end adapted to contact said distal stent portion; and
(d) a balloon catheter, having a balloon attached thereto, disposed at least partially within said distal portion pusher.
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9. An introducer for delivering an endoluminal stent into the vasculature at an angeological bifurcation where a blood vessel branches into two branched vessels, said introducer comprising:
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(a) a tubular outer sheath;
(b) a proximal portion pusher disposed at least partially within said outer sheath and having a proximal end adapted to contact a distal end of said stent; and
(c) a distal portion pusher disposed at least partially within said proximal portion pusher and secured to said proximal portion pusher such that proximal ends of said distal portion pusher and said proximal portion pusher are flush with one another.
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10. A method for delivering a bifurcated endoluminal stent or prosthesis having a proximal portion and a first distal portion into the vasculature at an angeological bifurcation where a blood vessel branches into a first branched vessel and a second branched vessel, said method comprising the steps of:
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(a) inserting a first introducer containing said stent or prosthesis into the vasculature to a predetermined delivery location, said first introducer comprising an outer sheath, a proximal portion pusher, and a distal portion pusher;
(b) withdrawing said outer sheath of said first introducer while maintaining said proximal portion pusher in a fixed position until said proximal portion of said stent or prosthesis is deployed from said first introducer into said blood vessel;
(c) withdrawing said outer sheath and said proximal portion pusher while maintaining said distal portion pusher in a fixed position until said first distal portion of said stent or prosthesis is deployed from said first introducer at least partially into said first branched vessel; and
(d) withdrawing said first introducer from the vasculature. - View Dependent Claims (11, 12, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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13. A method for delivering, into the vasculature at an angeological bifurcation where a blood vessel branches into two branched vessels, an endoluminal prosthesis having a proximal stent portion, and a distal stent portion, said method comprising the steps of:
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(a) inserting an introducer containing said prosthesis into the vasculature to a predetermined delivery location, said introducer comprising an outer sheath, a proximal stent portion pusher, a distal stent portion pusher, and a balloon catheter having a balloon attached thereto;
(b) inflating said balloon to at least partially block blood flow in said blood vessel;
(c) withdrawing said outer sheath of said introducer while maintaining said proximal stent portion pusher in a fixed position until said proximal stent portion of said prosthesis is deployed from said introducer into said blood vessel;
(d) withdrawing said outer sheath and said proximal stent portion pusher while maintaining said distal stent portion pusher in a fixed position until said distal stent portion of said prosthesis is deployed from said introducer into said blood vessel; and
(e) withdrawing said introducer from the vasculature.
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14. A method of treating an angeological disease at a bifurcation site where a blood vessel branches into a first branched vessel and a second branched vessel comprising the steps of:
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(a) disposing in said blood vessel a proximal portion of an endoluminal stent;
(b) directing blood flow from said blood vessel into said first branched vessel through a first distal portion of said endoluminal stent, said first distal portion being connected to said proximal portion and extending into said first branched vessel; and
(c) directing blood flow from said blood vessel into said second branched vessel through a second distal portion of said endoluminal stent, said second distal portion being connected to said proximal portion and extending into said second branched vessel.
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19. An endoluminal stent comprising a plurality of hoops which are axially displaced in a tubular configuration along a common axis, each of said hoops
(a) being formed by a substantially complete turn of a sinuous wire having apices, and (b) having a circumference that lies in a plane substantially perpendicular to the longitudinal axis of said stent; wherein apices of adjacent hoops are juxtaposed to one another, and at least two juxtaposed apices are connected by a securing means.
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42. A method of making an endoluminal stent having a plurality of hoops which are axially displaced in a tubular configuration, each of said hoops being formed by a substantially complete turn of a sinuous wire with apices and having a circumference that lies in a plane substantially perpendicular to the longitudinal axis of the stent, said method comprising the steps of:
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(a) winding a wire in a zig-zag pattern around a mandrel having a plurality of upstanding pins defining said zig-zag pattern to form a first hoop having apices and a circumference that lies in a plane substantially perpendicular to the longitudinal axis of said mandrel;
(b) longitudinally displacing said wire with respect to the axis of said mandrel;
(c) winding said wire in a zig-zag patter;
around a plurality of upstanding pins on said mandrel to form a second hoop, adjacent said first hoop, having apices juxtaposed to the apices of said first circumferential hoop and a circumference that lies in a plane substantially perpendicular to the longitudinal axis of said mandrel;
(d) longitudinally displacing said wire with respect to the axis of said mandrel;
(e) repeating steps (a)-(d) to form additional hoops until a predetermined number of hoops are formed;
(f) annealing said wire on said mandrel;
(g) cooling said wire on said mandrel;
(h) removing said wire from said mandrel; and
(i) securing together at least two juxtaposed apices of adjacent hoops.
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- 43. An endoluminal stent comprising a radiopaque marker disposed on at least one end of the stent.
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50. A bifurcated stent for use in juxtaposition with an angeological bifurcation comprising a proximal stent portion adapted to be disposed within a blood vessel in juxtaposition with a bifurcation, a first distal stent portion adapted to extend across the bifurcation into one of the branched blood vessels, and a second distal stent portion adapted to allow blood to flow from the proximal portion into the other branched vessel and, at least one barb extending radially outward from any of said proximal stent portion, said first distal stent portion, and said second distal stent portion.
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51. Apparatus for delivering an endoluminal stent or prosthesis into the vasculature comprising:
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(a) an introducer having a on a distal end thereof; and
(b) a cartridge having an inner tubular member containing said stent or prosthesis in a compressed state, an outer sheath, and a second portion of said lock fitting;
wherein said first portion of said lock fitting on said introducer mates with said second portion of said lock fitting on said cartidge to prevent relative movement of said introducer and said cartridge. - View Dependent Claims (52, 53)
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Specification