Stent which is easily recaptured and repositioned within the body
First Claim
1. A retractable and repositionable stent for implantation within the body of a patient, said stent comprising;
- a) a substantially cylindrical self-expanding member having a proximal end, a distal end, a longitudinal axis extending therebetween and an interior; and
b) at least two spaced apart longitudinal legs having distal and proximal ends, said distal ends of said legs attached to said proximal end of said member, said legs extending proximally away from said member, at least one of said legs further including an axially extending flange adjacent its proximal end said flanges being substantially blunt.
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Abstract
In accordance with the present invention there is provided a pre-cursor stent for positioning within the infrarenal neck, between an abdominal aortic aneurysm and the renal arteries of a patient to assist in repairing the abdominal aortic aneurysm. The stent is designed to be coupled to a graft for directing blood flow through the aneurysm. The stent is made from a substantially cylindrical self-expanding member having a proximal end, a distal end, a longitudinal axis extending therebetween and an interior. The precursor stent further includes at least two spaced apart longitudinal legs having distal and proximal ends, the proximal ends of the legs attached to the distal end of the member, the legs extending distally from the member, each the leg including a flange adjacent its distal end. Also in accordance with the present invention is an aortic graft, having the above mentioned precursor stent attached thereto when fully deployed. Further in accordance with the present invention is a delivery apparatus for the above described precursor stent.
707 Citations
20 Claims
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1. A retractable and repositionable stent for implantation within the body of a patient, said stent comprising;
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a) a substantially cylindrical self-expanding member having a proximal end, a distal end, a longitudinal axis extending therebetween and an interior; and
b) at least two spaced apart longitudinal legs having distal and proximal ends, said distal ends of said legs attached to said proximal end of said member, said legs extending proximally away from said member, at least one of said legs further including an axially extending flange adjacent its proximal end said flanges being substantially blunt. - View Dependent Claims (2, 3, 4, 5)
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6. A pre-cursor stent for positioning within the infrarenal neck, between an abdominal aortic aneurysm and the renal arteries of a patient to assist in repairing the abdominal aortic aneurysm, said stent designed to be coupled to a graft for directing blood flow through the aneurysm, said precursor stent comprising;
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a) a substantially cylindrical self-expanding member having a proximal end, a distal end, a longitudinal axis extending therebetween and an interior; and
b) at least two spaced apart longitudinal legs having distal and proximal ends, said distal ends of said legs attached to said proximal end of said member, said legs extending proximally away from said member, each said leg including anaxially extending flange adjacent its proximal end said flanges being substantially blunt. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. An aortic graft for intravascular delivery to repair an abdominal aortic aneurysm in an aorta having two iliac arteries associated therewith, said graft comprising:
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a) first and second graft members having distal and proximal ends, each graft member is designed to be inserted through a femoral artery in a collapsed condition, and inserted within the aneurysm and deployed therein, said distal ends of said graft members being distal to said aneurysm adjacent an arterial wall; and
b) a precursor stent, surrounding said distal ends of each of said graft members and coupled thereto, said precursor stent comprising a substantially cylindrical self-expanding member having a proximal end, a distal end, a longitudinal axis extending therebetween and an interior, said precursor stent further including at least two spaced apart longitudinal legs having distal and proximal ends, said distal ends of said legs attached to said proximal end of said member, said legs extending proximally away from said member, each said leg including an axially extending flange adjacent its proximal end said flanges being substantially blunt, said precursor stent further including a gasket member attached thereto for substantially preventing blood from flowing through any gaps between said distal ends of said graft members, and between said distal ends of said graft members and said arterial wall, said precursor stent. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification