Vascular prostheses for treating aneurysms
First Claim
1. Apparatus for use with a delivery catheter, the apparatus comprising an endovascular sealing stent-graft, which is configured to initially be positioned in the delivery catheter in a radially-compressed state, and to assume a radially-expanded state upon being deployed from the delivery catheter, and which comprises:
- a structural member, which comprises a plurality of structural stent elements, and which, when the stent-graft assumes the radially-expanded state, has a generally tubular shape, and is shaped so as to define at least two elongated indentations, each of which (a) extends rostrally to a rostral end of the structural member, (b) is tapered in a caudal direction until the indentation converges with the generally tubular shape of the structural member, (c) has an axial length of at least 2 cm, and (d) defines a concave surface that is open to an exterior of the stent-graft along the entire axial length of the indention; and
a fluid flow guide, which comprises at least one biologically-compatible substantially fluid-impervious flexible sheet, and which is coupled to at least a portion of the structural member, and covers at least a portion of each of the elongated indentations.
1 Assignment
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Accused Products
Abstract
An endovascular sealing stent-graft is configured to initially be positioned in a delivery catheter in a radially-compressed state, and to assume a radially-expanded state upon being deployed from the delivery catheter. The stent-graft includes a structural member, which includes a plurality of structural stent elements, and which, when the stent-graft assumes the radially-expanded state, has a generally tubular shape, and is shaped so as to define at least two elongated indentations, each of which extends rostrally to a rostral end of the structural member, and is tapered in a caudal direction until the indentation converges with the generally tubular shape of the structural member, and each of which has an axial length of at least 2 cm. The stent-graft further includes a fluid flow guide, which is coupled to at least a portion of the structural member, and covers at least a portion of each of the elongated indentations.
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Citations
18 Claims
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1. Apparatus for use with a delivery catheter, the apparatus comprising an endovascular sealing stent-graft, which is configured to initially be positioned in the delivery catheter in a radially-compressed state, and to assume a radially-expanded state upon being deployed from the delivery catheter, and which comprises:
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a structural member, which comprises a plurality of structural stent elements, and which, when the stent-graft assumes the radially-expanded state, has a generally tubular shape, and is shaped so as to define at least two elongated indentations, each of which (a) extends rostrally to a rostral end of the structural member, (b) is tapered in a caudal direction until the indentation converges with the generally tubular shape of the structural member, (c) has an axial length of at least 2 cm, and (d) defines a concave surface that is open to an exterior of the stent-graft along the entire axial length of the indention; and a fluid flow guide, which comprises at least one biologically-compatible substantially fluid-impervious flexible sheet, and which is coupled to at least a portion of the structural member, and covers at least a portion of each of the elongated indentations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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providing an endovascular sealing stent-graft, which is configured to assume a radially-compressed state and a radially-expanded state, and which includes (a) a structural member, which includes a plurality of structural stent elements, and which, when the stent-graft assumes the radially-expanded state, has a generally tubular shape, and is shaped so as to define at least two elongated indentations, each of which (i) extends rostrally to a rostral end of the structural member, (ii) is tapered in a caudal direction until the indentation converges with the generally tubular shape of the structural member, (iii) has an axial length of at least 2 cm, and (iv) defines a concave surface that is open to an exterior of the stent-graft along the entire axial length of the indention, and (b) a fluid flow guide, which includes at least one biologically-compatible substantially fluid-impervious flexible sheet, and which is coupled to at least a portion of the structural member, and covers at least a portion of the elongated indentations; transvascularly introducing the stent-graft into an aorta of a human subject, in a vicinity of renal arteries of the subject, while the stent-graft is positioned in a delivery catheter in the radially-compressed state; and transitioning the stent-graft to the radially-expanded state by deploying the stent-graft from the delivery catheter in the aorta, such that two of the elongated indentations are radially aligned with the renal arteries, with rostral ends of the elongated indentations rostral to the renal arteries, respectively, and caudal ends of the elongated indentations caudal to the renal arteries, respectively. - View Dependent Claims (17, 18)
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Specification