Multi-component stent-graft system for implantation in a blood vessel with multiple branches
First Claim
1. Apparatus comprising a multi-component stent-graft system, which comprises:
- a first generally tubular stent-graft, which (i) when unconstrained in a radially-expanded state;
(a) defines a first lateral opening having a first lateral opening perimeter, and (b) has a first perimeter of a first end thereof that equals at least 200% of a second perimeter of a second end thereof, and (ii) is configured for positioning the first end thereof in a descending aorta, and the second end thereof in one of the branches of an aortic arch, with the first lateral opening disposed in the aortic arch facing upstream; and
a second generally tubular stent-graft, which is configured to assume a radially-expanded state, wherein the first and the second stent-grafts are configured such that the second stent-graft forms a blood-impervious seal with the first stent-graft around the first lateral opening when the second stent-graft is disposed therethrough, and the first and second stent-grafts are in their radially-expanded states.
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Accused Products
Abstract
A multi-component stent-graft system (10) comprises first, second, and third generally tubular stent-grafts (20, 22, 24), which are configured to assume radially-expanded states. The first (20) is shaped so as to define a first lateral opening (34) when radially-expanded. The second (22) is shaped so as to define a second lateral opening (44) when radially-expanded. The first and second (20, 22) are configured such that the second (22) forms a blood-impervious seal with the first (20) around the first lateral opening (34) when the second stent-graft (22) is disposed therethrough, and the first and the second (20, 22) are radially-expanded. The second and the third (22, 24) are configured such that the third (24) forms a blood-impervious seal with the second (22) around the second lateral opening (44) when the third (24) is disposed therethrough, and the second and third (22, 24) are radially-expanded. Other embodiments also described.
346 Citations
66 Claims
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1. Apparatus comprising a multi-component stent-graft system, which comprises:
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a first generally tubular stent-graft, which (i) when unconstrained in a radially-expanded state;
(a) defines a first lateral opening having a first lateral opening perimeter, and (b) has a first perimeter of a first end thereof that equals at least 200% of a second perimeter of a second end thereof, and (ii) is configured for positioning the first end thereof in a descending aorta, and the second end thereof in one of the branches of an aortic arch, with the first lateral opening disposed in the aortic arch facing upstream; anda second generally tubular stent-graft, which is configured to assume a radially-expanded state, wherein the first and the second stent-grafts are configured such that the second stent-graft forms a blood-impervious seal with the first stent-graft around the first lateral opening when the second stent-graft is disposed therethrough, and the first and second stent-grafts are in their radially-expanded states. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 22, 23, 24, 25, 26, 47, 48, 49, 50, 51, 52, 53)
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13. A method for treating a patient, comprising:
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transvascularly introducing and positioning a first stent-graft, which is shaped so as to define one or more first lateral openings having respective first lateral opening perimeters, such that (a) a proximal portion of the first stent-graft, including a proximal end of the first-stent-graft, is in an upper part of a descending aorta, (b) a distal portion of the first stent-graft, including a distal end of the first stent-graft, is in a branch of an aortic arch, and (c) one of the one or more first lateral openings is disposed within the aortic arch facing upstream, generally toward an ascending aorta; and transvascularly introducing and passing a second stent-graft through the proximal portion of the first stent-graft such that the second stent-graft is disposed through the one of the one or more first lateral openings and is disposed partially in the aortic arch, and forms a blood-impervious seal with the first stent-graft around the one of the one or more first lateral openings. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 54, 55, 56, 57, 58, 59)
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27. A method for assembling a multi-component stent-graft system, the method comprising:
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providing (a) a first generally tubular stent-graft, which (i) when unconstrained in a radially-expanded state;
(i) defines a first lateral opening having a first lateral opening perimeter, and (ii) has a first perimeter of a first end thereof that equals at least 200% of a second perimeter of a second end thereof, and (b) a second generally tubular stent-graft, and (ii) is configured for positioning the first end thereof in a descending aorta, and the second end thereof in one of the branches of an aortic arch, with the first lateral opening disposed in the aortic arch facing upstream; andwhile the first stent-graft is in its radially-expanded state and the second stent-graft is in a radially-compressed state, disposing the second stent-graft through the first lateral opening, and causing the second stent-graft to transition to a radially-expanded state, such that the second stent-graft forms a blood-impervious seal with the first stent-graft around the first lateral opening. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 60, 61, 62, 63, 64, 65, 66)
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44. Apparatus comprising a multi-component stent-graft system, which comprises:
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a first generally tubular stent-graft, which, when unconstrained in a radially-expanded state;
(a) has a first perimeter of a first end thereof that equals at least 200% of a second perimeter of a second end thereof, and (b) defines a first lateral opening having a first lateral opening perimeter that equals at least 75% of the first perimeter of the first end; anda second generally tubular stent-graft, which is configured to assume a radially-expanded state, wherein the first and the second stent-grafts are configured such that the second stent-graft forms a blood-impervious seal with the first stent-graft around the first lateral opening when the second stent-graft is disposed therethrough, and the first and second stent-grafts are in their radially-expanded states. - View Dependent Claims (45, 46)
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Specification