ASCENDING AORTA STENT-GRAFT SYSTEM
First Claim
1. Apparatus comprising a generally tubular stent-graft, which has distal and proximal stent-graft ends and comprises:
- a generally tubular support element, which comprises a plurality of structural stent elements; and
a covering element that is attached to and at least partially covers the support element,wherein when the stent-graft is unconstrained in a radially-expanded state, a proximal end portion of the covering element is shaped so as to define at least first and second proximally-extending pieces,wherein when the stent-graft is unconstrained in the radially-expanded state and the proximally-extending pieces are fully proximally extended, the proximally-extending pieces;
are shaped so as to define respective distal bases, which (a) have respective base lengths measured circumferentially around the stent-graft, and (b) circumferentially circumscribe respective base arcs, each of which base arcs has an angle of between 100 and 140 degrees,are shaped so as to define respective proximal-most portions, which are more proximal than all other respective portions of the covering element that circumscribe the respective base arcs, andhave respective axial lengths, measured axially between the respective distal bases and the respective proximal-most portions, which lengths equal between 50% and 150% of the respective base lengths, andwherein when the stent-graft is unconstrained in the radially-expanded state and the proximally-extending pieces are fully proximally extended, the first and the second proximally-extending pieces are shaped so as to define respective blood-flow paths therethrough, by;
the first and the second proximally-extending pieces being shaped so as to define respective fenestrations through the covering element, each of which fenestrations has an area of at least 6 mm2, orthe first and the second proximally-extending pieces being shaped so as to define respective scallops, which have respective axial lengths measured from respective distal-most portions of the scallops to the respective proximal most-portions of the respective proximally-extending pieces, each of which axial lengths is at least 7 mm.
1 Assignment
0 Petitions
Accused Products
Abstract
A generally tubular stent-graft (20) includes a generally tubular support element (30) and a covering element (32) that is attached to and at least partially covers the support element (30). When the stent-graft (20) is unconstrained in a radially-expanded state, a proximal end portion (40) of the covering element (32) is shaped so as to define at least first and second proximally-extending pieces (42A, 42B). When the stent-graft (20) is unconstrained in the radially-expanded state and the proximally-extending pieces (42A, 42B) are fully proximally extended, the proximally-extending pieces (42A, 42B) (a) are shaped so as to define respective distal bases (46), which (i) have respective base lengths (L1) measured circumferentially around the stent-graft (20), and (ii) circumferentially circumscribe respective base arcs (a) of between 100 and 140 degrees, (b) are shaped so as to define respective proximal-most portions (48) more proximal than all other respective portions of the covering element (32) that circumscribe the respective base arcs (a), and (c) have respective axial lengths (L2) that equal between 50% and 150% of the respective base lengths (L1).
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Citations
77 Claims
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1. Apparatus comprising a generally tubular stent-graft, which has distal and proximal stent-graft ends and comprises:
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a generally tubular support element, which comprises a plurality of structural stent elements; and a covering element that is attached to and at least partially covers the support element, wherein when the stent-graft is unconstrained in a radially-expanded state, a proximal end portion of the covering element is shaped so as to define at least first and second proximally-extending pieces, wherein when the stent-graft is unconstrained in the radially-expanded state and the proximally-extending pieces are fully proximally extended, the proximally-extending pieces; are shaped so as to define respective distal bases, which (a) have respective base lengths measured circumferentially around the stent-graft, and (b) circumferentially circumscribe respective base arcs, each of which base arcs has an angle of between 100 and 140 degrees, are shaped so as to define respective proximal-most portions, which are more proximal than all other respective portions of the covering element that circumscribe the respective base arcs, and have respective axial lengths, measured axially between the respective distal bases and the respective proximal-most portions, which lengths equal between 50% and 150% of the respective base lengths, and wherein when the stent-graft is unconstrained in the radially-expanded state and the proximally-extending pieces are fully proximally extended, the first and the second proximally-extending pieces are shaped so as to define respective blood-flow paths therethrough, by; the first and the second proximally-extending pieces being shaped so as to define respective fenestrations through the covering element, each of which fenestrations has an area of at least 6 mm2, or the first and the second proximally-extending pieces being shaped so as to define respective scallops, which have respective axial lengths measured from respective distal-most portions of the scallops to the respective proximal most-portions of the respective proximally-extending pieces, each of which axial lengths is at least 7 mm. - View Dependent Claims (2, 4, 6, 7, 8, 9, 10, 11, 14, 17, 18, 19, 20, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 77)
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3. (canceled)
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5. (canceled)
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12-13. -13. (canceled)
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15-16. -16. (canceled)
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21-23. -23. (canceled)
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25. (canceled)
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35-63. -63. (canceled)
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64. A method comprising:
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providing a generally tubular stent-graft, which has distal and proximal stent-graft ends and includes;
(a) a generally tubular support element, which comprises a plurality of structural stent elements; and
(b) a covering element that is attached to and at least partially covers the support element, wherein when the stent-graft is unconstrained in a radially-expanded state, a proximal end portion of the covering element is shaped so as to define at least first and second proximally-extending pieces, and wherein when the stent-graft is unconstrained in the radially-expanded state and the proximally-extending pieces are fully proximally extended, the proximally-extending pieces;
(i) are shaped so as to define respective distal bases, which (a) have respective base lengths measured circumferentially around the stent-graft, and (b) circumferentially circumscribe respective base arcs, each of which base arcs has an angle of between 100 and 140 degrees, (ii) are shaped so as to define respective proximal-most portions, which are more proximal than all other respective portions of the covering element that circumscribe the respective base arcs, and (iii) have respective axial lengths, measured axially between the respective distal bases and the respective proximal-most portions, which lengths equal between 50% and 150% of the respective base lengths; andimplanting the stent-graft in an ascending aorta of a subject, such that (a) the proximal stent-graft end is between an aortic valve of the subject and the distal stent-graft end, and (b) the proximal-most portions of the proximally-extending pieces are positioned in respective aortic sinuses of the subject. - View Dependent Claims (65, 66, 67, 68, 69, 70, 71, 72, 73, 74)
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75-76. -76. (canceled)
Specification