Branched stent-graft system
First Claim
1. Apparatus comprising an endovascular stent-graft, which (a) is configured to assume a radially-compressed delivery configuration and a radially-expanded deployment configuration, and (b) comprises a generally tubular hourglass-shaped body, which comprises:
- a flexible stent member, which comprises a plurality of structural stent elements; and
a tubular fluid flow guide, which comprises a fabric, and is attached to the structural stent elements,wherein, when the stent-graft is in the radially-expanded deployment configuration, the hourglass-shaped body is shaped so as to define a narrow waist portion longitudinally surrounded by and adjacent to wider first and second longitudinal portions of the hourglass-shaped body,wherein the fabric along the narrow waist portion is shaped so as to define at least first and second lateral apertures, andwherein the stent-graft, including the hourglass-shaped body, including the narrow waist portion, is configured to assume an intermediate deployment configuration, in which (a) the hourglass-shaped body is shaped so as to define the narrow waist portion surrounded by and adjacent to the wider first and second longitudinal portions, and (b) an average diameter of the narrow waist portion is at least 10% less than when the stent-graft, including the hourglass-shaped body, including the narrow waist portion, is in the radially-expanded deployment configuration.
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Accused Products
Abstract
An endovascular stent-graft (10) includes a generally tubular hourglass-shaped body (22), which is configured to assume a radially-compressed delivery configuration and a radially-expanded deployment configuration. The hourglass-shaped body (22) includes a flexible stent member (26), which includes a plurality of structural stent elements (28); and a tubular fluid flow guide (24), which includes a fabric (29), and is attached to the structural stent elements (28). The hourglass-shaped body (22) is shaped so as to define a narrow waist portion (32) longitudinally surrounded by and adjacent to wider first and second longitudinal portions (30, 34). The fabric (29) along the waist portion (32) is shaped so as to define at least first and second lateral apertures (36, 38). Other embodiments are also described.
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Citations
29 Claims
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1. Apparatus comprising an endovascular stent-graft, which (a) is configured to assume a radially-compressed delivery configuration and a radially-expanded deployment configuration, and (b) comprises a generally tubular hourglass-shaped body, which comprises:
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a flexible stent member, which comprises a plurality of structural stent elements; and a tubular fluid flow guide, which comprises a fabric, and is attached to the structural stent elements, wherein, when the stent-graft is in the radially-expanded deployment configuration, the hourglass-shaped body is shaped so as to define a narrow waist portion longitudinally surrounded by and adjacent to wider first and second longitudinal portions of the hourglass-shaped body, wherein the fabric along the narrow waist portion is shaped so as to define at least first and second lateral apertures, and wherein the stent-graft, including the hourglass-shaped body, including the narrow waist portion, is configured to assume an intermediate deployment configuration, in which (a) the hourglass-shaped body is shaped so as to define the narrow waist portion surrounded by and adjacent to the wider first and second longitudinal portions, and (b) an average diameter of the narrow waist portion is at least 10% less than when the stent-graft, including the hourglass-shaped body, including the narrow waist portion, is in the radially-expanded deployment configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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providing an endovascular stent-graft, which includes a generally tubular hourglass-shaped body, which includes (a) a flexible stent member, which includes a plurality of structural stent elements, and (b) a tubular fluid flow guide, which comprises a fabric, and is attached to the structural stent elements; transvascularly introducing the stent-graft into a blood vessel of a human subject while the stent-graft, including the hourglass-shaped body, is in a radially-compressed delivery configuration; thereafter, transitioning the stent-graft, including the hourglass-shaped body, to an intermediate deployment configuration, in which the hourglass-shaped body is shaped so as to define a narrow waist portion longitudinally surrounded by and adjacent to wider first and second longitudinal portions of the hourglass-shaped body, and the fabric along the second portion is shaped so as to define at least first and second lateral apertures; and thereafter, transitioning the stent-graft, including the hourglass-shaped body, to a radially-expanded deployment configuration in the blood vessel, in which radially-expanded configuration the hourglass-shaped body is shaped so as to define the narrow waist portion longitudinally surrounded by and adjacent to the wider first and second longitudinal portions, and the fabric along the second portion is shaped so as to define at least the first and the second lateral apertures, wherein, when the stent-graft, including the hourglass-shaped body, including the narrow waist portion, is in the intermediate deployment configuration, an average diameter of the narrow waist portion is at least 10% less than when the stent-graft, including the hourglass-shaped body, including the narrow waist portion, is in the radially-expanded deployment configuration. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification