Multi-component expandable supportive bifurcated endoluminal grafts and methods for using same
First Claim
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1. A stent graft system comprising:
- a first component, which comprises a tubular structure, which comprises a first support element and a first covering element attached to said first support element, two sides of said first component being positionable, respectively, in first and second branches that branch from a main trunk of a subject, wherein said first covering element is shaped so as to define an opening arranged to face said main trunk; and
a second component, which comprises a second support element and a second covering element attached to said second support element, said second component partially disposed within said first component, extending out of said first component through said opening,wherein said second component comprises a proximal segment and a distal segment, said proximal segment being anchorably disposed within exactly one of said two sides of said first component, such that said proximal segment engages said exactly one side, and wherein said distal segment of said second component extends out of said first component through said opening, andwherein said second covering element only partially covers said second support element so as to allow blood flow to both of said two sides of said first component.
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Abstract
A multiple-component expandable endoluminal system for treating a lesion at a bifurcation including a self expandable tubular root member having a side-looking engagement aperture, a self expandable tubular trunk member comprising a substantially blood impervious polymeric liner secured therealong; both having a radially compressed state adapted for percutaneous intraluminal delivery and a radially expanded state adapted for endoluminal support.
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Citations
24 Claims
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1. A stent graft system comprising:
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a first component, which comprises a tubular structure, which comprises a first support element and a first covering element attached to said first support element, two sides of said first component being positionable, respectively, in first and second branches that branch from a main trunk of a subject, wherein said first covering element is shaped so as to define an opening arranged to face said main trunk; and a second component, which comprises a second support element and a second covering element attached to said second support element, said second component partially disposed within said first component, extending out of said first component through said opening, wherein said second component comprises a proximal segment and a distal segment, said proximal segment being anchorably disposed within exactly one of said two sides of said first component, such that said proximal segment engages said exactly one side, and wherein said distal segment of said second component extends out of said first component through said opening, and wherein said second covering element only partially covers said second support element so as to allow blood flow to both of said two sides of said first component. - 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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implanting, respectively in first and second iliac arteries that branch from an abdominal aorta of a subject, two sides of a first component of a stent graft system, which first component includes a first support element and a first covering element attached to said first support element, such that an opening defined by said first covering is aligned to face said abdominal aorta; and thereafter, implanting a second component of said system, which second component includes a second support element and a second covering attached to said second support element, by; transluminally advancing a catheter tube through one open end of exactly one of said two sides of said first component and out through the opening into the abdominal aorta, while said second component is radially compressed within said catheter tube, and withdrawing said catheter tube so that (a) at least a distal segment of said second component is freed from said catheter tube and radially expands within said abdominal aorta, and (b) thereafter, at least a proximal segment of said second component is freed from said catheter tube and radially expands within said exactly one of said two sides of said first component, thereby anchoring said at least a proximal segment of said second component to said first component, wherein said second covering element only partially covers said second support element so as to allow blood flow to both of said two sides of said first component. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification