Stent-graft with fixation elements that are radially confined for delivery
First Claim
1. Apparatus comprising an endovascular stent-graft, which is configured to assume a radially-compressed delivery state and a radially-expanded deployment state, and which comprises:
- a flexible stent member, which comprises a plurality of struts, which are shaped so as to define a generally circumferential section;
a tubular fluid flow guide, which comprises a graft material, and which is attached to the stent member; and
at least one fixation member shaped so as to define a base at a first end thereof and a sharp tip at a second end thereof, wherein the base is coupled to one of the struts that are shaped so as to define the generally circumferential section,wherein, when the stent-graft is in the radially-expanded deployment state, the fixation member protrudes radially outward, andwherein, when the stent-graft is in the radially-compressed delivery state, at least a portion of the fixation member between the base and the sharp tip is convex as viewed from outside the stent-graft, such that the sharp tip points radially inward.
1 Assignment
0 Petitions
Accused Products
Abstract
An endovascular stent-graft is provided that includes a flexible stent member, which includes a plurality of struts, which are shaped so as to define a generally circumferential section; a tubular fluid flow guide, which includes a graft material, and which is attached to the stent member; and at least one fixation member shaped so as to define a base at a first end thereof and a sharp tip at a second end thereof. The base is coupled to one of the struts that are shaped so as to define the generally circumferential section. When the stent-graft is in a radially-expanded deployment state, the fixation member protrudes radially outward. When the stent-graft is in a radially-compressed delivery state, at least a portion of the fixation member between the base and the sharp tip is convex as viewed from outside the stent-graft, such that the sharp tip points radially inward.
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Citations
15 Claims
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1. Apparatus comprising an endovascular stent-graft, which is configured to assume a radially-compressed delivery state and a radially-expanded deployment state, and which comprises:
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a flexible stent member, which comprises a plurality of struts, which are shaped so as to define a generally circumferential section; a tubular fluid flow guide, which comprises a graft material, and which is attached to the stent member; and at least one fixation member shaped so as to define a base at a first end thereof and a sharp tip at a second end thereof, wherein the base is coupled to one of the struts that are shaped so as to define the generally circumferential section, wherein, when the stent-graft is in the radially-expanded deployment state, the fixation member protrudes radially outward, and wherein, when the stent-graft is in the radially-compressed delivery state, at least a portion of the fixation member between the base and the sharp tip is convex as viewed from outside the stent-graft, such that the sharp tip points radially inward. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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providing an endovascular stent-graft in a radially-expanded deployment state, which stent-graft includes (a) a flexible stent member, which includes a plurality of struts, which are shaped so as to define a generally circumferential section, (b) a tubular fluid flow guide, which includes a graft material, and which is attached to the stent member, and (c) at least one fixation member shaped so as to define a base at a first end thereof and a sharp tip at a second end thereof, wherein the base is coupled to one of the struts that are shaped so as to define the generally circumferential section, and wherein, when the stent-graft is in the deployment state, the fixation members protrudes radially outward; and loading the stent-graft into an external delivery sheath of a delivery catheter, such that the stent-graft assumes a radially-compressed delivery state, in which at least a portion of the fixation member between the base and the sharp tip is convex as viewed from outside the stent-graft, such that the sharp tip points radially inward. - View Dependent Claims (7, 8, 9, 10)
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11. A method comprising:
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providing an endovascular stent-graft, which is configured to assume a radially-compressed delivery state and a radially-expanded deployment state, and which includes (a) a flexible stent member, which includes a plurality of struts, which are shaped so as to define a generally circumferential section, (b) a tubular fluid flow guide, which includes a graft material, and which is attached to the stent member, and (c) at least one fixation member shaped so as to define a base at a first end thereof and a sharp tip at a second end thereof, wherein the base is coupled to one of the struts that are shaped so as to define the generally circumferential section; transvascularly introducing the stent-graft into a blood vessel of a human subject while the stent-graft is in the radially-compressed delivery state, in which at least a portion of the fixation member between the base and the sharp tip is convex as viewed from outside the stent-graft, such that the sharp tip points radially inward; and thereafter, transitioning the stent-graft to the radially-expanded deployment state in the blood vessel, such that the fixation member protrudes radially outwardly. - View Dependent Claims (12, 13, 14, 15)
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Specification