Twisted anchoring barb for stent of abdominal aortic aneurysm (AAA) device
First Claim
Patent Images
1. An endoluminal prosthesis device, comprising:
- a) a graft that operates as a conduit for blood; and
b) a stent coupled to said graft, said stent including at least one barb, each barb including an anchor portion and a twisted neck shape set to bias said anchor portion to rotate about an axis extending in alignment through the neck portion of the barb.
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Accused Products
Abstract
A stent is provided for an endoprosthesis having a main body portion and two leg portions, particularly suitable for treatment of an abdominal aortic aneurism. The stent includes barbs that are twisted and shaped set to point radially outward. Each barb, as formed, points substantially perpendicular relative to the longitudinal axis of the stent, even when in a non-deployed configuration. The motion to move the barb into a deployed configuration for gripping tissue is a twisting motion which moves the barb from being substantially aligned with the circumference of the stent to extending radially outwards from the stent.
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Citations
27 Claims
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1. An endoluminal prosthesis device, comprising:
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a) a graft that operates as a conduit for blood; and b) a stent coupled to said graft, said stent including at least one barb, each barb including an anchor portion and a twisted neck shape set to bias said anchor portion to rotate about an axis extending in alignment through the neck portion of the barb. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 20)
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13. A stent, comprising:
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a plurality of struts coupled together to define a tubular stent; and at least one barb coupled to said struts, said barb including an anchor portion and a neck portion shape set to bias said anchor portion to rotate about an axis extending in alignment through the neck portion of the barb. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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21. An endoluminal prosthesis, comprising:
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a) a main body including a graft and a stent having a longitudinal axis; and b) first and second leg portions coupled relative to said main body portions, wherein said stent includes at least one barb for coupling the main body portion relative to an abdominal aortic wall, each said barb including an anchor portion and a neck portion shape, said stent and barb together defining three axes, an X-axis extending tangential to a circumference of said stent, a Y-axis extending radially outward from said stent, and a Z-axis extending through said neck portion of said barb, and said neck portion is shape set biased to rotate said anchor portion about said Z-axis. - View Dependent Claims (25, 26, 27)
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22. A method of delivering a stent, comprising:
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a) providing a stent having a longitudinal axis, a circumference, and at least one barb having a neck portion and an anchor portion; b) inserting the stent into a delivery tube such that the barb is located substantially aligned with the circumference of the stent; and c) deploying the stent from the delivery tube such that the anchor portion of the barb rotates about an axis extending in alignment through the neck portion of the barb. - View Dependent Claims (23, 24)
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Specification