TWISTED ANCHORING BARB FOR STENT OF ABDOMINAL AORTIC ANEURYSM (AAA) DEVICE
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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. (canceled)
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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