Pre-strained stent elements
AssigneeW. L. Gore & Associates, Inc.
InventorsJames D. Silverman, Olga Baykova
Life of this patent
Estimating the term…
Abstract
Various aspects of the present disclosure are directed toward apparatuses, systems and methods that include a self-expanding endoprosthesis having a reduced configuration and a deployed configuration. The self-expanding endoprosthesis may include a self-expanding stent element having an enlarged diameter and a graft component attached to at least a portion of the self-expanding stent element and having an enlarged diameter less than the enlarged diameter of the self-expanding stent element in the deployed configuration.
Claims15
A self-expanding endoprosthesis comprising:
- a self-expanding stent element with a self-deployed diameter reduced from a manufactured diameter of the self-expanding stent element, the self-expanding stent element comprising a plurality of undulations formed by a plurality of struts, the plurality of undulations defining a plurality of intradoses and a plurality of extradoses;
- a graft component with an expanded diameter and attached to the self-expanding stent element at the expanded diameter of the graft component which is less than the self-deployed diameter of the self-expanding stent element to maintain compression of the plurality of intradoses such that the self-deployed diameter of the self-expanding stent element is at least from 2% to 25% greater than the expanded diameter of the graft component;
- wherein when the self-expanding endoprosthesis is fully deployed, the self-expanding stent element continues to apply outward force against the graft component without expanding beyond the expanded diameter of the graft component.
A self-expanding endoprosthesis having a reduced configuration and a deployed configuration, the self-expanding endoprosthesis comprising:
- a self-expanding stent element having an expanded diameter, the self-expanding stent element comprising a first portion and a second portion at a different location from the first portion;
- and
- a diametric constraint having a first enlarged diameter and a second enlarged diameter different from the first enlarged diameter, the diametric constraint being coupled to the first and second portions of the self-expanding stent element, the diametric constraint being configured to constrain the first portion of the self-expanding stent element to the first enlarged diameter of the diametric constraint, and the diametric constraint being configured to constrain the second portion of the self-expanding stent element to the second enlarged diameter of the diametric constraint, the first and second enlarged diameters being less than the expanded diameter of the self-expanding stent element in the deployed configuration;
- wherein in the deployed configuration, the first and second portions of the self-expanding stent element are configured to exert a radially expansive force to the diametric constraint;
- and
- wherein the diametric constraint has a yield strength greater than the radially expansive force and is configured to radially maintain the self-expanding stent element at the first and second enlarged diameters of the diametric constraint upon application of a second radially expansive force greater than the radially expansive force of the self-expanding stent element.
A self-expanding endoprosthesis having a reduced configuration and a deployed configuration, the self-expanding endoprosthesis comprising:
- a self-expanding stent element having a manufactured diameter and an expanded diameter reduced from the manufactured diameter, the self-expanding stent element comprising a plurality of apices defining a plurality of intradoses and a plurality of extradoses;
- and
- a graft component attached to the self-expanding stent element and having an enlarged diameter less than the expanded diameter of the self-expanding stent element in the deployed configuration, the graft component attached to the self-expanding stent element at the expanded diameter of the graft component which is less than the expanded diameter of the self-expanding stent element to maintain compression of the plurality of intradoses;
- wherein the self-expanding stent element is configured to exhibit plastic strain in response to being reduced to the reduced configuration and at the deployed configuration.
Dependencies are inferred from the claim text.