Drug-eluting stent cover and method of use
First Claim
1. A stent system for delivery of a therapeutic agent in a body lumen, comprising:
- an intravascular stent configured to contact the walls of the body lumen to maintain the patency of the vessel; and
a stent cover, the stent cover defining a delivery sheath fabricated from a mesh and placed over the stent, wherein the delivery sheath contains at least one therapeutic agent in sufficient quantities for the release thereof at the treatment site, wherein at least a portion of the mesh includes a predesigned pattern of individual mesh members that are circumferentially disposed around the stent in such a way that a majority of the individual members plastically deform and neck down along their longitudinal axes such that the individual members slide relative to one another in response to a radially outward directed force due to radial expansion of the stent.
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Accused Products
Abstract
An intravascular stent includes an eluting sheath fabricated from a mesh for controlled release of therapeutic drugs and for delivery of the therapeutic drugs in localized drug therapy in a blood vessel. The eluting sheath is attached to at least a portion of an outside surface area of the stent structure and is fabricated from a mesh designed to neck down in response to a radially outward directed force resulting in the uniform expansion of the stent. The eluting sheath can be loaded with at least one therapeutic drug for the release thereof at a treatment site to facilitate repair of a damaged vessel. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen.
254 Citations
37 Claims
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1. A stent system for delivery of a therapeutic agent in a body lumen, comprising:
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an intravascular stent configured to contact the walls of the body lumen to maintain the patency of the vessel; and a stent cover, the stent cover defining a delivery sheath fabricated from a mesh and placed over the stent, wherein the delivery sheath contains at least one therapeutic agent in sufficient quantities for the release thereof at the treatment site, wherein at least a portion of the mesh includes a predesigned pattern of individual mesh members that are circumferentially disposed around the stent in such a way that a majority of the individual members plastically deform and neck down along their longitudinal axes such that the individual members slide relative to one another in response to a radially outward directed force due to radial expansion of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A stent system for delivery of a therapeutic agent in a blood vessel, comprising:
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a pattern of struts interconnected to form a stent structure that contacts the walls of a body lumen to maintain the patency of the vessel; and a stent cover defining a delivery sheath fabricated from a mesh with a web pattern placed over the stent being attached to at least a portion of an outside surface area of the stent structure, the stent cover configured to cooperate with the stent to accomplish controlled and uniform expansion of the stent, wherein the stent cover is comprised of biocompatible metals and alloys. - View Dependent Claims (35, 36, 37)
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Specification