Intravascular radially expandable stent
First Claim
1. A method for making a composite stent comprising:
- (a) providing a flat wire band formed into a zig-zag pattern;
(b) applying a polymeric film to the flat wire band; and
(c) bending the band and polymeric film into a generally cylindrical shape with open proximal and distal ends.
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Accused Products
Abstract
A method for making a radially expandable stent for implantation within a body lumen having a generally cylindrical body with open proximal and distal ends, the cylindrical body comprising a plurality of metal elements joined to allow flexing of the cylindrical body along the longitudinal axis of the body whereby the stent can conform to a curved body lumen and a polymeric film applied to the cylindrical body such that it extends between the metal elements of the stent. Therapeutic substances may be incorporated within the applied film. The stent provides a biocompatible polymeric surface to contact and support a body lumen and also a flexible structure to allow the stent to conform closely to bends in a body lumen. The stent is especially useful for repairing an injury to blood vessels caused during angioplasty procedures.
219 Citations
19 Claims
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1. A method for making a composite stent comprising:
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(a) providing a flat wire band formed into a zig-zag pattern; (b) applying a polymeric film to the flat wire band; and (c) bending the band and polymeric film into a generally cylindrical shape with open proximal and distal ends. - View Dependent Claims (2, 3)
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4. A method for making a stent comprising:
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(a) providing a flat wire band formed into a zig-zag pattern; (b) attaching a polymeric film to the flat wire band; (c) attaching a therapeutic substance to at least one side of the polymeric film; and (d) bending the preform and polymeric film into a generally cylindrical shape with open proximal and distal ends. - View Dependent Claims (5, 6)
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7. A method for making a stent comprising:
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(a) depositing drug-containing microcapsules into a mold; (b) applying a solution of a polymer and a solvent into the mold into contact with the microcapsules; (c) evaporating the solvent from the polymer solution in the mold to make a polymeric film with the microcapsules bound to the film; and (d) securing the polymeric film to a stent. - View Dependent Claims (8, 9, 10)
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11. A method for making a stent comprising:
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(a) providing a metal stent having an expandable zig-zag portion; (b) providing a stretchable polymeric film; (c) placing the stent zig-zag portion into contact with the polymeric film; (c) applying a coating of a solution of the polymer and a solvent onto the contacting stent zig-zag portion and film; and (d) evaporating the solvent from the polymer solution on the stent zig-zag portion and polymeric film. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method for making a stent comprising:
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(a) providing a flat, elongated stent preform having an expandable zig-zag therein; (b) attaching a stretchable polymeric film to the preform such that the polymeric film is bound to the zig-zags and matches the contour of the preform; and (d) forming the preform and polymeric film into a helix with open proximal and distal ends. - View Dependent Claims (18, 19)
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Specification