Method for making a covered drug-eluting stent
First Claim
Patent Images
1. A method for making a covered agent-eluting stent comprising:
- obtaining a stent having a stent body with openings formed therein;
mounting the stent onto a mandrel;
applying an agent-containing film onto the stent mounted on the mandrel to create a first subassembly;
pressing the stent and the film against one another to create a second subassembly with at least a portion of the film pressed at least partially into the openings of the stent body;
adhering the film to the stent;
removing any excess film from the second subassembly to create a stent/film combination having inner and outer surfaces;
removing the stent stent/film combination from the mandrel; and
enclosing the stent/film combination within a sleeve of porous material to create a covered agent-eluting stent.
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Accused Products
Abstract
A stent, having openings, is mounted onto a mandrel. An agent-containing film is applied onto the stent and the two are pressed against one another so that at least a portion of the film is pressed at least partially into the openings. The film is adhered to the stent. Any excess film is removed to create a stent/film combination which is removed from the mandrel and enclosed within a sleeve of porous material to create a covered agent-eluting stent.
35 Citations
21 Claims
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1. A method for making a covered agent-eluting stent comprising:
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obtaining a stent having a stent body with openings formed therein;
mounting the stent onto a mandrel;
applying an agent-containing film onto the stent mounted on the mandrel to create a first subassembly;
pressing the stent and the film against one another to create a second subassembly with at least a portion of the film pressed at least partially into the openings of the stent body;
adhering the film to the stent;
removing any excess film from the second subassembly to create a stent/film combination having inner and outer surfaces;
removing the stent stent/film combination from the mandrel; and
enclosing the stent/film combination within a sleeve of porous material to create a covered agent-eluting stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for making a covered agent-eluting stent comprising:
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obtaining a coiled stent having a stent body with openings formed therein, the stent having axially spaced-apart turns to define a generally helical gap between the turns;
mounting the stent onto a mandrel;
winding a strip of an agent-containing film onto the stent mounted on the mandrel to create a first subassembly;
pressing the stent and the film against one another to create a second subassembly with at least a portion of the film pressed at least partially into the openings of the stent body;
adhering the film to the stent;
removing any excess film from the stent to create a stent/film combination having inner and outer surfaces;
removing the stent/film combination from the mandrel;
applying a diffusion restrictor on the outer surface of the stent/film combination, said diffusion restrictor permitting passage of the agent through the diffusion restrictor at a first, therapeutic rate;
applying a diffusion barrier on the inner surface of the stent/film combination, said diffusion barrier preventing passage of the agent through the diffusion barrier at at most a second rate, the second rate being less than the first rate;
applying a bolus-creating agent-containing material on the diffusion restrictor; and
enclosing the stent/film combination with the diffusion restrictor, the bolus-creating agent-containing material and the diffusion barrier applied thereto within a sleeve of porous material to create a covered agent-eluting stent.
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Specification