Stent with drug coating
First Claim
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1. A stent comprising:
- a tubular body having a coating carrying a drug, the body including interconnected struts configured to move relative to each other, the struts forming a perimeter of the body that encircles a central passageway of the body, the struts having depots containing at least some of the coating, wherein the concentration of the drug increases along at least the perimeter, the increase in concentration being at least due to a variation in the number or size of depots among the struts forming the perimeter, wherein a thickness of the coating varies along at least a portion of the perimeter.
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Abstract
Coatings for stents that include a polymer and a drug are provided. A method of forming the coatings is also provided.
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Citations
20 Claims
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1. A stent comprising:
a tubular body having a coating carrying a drug, the body including interconnected struts configured to move relative to each other, the struts forming a perimeter of the body that encircles a central passageway of the body, the struts having depots containing at least some of the coating, wherein the concentration of the drug increases along at least the perimeter, the increase in concentration being at least due to a variation in the number or size of depots among the struts forming the perimeter, wherein a thickness of the coating varies along at least a portion of the perimeter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A stent comprising a body having a coating carrying a drug, wherein the concentration of the drug in the coating increases along at least a radial perimeter of the body of the stent, and wherein the stent comprises a reservoir region containing the drug and a barrier region disposed over the reservoir region, the thickness of the barrier region decreases along at least a portion of the radial perimeter.
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14. A stent comprising:
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a tubular body having a central passageway and a structure encircling the central passageway, the structure including depots; and a drug in the depots, the amount of the drug on a first circumferential segment of the structure being greater than the amount of the drug on a second circumferential segment of the structure, the greater amount being at least due to a variation of depots between the first circumferential segment and the second circumferential segment, wherein the first circumferential segment and the second circumferential segment are on the same plane substantially perpendicular to the central passageway. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification