Endoprosthesis coating
First Claim
Patent Images
1. An endoprosthesis, comprising:
- a body including a ceramic coating on a surface thereof, the ceramic coating having an Sdr of about 10 or less and an Sq of about 10 or less,a tie layer covalently bonded to the ceramic coating, anda polymeric coating adhered to the tie layer.
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Accused Products
Abstract
An endoprosthesis, such as a stent, includes a chemical tie layer formed of polymer that enhance adherence of a coating, e.g. a drug eluting polymer coating, to a stent surface, e.g. made of ceramic.
980 Citations
28 Claims
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1. An endoprosthesis, comprising:
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a body including a ceramic coating on a surface thereof, the ceramic coating having an Sdr of about 10 or less and an Sq of about 10 or less, a tie layer covalently bonded to the ceramic coating, and a polymeric coating adhered to the tie layer. - View Dependent Claims (2, 3, 4, 8, 9, 10)
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5. An endoprosthesis, comprising:
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a body including a ceramic coating on a surface thereof, the ceramic coating having an Sdr of about 120 to 200 and an Sq of about 20 or more, a tie layer non-covalently adhered to the ceramic coating, and a polymeric coating adhered to the tie layer. - View Dependent Claims (6, 7, 21, 22, 23, 24)
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11. An endoprosthesis, comprising:
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a body including a ceramic coating on a surface thereof, a tie layer covalently bonded to the ceramic coating, and a polymeric coating adhered to the tie layer, wherein the polymeric coating and the ceramic coating have an adhesion increased about 50% or greater by the tie layer. - View Dependent Claims (25, 26, 27, 28)
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12. A method of forming an endoprosthesis, comprising:
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forming a ceramic and a non-ceramic, non-metal overlayer on the ceramic such that, the ceramic has an Sdr of about 10 or less, and the overlayer is covalently bonded to the ceramic, or the ceramic has an Sdr of about 100 or greater, and the overlayer is non-covalently adhered to the ceramic, or the ceramic has an Sdr between about 10 and 100 and the overlayer is non-covalently adhered or covalently bonded to the ceramic. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification