Endoprosthesis with coatings
First Claim
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1. An endoprosthesis, comprising:
- a first coating comprising a polymer, anda second coating over the first coating formed of a porous ceramic,wherein the porous ceramic has a smooth globular morphology to enhance endothelial cell growing over the second coating, the globular morphology having a series of shallow globular features and the globular features having a local maxima width of about 100 nm or less and a peak height of about 50 nm or less.
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Abstract
An endoprosthesis such as a coronary stent includes a polymeric reservoir of drug and an over coating formed of ceramic or metal for controlling elution of drag from the reservoir.
1001 Citations
22 Claims
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1. An endoprosthesis, comprising:
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a first coating comprising a polymer, and a second coating over the first coating formed of a porous ceramic, wherein the porous ceramic has a smooth globular morphology to enhance endothelial cell growing over the second coating, the globular morphology having a series of shallow globular features and the globular features having a local maxima width of about 100 nm or less and a peak height of about 50 nm or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of forming an endoprosthesis, comprising:
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forming a polymer coating on the endoprosthesis wherein the polymer coating comprises a drug, and forming a layer of porous ceramic or metal over the drug-containing polymer coating, wherein the porous ceramic has a smooth globular morphology to enhance endothelial cell growing over the porous ceramic, the globular morphology having a series of shallow globular features and the globular features having a local maxima width of about 100 nm or less and a peak height of about 50 nm or less. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An endoprosthesis, comprising:
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a first coating comprising a polymer; a second coating over the first coating, the second coating being formed of a porous ceramic having a smooth globular morphology, the globular morphology having a series of shallow globular features and the globular features having a local maxima width of about 100 nm or less and a peak height of about 50 nm or less, and a third coating under the first coating, the third coating being formed of a ceramic having a high roughness defined grain morphology.
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Specification