发明名称 |
Coating systems for the controlled delivery of hydrophilic bioactive agents |
摘要 |
Described are coating systems for the controlled delivery of hydrophilic bioactive agents, for example, from implantable medical devices. The coating systems of the invention comprise (a) a polymeric basecoat layer containing one or more hydrophilic bioactive agents; and (b) an elution-controlling topcoat layer that comprises a poly(ethylene-co-vinyl acetate) copolymer. The elution rate of the hydrophilic bioactive agent can be controlled by varying the vinyl acetate concentration in the elution-controlling topcoat layer.
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申请公布号 |
US2009280155(A1) |
申请公布日期 |
2009.11.12 |
申请号 |
US20090386469 |
申请日期 |
2009.04.17 |
申请人 |
CHAPPA RALPH A;HERGENROTHER ROBERT W;WADMAN SHANNON A;WORMUTH KLAUS R |
发明人 |
CHAPPA RALPH A.;HERGENROTHER ROBERT W.;WADMAN SHANNON A.;WORMUTH KLAUS R. |
分类号 |
A61F2/02;A61F2/16;B05D3/00 |
主分类号 |
A61F2/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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