| 摘要 |
Extravascular implantable medical devices are described. The devices include a polymeric layer comprising a polymeric matrix and pores. Therapeutic agent is loaded in the matrix, in the pores, or in the matrix and the pores. The devices include a structural surface layer. Additional therapeutic agent may be loaded in or on the surface layer. The devices may also include one or more intermediate layer, into or onto which additional therapeutic agent may be loaded.
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