abstract |
A medical implant comprising a surface or film comprising a plurality of nanotubes having diameters of about 3 nm to about 300 nm and in a density greater than 10,000,000 nanotubes per square centimeter, wherein said nanotubes comprise a bioactive elution agent to the surrounding tissue by placement in a subject, and wherein said plurality of nanotubes further comprises a closure film that erodes providing a delayed elution of the bioactive agent. |