A dissolution-diffusion model for the TAXUS drug-eluting stent with surface burst estimated from continuum percolation.

Barocas, Victor; Drasler, William; Girton, Tim; Guler, Ismail; Knapp, David; Moeller, Jeff; Parsonage, Edward · J Biomed Mater Res B Appl Biomater · 2009

basic_science · Level V

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Abstract

A two-layer dissolution-diffusion model is derived which incorporates a surface burst component that is estimated from continuum percolation models of overlapping Poisson distributed spheres. The model is shown to adequately describe the release properties of paclitaxel from a hydrophobic polymer matrix, including the surface burst and sustained release dependence on drug loading.

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