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Some design considerations for polymer-free drug-eluting stents : a mathematical approach

McGinty, Sean and Vo, Tuoi T. N. and Meere, Martin and McKee, Sean and McCormick, Christopher (2015) Some design considerations for polymer-free drug-eluting stents : a mathematical approach. Acta Biomaterialia. ISSN 1742-7061

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Abstract

In this paper we provide the first model of drug elution from polymer-free arterial drug-eluting stents. The generalised model is capable of predicting the drug release from a number of polymer-free systems including those that exhibit nanoporous, nanotubular and smooth surfaces. We derive analytical solutions which allow us to easily determine the important parameters that control the drug release. Drug release profiles are provided, and we offer design recommendations so that the release profile may be tailored to achieve the desired outcome. The models presented here are not specific to drug-eluting stents and may also be applied to other biomedical implants that use nanoporous surfaces to release a drug.