Publicado

2019-10-01

Fluid-structure study of a polymeric coating reinforced with carbon nanotubes (CNT) for potential application in stents

Estudio fluido-estructura de un recubrimiento polimérico reforzado con nanotubos de carbono (NTC) y su potencial aplicación en stents

Palabras clave:

fluid-structure, coating, computational study, Stent, carbon nanotubes (en)
fluido-estructura, recubrimiento, estudio computacional, Stent, nanotubos de carbono. (es)

Autores/as

The therapeutic approach of the atherosclerotic plaque has been visualized from multiple perspectives, which include from the handling of drugs until the implantation of medical devices like stents. A current alternative to restenosis appearance, is the use of stents with drugreleasing coatings. The present work seeks to analyze the structural and hemodynamic behavior and to understand the effects between the interaction of a stent coating manufactured in PVOH with and without the presence of carbon nanotubes with concentrations of CNT varying from 0.1 to 0.3% (Wt), through a computational study. The computational study is based on a Fluid-Structure (FSI) model in one way and with a scheme partitioned using the finite element method. In conclusion, predicting the mechanical behavior and local flow patterns of these devices may provide criteria elements that allow the improvement of the design of a stent coating

El abordaje terapéutico de la placa ateroesclerótica ha sido visualizado desde múltiples ángulos, que incluyen desde el manejo con fármacos hasta la implantación de dispositivos médicos como stents. Una alternativa actual a la aparición de reestenosis son stents con recubrimientos liberadores de fármacos. El presente trabajo busca analizar el comportamiento y entender los efectos entre la interacción de un recubrimiento para stent fabricado en PVOH sin la presencia y con la presencia de nanotubos de carbono con porcentajes de NTC del 0.1, al 0.3% (WT) y la hemodinámica local, mediante un estudio computacional. El estudio computacional es basado en un modelo Fluido-Estructura (FSI) en una vía y con un esquema de solución particionado utilizando el método de elementos finitos. En conclusión, predecir el comportamiento mecánico y los patrones de flujo locales de estos dispositivos, pueden proporcionar elementos de criterio que permitan el mejoramiento del diseño de un recubrimiento para stent.

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