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Bending behaviors of fully covered biodegradable polydioxanone biliary stent for human body by finite element method.

Abstract：

:This paper presents a study of the bending flexibility of fully covered biodegradable polydioxanone biliary stents (FCBPBs) developed for human body. To investigate the relationship between the bending load and structure parameter (monofilament diameter and braid-pin number), biodegradable polydioxanone biliary stents derived from braiding method were covered with membrane prepared via electrospinning method, and nine FCBPBSs were then obtained for bending test to evaluate the bending flexibility. In addition, by the finite element method, nine numerical models based on actual biliary stent were established and the bending load was calculated through the finite element method. Results demonstrate that the simulation and experimental results are in good agreement with each other, indicating that the simulation results can be provided a useful reference to the investigation of biliary stents. Furthermore, the stress distribution on FCBPBSs was studied, and the plastic dissipation analysis and plastic strain of FCBPBSs were obtained via the bending simulation.

journal_name

J Mech Behav Biomed Mater

journal_title

Journal of the mechanical behavior of biomedical materials

authors

Liu Y,Zhu G,Yang H,Wang C,Zhang P,Han G

doi

10.1016/j.jmbbm.2017.08.023

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

157-163

eissn

1751-6161

issn

1878-0180

pii

S1751-6161(17)30366-1

journal_volume

77

pub_type

杂志文章

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