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 Materauthors
Liu Y,Zhu G,Yang H,Wang C,Zhang P,Han Gdoi
10.1016/j.jmbbm.2017.08.023subject
Has Abstractpub_date
2018-01-01 00:00:00pages
157-163eissn
1751-6161issn
1878-0180pii
S1751-6161(17)30366-1journal_volume
77pub_type
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