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- W2016644659 abstract "AbstractThis paper discusses various issues relating to the mechanical properties of a braided non-vascular stent made of a Ni–Ti alloy. The design of the stent is a major factor which determines its reliability after implantation into a stenosed non-vascular cavity. This paper presents the effect of the main structural parameters on the mechanical properties of braided stents. A parametric analysis of a commercial stent model is developed using the commercial finite element code ANSYS. As a consequence of the analytical results that the pitch of wire has a greater effect than other structural parameters, a new design of a variable pitch stent is presented to improve mechanical properties of these braided stents. The effect of structural parameters on mechanical properties is compared for both stent models: constant and variable pitches. When the pitches of the left and right quarters of the stent are 50% larger and 100% larger than that of the central portion, respectively, the radial stiffness in the central portion increases by 10% and 38.8%, while the radial stiffness at the end portions decreases by 128% and 164.7%, the axial elongation by 25.6% and 56.6% and the bending deflection by 3.96% and 10.15%. It has been demonstrated by finite element analysis that the variable pitch stent can better meet the clinical requirements.Keywords:: braided stentnon-vascularfinite element methodmechanical propertiesparametric analysis Additional informationFundingConflict of interest statementThere is no conflict of interest/financial disclosure.This work was financially supported by the National Natural Science Foundation of China [grant no. 51005124] and The Key Laboratory Opening Foundation of JiangSu Province [grant no. JSNB-2009-1-1]." @default.
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- W2016644659 date "2014-05-28" @default.
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- W2016644659 title "Numerical investigations of the mechanical properties of a braided non-vascular stent design using finite element method" @default.
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- W2016644659 doi "https://doi.org/10.1080/10255842.2013.873420" @default.
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