Jiangsu Key Laboratory for Design and Manufacture of Micro Nano Biomedical Instruments Micro Technology Nanjing Co.

Nanjing, China

Jiangsu Key Laboratory for Design and Manufacture of Micro Nano Biomedical Instruments Micro Technology Nanjing Co.

Nanjing, China
SEARCH FILTERS
Time filter
Source Type

Ni X.-Y.,Nanjing Forestry University | Pan C.-W.,Jiangsu Key Laboratory for Design and Manufacture of Micro Nano Biomedical Instruments Micro Technology Nanjing Co. | Gangadhara Prusty B.,University of New South Wales
Computer Methods in Biomechanics and Biomedical Engineering | Year: 2015

This 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. © 2015, © 2014 Taylor & Francis.

Loading Jiangsu Key Laboratory for Design and Manufacture of Micro Nano Biomedical Instruments Micro Technology Nanjing Co. collaborators
Loading Jiangsu Key Laboratory for Design and Manufacture of Micro Nano Biomedical Instruments Micro Technology Nanjing Co. collaborators