Abstract:

There are concerns about the occurrence of fatigue fractures caused by stress concentrations due to different shape structures and manufacturing methods in conventional stents, and then new stents having high strength and high flexibility are required. Applicable mesh structures for medical stent applications based on the design concepts of high strength and flexibility are designed to solve various problems of conventional stents in this research. The influence of introduced design variables of basic mesh shapes on compression characteristics of meshed stent models are evaluated through finite element analysis using ANSYS Workbench. From analytical results, compressive stiffness of meshed stent models are found to be changed periodically with compressive directions due to the designed basic mesh shapes. Secondly, compressive flexibility of meshed stent models mostly depends on arm’s number and shapes of basic mesh shapes. It concluded that the compressive performance of designed meshed stent models in this study can be easily controlled by increase some design variables like angle proportional to the arm length of designed basic mesh shapes and get closed to conventional medical stents with higher strength performances.

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