ABSTRACT
In mathematics, the finite element method is a numerical technique for finding approximate solutions to boundary value problems for differential equations. Finite element analysis has been widely used for the testing and optimization of biomedical device designs for its low costs and high efficiency compared to the conventional prototype testing. The top one is a small buttress thread large-taper screw design, and the bottom one has a large buttress thread small-taper screw design. The choice of a particular type of stent design depends on the possible performance of that device in the lesion that is going to be treated. Fatigue life is another important factor of stent design. Fatigue life prediction of these devices is critical for the designer. Nitinol stents should be designed to withstand at least 380 million cycles, which is equivalent to 10 years of cyclic fatigue. The fatigue endurance is a major design requirement that could be achieved by optimizing the stent design and manufacturing process.
