Physical Phenomena Occurring in Modeled Cardiac Stent during Decompression Using Numerical Analysis |
| A. Śliwa, O. Bialas
Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland |
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| The work is to establish the crucial physical phenomena responsible for genuine behavior of biomedical devices using numerical analysis in virtual environment. It helps to improve biomechanical functions and allows to predicting possible complications just at the planning stage. In the paper we use physical and mathematical calculations to establish the geometry of a cardiac stent with the help of computer numeric analysis. We determinate the best shape and material for specific life tissue environment conditions and also for the most sustainable parameters for decompression in destination vein area. Our studies include aspects of geometry modelling of a cardio surgery stents with a trial decompression of the model under specific pressure, and comparison of the internal diameter widening for two material: austenitic acid resistant steel AISI 316L - the most common for this purpose, and pure cobalt. Numeric analysis is made due to the model invented in Computer Aided Design program, Solidworks. Physical phenomena registered in the material is caused by specific conditions proportional to the vein area and the pressure occurring in angioplasty balloon. The calculation made with the help of a static analysis in a range of high displacements, with linear-isotropic elastic material model leads to the conclusions. |
DOI:10.12693/APhysPolA.138.133 topics: Cardiac stents, stents, decompression, modelling |