چكيده به لاتين
With the development of new technologies, the use of a coronary stent, a small tube-shaped medical device used to treat narrow or weakened arteries as part of a procedure called coronary intervention, is becoming increasingly popular. Various aspects such as stent design, stent wire type, mechanical properties and stent materials have different effects on stent intervention. The effects of hemodynamic behavior on stent materials have not been reported, and few numerical studies have considered the mechanical and hemodynamic effect of stent implementation. Optimal patient-specific stenting to minimize/eliminate coronary occlusion is an ambitious field of medical science and technology. Patient-specific stents are a type of stents that are designed according to the dimensions of a specific person, so it varies from person to person. With the improvement of computational simulations, it is quite useful because we can manufacture or manufacture a stent that is sized, stronger and stronger to match the specific need of the patient, not only that but it is also a cost-effective method. It is highly adaptable and a structure tested with hemodynamic results in order to match the needs of patients based on their anatomical structure. Computational simulation method to realize realistic hemodynamic and structural microenvironment model in this research provided valuable results of long-term functional knowledge of stent material behavior, which is otherwise time-consuming and expensive to determine. Finite element analysis simulation models were investigated and developed to evaluate the engineering properties that affect the functional characteristics of the stent. These characteristics are the dependence of material properties such as structural load, strain rate, radial strength, and wall stresses, which need scientific investigation. In order to understand the mechanical performance of the material (316L stainless steel and nitinol) from the mechanical performance of the stent, a finite element analysis simulation model was developed when exposed to the unfolding pressure. The mechanical analysis of the two stent mechanism models in this research may be designed Better stents help and provide a deeper understanding to support clinical cardiovascular surgeons and guide potential treatment strategies. In this study, finite element analysis was used to find the structural strength of the designed coronary stents. With the help of Abaqus software, several sample stents were created using different biocompatible materials and the finite element analysis method was used to find the most compatible/suitable biomaterials. A general comparison of all case studies shows that the behavior of stents in all cases is within the acceptable range. It is accepted.
