This paper covers a computational analysis of a specific stent in order to investigate the impact of strut thickness on deployment properties such as stress/strain, foreshortening, recoil, and dog boning. Congestive heart failure is one of the main causes of death in the world, claiming the lives of millions of people each year. The buildup of celluloid or calcified plaque on the artery wall prevents blood flow (stenosis), which can result in a heart attack. The most common treatment for atherosclerotic coronary heart disease is intravascular stenting. It is the simplest and fastest operation, with a high first success rate. The efficacy and life of stents are determined by stent design, stent material, and clinical technique. Strut thickness and crown radius are two important design criteria that determine how stents expand. The ideal stent is one that allows for maximum expansion while minimising stress distribution, dogboning, and elastic rebound. Five comparable stent models with thicknesses ranging from 65 to 105 were developed, and a computational method was used to replicate the stent/balloon system's transitory expansion nature. An in-vitro experiment was used to back up the FE findings. The researchers discovered that strut thickness has a significant impact on stent recoil while having a minor impact on foreshortening and dogboning. The foreshortening per unit expansion was nearly same across all models. For the model under consideration, strut thicknesses of 70 to 80 provide better expansion properties.
Author(s) Details:
V. Hashim,
Department of ME, TKM College of Engineering, Kollam, Kerala, India.
S. L. Resmi,
Department of ME, TKM College of Engineering, Kollam, Kerala, India.
Jesna Mohammed,
Department of ME, TKM College of Engineering, Kollam, Kerala, India.
A. Rajeev,
Department of Medical Devices Engineering, SCTIMST, Trivandrum, India.
Please see the link here: https://stm.bookpi.org/NPER-V7/article/view/5910
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