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Study of Stent Deformation and Stress Developed at Different Stent Deployment Pressures

K. Basu1 P. Ghosh2 A. Chanda1
1School of Bio Science and Engineering, Jadavpur University, Kolkata, West Bengal, India
2Jadavpur University, Kolkata, West Bengal, India

A section of DS Nitinol Stent at a deployment pressure of 17 atm.

According to clinical reports, cardiovascular disease has become a major global healthcare problem. The deposition of fats, cholesterol etc. at the arterials walls causes thrombus formation leading to stenosis and arterial blockage. To tackle this, along with arterial bypass, the use of Cardiovascular Stent is considered promising and effective (in single vessel and bi vessel diseases). While initial results were satisfactory, yet the risk of Stent Failure remains high. In this study, we aim to find the effectiveness of stent deployments and their possible causes of failure. We have considered one particular design of stent and four different materials (Stainless Steel, Nitinol, Tantalum and Elgiloy) for their Finite Element Analysis. We assess their mechanical performance under different realistic deployment pressures.

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