Nitinol Stent Fatigue in a Peripheral Human Artery Subjected to Pulsatile and Articulation Loading
Source abstract
Abstract
Nitinol self-expanding stents are used to treat peripheral occluded vessels such as the superficial femoral artery or the carotid. The complex vessel articulation requires a stent device that is flexible and kink resistant yet durable. The present study shows how the latest advances in commercially available engineering software tools permit engineering simulations of the many aspects of the Nitinol stent design and analysis. Two stent geometries are evaluated: a helical type stent design, and a more traditional straight strut, with multiple crowns design. The fatigue performance of the two stents is compared. The results show that advanced nonlinear finite element simulations and fatigue predictions of the Nitinol stent are possible today inside realistic simulated human arteries. The finite element analysis software used in this study is SimXpert, Marc, and Mentat (MSC Software, Santa Ana, CA).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Shape Memory Alloy Transformations · Photoacoustic and Ultrasonic Imaging · Vascular Procedures and Complications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (8)
Show source-provided references
1. F. Auricchio, A Robust Integration-Algorithm for a Finite-Strain Shape-Memory-Alloy Superelastic Model, Int. J. Plast., 2001, 17, p 971–99010.1016/S0749-6419(00)00050-4 ↗
2. F. Auricchio and R.L. Taylor, Shape-Memory Alloy: Modeling and Numerical Simulations of the Finite-Strain Superelastic Behavior, Comput. Methods Appl. Mech. Eng., 1997, 143, p 175–19410.1016/S0045-7825(96)01147-4 ↗
3. C. Kleinstreuer, Z. Li, C.A. Basciano, S. Seelecke, and M.A. Farber, Computational Mechanics of Nitinol Stent Grafts, J. Biomech., 2008, 41, p 2370–237810.1016/j.jbiomech.2008.05.032 ↗
4. N.R. Dowling, Mechanical Behavior of Materials, Prentice Hall, Englewood Cliffs, NJ, 1993, p 378–380
5. R.I. Stephens, A. Fatemi, R.R. Stephens, and H.O. Fuchs, Metal Fatigue in Engineering, John Wiley & Sons, New York, 2001, p 328
6. A.R. Pelton, V. Schroeder, M.R. Mitchell, X.-Y. Gong, M. Barney, and S.W. Robertson, Fatigue and Durability of Nitinol Stents, J. Mech. Behav. Biomed. Mater., 2008, 1, p 153–16410.1016/j.jmbbm.2007.08.001 ↗
7. A.R. Pelton, X.Y. Gong, and T. Duerig, Fatigue Testing of Diamond Shaped Specimens, SMST-2003: Proceedings of the International Conference on Shape Memory and Superelastic Technologies, A.R. Pelton and T. Duerig, Ed., May 5-8, 2003, Pacific Grove, SMST Society Inc., 2004, p 293–302
8. A. Nikanorov, H.B. Smouse, K. Osman, M. Bialas, S. Shrivastava, and L.B. Schwartz, Fracture of Self-Expanding Nitinol Stents Stressed In Vitro Under Simulated Intravascular Conditions, J. Vasc. Surg., 2008, 48, p 435–44010.1016/j.jvs.2008.02.029 ↗