Book ChapterDOI
Functionality of a Novel Percutaneous Aortic Valve Stent – A Fracture Mechanics Study
Gideon Praveen Kumar,Lazar Mathew +1 more
- pp 1455-1458
TLDR
In this paper, an S-N type fatigue analysis was performed on three percutaneous valve stents with Von Mises stress component having the infinite life at 1.e+008.Abstract:
To design against mechanical failure, most implants such as valve stents are assessed on the basis of survival on a long term. However, accurate investigation of the stress/ strain distributions in such valve stents, which govern their deformation and fracture behavior, is essential for their prolonged, and safe use. Nitinol, a shape-memory alloy, can “remember” a previous shape and can recover strains as high as 10% by deformation (super-elasticity) or temperature change. As such, deformation mechanisms of Nitinol are more complex than the conventional modes of plastic deformation in traditional alloys. Consequently, the mechanical behavior of Nitinol under multi-axial conditions remains poorly understood. With this background, an S-N type fatigue analysis was done on three stents with Von Mises stress component having the infinite life at 1.e+008. The results of this study may aid biomedical scientist to zero in on the material that could be used to analyse and fabricate percutaneous valve stents.read more
References
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Journal ArticleDOI
New stent design for percutaneous aortic valve replacement
TL;DR: This paper describes the design of a new vascular support structure (stent), to provide designers with estimates of the critical parameters which are essential, and Stainless steel stents are preferred to be used as balloon-expanded prostheses as they are cost-effective.
Journal ArticleDOI
Biomaterial optimization in a percutaneous aortic valve stent using finite element analysis
TL;DR: The analysis performed in this paper may aid in understanding the stent's tolerable pressure ranges in comparison with the physiological pressures exerted by the heart and cardiac blood flow during abnormal cardiovascular conditions.
Journal ArticleDOI
Finite element analysis of a percutaneous aortic valve stent design
TL;DR: The analysis performed in this paper may aid in understanding the stent’s tolerable pressures ranges in comparison with the physiological pressures exerted by the heart and cardiac blood flow during abnormal cardiovascular conditions.
Journal ArticleDOI
3D CAD Based Conceptual Design of a Novel Aortic Valve Stent
G. V. Praveen Kumar,Lazar Mathew +1 more
TL;DR: The design of vascular support structure (stents) is described to provide designers with estimates of the critical parameters which are essential to restore the functions of the endothelium of the Aorta during and after implantation without injuring it.