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HomeMaterials Science ForumMaterials Science Forum Vols. 773-774Effect of Material Properties on the Mechanical...

Effect of Material Properties on the Mechanical Performance of Nitinol Esophageal Stent: Finite Element Analysis

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Abstract:

Stent placement has been a main approach to treat gastrointestinal diseases during past decade. Nitinol superelastic stents have been considered as a solution to such difficulties as restenosis after implantation, low twisting ability, inadequate radial mechanical strength and inappropriate dynamic behaviors associated with the ducts. In this paper, effects of A_f temperatures on mechanical performance of z-shaped Nitinol wire stent under crimping test for clinical applications are investigated by finite element simulation. Having 60% crimping and high radial resistive strength, favorable superelastic behaviors are attained at A_f temperature of 22°C. The performance of the stent is seen to be drastically different with a mere change of 1° in the segments angle.

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Advances in Materials and Processing Technologies XV

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Periodical:

Materials Science Forum (Volumes 773-774)

Pages:

9-17

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.773-774.9

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Online since:

November 2013

Authors:

Fardin Nematzadeh*, Sayed Khatiboleslam Sadrnezhaad, A.H. Kokabi, M. Razani, A.H. Mohagheghi

Keywords:

Esophageal, Finite Element Analysis (FEA), Material Property, Mechanical Performance, Nitinol Stent

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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