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Numerical simulation of Nitinol peripheral stents: from laser-cutting to deployment in a patient specific anatomy

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Abstract
The current clinical trend is to use percutaneous techniques, exploiting Nitinol self-expanding stents, to treat peripheral occluded vessels such as carotid or superficial femoral arteries. Although this class of stents addresses the biomechanical requirements (i.e. flexibility, kink resistance, etc.), it has been observed that many of these stents implanted in peripheral vessels are fractured. Numerical simulations have shown to be very useful in the investigation and optimization of stents and also to provide novel insights into fatigue/fracture mechanics. To date most finite element based stent simulations are performed in a straight simplified anatomy and neglect the actual deployment process; consequently there is a need for more realistic simulations taking into account the different stages of the stent design process and the insertion in the target anatomy into account. This study proposes a virtual framework to analyze numerically Nitinol stents from the laser-cutting stage to the deployment in a (patient specific) tortuous anatomy.
Keywords
IMPACT, DESIGN, FINITE-ELEMENT-ANALYSIS, SHAPE-MEMORY ALLOYS, SUPERELASTIC BEHAVIOR, MECHANICS

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MLA
Conti, Michele et al. “Numerical Simulation of Nitinol Peripheral Stents: From Laser-cutting to Deployment in a Patient Specific Anatomy.” ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS. Ed. P Sittner et al. Coutaboeuf, France: EDP Sciences, 2009. Print.
APA
Conti, M., Auricchio, F., De Beule, M., & Verhegghe, B. (2009). Numerical simulation of Nitinol peripheral stents: from laser-cutting to deployment in a patient specific anatomy. In P. Sittner, V. Paidar, L. Heller, & H. Seiner (Eds.), ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS. Presented at the 8th European Symposium on Martensitic Transformations (ESOMAT 2009), Coutaboeuf, France: EDP Sciences.
Chicago author-date
Conti, Michele, Ferdinando Auricchio, Matthieu De Beule, and Benedict Verhegghe. 2009. “Numerical Simulation of Nitinol Peripheral Stents: From Laser-cutting to Deployment in a Patient Specific Anatomy.” In ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS, ed. P Sittner, V Paidar, L Heller, and H Seiner. Coutaboeuf, France: EDP Sciences.
Chicago author-date (all authors)
Conti, Michele, Ferdinando Auricchio, Matthieu De Beule, and Benedict Verhegghe. 2009. “Numerical Simulation of Nitinol Peripheral Stents: From Laser-cutting to Deployment in a Patient Specific Anatomy.” In ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS, ed. P Sittner, V Paidar, L Heller, and H Seiner. Coutaboeuf, France: EDP Sciences.
Vancouver
1.
Conti M, Auricchio F, De Beule M, Verhegghe B. Numerical simulation of Nitinol peripheral stents: from laser-cutting to deployment in a patient specific anatomy. In: Sittner P, Paidar V, Heller L, Seiner H, editors. ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS. Coutaboeuf, France: EDP Sciences; 2009.
IEEE
[1]
M. Conti, F. Auricchio, M. De Beule, and B. Verhegghe, “Numerical simulation of Nitinol peripheral stents: from laser-cutting to deployment in a patient specific anatomy,” in ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS, Prague, Czech Republic, 2009.
@inproceedings{991198,
  abstract     = {The current clinical trend is to use percutaneous techniques, exploiting Nitinol self-expanding stents, to treat peripheral occluded vessels such as carotid or superficial femoral arteries. Although this class of stents addresses the biomechanical requirements (i.e. flexibility, kink resistance, etc.), it has been observed that many of these stents implanted in peripheral vessels are fractured. Numerical simulations have shown to be very useful in the investigation and optimization of stents and also to provide novel insights into fatigue/fracture mechanics. To date most finite element based stent simulations are performed in a straight simplified anatomy and neglect the actual deployment process; consequently there is a need for more realistic simulations taking into account the different stages of the stent design process and the insertion in the target anatomy into account. This study proposes a virtual framework to analyze numerically Nitinol stents from the laser-cutting stage to the deployment in a (patient specific) tortuous anatomy.},
  articleno    = {06008},
  author       = {Conti, Michele and Auricchio, Ferdinando and De Beule, Matthieu and Verhegghe, Benedict},
  booktitle    = {ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS},
  editor       = {Sittner, P and Paidar, V and Heller, L and Seiner, H},
  isbn         = {9782759804801},
  keywords     = {IMPACT,DESIGN,FINITE-ELEMENT-ANALYSIS,SHAPE-MEMORY ALLOYS,SUPERELASTIC BEHAVIOR,MECHANICS},
  language     = {eng},
  location     = {Prague, Czech Republic},
  pages        = {6},
  publisher    = {EDP Sciences},
  title        = {Numerical simulation of Nitinol peripheral stents: from laser-cutting to deployment in a patient specific anatomy},
  url          = {http://dx.doi.org/10.1051/esomat/200906008},
  year         = {2009},
}

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