Abstract
Total endovascular repair of the aortic arch represents a promising option for patients ineligible to open surgery. Custom-made design of stent-grafts (SG), such as the Terumo Aortic® RelayBranch device (DB), requires complex preoperative measures. Accurate SG deployment is required to avoid intraoperative or postoperative complications, which is extremely challenging in the aortic arch. In that context, our aim is to develop a computational tool able to predict SG deployment in such highly complex situations. A patient-specific case is performed with complete deployment of the DB and its bridging stents in an aneurysmal aortic arch. Deviations of our simulation predictions from actual stent positions are estimated based on post-operative scan and a sensitivity analysis is performed to assess the effects of material parameters. Results show a very good agreement between simulations and post-operative scan, with especially a torsion effect, which is successfully reproduced by our simulation. Relative diameter, transverse and longitudinal deviations are of 3.2 ± 4.0%, 2.6 ± 2.9 mm and 5.2 ± 3.5 mm respectively. Our numerical simulations show their ability to successfully predict the DB deployment in complex anatomy. The results emphasize the potential of computational simulations to assist practitioners in planning and performing complex and secure interventions.
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Abbreviations
- BS:
-
Bridging stents
- CT:
-
Computed tomography
- DB:
-
Terumo Aortic® (formerly Bolton Medical®) RelayBranch device
- FEA:
-
Finite-element analysis
- SG:
-
Stent-graft
- TEVAR:
-
Thoracic Endovascular Aneurysm Repair
- VMTK:
-
Vascular Modeling Toolkit
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Acknowledgments
The authors would like to thank Samuel Arbefeuille, Scott Rush and Christian Fletcher from Terumo Aortic® (formerly Bolton Medical®) for their help and support in this study. Funding was provided by Agence Régionale de Santé d’Ile de France (FR).
Conflict of interest
D. Perrin, J.-N. Albertini and S. Avril are cofounders of the company Predisurge SAS. The other authors have no conflict of interest.
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Derycke, L., Perrin, D., Cochennec, F. et al. Predictive Numerical Simulations of Double Branch Stent-Graft Deployment in an Aortic Arch Aneurysm. Ann Biomed Eng 47, 1051–1062 (2019). https://doi.org/10.1007/s10439-019-02215-2
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DOI: https://doi.org/10.1007/s10439-019-02215-2