The presented study details a combined experimental and computational method to assess and compare the mechanical behavior of the main body of 4 different stent graft designs. The mechanical response to a flat plate compression and radial crimping of the devices is derived and related to geometrical and material features of different stent designs. The finite element modeling procedure is used to complement the experimental results and conduct a solution sensitivity study. Finite element evaluations of the mechanical behavior match well with experimental findings and are used as a quantitative basis to discuss design characteristics of the different devices.
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http://dx.doi.org/10.1016/j.jbiomech.2013.07.010 | DOI Listing |
PLoS One
January 2025
Division of Hepatobiliary and Transplantation Surgery, Department of Surgery, Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands.
Background And Objectives: Urological complications after kidney transplantation, due to the ureteroneocystostomy, are associated with significant morbidity, prolonged hospital stay and even mortality. Ureteral stents can minimize the number of complications but are not consistently used, as previous studies were retrospective in nature. We aim to prospectively determine the most effective stenting approach.
View Article and Find Full Text PDFMultimed Man Cardiothorac Surg
January 2025
Congenital Heart Center, Division of Cardiovascular Surgery, Department of Surgery, University of Florida, Gainesville, FL, USA.
The Berlin Heart EXCOR is a pulsatile paracorporeal ventricular assist device (VAD) for neonates, infants, children and adults with congenital or acquired severe ventricular dysfunction. Berlin Heart EXCOR VADs are routinely used as either a bridge to a cardiac transplantation, or occasionally as a bridge to ventricular recovery. Our programmatic philosophy is to bridge neonates and infants with functionally univentricular ductal-dependent systemic circulation or functionally univentricular ductal-dependent pulmonary circulation who are at high risk for staged palliation because of important cardiac risk factors with a single-ventricle VAD (sVAD) as a bridge to a cardiac transplant.
View Article and Find Full Text PDFAnn Vasc Surg
January 2025
Department of for Cardiovascular Surgery, University Heart Centre Freiburg - Bad Krozingen, University Medical Centre Freiburg, Freiburg, Germany; Faculty of Medicine, Albert Ludwigs University Freiburg, Freiburg, Germany.
Objectives: To report outcomes after the use of the Omniflow II biosynthetic graft (LeMaitre Vascular, Il, USA) for vascular reconstruction in patients with prosthetic infection at the aorto-iliac and femoropopliteal level.
Methods: Within a six-year period, all consecutive patients with aorto-iliac and femoro-popliteal graft infection treated by resection of the infected graft material, extensive local debridement and reconstruction using Omniflow II biosynthetic graft were retrospectively analzyed. Patient characteristics, intraoperative details, postoperative outcomes, and infection details were assessed.
Eur J Vasc Endovasc Surg
January 2025
Aortic Center, Hôpital Marie Lannelongue, GHPSJ, Le Plessis-Robinson, France. Electronic address:
Objective: The aim of this study was to perform a comparative pre-clinical evaluation of a new fenestrated endovascular aneurysm repair dedicated stent using perfused 3D printed patient anatomies.
Methods: The test setup included a pulsatile pump set to reproduce human haemodynamics, four 3D printed pararenal aneurysms connected to a bench test, and four corresponding fenestrated grafts (Zenith Fenestrated; Cook, Bloomington, IN, USA). Bridging stents were sized based on analysis of patients computed tomography scans and included either four standard covered stents (BeGraft [BG]; Bentley, Hechingen, Germany) or four similar covered stent grafts mounted on a modified balloon to allow stent implantation and flaring in one step (BeFlared [BF]; Bentley).
J Cardiovasc Surg (Torino)
February 2025
Department of Vascular Surgery, AZ Sint Blasius, Dendermonde, Belgium.
Background: Due to the heterogeneity of literature findings, stent type selection for the endovascular treatment of complex aorto-iliac occlusive disease remains challenging. The BELSTREAM study, a physician-initiated, prospective, multicenter, single-arm study, aims to report the safety and efficacy of the balloon expandable LifeStream Peripheral Stent Graft System (BD, Tempe, Arizona, USA) for the treatment of complex TASC C and D aorto-iliac artery lesions.
Methods: Seventy patients and 133 lesions were included at six Belgian institutions.
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