A novel in vitro method for assessing the resistance to distal displacement of endovascular stent grafts for abdominal aortic aneurysm repair

Timothy J. Corbett, A. Callanan, M. R. O'Donnell, T. M. McGloughlin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Migration of endovascular stent grafts for abdominal aortic aneurysm (AAA) is a serious complication that can result in aneurysm sac repressurisation and rupture. Secure fixation of stent-grafts in the proximal neck and the iliac legs is crucial to prevent this complication. We outline an in vitro method of investigating the resistance to migration of both a commercially available (AneuRx, Medtronic, Santa Rosa, Ca, USA) and homemade device. The devices were implanted in a silicone rubber mock AAA model and subjected to physiological pulsatile flow. The fixation strength of the AneuRx device was 8.52±0.5N and the fixation force for the homemade stent-graft was 4.62±0.25N. These results highlight the importance of longitudinal strength in devices without hooks or barbs on the proximal stent.

Original languageEnglish
Title of host publicationWorld Congress on Medical Physics and Biomedical Engineering - Surgery, Minimal Invasive Interventions, Endoscopy and Image Guided Therapy
PublisherSpringer Verlag
Pages243-246
Number of pages4
Edition6
ISBN (Print)9783642039058
DOIs
Publication statusPublished - 2009
EventWorld Congress on Medical Physics and Biomedical Engineering - Surgery, Minimal Invasive Interventions, Endoscopy and Image Guided Therapy - Munich, Germany
Duration: 7 Sep 200912 Sep 2009

Publication series

NameIFMBE Proceedings
Number6
Volume25
ISSN (Print)1680-0737

Conference

ConferenceWorld Congress on Medical Physics and Biomedical Engineering - Surgery, Minimal Invasive Interventions, Endoscopy and Image Guided Therapy
Country/TerritoryGermany
CityMunich
Period7/09/0912/09/09

Keywords

  • Abdominal aortic aneurysm
  • Endovascular repair (EVAR)
  • Stent-graft migration

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