Endovascular grafts (EVG) are stent grafts implanted percutaneously to repair aortic aneurysms. The primary source of fixation of the EVG is the friction from radial forces generated by graft over-sizing. Although a 10–20% over-sizing is common, it may range from 0 to 45% [1]. A clinical study on patient outcomes noted high migration rates when oversizing was greater than 30%. A recent in vitro study of barbed EVGs by our group found that greater than 30% oversizing results in decreased fixation strength quantified by the force needed to pullout the graft from the aorta [2]. In that study, based on anecdotal visual observation, we hypothesized that grafts with excessive oversizing may be folding, resulting in poor fixation strength. In this study, we ranked the level of folding noted in EVGs with varying oversizing in order to test that hypothesis.
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ASME 2010 Summer Bioengineering Conference
June 16–19, 2010
Naples, Florida, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4403-8
PROCEEDINGS PAPER
Study of Folding in Endovascular Grafts due to Oversizing Available to Purchase
Kathleen Lin,
Kathleen Lin
The University of Iowa, Coralville, IA
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Madhavan L. Raghavan
Madhavan L. Raghavan
The University of Iowa, Coralville, IA
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Kathleen Lin
The University of Iowa, Coralville, IA
Madhavan L. Raghavan
The University of Iowa, Coralville, IA
Paper No:
SBC2010-19413, pp. 123-124; 2 pages
Published Online:
July 15, 2013
Citation
Lin, K, & Raghavan, ML. "Study of Folding in Endovascular Grafts due to Oversizing." Proceedings of the ASME 2010 Summer Bioengineering Conference. ASME 2010 Summer Bioengineering Conference, Parts A and B. Naples, Florida, USA. June 16–19, 2010. pp. 123-124. ASME. https://doi.org/10.1115/SBC2010-19413
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