Department of Mathematical Sciences, University of Liverpool, Liverpool, UK.
Liverpool Vascular & Endovascular Service, Liverpool, UK.
Sci Rep. 2017 Dec 18;7(1):17712. doi: 10.1038/s41598-017-17759-3.
Endovascular sealing is a new technique for the repair of abdominal aortic aneurysms. Commercially available in Europe since 2013, it takes a revolutionary approach to aneurysm repair through minimally invasive techniques. Although aneurysm sealing may be thought as more stable than conventional endovascular stent graft repairs, post-implantation movement of the endoprosthesis has been described, potentially leading to late complications. The paper presents for the first time a model, which explains the nature of forces, in static and dynamic regimes, acting on sealed abdominal aortic aneurysms, with references to real case studies. It is shown that elastic deformation of the aorta and of the endoprosthesis induced by static forces and vibrations during daily activities can potentially promote undesired movements of the endovascular sealing structure.
血管内封闭是一种治疗腹主动脉瘤的新技术。自 2013 年在欧洲商业化以来，它通过微创技术为动脉瘤修复带来了革命性的方法。尽管血管内封闭可能被认为比传统的血管内支架修复更稳定，但已经描述了植入后内假体的运动，可能导致晚期并发症。本文首次提出了一个模型，该模型解释了作用在密封的腹主动脉瘤上的力的性质，包括静态和动态两种状态，同时还参考了真实的案例研究。结果表明，由静态力和日常活动中的振动引起的主动脉和内假体的弹性变形可能会促进血管内封闭结构的不期望运动。
