A Robotic Platform for Endovascular Aneurysm Repair

International audienceAn EndoVascular Aneurysm Repair (EVAR) isa procedure used to fix an aneurysm of the aorta. In thisprocedure, a guide is inserted by the femoral artery. This guidegoes through to the height of the aneurysm and then a catheterfollows the guide. Next, a stent graft is deployed in order torepair the aortic aneurysm. The objectives of our work is todevelop a low-cost robotic system and implement a programthat helps the trajectory planning during an endovascularoperation. More precisely, this program can predict if the aortawill break or not depending on the guide used. Such a roboticplatform could serve as a teaching instrument by creating anenvironment for young surgeons in which they will be able topractice their skills to perform an EVAR. This paper describesthe different components of this platform and provides someexperimental results

A Robotic Platform for Endovascular Aneurysm Repair

International audienceAn EndoVascular Aneurysm Repair (EVAR) isa procedure used to fix an aneurysm of the aorta. In thisprocedure, a guide is inserted by the femoral artery. This guidegoes through to the height of the aneurysm and then a catheterfollows the guide. Next, a stent graft is deployed in order torepair the aortic aneurysm. The objectives of our work is todevelop a low-cost robotic system and implement a programthat helps the trajectory planning during an endovascularoperation. More precisely, this program can predict if the aortawill break or not depending on the guide used. Such a roboticplatform could serve as a teaching instrument by creating anenvironment for young surgeons in which they will be able topractice their skills to perform an EVAR. This paper describesthe different components of this platform and provides someexperimental results

A Robotic Platform for Endovascular Aneurysm Repair

International audienceAn EndoVascular Aneurysm Repair (EVAR) isa procedure used to fix an aneurysm of the aorta. In thisprocedure, a guide is inserted by the femoral artery. This guidegoes through to the height of the aneurysm and then a catheterfollows the guide. Next, a stent graft is deployed in order torepair the aortic aneurysm. The objectives of our work is todevelop a low-cost robotic system and implement a programthat helps the trajectory planning during an endovascularoperation. More precisely, this program can predict if the aortawill break or not depending on the guide used. Such a roboticplatform could serve as a teaching instrument by creating anenvironment for young surgeons in which they will be able topractice their skills to perform an EVAR. This paper describesthe different components of this platform and provides someexperimental results

In vitro assessment of abdominal aortic dissection hemodynamics based on particle image velocimetry

International audienceAortic Dissection (AD) is a condition in which the inner layer of the vessel tears causing separation between the inner and middle layers of the aorta. Blood surges into the tears, resulting in vulnerable secondary blood flow channel. Surgery consists in positioning a stent graft in the damaged area to reinforce vessel walls and redirect flow [1]. Tears, surgical tools insertion and stent graft positioning generate flow field disturbances that may influence the evolution of the disease. Many studies have investigated flow disturbances in Abdominal Aorta (AA) under healthy, dissection and post-surgical conditions with the use of AA phantom [2-4]. However, non-Newtonian behaviour is rarely investigated in such aorta phantom. The current study focuses on replicating AA non-Newtonian flow patterns in pathological and stented AA compliant phantoms.La dissection aortique est une pathologie initiée par une déchirure de la couche interne du vaisseau causant une séparation entre les couches composant la paroi de l’aorte. La pénétration du sang dans la déchirure engendre la formation d’un chenal secondaire et fragilise la paroi. Une technique de chirurgie consiste à déployer une endoprothèse au niveau de la zone endommagée afin de renforcer la paroi et de rediriger l’écoulement sanguin [1]. La déchirure, l’insertion d’outils chirurgicaux et le positionnement de l’endoprothèse sont des sources de perturbations de l’écoulement qui peuvent influencer l’évolution de la maladie. De nombreuse études ont investigué la perturbation des écoulements dans l’aorte saine, disséquée et post-chirurgie sur des fantômes vaisseaux sanguins. Néanmoins, la problématique non-newtonienne de l’écoulement est rarement traitée dans de tels modèles. Cette étude porte sur la reproduction d’écoulements non-newtoniens dans un fantôme d’aorte pathologique pré et post déploiement d’endoprothèse

IN VITRO ASSESSMENT OF ABDOMINAL AORTA NON-NEWTONIAN HEMODYNAMICS BASED ON PARTICLE IMAGE VELOCIMETRY

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