Effect of Flow-diverter Stent on In Vitro Aneurysmal Flow (original) (raw)

The study of the intraaneurysmal flow modifications due to the use of flow diverting devices such as wire-braided stents is a subject of interest for patients, physicians and stent manufacturing companies. In fact, the necessity of preventing the cerebral aneurysm ruptures and the minimally invasive technique that Flow-Diverter stents represent lead the researchers to improve the tools implemented to demonstrate the benefits of stenting an aneurysm. This work has been carried out in two parts. One part characterizes the flow changes caused by the insertion of a stent using the Particle image velocimetry technique. The other part consists in comparing the experimental results with numerical results and highlight thereby the causes of the differences observed. For that purpose, a wire-braided stent made by the Belgian company Cardiatis was inserted inside a silicone model of an intracranial aneurysm. Different steady flow rates were applied using a peristaltic pump and a mix of water ...