J022041 脳動脈瘤に対するステントによる血管拡張を考慮した血流解析([J02204]診療技術と臨床バイオメカニクス(4))

概要

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To clarify the effect of blood vessel expansion by stent implantation, we investigated the inflow to aneurysm and wall shear stress on aneurysm wall at idealized arterial bends using computational fluid dynamics. In numerous studies of stent, the blood vessel expansion by stent implantation is unconsidered. The parent blood vessel configuration of saccular aneurysm is classified into three types. We constructed the arterial bends that has changed the angle of parent artery and the diameter of parent artery in stent placement region. As results, the inflow to aneurysm has decreased in only consideration of blood vessel expansion without stent under aneurysm neck. In the inflow rate to aneurysm is greatest, we implanted stent and analyzed. The inflow to aneurysm and wall shear stress on aneurysm wall of consideration blood vessel expansion has more decrease than not consideration blood vessel expansion case. The stent treatment purpose has decrease inflow to aneurysm and wall shear stress on aneurysm wall. Therefore, the method of our result can obtain the result by more effective stent.
一般社団法人日本機械学会の論文
2011-09-11