632 大動脈基部の血流に関する生体外実験 : 上行大動脈の形状が血流と弁機能に及ぼす影響(G02-5 血流(2),G02 バイオエンジニアリング)

概要

論文の詳細を見る
Vascular grafting surgery using a composite graft is well known as an effective treatment for ascending aortic aneurysm. Almost all conservative grafts have shapes of straight circular tubes and the anastomosis position of coronary artery is different from that of the coronary inlet. The influence of these differences on the blood flow of coronary artery and ascending aorta and aortic valve function is not clarified. In order to understand the effect of the differences in ascending aorta geometrical shape and coronary artery anastomosis position, several realistic models of aortic valve were manufactured. In this study, we have produced modeled aortic valves using a three-dimensional modeling machine, and have investigated these effect. In this experiment, the flow volume and pressure of upstream and downstream and coronary artery was measured, and flow in the aortic root was visualized and analized by PIV. As a result, it was found that the pressure in the ascending aorta downstream a native valve model was smaller than that in the remodeling model of aortic root.
一般社団法人日本機械学会の論文
2006-09-15