Numerical comparison of the closing dynamics of a new trileaflet and a bileaflet mechanical aortic heart valve
學年 101
學期 1
出版（發表）日期 2012-12-01
作品名稱 Numerical comparison of the closing dynamics of a new trileaflet and a bileaflet mechanical aortic heart valve
作品名稱（其他語言）
著者 Li, Chi-Pei; Lu, Po-Chien
單位 淡江大學水資源及環境工程學系
出版者 Tokyo: Springer Japan KK
著錄名稱、卷期、頁數 Journal of Artificial Organs 15(4), pp.364–374
摘要 The closing velocity of the leaflets of mechanical heart valves is excessively rapid and can cause the cavitation phenomenon. Cavitation bubbles collapse and produce high pressure which then damages red blood cells and platelets. The closure mechanism of the trileaflet valve uses the vortices in the aortic sinus to help close the leaflets, which differs from that of the monoleaflet or bileaflet mechanical heart valves which mainly depends on the reverse flow. We used the commercial software program Fluent to run numerical simulations of the St. Jude Medical bileaflet valve and a new trileaflet mechanical heart valve. The results of these numerical simulations were validated with flow field experiments. The closing velocity of the trileaflet valve was clearly slower than that of the St. Jude Medical bileaflet valve, which would effectively reduce the occurrence of cavitation. The findings of this study are expected to advance the development of the trileaflet valve.
關鍵字 Cardiac Surgery; Mechanical heart valve; Valve closing dynamics; Fluid–structure interaction
語言 en_US
ISSN 1619-0904 1434-7229
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Lu, Po-Chien
審稿制度 是
國別 JPN
公開徵稿
出版型式 電子版 紙本
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