一种新型人工机械心瓣——双叶翼型瓣的开发研究

DEVELOPMENT OF A NEW MECHANICAL ARTIFICIALHEART VALVE-BILEAFLET WITH CAMBEREDPROFILE (BLCV)

本文着重从仿生医学和血流动力学研究方面,论述了由成都科技大学及华西医科大学共同研制开发并已投入临床试用的一种新型人工机械心瓣——双叶翼型瓣。 该瓣具有两个叶片,这些叶片具有基于有铰薄翼理论设计的翼型瓣叶形状。该瓣是中心流道型,具有良好的功能仿生性及血流动力学性能。特别是,它的翼型形状,具有独特的早期关闭性能。该瓣使用了具有良好生物相容性的热解碳及类金刚石膜材料,耐久性及可靠性好,对人体没有危害。 综合分析以及实验和临床初步结果均显示出该瓣具有良好的应用前景。

<ABSTRACT> A new mechanical artificial heart valve-bi1eaflet with cambered pr- o^ile (BLCV ) developed jointly by Chengdu University of Science & Te- chnology and Western China University of Medical Sciences. This new valve has been put into clinical use for experimentation. BLCV has two leaflets devised with the hinged thin airfoi1 theory. It has a central passage flow-field and good functional bionic as well as hemodynamical property. Especially, its cambered profile shape has the property of 'early partial closure'. Testing result shows that compared with the same kind of current available materials, it has excellent per- (Continued on page 183) (Continued from page 177 ) formances of blood and tissue compatibility. It is harmless to be used in human body. All the data of theoretical analysis, numerical computations and ex- periments in vivo or in vitro show that BLCV has a better property. It would be a promising artificial heart valve replacement.