STUDY OF THE CLOSING MECHANISM OF NATURAL HEART VALVES

作     者：雷明 康振黄 

作者机构：Research Laboratory of Biomechanics. Department of Engineering Mechanics. Chengdu University of Science and Technology. Chengdu 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学(英文版))

年 卷 期：1986年第7卷第10期

页      面：955-964页

学科分类：07[理学] 070104[理学-应用数学] 0701[理学-数学] 

主　　题：STUDY OF THE CLOSING MECHANISM OF NATURAL HEART VALVES 

摘      要：At present, there are still some controversial considerations on the closing mechanismof natural heart valves. In this area. a lot of phenomena still remain *** the mechanism of earlier partial closure of the valve white the blood ejection is still in itsacceleration phase. It is the purpose of this study to focus on the problem of earlier closuremechanism of heart valves by using both theoretical analysis and experimentalverifications. A certain two-dimensional mathematical model of closure with allcontributing factors and the whole operating process being considered is investigated with anew analytical method Several new conclusions were found. The main points are asfollows:I. During the opening phase, the main factor of motion of the valve is the acceleratingflow, and the decelerating flow plays a main role during most the of time of the decelerationphase. But during the quasi-steady phase of blood ejection. it is the vortex in the sinus thatcontrols the valve closure.2. For Ih