|本期目录/Table of Contents|

[1]常丽南,宋成利△,沈桐,等.三螺旋人工腱索结构的力学性能仿真验证[J].生物医学工程研究,2015,02:89-93.
 CHANG Linan,SONG Chengli,SHEN Tong,et al.Simulation on Mechanical Properties of Triple-helix Artificial Chordae Structure[J].Journal of Biomedical Engineering Research,2015,02:89-93.
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三螺旋人工腱索结构的力学性能仿真验证(PDF)

《生物医学工程研究》[ISSN:1006-6977/CN:61-1281/TN]

期数:
2015年02期
页码:
89-93
栏目:
出版日期:
2015-06-25

文章信息/Info

Title:
Simulation on Mechanical Properties of Triple-helix Artificial Chordae Structure
文章编号:
1672-6278 (2015)02-0089-05
作者:
常丽南1宋成利1△沈桐1梅举2戴黄栋2
1.上海理工大学 医疗器械与食品学院,教育部微创医疗器械工程研究中心,上海 200093;2.上海交通大学医学院附属新华医院 心胸外科,上海 200092
Author(s):
CHANG Linan1 SONG Chengli1 SHEN Tong1MEI Ju2 DAI Huangdong2
1.Shanghai Institute for Minimally Invasive Therapy, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093,China; 2. Cardiothoracic Surgery , Shanghai Jiaotong University Affiliated Xinhua Hospital, Shanghai 200092
关键词:
三螺旋结构人工腱索ABAQUS有限元分析心脏腱索拉伸试验
Keywords:
Triple-helix model Artificial chordae ABAQUS finite element analysis The tensile test of heart chordae tendineae
分类号:
R318
DOI:
-
文献标识码:
A
摘要:
基于真实心脏二尖瓣腱索结构,利用仿生学类比方法提出整体三螺旋人工腱索等效替代模型,应用ABAQUS对其进行模拟拉伸测试,并与真实拉伸试验下猪心二尖瓣腱索(边缘腱索、基底腱索与支撑腱索)的力学性能进行对比分析,从而验证此等效模型的可行性与有效性。结果表明:三螺旋人工腱索结构所能承受的最大应力与实际试验中的平均最大应力一致,且相应腱索种类的拉力位移曲线与试验曲线基本相符。本研究提出的三螺旋人工腱索结构接近于真实腱索特性,可缓解二尖瓣膜上应力集中现象,为人工腱索材料的结构改进指明了新方向,同时,仿真过程对有限元模拟生物软组织拉伸性能模块提供了参考价值。
Abstract:
Bionic equivalent triple-helix artificial chordae structure was estabilished based on the structure of real heart mitral valve chordae. ABAQUS was applied to simulate the tensile tests. Simulation results were analyzed and compared with real chordae (marginal、basal and strut chordae) tensile properties to vertify feasibility and correctness of model. Results showed that the maximum stress of spiral chordae was consistent with the actual average maximum stress. Besides, force displacement curves of all kinds of chordae were basically in accordance with test curves. This proposed triple-helix equivalent model is closer to the real chordae’s properties and can reduce stress concentration on mitral leaflets, which indicating a new direction to the structure improvements of artificial chordae materials and providing reference for finite element researches on soft tissue tensile properties module.

参考文献/References

备注/Memo

备注/Memo:
(收稿日期:2015-03-10)上海市科委产学研项目(11DZ1921600);上海理工大学微创励志创新基金资助项目(JWCXSL1402)通信作者Email:csong@usst.edu.cn
更新日期/Last Update: 2016-08-09