A three-dimensional analysis of a fibre-reinforced aortic valve prosthesis.

De-Hart J; Cacciola G; Schreurs PJ; Peters GW

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A three-dimensional analysis of a fibre-reinforced aortic valve prosthesis.

机译：纤维增强主动脉瓣假体的三维分析。

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摘要

Failure of synthetic heart valves is usually caused by tearing and calcification of the leaflets. It is postulated that leaflet fibre-reinforcement leads to a decrease of tears and perforations as a result of reduced stresses in the weaker parts of the leaflets. A three-dimensional finite element model of a reinforced three-leaflet valve prosthesis was developed to analyse the stress reduction. Different fibre reinforcements were investigated and the model responses were analysed for stresses that are expected to contribute to failure of fibre-reinforced valve prostheses. Results of these simulations show that, in peak stress areas of reinforced models, up to 60% of the maximum principal stresses is taken over by fibres and that, in some cases of reinforcement, a more homogeneous stress distribution is obtained.

机译：人工心脏瓣膜衰竭通常是由于小叶撕裂和钙化引起的。据推测，由于小叶较弱部分的应力减小，小叶纤维增强导致了眼泪和穿孔的减少。建立了增强型三叶瓣假体的三维有限元模型，以分析应力的降低。研究了不同的纤维增强材料，并分析了模型响应中的应力，这些应力预计会导致纤维增强的瓣膜假体失效。这些模拟结果表明，在增强模型的峰值应力区域，最大主应力的60％被纤维吸收，并且在某些增强情况下，获得了更均匀的应力分布。

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来源
《Journal of Biomechanics》 |1998年第7期|共10页
作者
De-Hart J; Cacciola G; Schreurs PJ; Peters GW;
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正文语种 eng
中图分类医用一般科学;生物力学;
关键词
Aortic Valve; Heart Valve Prosthesis; Prosthesis Design; Alkenes; Ethylenes; 主动脉瓣; 心脏瓣膜; 人工; 假体设计;

机译：Aortic Valve;Heart Valve Prosthesis;Prosthesis Design;Alkenes;Ethylenes;主动脉瓣;心脏瓣膜;人工;假体设计;

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A three-dimensional analysis of a fibre-reinforced aortic valve prosthesis.

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