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Preparation of polymeric models for dynamic simulation of aortic dissection.

机译：聚合物模型的动态模拟主动脉夹层的准备。

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We have investigated aortic dissection using models to simulate the mechanical properties, and possible failure modes related to the human circulatory system. Two approaches were used involving heat shrinkable polymers, and mechanically stretched latex tubing. Both impacting anisotropic mechanical strain as observed in real blood vessels.; Elastic and stiff polymers were used to mimic the two layers of the aortic wall. Anisotropic stress was introduced between the two polymers by pulling. The peak extension of the models was noted prior to stiff polymer coating.; An Aortic Arch mold fabricated from AutoCAD 2000 designed shaped as "J Candy Cane" was built by rapid prototyping technique.; Latex models were investigated by Dynamic Mechanical Analysis, and Pulsatile pump measurements. Combination of DMA frequency dependent data and mechanical strain data of the latex models suggest possible energy absorption mechanism which could lead to mechanical failure, possibly analogous to true aortic dissection.
机译：我们已经研究了使用模型来模拟机械特性以及与人体循环系统相关的可能失效模式的主动脉夹层。使用了两种方法，包括热收缩聚合物和机械拉伸的乳胶管。如在实际血管中所观察到的，两者都影响各向异性机械应变。弹性和刚性聚合物被用来模仿主动脉壁的两层。通过拉伸在两种聚合物之间引入各向异性应力。在刚性聚合物涂层之前，注意到模型的峰扩展。利用快速原型技术，构建了由AutoCAD 2000制造的设计为“ J Candy Cane”的主动脉弓模具。通过动态力学分析和脉动泵测量研究了乳胶模型。乳胶模型的DMA频率相关数据和机械应变数据的组合表明，可能的能量吸收机制可能导致机械故障，可能类似于真正的主动脉夹层。

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