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机械组织变化是由动脉动脉管的液体喷射喷射引起的

Lukas Andreas Glöe Schousboe^1,2, Jens Vinge Nygaard³, Søren Nielsen Skov^1,2

¹Department of Clinical Medicine, Faculty of Health, Aarhus University, Denmark.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine

|January 27, 2026

概括

大动脉管的液体喷射效应会使大动脉组织变硬,增加其储存和损失模量. 这项研究强调了优化管设计的必要性,以尽量减少心胸外科手术期间的机械冲击.

科学领域:

生物医学工程生物医学工程
心血管研究研究心血管研究
材料科学材料科学材料科学

背景情况:

心胸外科手术通常涉及心肺旁路,使用大动脉管.
液体喷射喷射的机械效应从管对大动脉组织的机械效应尚未完全理解.

研究的目的:

为了研究大动脉管液体喷射暴露对猪大动脉组织的机械影响.
为了评估最终强度的变化,模和粘弹性特性.

主要方法:

猪大动脉组织样本被暴露在来自大动脉管的连续液体喷射中4小时.
进行了单轴拉伸测试和动态机械分析 (0.55 Hz).
分析了暴露组和对照组的组织样本.

主要成果:

在终极抗拉强度或模量方面没有发现显著差异.
动态机械分析显示,暴露样品的储存模量 (44%) 和损失模量 (73%) 显著增加.
趋向于更高的tanδ表明粘弹性行为发生了变化.

结论:

来自大动脉管的液体喷射暴露显著改变了大动脉组织的粘弹性特性,使其变得更硬.
这些机械变化可能会产生临床影响,包括壁损伤和斑块不稳定.
建议优化管流量参数,以尽量减少对大动脉壁的机械冲击.

关键词:

大动脉管的大动脉管.动态机械分析机械分析这是一台心肺机器.液体喷气式喷气式喷气式喷气式喷气机械特性机械特性

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