通过充满液体的耳和头发细胞进行爆发传输的3D计算建模
John J Bradshaw1, Marcus A Brown1, Yijie Jiang2
1School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA.
Annals of biomedical engineering
|December 8, 2024
概括
科尔蒂器官 (OC) 的一个新的3D有限元素模型模拟了毛细胞对冲波的反应. 该模型预测了内耳受伤位置,有助于了解退伍军人的爆炸引起的听力损失.
科学领域:
- 生物工程是生物工程.
- 计算生物学 计算生物学
- 听觉神经科学 听觉神经科学
背景情况:
- 暴露于爆炸物造成听力障碍的风险很大,尤其是退伍军人.
- 对Corti (OC) 器官和耳毛细胞的损伤是爆炸引起的听力损失的主要原因.
- 耳部现有的计算模型缺乏OC的详细表示,限制了损伤预测.
研究的目的:
- 开发一个新的Corti (OC) 器官的3D有限元素 (FE) 模型.
- 模拟耳毛细胞对爆炸波暴露的反应.
- 预测爆炸过压导致的OC内部潜在的损伤部位.
主要方法:
- OC模型包括感觉细胞,膜,支持细胞和内淋巴体液.
- 从宏观耳朵模型中得出的31kPa的爆炸过压被应用为输入.
- 在时间域中使用ANSYS进行了流体结构相互作用分析.
主要成果:
- 该FE模型量化了外部毛细胞,毛束 (HBs),网状层和纹状膜 (TcM) 中的菌株和位移.
- 在HB-TcM连接处的缩应变表明潜在的脱落损伤.
- 包括间歇性流体增强了模型的现实性和准确性.
结论:
- 成功开发了OC的微尺度FE模型,以模拟爆炸超压效应.
- 这种模型有助于我们更好地了解内耳中爆炸波力学.
- 这是迈向预测爆炸引起听力损失的多尺度模型的关键一步.
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