走向血栓栓塞的模型:通过周动力学结构性反应和血栓失败
Abhishek Karmakar1, Greg W Burgreen2, Olivier Desjardins3
1Meining School of Biomedical Engineering, Cornell University, Ithaca, New York, USA.
International journal for numerical methods in biomedical engineering
|November 17, 2025
概括
这项研究引入了一种新的计算框架,使用周动力学 (PD) 来建模血块机制. 这种方法准确地模拟了凝块骨折和解结,推进了血栓栓塞的研究.
科学领域:
- 生物医学工程 生物医学工程
- 计算力学 计算力学 计算力学
- 材料科学 材料科学 材料科学
背景情况:
- 血栓塞栓性疾病的死亡率很高.
- 经典的计算方法难以模拟血块物理,包括在流体动力学下的生长,大变形和骨折.
- 准确的建模对于理解和治疗血栓栓塞事件至关重要.
研究的目的:
- 开发一个无网格的数值框架,使用周动力学 (PD) 来建模血块的物理.
- 为了捕捉构成性反应,损伤进展和血块失败.
- 校准PD框架以准确模拟凝块力学和解结.
主要方法:
- 开发了一个无网格数值框架,采用周动力学 (PD).
- 与基准测试案例 (拉力负荷,扭力负荷) 验证了 PD 框架,并与使用 ANSYS 的有限元分析 (FEA) 进行了比较.
- 校准的PD参数来复制机械反应,散体骨折和从人工表面 (Ti,PU,PTFE) 脱离.
主要成果:
- 该PD框架成功地捕获了构成性反应,损伤进展和血栓失败.
- 验证显示了与FEA解决方案在基准测试中的良好一致性.
- 校准的PD参数准确地复制了对凝块骨折和解的实验力位移数据.
结论:
- 开发的围动力学框架为建模血块机制提供了强大的解决方案,克服了古典方法的局限性.
- 这种计算工具可以促进对血栓栓塞的理解,并有助于开发新的治疗方法.
- 该研究证明了PD在模拟生物材料中复杂的骨折和解现象方面的潜力.
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