在低侵袭性玻璃眼手术时代的水性幽默循环
Minas T Coroneo1,2, Gabriel Graterol-Nisi3, Eric Maver4
1Ophthalmic Surgeons, 2 St Pauls St, Randwick, NSW, 2031, Australia. coroneom@gmail.com.
Annals of biomedical engineering
|December 28, 2023
概括
玻璃眼微型支架手术可以通过破坏水性幽默流动来损害角膜健康. 使用四个微支架可以最大限度地减少循环中断,模仿眼睛的自然状况,并保护长期的角膜健康.
科学领域:
- 眼科医生 眼科 眼科
- 生物医学工程 生物医学工程
- 流体动力学 流体动力学
背景情况:
- 青光眼的排水微支架可以破坏水性幽默的循环,可能会危及长期的角膜健康.
- 植入的微支架数量对水性循环动态的影响尚未完全理解.
研究的目的:
- 确定最佳数量的微支架,以最大限度地减少干扰水性幽默循环的玻璃眼手术.
- 调查微支架数量与角膜健康损害之间的关系.
主要方法:
- 使用了多个出口口的体外前眼 perfusion 模型.
- 使用ABAQUS软件的计算流体动力学 (CFD) 通过纳维埃-斯托克斯方程分析了不稳定的层流.
- 使用DT Vision Foundry分析了速度轮图和场变量 (墙面剪切,压力,速度).
主要成果:
- 一个微支架导致高流体流动和显著的"水性"停滞180°远.
- 越来越多的微支架数量指数地减少了停滞的流量位置.
- 四个微支架显示出前腔循环的最小干扰,密切模仿生理条件.
结论:
- 水性幽默停滞和高出口流量剪切应力 (特别是单一支支架) 是光眼后手术角膜妥协的关键因素.
- 传统的单出口端口方法破坏了血液循环,可能导致长期的角膜健康问题.
- 四个微支架提供了一种有前途的方法,以保持在绿眼瘤手术期间的生理水性幽默循环.
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