效应在最小侵入性皮肤穿透性髓切除术中的效应
Willian E Ito1, Dillon J Prokop2, Mario C Ito3
1Department of Urology, The University of Kansas Health System, Kansas City, KS.
Urology
|July 23, 2023
概括
在微创性皮肤穿神经切除术 (MIP) 中,效应受流体速度和设备尺寸的影响. 与神经镜相比,更大的接入直径提高了效应的有效性.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 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:
- 最少侵入性皮肤穿神经切除术 (MIP) 使用专用设备去除结石.
- 了解流体动力学,特别是效应,对于优化MIP程序至关重要.
- 设备几何和流体流动之间的相互作用影响手术结果.
研究的目的:
- 阐明控制效应的物理原理.
- 评估效应在MIP程序中的适用性.
- 调查设备尺寸如何影响 vortex 的形成和有效性.
主要方法:
- 创建了模拟MIP神经镜和接入尺寸 (15/16F和21/22F) 的烯酸幻影模型.
- 在激光照明下使用水解和气泡进行流动可视化.
- 计算流体动力学 (CFD) 模拟确定了在12.0mL/s的流速下速度和压力配置文件.
主要成果:
- 在两种模型中都观察到一个停滞点,防止液体进入收集系统幻影.
- 14毫米的外 (CSA比:0.69) 产生了显著的和高压梯度 (114.4 N/m2).
- 20毫米罩 (CSA比:0.30) 的压力梯度要小得多 (19.4 N/m2),没有明显的流.
结论:
- 流体速度和设备几何决定了压力梯度和场,从而产生了效应.
- 镜和接入之间较高的横截面积 (CSA) 比率可以在恒定流速下提高效应的有效性.
- 优化外尺寸是利用MIP程序中效应的关键.
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