Friction Behavior of Esophageal Mucosa Under Axial and Circumferential Extension
Friction Behavior of Esophageal Mucosa Under Axial and Circumferential Extension
复制标题
食管粘膜轴向和周向拉伸时的摩擦行为
DOI：
10.1007/s11249-018-1123-x
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发表时间：
2019-03-01
影响因子：
3.2
通讯作者：
Zhou, Z. R.
中科院分区：
文献类型：
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作者：
Lin, C. X.;Li, W.;Zhou, Z. R.
当将内窥镜输送到病变位置时，存在严重的摩擦损伤问题，很少有研究关注该问题。本文利用UMT-Ⅱ型微摩擦试验机研究了内窥镜与食管粘膜组织在不同拉伸方向上的摩擦行为。结果表明，摩擦系数和能量耗散随周向应变的增大而减小，随轴向应变的增大而增大。摩擦行为的差异与食管组织的结构和力学各向异性有关。随着法向力的增加，粘膜表面的撕裂程度逐渐增加。利多卡因能有效地减少摩擦损耗和损伤。研究结果可为内窥镜检查的安全操作和损伤控制提供基础数据。
There are serious friction damage problems that few studies have focused on when conveying endoscope to the lesion locations. In this paper, the friction behavior between endoscope and esophageal mucosa tissue which stretched in different directions was studied by using a UMT-II Micro-Tribometer. Results show that the friction coefficient and energy dissipation decreased with the increasing circumferential strain, and enhanced with the increasing axial strain. The difference in friction behaviors was related to the structural and mechanical anisotropy of the esophageal tissue. The tearing degree on the mucosal surface gradually increased with the increasing normal force. Lidocaine could effectively reduce the friction dissipation and damage. The results can provide the basic data for safety operation and damage control during endoscopy.