拉伸法测Mersilk缝合线的力学性能-《中国医学物理学杂志》

文章信息/Info

Title:: Mechanical properties of Mersilk suture measured by stretching method

Author(s):: LIU Xiaoli; YUAN Xiaoyan; NIU Xiaodong; Department of Basic Medicine, Changzhi Medical College, Changzhi 046000, China

Keywords:: stretching method; suture; stress-strain curve; mechanical property

摘要:: 为了获得非吸收性Mersilk缝合线的力学性能，用JCD3型读数显微镜代替JC10型读数显微镜改进了FD-YC-II型杨氏模量测定仪，利用拉伸法测量1-0型Mersilk缝合线在加载、卸载时的轴向伸长量，得到了拉伸Mersilk缝合线的应力-应变曲线与滞后回线，测得Mersilk缝合线直径为（0.372±0.003） mm、拉伸强度为（320.87±4.64） MPa、断裂伸长率为（11.91±0.11）%、杨氏模量为（65.91±0.88） MPa，并测定了应力-应变滞后回线。实验结果表明，用FD-YC-II型杨氏模量测定仪测定手术缝合线力学性能的实验方法简单、结果可靠，可以为医学临床应用提供数据参考，也可用于医学物理实验教学。

Abstract:: In order to obtain the mechanical properties of non-absorbable Mersilk suture, FD-YC-II Young’s modulus tester is improved by replacing JC10 reading microscope with JCD3 reading microscope. The axial elongations of Mersilk suture of 1-0 type under loading and unloading are measured by stretching method, so as to obtain the stress- strain curve and hysteresis loop of Mersilk suture. The experiment shows that the diameter, tensile strength and elongation at break of Mersilk suture are (0.372±0.003) mm, (320.87±4.64) MPa and (11.91±0.11)%, respectively; and that Young’s modulus is (65.91±0.88) MPa. Moreover, stress- strain hysteresis loop is determined in the experiment. Using FD-YC-II Young’s modulus tester for the determination of mechanical properties of Mersilk suture is very simple and the obtained result is reliable. The proposed method can be used to provide data reference for clinical application, and can also be used in college physics experiment teaching.