Abstract

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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

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.