拉伸法测Vicryl缝合线的力学性能
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摘要
在FD-YC-II型杨氏模量测定仪的基础上,用JCD3型读数显微镜代替JC10型读数显微镜.在室温下利用拉伸法测1-0型Vicryl缝合线加载卸载时的轴向伸长量,得到了Vicryl缝合线的应力-应变曲线、拉伸强度为518.824 MPa、断裂伸长率为14.087%、屈服应力为76.8 MPa、屈服应变为1.57%,杨氏模量为81.505 MPa.最后测定了Vicryl缝合线的应力-应变滞后回线.
On the basis of FD-YC-II Young's modulus tester,JCD3 microscope is employed to instead JC10 microscope,and then by adding and reducing weight to Vicryl suture at room temperature,the axial elongation is measured by stretching method. The stress-strain curve,tensile strength 518. 824 MPa,elongation at break14.087%,yield strength 76.8 MPa,yield strain 1.57% and Young's modulus 81.505 MPa have been measured.The stress-strain hysteresis loop of Vicryl suture is also obtained.
On the basis of FD-YC-II Young's modulus tester,JCD3 microscope is employed to instead JC10 microscope,and then by adding and reducing weight to Vicryl suture at room temperature,the axial elongation is measured by stretching method. The stress-strain curve,tensile strength 518. 824 MPa,elongation at break14.087%,yield strength 76.8 MPa,yield strain 1.57% and Young's modulus 81.505 MPa have been measured.The stress-strain hysteresis loop of Vicryl suture is also obtained.
引文
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[2]Naleway SE,Lear W,Kruzic JJ,et al.Mechanical properties of suture materials in general and cutaneous surgery[J].J Biomed Mater Res B Appl Biomater,2015,103(4):735-742.
[3]何平笙.高聚物的力学性能[M].2版.合肥:中国科学技术大学出版社,2008:217-220.
[4]AE Brooks,HB Steinkraus,SR Nelson.An investigation of the divergence of major ampullate silk fibers from Nephila clavipes and Argiope aurantia[J].Biomacromolecules,2005,6(6):3095-3099.
[5]Hennessey DB,Carey E,Simms CK,et al.Torsion of monofilament and polyfilament sutures under tension decreases suture strength and increases risk of suture fracture[J].J Mech Behav Biomed Mater,2012,12(8):168-173.
[6]Chu CC.Mechanical properties of suture materials:an important characterization[J].Ann Surg,1981,193(3):365-371.
[7]Patel KA,Thomas W.Sutures,ligatures and staples[J].Surgery,2008,23(2):56-60.
[8]Ahmad Abiri,Omeed Paydar,Anna Tao,et al.Tensile strength and failure load of sutures for robotic surgery[J].Surg Endosc,2017,31(8):3258-3270.
[9]von Fraunhofer JA,Storey RS,Stone IK,et al.Tensile strength of suture materials[J].J Biomed Mater Res,1985,19(5):595-600.
[10]Holmlund DE.Physical properties of surgical suture materials:stress-strain relationship,stress-relaxation and irreversible elongation[J].Ann Surg,1976,184(2):189-193.