Study on the mechanical properties of sutures in the process of suturing.
10.7507/1001-5515.201711079
- Author:
Li ZHANG
1
;
An DAI
1
;
Wei LI
2
;
Zhongrong ZHOU
1
Author Information
1. Tribology Research Institute, Key Laboratory for Advanced Technology of Materials of Ministry of Education, Southwest Jiaotong University, Chengdu 610031, P.R.China.
2. Tribology Research Institute, Key Laboratory for Advanced Technology of Materials of Ministry of Education, Southwest Jiaotong University, Chengdu 610031, P.R.China.liweijiani@home.swjtu.edu.cn.
- Publication Type:Journal Article
- Keywords:
friction behavior;
relaxation;
surface morphology;
suture;
tensile
- MeSH:
Friction;
Materials Testing;
Polyglactin 910;
Polypropylenes;
Silk;
Suture Techniques;
Sutures;
Tensile Strength
- From:
Journal of Biomedical Engineering
2019;36(3):386-392
- CountryChina
- Language:Chinese
-
Abstract:
Suture broken, knot slipping and tissue tearing are the main reasons of wound closure failure in clinical operation. Based on this, we simulated the suturing and healing operation by using a biological materials testing machine and investigated the tensile properties before and after knotting, relaxation property and friction property of three common sutures: silk, polyglactin 910 and polypropylene. Results show that the tensile property decreased after knotting. The tensile strength of polyglactin 910 and elongation of polypropylene were the largest. During the relaxation process, the sutures relaxed the most in the first 2 hours. The relaxation from less to more was: polyglactin 910, silk and polypropylene. Coating or monofilament could obviously reduce the surface roughness of sutures, and thus reduce the friction force of the suture-suture interface. The friction force of the suture-suture interface increased with the increasing load but did no change with the increasing velocity. The results can provide an important theoretical basis for the optimizations of suture design and knotting operation.
