结构参数化皮肤缝合界面的平面抗拉性能研究  

Study on Plane Tensile Properties of Skin Suturing Interfaces with Structural Parameterization

作　　者：徐林龙 纪小刚 李华彬 江昊 Linlong Xu;Xiaogang Ji;Huabin Li;Hao Jiang(School of Mechanical Engineering,Jiangnan University,Wuxi,214122;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment Technology,Wuxi,214122)

机构地区：[1]江南大学机械工程学院,无锡214122 [2]江苏省食品先进制造装备技术重点实验室,无锡214122

出　　处：《固体力学学报》2024年第6期795-807,共13页Chinese Journal of Solid Mechanics

基　　金：国家自然科学基金项目(52175234,51105175);江苏省“六大人才高峰”项目(JXQC-006)资助。

摘　　要：针对临床医用粘合剂缝合皮肤创面后缝合伤口抗拉能力的可靠性问题,开展了硅胶倒模成形工艺制备的皮肤缝合界面抗拉性能研究.以四种类型缝合结构的拉伸刚度研究为主线,利用缝合界面力学理论对皮肤界面构建等效力学模型,得到预测拉伸刚度的数学模型.结合数值模拟和物理实验,聚焦分析了皮肤缝合结构的脆性破坏行为与试样失效模式.同时进一步探究了形状因子、齿尖角角度及尖端区域对界面结构抗拉特性的影响规律.研究结果表明,锯齿形结构较其他缝合结构具有显著的拉伸刚度,随着齿尖角角度增加,缝合结构刚度呈现下降趋势,且尖端区域进一步提高了缝合界面的抗拉性能,可为后续提高临床缝合术后皮肤创面愈合率提供相关参考.This study examines the tensile properties of skin suturing interfaces created through a silica gel reverse molding process,focusing on the reliability of clinical adhesive properties post-suturing.Four types of skin suturing interfaces,inspired by natural bionic structures,are designed,with primary attention on their tensile stiffness.An equivalent mechanical model is constructed using mechanical theories of suturing interfaces,and a theoretical model is developed to predict the tensile stiffness of each structure.Numerical simulations and physical experiments are conducted to analyze the brittle failure behavior and tensile failure modes of the suturing structures.The influences of shape factor,tooth tip angle,and tip region on the tensile properties of the interface are thoroughly investigated.A parameter mapping model using tensile strength as the evaluation index is constructed for each sensitive factor.It is found that the skin suturing interface exhibits brittle failure behavior,with the zigzag structure showing significantly higher tensile stiffness compared to other suturing structures.As the tooth tip angle increases,the stiffness of the suturing structure decreases,while the tip area enhances the tensile properties of the interface.These results are anticipated to help improve skin wound healing rate after clinical suturing.

关 键 词：皮肤切口 缝合界面 界面力学 抗拉性能 

分 类 号：R318[医药卫生—生物医学工程] O34[医药卫生—基础医学]