Study on Plane Tensile Properties of Skin Suturing Interfaces with Structural Parameterization
This study examines the tensile properties of skin suturing interfaces created through a sili-ca 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 theo-ries of suturing interfaces,and a theoretical model is developed to predict the tensile stiffness of each struc-ture.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 mod-el 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 stiff-ness 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.
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