Tensional analysis and suturing performance evaluation of the suture in corneal suturing

According to the technical requirements for the corneal suturing in cornea transplantation, a finite element model for the interaction of the SMA (shape memory alloy) suture for corneal suturing and the soft tissue of the cornea was built to explore the effect of the flexible suture on the viscoelastic cornea. Moreover, the influence of the suture tension on the maximum displacement and stress of the corneal tissue was analyzed. Subsequently, the suturing performance evaluating method for the clinical surgery with minimal trauma was put forward. The proposed suturing performance evaluating method can offer the reference information for suturing operations, which can lay a good foundation for the further research on the self-tying suture.