3D Cohesive Finite Element Minimum Invasive Surgery Simulation Based on Kelvin-Voigt Model

Abstract Minimally invasive surgery is an important technique used for cytopathological examination. Recently, multiple studies have been conducted on a three-dimensional (3D) puncture simulation model as it can reveal the internal deformation state of tissue at micro level. In this study, viscoelastic constitutive equation suitable muscle was derived. Additionally, method developed to define fracture characteristics material during process. The in contact with needle simulated using cohesive zone and 3D finite element established analyze tissue. stress nephogram reaction force under different parameters were compared analyzed study biological soft guide actual operation process reduce pain.