Modeling and simulation of tissue/device interaction using standard viscoelastic model

Abstract

Blood loss is a concern in the liver resections. In line with the wide implementation of ablation process, bleeding during liver resections can be minimized. However, the division process has to be accurately monitored to provide efficient liver resection in terms of time and safety. The modeling of liver tissue and division tool interaction along with the deformation of the liver tissue is studied in this research. As liver tissue is made of complex viscoelastic material, we determined that it could be modeled using standard viscoelastic model based on biomechanics experiment on fresh porcine livers. This result is further extended to incorporate a modeled division tool. Simulation of the modeled interaction is discussed. A state control feedback system which can help monitor the combined ablation and division process is also proposed. © 2008 IEEE.