1A1-C19 Validation of Viscoelastic and Nonlinear Physical Model of Liver for Needle Insertion

Abstract

This paper shows validation of viscoelastic and nonlinear physical model of liver. In vitro experiment using biomaterial in previous works shows the nonlinear response of force loaded on the needle and the velocity dependency of needle displacement where puncture occur. The physical models of the liver were analyzed under the same conditions of in vitro experiment in order to evaluate the model. From the result of validation experiment, the developed liver model reproduces the nonlinear response of force loaded on the needle and the velocity dependency of needle displacement where puncture occur.