Abstract
Finite element analysis is conducted to simulate deformation in a soft organ pressed with the use of a plastic tourniquet. A model liver which consists of soft hepatic tissue covered with stiffener membrane (serosa) and contains one blood vessel is considered for simulation. Deformation and stress distribution of both the liver and plastic tourniquet pressing over it are calculated in terms of a finite element code. Effect of Young's modulus and thickness of the plastic tourniquet and effect of distance between pressing points on the stress distribution and the decrease in cross-sectional area of the blood vessel are discussed. It is found that the rate of decrease in crosssectional area of the blood vessel increases with increasing Young's modulus and thickness of the tourniquet while it decreases with increasing distance between pressing points.
