Filling Model Based Soft Tissue Deformation Model

Soft tissue deformation simulation is one of the important subjects in virtual surgery, the most commonly used soft tissue deformation simulation models mainly include the Mass Spring Model and the Finite Element Model, but the traditional method does not give consideration to the real-time and authenticity. In this paper, a method of constructing soft tissue deformation simulation model based on filling model is proposed. We define a series of filling models with mass, inertia and volume characteristics. The filling model is connected by springs and the mass springs on the model surface are mixed together to form the soft tissue simulation model. It not only solves the defects of the traditional mass spring, reduces the amount of calculation in the process of virtual surgery soft deformation, but also increases the real-time performance.