A Novel Haptic Interactive Approach to Simulation of Surgery Cutting Based on Mesh and Meshless Models

Author:

Cheng Qiangqiang12ORCID,Liu Peter X.34,Lai Pinhua4,Xu Shaoping4,Zou Yanni4

Affiliation:

1. School of Measuring and Optical Engineering, Nanchang Hangkong University, Nanchang, China

2. School of Information Engineering and Mechatronics Engineering, Nanchang University, Nanchang, China

3. Department of Systems and Computer Engineering, Carleton University, Ottawa, ON, Canada K1S 5B6

4. School of Information Engineering, Nanchang University, Nanchang, China

Abstract

In the present work, the majority of implemented virtual surgery simulation systems have been based on either a mesh or meshless strategy with regard to soft tissue modelling. To take full advantage of the mesh and meshless models, a novel coupled soft tissue cutting model is proposed. Specifically, the reconstructed virtual soft tissue consists of two essential components. One is associated with surface mesh that is convenient for surface rendering and the other with internal meshless point elements that is used to calculate the force feedback during cutting. To combine two components in a seamless way, virtual points are introduced. During the simulation of cutting, the Bezier curve is used to characterize smooth and vivid incision on the surface mesh. At the same time, the deformation of internal soft tissue caused by cutting operation can be treated as displacements of the internal point elements. Furthermore, we discussed and proved the stability and convergence of the proposed approach theoretically. The real biomechanical tests verified the validity of the introduced model. And the simulation experiments show that the proposed approach offers high computational efficiency and good visual effect, enabling cutting of soft tissue with high stability.

Funder

National Innovation Training Program of Nanchang University

Publisher

Hindawi Limited

Subject

Health Informatics,Biomedical Engineering,Surgery,Biotechnology

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