Open Access

ARTICLE

A Novel Twist Deformation Model of Soft Tissue in Surgery Simulation

by Xiaorui Zhang¹, Pengpai Wang¹, Wei Sun², Norman I. Badler³

1 Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science & Technology, Nanjing 210044, China.
2 Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Nanjing University of Information Science & Technology, Nanjing 210044, China.
3 School of Engineering and Applied Science, University of Pennsylvania, Philadelph ia, 19104, United States.

* Corresponding author: Xiaorui Zhang. Email: .

Computers, Materials & Continua 2018, 55(2), 297-319. https://doi.org/10.3970/cmc.2018.01764

Abstract

Real-time performance and accuracy are two most challenging requirements in virtual surgery training. These difficulties limit the promotion of advanced models in virtual surgery, including many geometric and physical models. This paper proposes a physical model of virtual soft tissue, which is a twist model based on the Kriging interpolation and membrane analogy. The proposed model can quickly locate spatial position through Kriging interpolation method and accurately compute the force change on the soft tissue through membrane analogy method. The virtual surgery simulation system is built with a PHANTOM OMNI haptic interaction device to simulate the torsion of virtual stomach and arm, and further verifies the real-time performance and simulation accuracy of the proposed model. The experimental results show that the proposed soft tissue model has high speed and accuracy, realistic deformation, and reliable haptic feedback.

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Keywords

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