Simulation of Interactions Between Large Soft Tissues and a Laparoscopic Grasper Using a Mesh-Less Model and Its Experimental Validation

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Saghaee Nooshabadi, Zeinab | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 45346 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Farahmand, Farzam; Narimani, Roya
Abstract:
Realistic simulation of tool-tissue interactions can help developing more effective surgical training systems and simulators. In this study we used finite element and meshless modeling approaches to simulate the grasping procedure of a large intra-abdominal organ, i.e., kidney, during laparoscopic surgery. Results indicated that the accuracy of meshless method was comparable with that of the finite element, with the RMS errors in the range of 0.8 to 3.4 mm in different directions. The computational cost of the meshless method however, was much less than that of the finite element model. In order to verify the model, a silicon sample was used with the ship kidney geometry. For determination of nodes displacement 3 cameras was used during the loading procedure. Results indicated root mean squares errors 0.40, 0.38, 0.47 between meshless method and experiment and RMS errors for finite element and experiment 0.41, 0.38 and 0.37 millimeters in different directions
Keywords:
Finite Element Method ; Meshless Method ; Laparoscopic Surgery ; Soft Tissues ; Tool-Tissue Interaction

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