A Mechanics and Bending Deformation Modeling Method of Flexible Needle Puncture Soft Tissue
A bending deformation, flexible needle technology, applied in medical simulation, informatics, medical informatics and other directions, can solve the problem of incomplete consideration of mechanical modeling, and achieve the effect of perfect and reasonable mechanical model
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[0045] The present invention proposes a method for modeling the mechanics and bending deformation of soft tissue punctured by a flexible needle, combined with the attached figure 1 , 2 As shown, a method for modeling mechanics and bending deformation of soft tissue punctured by a flexible needle is characterized in that the feeding direction of the flexible needle puncture is the positive direction of the x-axis, and the upward direction perpendicular to the x-axis is the positive direction of the y-axis. Direction, with the center of the cross-sectional circular surface at the end of the flexible needle as the origin, a rectangular coordinate system is established; the interaction force between the flexible needle and soft tissue is classified as: the end feeding force F of the flexible needle p , Clamping friction force F f , Tissue resistance F r , the cutting force F at the needle tip t and the resistive friction force F due to tissue resistance r,f and the support fri...
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