Estimation of Soft Tissue Mechanical Parameters from Robotic Manipulation Data
Identifieur interne : 001738 ( Pmc/Corpus ); précédent : 001737; suivant : 001739Estimation of Soft Tissue Mechanical Parameters from Robotic Manipulation Data
Auteurs : Pasu Boonvisut ; M. Cenk Çavu O LuSource :
- IEEE/ASME transactions on mechatronics : a joint publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division [ 1083-4435 ] ; 2013.
Abstract
Robotic motion planning algorithms used for task automation in robotic surgical systems rely on availability of accurate models of target soft tissue’s deformation. Relying on generic tissue parameters in constructing the tissue deformation models is problematic because, biological tissues are known to have very large (inter- and intra-subject) variability. A priori mechanical characterization (e.g., uniaxial bench test) of the target tissues before a surgical procedure is also not usually practical. In this paper, a method for estimating mechanical parameters of soft tissue from sensory data collected during robotic surgical manipulation is presented. The method uses force data collected from a multiaxial force sensor mounted on the robotic manipulator, and tissue deformation data collected from a stereo camera system. The tissue parameters are then estimated using an inverse finite element method. The effects of measurement and modeling uncertainties on the proposed method are analyzed in simulation. The results of experimental evaluation of the method are also presented.
Url:
DOI: 10.1109/TMECH.2012.2209673
PubMed: 24031160
PubMed Central: 3767179
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