Finite element modelling for soft tissues surgery based on nonlinear elasticity behaviour

Immediate post-operative procedure for identification of the rheological parameters of biological soft tissue

“…These anatomical and experimental data were introduced in a three-dimensional finite element software (V Surgeon 3) developed in the laboratory [7]. It is based on a step-by-step resolution scheme which is suitable for modelling complex material behaviours and large deformation for any mechanical loading.…”

Détermination expérimentale des lois de comportement mécanique du placenta

“…Cette pince d'indentation, de forme rectangulaire, comporte une butée manuelle pour calibrer un enfoncement constant, une surface plane comme support des échantillons placentaires et un système informatique relié aux capteurs de pression pour enregistrer les données recueillies [4] (dispositif représenté sur la Fig. 1).…”

Finite element modeling for soft tissue surgery based on linear and nonlinear elasticity behavior

“…We then identified the best fit parameters for the different models by selecting the ones that led to computed measurable quantities (such as force versus displacement) that were close to the experimental ones under the same conditions ( Figure 2). To obtain the most accurate results, the associated mechanical test should be as close as possible to classical surgical solicitations [7,8]. The one selected here is an indentation test.…”