Modèles biomécaniques pour la simulation interactive de l'accouchement

Abstract : The training to obstetrical gestures performed directly on the patient raise ethical and medico-legal problems. That is why most of the formation is based on in-situ observations. This approach can not handle all the necessary dimensions to the formation such as instrumental extraction, a good level of dexterity or the capacity to take decision in high risk situations.Simulation based training systems can address this formation problems. Neverteless, today's haptic simulators don't provide quantitative informations about the efforts undergone by pelvic organs. This informations are available only through biomechanical simulations of the foetal descent. To be used in conjunction with an haptic simulator, such simulations must be interactive.In this manuscript, first we propose a state of the art of the existing biomechanical models allowing to model the pelvic organs. After having identified the foetal head as the structure that can potentially undergo important damages during childbirth, we present a model of the foetal head based on shell finite elements CST-DKT that we extend to a co-rotationnal formulation and a volume constraint allowing to take in count the intra-cranial matter. A GPU implementation of this model is also porposed to allow interactive simulations. This model is validated on a simulation of intra-uterine pressure undergone by the foetal head during the second phase of childbirth. Finally, we propose a draft of a complete model intended to simulate interactively the feotal descent.
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  • HAL Id : tel-01158380, version 2


Mathieu Bailet. Modèles biomécaniques pour la simulation interactive de l'accouchement. Modélisation et simulation. Université Grenoble Alpes, 2014. Français. ⟨NNT : 2014GRENM100⟩. ⟨tel-01158380v2⟩



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