LEDOUX, Yann; RAMOS, Antonio; MESNARD, Michel

Institut de Mécanique et d'Ingénierie [I2M]

RAMOS, Antonio

MESNARD, Michel

Institut de Mécanique et d'Ingénierie [I2M]

Langue

Article de revue

Ce document a été publié dans

Procedia CIRP. 2017-06-21, vol. 65, p. 273-278

Résumé en anglais

Non-fusion technology in spine surgery reduces surgical morbidity and degeneration of the adjacent levels by the insertion of dynamic spinal implants. Despite these advantages, a dynamic spinal implant (DSI) generates complications which require clinical follow-up, the continuous development of constructive solutions and structured optimization of the implant architecture using current mechanical design methods. This study structures this optimization process of a DSI concept by incorporating the mechanical behavior of the device, design variables and functional requirements into a global design model. The geometric (descriptive anatomy) and mechanical (materials, components, etc.) characteristics are obtained from a literature review. By combining these parameters, variables and requirements, appropriate values can be determined. The resulting mathematical model is then used to design and implement a device that is suitably adapted in movements and stiffness. The model assumes linear or non-linear behavior. We describe the optimization of the design variables to ensure the correct functioning of the mechanism when adapted to the patient. The optimization purpose is to determine the architecture of the implant, the choice of materials and the geometric parameters of implantation. An optimized implant model corresponding to specific degrees of degeneration in the intervertebral joint can then be envisaged.< Réduire

Mots clés en anglais

Dynamic implant

Design

Mechanical Model

Optimization

URI

https://oskar-bordeaux.fr/handle/20.500.12278/170419

Unités de recherche

Institut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295

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Optimizing the Architecture of a Dynamic Spinal Implant for Customized Mechanical Behavior

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Résumé en anglais

Mots clés en anglais

URI

Unités de recherche