Geometría computacional y análisis biomecánico de una intervención endovascular en aneurismas cerebrales mediante láminas delgadas de Kirchoff-Love de espesor variable
The mechanism of aneurysm rupture is still not fully understood. The rupture risk of the intervention may increase during endovascular occlusion of cerebral aneurysms due to a localized load in the parent vessel close to the neck, a common day-to-day situation. As a first attempt on the road towards...
Guardado en:
| Autores principales: | , , , |
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| Formato: | Online |
| Lenguaje: | spa |
| Publicado: |
Facultad de Ciencias Aplicadas a la Industria
2022
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| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/revicap/article/view/5993 |
| Sumario: | The mechanism of aneurysm rupture is still not fully understood. The rupture risk of the intervention may increase during endovascular occlusion of cerebral aneurysms due to a localized load in the parent vessel close to the neck, a common day-to-day situation. As a first attempt on the road towards developing a plausible analysis capable of dealing with many cases in a statistical sense, we describe the deformation kinematics using a geometrically nonlinear thin shell model under Kirchhoff-Love’s assumptions in conjunction with a simplistic Kirchhoff-St. Venant’s hyperelastic material model. Though it cannot assess the artery’s complexity, this more straightforward yet not trivial approach enables us to statistically study the application of a concentrated load in many locations, which mimics the action of an instrument during the endovascular treatment. We performed numerical simulations on 4 cases from the AneuriskWeb Database. We present preliminary results considering a smoothly varying thickness between the parent vessel and the aneurysm dome, focusing on the mesh construction process and loading.
Keywords: Intracranial aneurysms, Cerebral artery biomechanics, Computational mechanics, Mesh surface processing |
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