An anisotropic constitutive model for immersogeometric fluid–structure interaction analysis of bioprosthetic heart valves
نویسندگان
چکیده
منابع مشابه
A framework for designing patient-specific bioprosthetic heart valves using immersogeometric fluid-structure interaction analysis.
Numerous studies have suggested that medical image derived computational mechanics models could be developed to reduce mortality and morbidity due to cardiovascular diseases by allowing for patient-specific surgical planning and customized medical device design. In this work, we present a novel framework for designing prosthetic heart valves using a parametric design platform and immersogeometr...
متن کاملComparative hydrodynamic evaluation of bioprosthetic heart valves.
BACKGROUND AND AIM OF STUDY Pressure gradients across cardiac valve prostheses have been identified as one of the most important performance measures in valve replacement surgery. Specifically in aortic valves, these gradients influence reduction of left ventricular hypertrophy and are postulated to influence long-term survival. The correct choice of replacement valve is hampered by a lack of u...
متن کاملA nonlinear anisotropic model for porcine aortic heart valves.
The anisotropic property of porcine aortic valve leaflet has potentially significant effects on its mechanical behaviour and the failure mechanisms. However, due to its complex nature, testing and modelling the anisotropic porcine aortic valves remains a continuing challenge to date. This study has developed a nonlinear anisotropic finite element model for porcine heart valves. The model is bas...
متن کاملTranscatheter valve-in-valve implantation for failed bioprosthetic heart valves.
BACKGROUND The majority of prosthetic heart valves currently implanted are tissue valves that can be expected to degenerate with time and eventually fail. Repeat cardiac surgery to replace these valves is associated with significant morbidity and mortality. Transcatheter heart valve implantation within a failed bioprosthesis, a "valve-in-valve" procedure, may offer a less invasive alternative. ...
متن کاملAn anisotropic tertiary creep damage constitutive model for anisotropic materials
When an anisotropic material is subject to creep conditions and a complex state of stress, an anisotropic creep damage behavior is observed. Previous research has focused on the anisotropic creep damage behavior of isotropic materials but few constitutive models have been developed for anisotropic creeping solids. This paper describes the development of a new anisotropic tertiary creep damage c...
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ژورنال
عنوان ژورنال: Journal of Biomechanics
سال: 2018
ISSN: 0021-9290
DOI: 10.1016/j.jbiomech.2018.04.012