Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"prosthetic heart valves"”.
-
Development, testing, and evaluation of the central-flow, double- leaflet heart valve
A review of the literature revealed that 1) all prosthetic heart valves to date are plagued by certain problems, 2) all prosthetic valves in current clinical use are central-occlusion valves which do not effectively simulate natural valve action, and 3) the development of a true central-flow valve …
-
Early prototyping and testing of a model of an expandable heart valve apparatus for paediatric deployment
Valvular heart disease is any abnormal condition which involves one or more of the heart valves - the aortic and mitral valves on the left and the pulmonary and tricuspid valves on the right. Valves diseases in infants are congenital and their effect is to burden the heart with an increased work to …
-
Design and implementation of an apparatus for hydrodynamic and fatigue testing of prosthetic aortic valves
… is by either mechanical or soft tissue prosthetic valves. Before new valves are medically approved and introduced into the market they are required to undergo rigorous testing to verify performance and product life expectancy. Performance testing is done in a hydrodynamic test apparatus …
-
Vortex Dynamics and Energetics in Left Ventricular Flows
Left ventricular flows in the human heart are very complex and in the presence of a diseased condition, such as unhealthy or prosthetic heart valves, the complexity of the flow is further increased. The intricacy of the heart geometry combined with the pulsatile character of the flow, the …
-
Fatigue life modelling of anisotropic styrenic block copolymers for a prosthetic heart valve application
… has been tested for a flexible leaflet aortic prosthetic heart valve, designed to mimic the native structure of the aortic leaflet. Polymeric valves have the potential to overcome the limit of current available prosthesis, however no such valve is available clinically at present. Durability and …