Pulse Duplicator
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Atualização de sistema duplicador de pulsos para teste de proteses de valvulas cardiacas / Upgrade of a pulse duplicator system for cardiac valve prostheses evaluation
It has become very frequent the use of mechanic or biological cardiac valve prostheses. These prostheses must be evaluated (in vitro and in vivo tests) in order to be used clinically. The hydrodynamic performance tests are carried out in vitro. The analyses of the test results are very important for the characterizations and classification of a given prosthe
Publicado em: 2008
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2. Modelagem hidrodinamica de um mecanismo pulso duplicador
Pulse duplicators simulators are useful devices in biomedical applications. They can simulate in vitro flow phenomena related to arterial blood flow such as: stenosis, aneurysms, bifurcations, vessel elasticity among others. The purpose of this work is two-fold: develop mathematicaltools to model and analyze pulse duplicators simulators and the propose a new
Publicado em: 1994
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3. A Simple Versatile Pulse Duplicator
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4. A Mechanical Pulse Duplicator for Testing Prosthetic Mitral and Aortic Valves
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5. Principles of Fluid Mechanics Applied to Some Situations in the Human Circulation and particularly to the Testing of Valves in a Pulse Duplicator
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6. Relationship between the physical size, incompetence, and stenosis of prosthetic mitral valves
One each of 17 commercially available prosthetic mitral valves has been subjected to in vitro testing using a pulse duplicator. Measurements of mean diastolic pressure difference, incompetence, dimensions, mechanical movements, and turbulence were made, and the quality of manufacture was examined. Although most valves would be effective in the treatment of i