- Tytuł:
- A hybrid (hydro-numerical) circulatory model: investigations of mechanical aortic valves and a numerical valve model
- Autorzy:
-
Kozarski, M.
Suwalski, P.
Zieliński, K.
Górczyńska, K.
Szafron, B.
Pałko, K. J.
Smoczyński, R.
Darowski, M. - Powiązania:
- https://bibliotekanauki.pl/articles/202199.pdf
- Data publikacji:
- 2015
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
biological and mechanical heart valves
numerical heart valve
hybrid (hydro-numerical) circulatory model
voltage-controlled hydraulic pressure (flow) source
hydraulic input impedance
varying-elastance left ventricle - Opis:
- In most cases of diseased heart valves, they can be repaired or replaced with biological or mechanical prostheses. Biological prostheses seem to be safer than mechanical ones and are applied with good clinical outcomes. Their disadvantage, when compared with mechanical valves, is durability. In the development and application of mechanical and biological heart valves, a significant role can be played by a Hybrid (Hydro-Numerical) Circulatory Model. The aim of this paper is to demonstrate the opportunities created by the hybrid model for investigations of mechanical heart valves and their computer models under conditions similar to those of the circulatory system. A diode-resistor numerical valve model and three different design mechanical aortic valves were tested. To perform their investigations, computer applications were developed under RT LabView to be run on a PC. Static and dynamic characteristics of the valves were measured and registered - pressure in the numerical time-varying elastance left ventricle (pLV), in the aorta (pas) and flow (f), proving, among other factors, that 1) time delay of pas with respect to pLV is mainly related to the valve’s opening time, and 2) the valves of substantially different designs tested under identical hydrodynamic conditions reveal nearly the same dynamic performance.
- Źródło:
-
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 605-612
0239-7528 - Pojawia się w:
- Bulletin of the Polish Academy of Sciences. Technical Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł