DocumentCode :
471765
Title :
Hydrodynamic Effects of the Partial Opening of a Trileaflet Valve
Author :
Escobedo, C. ; Tovar, F. ; Vila, A. ; Garcia, J. ; Suarez, B. ; Corona, F. ; Sacristan, E.
Author_Institution :
Innovamedica S.A. de C.V., Mexico City
fYear :
2006
fDate :
Aug. 30 2006-Sept. 3 2006
Firstpage :
2896
Lastpage :
2899
Abstract :
Manufacturing process of medical grade silicon rubber trileaflet valves for VADs could propitiate important leaflet thickness variations which could result in partial opening of the valve and affect its hydrodynamic performance. The leaflets of a total of 10 valves were measured to assess its thickness variability. Two experiments were performed to asses the impact of the leaflets thickness variation under hypothetical situations. The first experiment was divided into three hypothetical cases. In each case either none, one or two leaflets of different valves were mechanically blocked, resembling possible critical working circumstances. The second experiment was intended to know how the variation on the leaflets thickness affects the hydrodynamic performance of the valves. The results demonstrated a significant variation on the leaflets thickness was found. As for the first experiment, a small variation on the hydrodynamic performance was found above 4 L/min flow rates and a slightly higher energy loss was found in one of the cases. As for the second experiment, the results showed that the variation of the leaflet thickness does not affect the general hydrodynamic performance of the valves. No relationship between the thickness variability and the hydrostatic performance of the valves was found
Keywords :
artificial organs; biomedical materials; cardiovascular system; haemodynamics; hydrodynamics; hydrostatics; manufacturing processes; rubber; energy loss; hydrodynamic effects; hydrostatic performance; leaflet thickness variability; medical grade silicon rubber trileaflet valve manufacturing process; partial trileaflet valve opening; Biomedical engineering; Biomedical measurements; Cities and towns; Heart valves; Hydrodynamics; Manufacturing processes; Rubber; Silicon; Testing; USA Councils;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Conference_Location :
New York, NY
ISSN :
1557-170X
Print_ISBN :
1-4244-0032-5
Electronic_ISBN :
1557-170X
Type :
conf
DOI :
10.1109/IEMBS.2006.260305
Filename :
4462402
Link To Document :
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