TY - GEN
T1 - Fluid mechanical analysis at closure of the On-X mechanical heart valve
AU - Haggerty, Christopher M.
AU - Herbertson, Luke H.
AU - Deutsch, Steven
AU - Manning, Keefe B.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - Three-dimensional laser Doppler velocimetry (LDV) was used to characterize the flow created by the On-X bileaflet mechanical heart valve (MHV) manufactured by Medical Carbon Research Institute (MCRI), Inc. (Austin, TX). The valve was mounted into a pneumatically driven single-shot chamber in the mitral position such that only the closure dynamics were simulated. Measurements taken 2 mm proximal to the valve housing showed a peak velocity of 1.8 m/s and maximum Reynolds Shear Stresses (RSS) of 17,500 dynes/cm2, which were found along the centerline of the valve in the hinge region 2 ms after valve closure. The large velocity and RSS gradients denote the presence of complex flow structures. These results provide an initial basis for understanding the impact of valve geometry on hemolysis and thrombosis associated with the On-X MHV.
AB - Three-dimensional laser Doppler velocimetry (LDV) was used to characterize the flow created by the On-X bileaflet mechanical heart valve (MHV) manufactured by Medical Carbon Research Institute (MCRI), Inc. (Austin, TX). The valve was mounted into a pneumatically driven single-shot chamber in the mitral position such that only the closure dynamics were simulated. Measurements taken 2 mm proximal to the valve housing showed a peak velocity of 1.8 m/s and maximum Reynolds Shear Stresses (RSS) of 17,500 dynes/cm2, which were found along the centerline of the valve in the hinge region 2 ms after valve closure. The large velocity and RSS gradients denote the presence of complex flow structures. These results provide an initial basis for understanding the impact of valve geometry on hemolysis and thrombosis associated with the On-X MHV.
UR - http://www.scopus.com/inward/record.url?scp=40449102109&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=40449102109&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:40449102109
SN - 0791847985
SN - 9780791847985
T3 - Proceedings of the ASME Summer Bioengineering Conference 2007, SBC 2007
SP - 687
EP - 688
BT - Proceedings of the ASME Summer Bioengineering Conference 2007, SBC 2007
T2 - 2007 ASME Summer Bioengineering Conference, SBC 2007
Y2 - 20 June 2007 through 24 June 2007
ER -