Real-time in vitro observation of cavitation on prosthetic heart valves

A method for real-time in vitro observation of cavitation on a prosthetic heart valve has been developed. Cavitation of four blood analog fluids (distilled water, aqueous glycerin, aqueous polyacrylamide, and aqueous xanthan gum) has been documented for a Medtronic/Hall prosthetic heart valve operat...

Full description

Saved in:
Bibliographic Details
Main Authors: Zapanta, C.M., Liszka, E.G., Stinebring, D.R., Deutsch, S., Geselowitz, D.B., Tarbell, J.M.
Format: Conference Proceeding
Language:English
Subjects:
Arteries
Artificial biological organs
Bars
Biomechanics
Blood
Delay effects
Heart valves
In vitro
Mercury (metals)
Prosthetics
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method for real-time in vitro observation of cavitation on a prosthetic heart valve has been developed. Cavitation of four blood analog fluids (distilled water, aqueous glycerin, aqueous polyacrylamide, and aqueous xanthan gum) has been documented for a Medtronic/Hall prosthetic heart valve operating in a Penn State Electric Assist Device at physiologic conditions. For each fluid, cavity growth and collapse occurred in less than one millisecond. The cavity duration time was found to decrease with increasing atrial pressure at constant aortic pressure and beat rate. From this study, it was concluded that cavitation may also occur in blood.< >
DOI:10.1109/NEBC.1993.404378