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Pulsatile Augmentation Device for Extracorporeal Circulation
Author(s) -
Doty Donald B.,
Wang Naidong,
Chiang Bangyu,
Mohammad S. Fazal
Publication year - 1996
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1996.tb00680.x
Subject(s) - pulsatile flow , extracorporeal circulation , cardiopulmonary bypass , extracorporeal , heart lung machine , biomedical engineering , cardiology , ventricular assist device , ventricle , circulatory system , extracorporeal membrane oxygenation , medicine , hemodynamics , peristaltic pump , materials science , heart failure , mechanical engineering , engineering
A device has been designed, constructed, and tested to provide pulsatile pressure/flow to a standard extracorporeal bypass circuit. The pulsatile augmentation device is pneumatically driven similar to an artificial heart ventricle except that there are no valves. It is constructed of polyurethane by vacuum forming and high frequency welding. Drivers used are a modified Arrow‐Kontron in‐traaortic balloon pump or the Utah artificial heart driver. In vitro testing with fresh bovine blood demonstrated acceptable blood compatibility and hemodynamic function. In vivo testing for 4 h in a right and left heart extracorporeal bypass circuit showed good pulse augmentation in pulmonary and systemic bypass circuits. The device shows promise for adding pulse to standard cardiopulmonary bypass and to extracorporeal right heart circulatory assist circuits.