Characteristics of spiral vortex pump driven by two different drivers

• Autorzy: Ito K. , Sudo T. , Shima T. , Kouno Y. , Ohnishi Y. , Tanaka T. , Iwasaki K. , Fujimoto T. , Umezu M.
• Języki publikacji: EN

Abstrakty

EN

Here we describe a cardio-ventricular support system that combines a spiral vortex blood pump with an intra-aortic balloon pump driver. To reduce cost, we replaced the conventional ventricular assist driver with one used for an aortic balloon pump. We characterized the hydrodynamics of both drivers by recording pressure and flow waveforms during a single pulse for typical conditions of the pump. The pressure pulse of the ventricular assist driver was rectangular in shape, and the flow was maximal in the systolic fraction, when balanced conditions were achieved. By contrast, the triangle shaped pressure pulse of the balloon pump driver produced a constant volume. Flow increased in proportion to the rate of pulsation and drive volume. A minimum requirement set flow to 5 liters after 80 beats per minute. The balloon pump driver met the requirement with a 44 ml volume. Thus, the balloon pump driver effectively substituted for the ventricular assist driver. Our findings suggest that combining a spiral vortex pump with a balloon pump driver is cost-effective for left ventricular support during acute cardiac failure.

Słowa kluczowe

EN

artificial heart; spiral vortex pump driver; intra-aortic balloon pumping; left-ventricular support

PL

sztuczne serce; podpora lewokomorowa

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2007
• Tom: Vol. 27, no. 1-2
• Strony: 121--132
• Opis fizyczny: Bibliogr. 3 poz., rys., wykr.

Twórcy

autor

Ito K.

autor

Sudo T.

autor

Shima T.

autor

Kouno Y.

autor

Ohnishi Y.

autor

Tanaka T.

autor

Iwasaki K.

autor

Fujimoto T.

autor

Umezu M.

• Integrative Bioscience and Biomedical Engineering, Building 58, Room 322, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan,

Bibliografia

• 1. Umezu M., Nugent A.H., Ye C.X., Germon G., Pittelkow K.,Aitchison R, Nakamura T., Chang V. P: Flow characteristics of an Australian-made ventricular assist device: effects of diaphragm material; Proceedings of the Seventh International Conference on Biomedical Engineering., Singapore, 1990, 600-604.
• 2. Iwasaki K., Umezu M., Ye C.X., Nugent A., Nakamura T., Arita M., Yi Q., Tanaka T., Imachi K., IshiharaK., Chang V.: Spiral Vortex Yentricular Assist Device: Improvement by Engineering Analysis and Simulation; Asian Simulation Conference / Fifth International Conference on System Simulation and Scientific Computing, Shanghai, 2002, 1035-1039.
• 3. Ohnishi Y, Iwasaki K., Mizuta H., Sudo T., Muto S., Shima T., Tanaka T., Ito K., Umezu M.: In vitro hydrodynamic test and in vitro hemolysis test for the practical development of an inexpensive Spiral Vortex ventricular assist system using widespread IABP console; Proceedings of the First International Conference on Life System Modeling and Simulation, Shanghai, 2004, 32-36.