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Pulsatile artificial hearts having a relatively large volume are difficult to implant in a small patient, but rotary blood pumps can be easily implanted. The objective of this study was to show the feasibility of using the Valvo-pump, an axial flow pump implanted at the heart valve position, in such cases. The Valvo-pump consists of an impeller and a motor. The motor is waterproofed with a magnetic fluid seal. A blood flow of 5 L/min was obtained at a pressure difference of 13.3 kPa at 7,500 rpm. The normalized index of hemolysis (NIH) was 2.6 times the Bio-Pump. The pump was implanted in three goats between the left ventricle and the aorta. The pump bypassed about 85% of cardiac output. The results showed that the Valvo-pump could maintain systemic circulation with an acceptable level of hemolysis.
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Czasopismo
Rocznik
Tom
Strony
39--44
Opis fizyczny
Bibliogr. 1 poz., rys., wykr.
Twórcy
autor
autor
autor
autor
autor
autor
autor
autor
autor
- Department of Biomedical Systems Engineering, Graduate School of Information Science and Technology, Hokkaido University, Kita 14 Nishi 9, Kita-ku, Sapporo 060-0814, Japan, mitamura@bme.ist.hokudai.ac.jp
Bibliografia
- Mitamura Y., Nakamura H., Okamoto E., Yozu R., Kawada S., Kim D-W.: Development of the Va1vo Pump: An Axia1 Flow Pump Imp1anted at the Heart Va1ve Position; Artificia1 Organs, 1999, 23,566-571
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ1-0030-0003