Current status of the intra-cardiac axial flow pump

• Autorzy: Mitamura Y. , Yano T. , Kido K. , Sakota D. , Takahashi N. , Mori Y. , Murabayashi S. , Nishimura I. , Sekine K.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

artificial heart; rotary blood pump

PL

sztuczne serce; przepływ krwi; pompa rotacyjna

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2006
• Tom: Vol. 26, no. 1
• Strony: 39--44
• Opis fizyczny: Bibliogr. 1 poz., rys., wykr.

Twórcy

autor

Mitamura Y.

autor

Yano T.

autor

Kido K.

autor

Sakota D.

autor

Takahashi N.

autor

Mori Y.

autor

Murabayashi S.

autor

Nishimura I.

autor

Sekine K.

• Department of Biomedical Systems Engineering, Graduate School of Information Science and Technology, Hokkaido University, Kita 14 Nishi 9, Kita-ku, Sapporo 060-0814, Japan,

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