Jinko Zoki
Online ISSN : 1883-6097
Print ISSN : 0300-0818
ISSN-L : 0300-0818
A new valveless pulsatile blood pump
K. SAKAKIBARAM. KAWAMURAS. KOBAYASHIY. IYOMASAH. TAKAHASHIS. KONISHIR. HIRAYAMAR. AOKIH. WAKAIS. WATANABET. YOSHIZAWA
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1974 Volume 3 Issue 6 Pages 402-408

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Abstract
To improve many defects of the foremer model, a new type of pulsatile blood pump was developed which has very simplified mechanism and is also able to realize any type of pulse contour. As the pumping head, that of roller type blood pump was employed, but, as a driving power source, a specially designed pulse motor was introduced. The driving axis of this motor was designed to rotate 5° as one step, which corresponded with each input pulse, and through the control of pulse frequency, the disproportional movement of the axis can realize any type of pulsatile flow. Among many features of this pump, it does not require any valve mechanism in the blood stream, the control of this device is very simple and easy, and the driving condition is easily changeable as to modify the pulse contour freely. This blood pump can also be synchronized with ECG for the long-term assist circulation. The free choice of pulse contour is beneficial for the physiological analysis of the hemodynamics of artificial circulation, and is thought to be useful in determining the optimal driving condition of the total artificial heart.
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© The Japanese Society for Artificial Organs
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