Disposable MagLev Centrifugal Blood Pump

Abstract

We have developed a magnetically–levitated (MagLev) disposable centrifugal blood pump with a simply–structured magnetic coupling to realize a durable and low cost disposable pump head. In this report, principles of the proposed magnetic bearing and magnetic coupling are described and applied to a disposable centrifugal blood pump. The pump satisfies the required performance (250 mmHg, 5 l/min) for artificial heart–lung machines, and the amplitude of the impeller oscillation in the controlled directions decreased to 8 mm at 2,000 rpm by repetitive control.