Development of Linear Actuator for Pulsatile Pump

Abstract

　Recently, the majority of artificial hearts have been no pulsatile types.　However natural hearts are pulsatile, and the long-term biocompatibility of the no pulsatile types has not been confirmed.　We developed a linear actuator that can expect to be applied to pulsatile artificial heart.　This linear actuator was applied to a pulsatile pump.　It consists of power transmission, tanks, and permanent magnets.　We propose a structure to reduce power consumption by a spring.　Reduction in power consumption makes possible to downsize the entire apparatus.　We developed such a linear actuator for pulsatile pump.　In addition, we applied it to the electromagnetic pump and evaluated the basic structure and characteristics from the experiment.