Abstract
This paper describes fabrication of a cylinder type gas-liquid phase change actuator. Pneumatic actuator is used for a endoscopic surgery support robot. However pneumatic actuator have some faults. Its peripheral equipment is large and makes oscillation and electromagnetic noise. These adversely affect medical equipments. We think that new actuator which does not have those faults is necessary. We suggest a gas-liquid phase change actuator. It is an actuator which big power is got from in the small size. And it can work only with DC power supply such as dry cells. Its device is small and has a small influence to give medical equipments. We fabricated a cylinder type gas-liquid phase change actuator. We identified its mechanical characteristics and operation principle.
