CHECK VALVE APPARATUS

摘要

PURPOSE: A check valve device opening and closing a path about a vacuum source is provided to tightly seal the inside of a housing when opening and closing a check valve device. CONSTITUTION: A check valve device opening and closing a path comprises an outer housing(110), an inner housing(140) and a check valve(170). The negative pressure generation device is connected to one side of the outer housing. The inner housing is inserted into the outer housing inner side. A cupping glass for massage is connected to one side of predetermined tool. The check valve is arranged between the inner housing and the outer housing. The check valve swells according to the pressure difference between the cupping glass and the check valve in order to opening and closing the check vale device using the negative pressure generation device.