A medical device includes: a hollow body part formed in a predetermined between shape； a head part provided at a tip portion thereof with a discharge port for discharging cleaning water and detachably coupled to a front end of the body part； a connection part connected to a shower hose and a rear end of the body part and provided with a control valve for controlling water supply, a water flow rate and a water pressure； a water purification tube built in the body part and provided with leakage preventing grilles at both ends thereof； and a purified water discharge part provided inside the head part and configured to remove foreign substances in the water by using a filter.
