The present invention provides a suction device having a rotary switch, which includes a patent-end port, an oxygen supply port, a suction port, a purging port and a connecting portion. The rotary switch is assembled with the connecting portion and can be switched between a first position and a second position. The rotary switch is provided with two opposite suction holes. When the rotary switch is located in the first position, the two suction holes are aligned with the patent-end port and the suction port, so that the patent-end port is in fluid communication with the suction port. When the rotary switch is located in the second position, the fluid communication between the patent-end port and the suction port is shut off.一種具旋轉開關的抽痰裝置,抽痰裝置的本體設有病患端接頭、氧氣供應接頭、抽痰接頭、沖洗接頭及連接部,旋轉開關組接於連接部並能夠在第一位置及第二位置之間切換,旋轉開關設有相向的二抽痰孔;當旋轉開關處於第一位置時,該二抽痰孔對齊病患端接頭與抽痰接頭,以使病患端接頭與抽痰接頭彼此相通;當旋轉開關處於第二位置時則關閉病患端接頭與抽痰接頭之間的連通。1‧‧‧抽痰裝置100‧‧‧本體110‧‧‧病患端接頭120‧‧‧氧氣供應接頭140‧‧‧沖洗接頭151‧‧‧缺口152‧‧‧凸緣153‧‧‧溝槽154‧‧‧密封環200‧‧‧旋轉開關210‧‧‧旋蓋部211‧‧‧指示件220‧‧‧插接部222‧‧‧沖洗液入口223‧‧‧沖洗液出口224‧‧‧抽痰孔225‧‧‧抽痰孔2251‧‧‧卡合凸塊226‧‧‧刮痰片2261‧‧‧穿孔2262‧‧‧卡槽P1‧‧‧第一位置P2‧‧‧第二位置
