Patent ID: 8657800

Claim:
A suction device having a rotary switch, including: a main body ( 100 ), one end of the main body ( 100 ) being provided with a patient-end connector ( 110 ) and an oxygen supply connector ( 120 ) in communication with the patient-end connector ( 110 ), the other end of the main body ( 100 ) being provided with a suction connector ( 130 ) and a cleaning connector ( 140 ) in communication with the suction connector ( 130 ), the main body ( 100 ) further having a connecting portion ( 150 ) in communication with the cleaning connector ( 140 ); and a rotary switch ( 200 ), assembled with the connecting portion ( 150 ) and switched between a first position (P 1 ) and a second position (P 2 ), the rotary switch ( 200 ) being provided with a cleaning liquid inlet ( 222 ) in communication with and facing to the cleaning connector ( 140 ), a cleaning liquid outlet ( 223 ) in communication with the cleaning liquid inlet ( 222 ) and facing to the suction connector ( 130 ) when the rotary switch ( 200 ) located at the second position (P 2 ), and two suction holes ( 224 , 225 ) oppositely provided on both sides of the cleaning liquid inlet ( 222 ), the periphery of the suction hole ( 225 ) adjacent to the suction connector ( 130 ) being provided with a sputum-wiping piece ( 226 ) which is located inside the rotary switch ( 200 ); whereby, the two suction holes ( 224 , 225 ) are aligned with the patient-end connector ( 110 ) and the suction connector ( 130 ) when the rotary switch ( 200 ) is located at the first position (P 1 ) to thereby communicate the patient-end connector ( 110 ) with the suction connector ( 130 ), and the communication between the patient-end connector ( 110 ) and the suction connector ( 130 ) is shut off when the rotary switch ( 200 ) is located at the second position (P 2 ).