Mouth suction tube

The utility model discloses a mouth suction tube, the mouth suction tube comprises a microscopic needle, a suction nozzle and a filter, the microscopic needle is in a hollow structure and is a plastic piece, the filter is provided with a first circulation port and a second circulation port, the first circulation port is in sealing connection with the microscopic needle through a first connecting pipe, and the second circulation port is in sealing connection with the suction nozzle through a second connecting pipe. The oral suction tube can better prevent an embryo from being polluted and can better stabilize airflow, so that an operator can conveniently suck or inject a target component. 本实用新型公开了一种口吸管，该口吸管包括显微针、吸嘴和过滤器，显微针为中空结构，且为塑料件，过滤器具有第一流通口和第二流通口，第一流通口通过第一连接管与显微针密封连接，第二流通口通过第二连接管与吸嘴密封连接。该口吸管能够较好地避免胚胎受到污染，能够较好地稳定气流，从而方便操作人员进行吸取或者注射目标成分。