Salvage a type medicine pre -prepared syringe

The utility model provides a salvage a type medicine pre -prepared syringe, belongs to syringe technical field for the pre -prepared medicine that uses is salvaged in the emergency call. Its technical scheme is: the cavity of needle tubing comprises anterior cavity and rear portion cavity, and the diameter of anterior cavity is less than the diameter of rear portion cavity, and anterior cavity is linked together with the rear portion cavity, installs two sealing washers on the push rod respectively, and the front end at the push rod is installed to a sealing washer, the internal diameter phase -match of its external diameter and the anterior cavity of needle tubing, and another sealing washer is installed at the rear portion of push rod, the internal diameter phase -match of its external diameter and needle tubing rear portion cavity. The utility model discloses independently aspirate two cavities of needle tubing respectively with two kinds of medicines in advance before clinical use in, pulling push rod bac