Syringe with fixing structure

The utility model discloses an injector with a fixing structure, which comprises a needle cylinder, a push rod is arranged in the needle cylinder, two baffle plates are arranged on the needle cylinder, four side wings are arranged on the push rod, a fixing block is arranged on the needle cylinder, a slot for the baffle plates on the needle cylinder to be inserted is arranged on the fixing block, and the needle cylinder is provided with a fixing groove. One end of the fixing block is provided with a fixing piece for fixing the fixing block on the needle cylinder, the other end of the fixing block is provided with a pressing plate, a cavity is formed in the fixing block, and a fixing mechanism for fixing the push rod is arranged in the cavity. The syringe has the advantages that the push rod can be fixed firmly, and the push rod is prevented from moving towards the inside of the syringe. 本实用新型公开了一种带有固定结构的注射器，包括针筒，所述针筒内设置有推杆，所述针筒上设置有两个挡板，所述推杆上设置有四个侧翼，所述针筒上设置有固定块，所述固定块上开设有供针筒上挡板插接的插槽，所述固定块的一端设置有将其固定在针筒上的固定件，所述固定块