Disposable self-disable?safety?syringe

The utility model discloses a disposable self-disable?safety?syringe. The syringe comprises an elastic body for positioning a needle holder on the front end of an inner hole of a syringe barrel and at least one annular flange clamped with a clamping groove on the inner hole of the syringe barrel is arranged on the outer wall of the elastic body. The structure of the elastic body is redesigned, and the disposable self-disable?safety?syringe has features of simple structure, material saving, and good deformation performance, so that the elastic body firstly obtains the accumulated force, breaks out, shifts upwards, and then quickly extrudes an air cavity and finally obtains a larger break-out force during the self-disable excitation process.