The safety syringe is a self-destructing syringe whose needle retracts automatically after the injection is completed. The needle automatically retracts into the sheath after injection. The needle stained with the patient's blood will never cause accidental injury to the medical staff .
Due to its high safety, Europe and the United States have set out to popularize this syringe in the medical field. The "Federal Safety Syringe Act" in the United States stipulates that the United States clinical medical community should use safety syringes as much as possible, and all hospitals must follow suit.