The present invention relates to safety syringes, and it is an object of the present invention to provide a safety syringe for a patient presented as serious in the report of WHO and CDC to a nurse or a physician or a waste disposal person after the injection for the infectious disease transmitted by pathogen infection caused by needle- As a part of the solution, the injected product is injected into the syringe barrel before the injection needle is disadvantageous to the patient. After the injection, the needle needle and the needle are separated and injected into the outer barrel This is a safety syringe that can be reused (Auto disable), which prevents needle stabbing and reuse. In the present invention, the syringe barrel tip (defective portion of the needle hub) is assembled, the lock key is mounted inside the tip, and the locking hook is provided at the end of the syringe barrel. After the injection, the locking key of the barrel tip and the hook of the barrel end are mutually locked In case of attempted reuse by artificial reuse, the assembled outer tube tip is pulled into the inside of the outer tube and is not functionally reused. In order to prevent needle puncture, the doctor or nurse When the needle is pulled back into the outer tube, the needle stick is prevented. The characteristics of the present invention are solved by one of the inventions of two functions (needle retractive and auto disability) in which the needle is pinched accidentally and the reuse is automatically prevented at the same time when the push rod is cooled and then separated before the syringe is separated from the patient's body after injection . [Index] Safety syringe, pusher, outer tube, detachable outer tube tip, locking hook, lock key, leakproof pad, external locking hub,본 발명품은 안전주사기에 관한 것으로서 WHO 와 CDC 의 보고서에서 심각성으로 제시한 환자에게 주사 후 간호사 나 의사 혹은 폐기물처리 하는 사람들 이 주사바늘 찔림으로 발생하는 병원균 전염이나 동일 주사기를 재사용함으로 전염되는 전염병에 대한 해결책의 일환으로 발명된 제품으로 주사 후 주사바늘 을 환자에게서 불리 되기 전 밀대를 후진시켜 바늘이 주사기 외통으로 끌어들인
