To provide a safety syringe capable of improving efficiency and safety without the necessity for the user to cover the injection needle and attaching the injection needle safety cap separately as the injection is finished.SOLUTION: The pusher includes a pusher 10 and a syringe barrel 20, and first and second pushing portions are respectively provided at both ends of the pusher, a cover body 14 is provided at the first pushing portion 11, a cover The rod 141 extends from the bottom of the body. A fixing part is provided at the end of the rod body and is coupled with the connecting part 111. A hollow tube body 112 is provided on the other end of the connecting part, a position limiting hole is provided in the connecting part, and a stair part is provided in the position limiting hole. An elastic part 13 is placed on the rod body, and the rod body is inserted into the position restricting hole, and the fixing part and the stair part are brought into contact with each other. A storage space 21 is provided inside the syringe barrel, and a projecting hollow fixing part 23 is provided on the bottom surface of the syringe barrel. An injection needle 24 is attached to the fixed part, and the tube body is longer than the injection needle. The second pushing portion 12 of the pusher is accommodated in the accommodating space, and the syringe barrel is located in the tube body.BACKGROUND OF THE INVENTION【課題】注射し終えると同時に、管体が注射針を覆い、使用者が別途注射針安全キャップを取付ける必要が無く、効率と安全性の向上が可能な、安全注射筒を提供する。【解決手段】押子10と注射筒20とからなり、押子の両端にはそれぞれ第一及び第二押動部が設けられ、第一押動部11にはカバー体14が設けられ、カバー体の底面からは棒体141が延伸する。棒体の末端には固定部品が設けられ、接続部品111と結合される。接続部品の他端上には中空の管体112が設けられ、接続部品内には位置制限穴が設けられ、位置制限穴内には階段部が設けられる。棒体上には弾性部品13が被せられ、棒体は位置制限穴内に挿設され、固定部品と階段部とを当接させる。注射筒の内部には収容スペース21が設けられ、注射筒の底面には突出した中空の固定部23が設けられる。固定部には注射針24が取付けられ、管体は注射針よりも長い。押子の第二押動部12は収容スペース内に収容され、注射筒は管体内に位置する。【選択図】図1
