#$%^&*AU2012238256A120130523.pdf#####ABSTRACT A safety syringe includes a barrel, a plunger, and a needle hub. The needle hub is detachably installed in a tube portion. The plunger can be moved to an injecting position, a limit position, and a disposal position with respect to the needle hub. 8L 3 31 2 32 33 21;-322 >; 321 23231 23 2 232 25 - Oo r4 - 43 22 43 22 432 241 44 42 4 5 F~ .