Patent ID: 6132401
Filing Date: 2000-10-17
Classification: A61M

Abstract:
A syringe comprising:a tubular protective sheath carrying piston engaging formations and having a needle end and an opposite rear end;a piston including an elongate piston body and a piston head, the piston having a longitudinal fluid pathway through the head and the body, the piston body being operatively locatable to extend within the sheath and be engaged by the piston engaging formations with the piston head outside the sheath and connected to and in fluid communication with the piston body; anda barrel being slidable in a discharge stroke in use over the outside of the operatively located piston head and along the sheath to a discharged position, to thereby release the piston engaging formations and grip the released piston, the barrel being oppositely slidable from the discharged position to withdraw the released piston substantially from the sheath to a safe locked position relative to the sheath;wherein the barrel is shaped and dimensioned to be slidable over the outside of protective sheath and the piston body and sheath carry clips and stops to operatively lock the piston body relative to the sheath to hold a needle used with the syringe inside the sheath before and after use.