Patents Assigned to Medical Plastics (AUST) Pty. Ltd.
  • Patent number: 5658257
    Abstract: A syringe for administering a medicament having a barrel provided with a needle attachment member to which a needle may be mounted and which is retained by a catch at one end of the barrel, and a plunger which is movable in the barrel to expel medicament through the needle attachment member and needle. The plunger is hollow and contains a vacuum and is provided with a gripping member at one end which closes one end of the plunger and which when the plunger is advanced can engage the needle attachment member to releases its catch and withdraw the needle attachment member and mounted needle into the plunger.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: August 19, 1997
    Assignee: Medical Plastics (AUST) Pty. Ltd.
    Inventor: Louis Ryles