Abstract: A tubular locking body of a tamper evident plastic closure for necked vials for holding a plug in a mouth of a vial includes a retaining member for retaining the plug, a central opening being formed in the retaining member for providing access to the inside of the vial via the plug. The cap includes a disc-shaped cover and a coupling portion, for coupling the cap with the tubular locking body by positive-fit engagement. The coupling portion includes at least one frangible portion each configured such that at least one indicator member remains as a tamper evidence at a rim of the central opening of the tubular locking body after removal of the cap from the distal end of the tubular locking body by irreversibly breaking the annular frangible portion for providing access to the inside of the vial via the plug.

Abstract: In a locking device for locking a plunger rod a plunger rod locking portion is provided for locking a plunger rod of a syringe after use and preventing re-use of the syringe. A chamber is formed inside the plunger rod locking portion for receiving the disc-shaped proximal end of the plunger rod after use of the syringe. The plunger rod locking portion comprises at least one positive locking device configured to positively lock the axial position of the plunger rod by positive-fit engagement with the disc-shaped proximal end of the plunger rod and retain the disc-shaped proximal end of the plunger rod inside the chamber. The locking device provides the functionality of a tamper-evident plunger rod locking device once a dose of medication has been injected by pushing the plunger rod forward, for preventing inadvertent re-use of the syringe.