Patent ID: 8752598

Claim:
A liquid drug transfer assembly for use with a drug vial including a drug vial bottle containing a drug component and having a drug vial opening stopped by a drug vial stopper, the liquid drug transfer assembly comprising: (a) a drug vial stopper puncturing member with a drug vial stopper puncturing tip for puncturing the drug vial stopper; and (b) a drug vial adapter having a longitudinal drug vial adapter axis and including a drug vial adapter skirt having a transversely directed drug vial adapter top surface formed with an upright drug vial adapter port, a drug vial adapter body portion for snugly receiving the drug vial opening and a drug vial adapter skirt margin remote from said drug vial adapter top surface, and a drug vial adapter sleeve downward depending from said drug vial adapter top surface opposite said upright drug vial adapter port and in flow communication therewith, said drug vial adapter being slidingly disposed on said drug vial stopper puncturing member such that said drug vial stopper puncturing tip protrudes beyond said drug vial adapter sleeve, the arrangement being such that on mounting the liquid drug transfer assembly on the drug vial, said drug vial stopper puncturing member punctures the drug vial stopper to form a throughgoing puncture bore and said drug vial adapter sleeve lines said puncture bore whereby, on withdrawal of said drug vial stopper puncturing member from said puncture bore, said drug vial adapter sleeve prevents the drug vial stopper from sealing itself thereby enabling flow communication between said drug vial adapter port and the drug vial bottle.