Container cap assembly having an enclosed penetrator

A cap assembly for a container having a stopper, said cap assembly comprising:

• a hollow housing having an upper end portion adapted to receive a fluid transfer device in sealed communication and a lower end portion adapted to be mounted adjacent a top end of a stopper sealing a container, the lower end portion having a radially outwardly extending portion extending therefrom and a downwardly extending element to engage a stopper, and an internal cavity open at the upper end portion and at the lower end portion;
• a penetrator received in the internal cavity, the penetrator having a pointed distal end opposite a stopper and an upper end constructed to be engaged by a fluid transfer device inserted into the internal cavity;
• a removable cap constructed to cover the hollow housing, the cap having a closed end and an open end, the cap having a radially outwardly extending portion extending therefrom at the open end;
• and
• a ferrule having a first portion disposed over the radially outwardly extending lower end portion of the hollow housing and over the radially outwardly extending portion of the cap.