Abstract: A fluid container assembly including a flexible vessel containing a solvent or diluent and having a fluid communicating port in an upper portion thereof, a drug container containing a drug and having a drug communicating port in a lower portion thereof, and a connecting part for connecting the fluid communicating port of the flexible vessel to the drug communicating port of the drug container, wherein the connecting part includes a plug removably fitted into both the fluid communicating port and the drug communicating port and a plug holding extendable member for holding the plug while unplugging the same when assuming its extended position, the member connecting the outer periphery of the fluid communicating port to the outer periphery of the drug communicating port and defining a fluid communicating path.

Abstract: Disclosed is a fluid container having a flexible bag containing a diluent and having a closing film at its upper end, a capsule connected to the flexible bag, a drug container held in the capsule and a communicating member for communicating the flexible bag with the drug container. The communicating member has a double-edged hollow needle having a hub in the midway thereof, and a controlling mechanism for controlling the order of communication in such a manner that the plug of the drug container is stuck with one edge of the needle and thereafter the closing film of the flexible bag is stuck with the other end of the needle. The mixing procedure is sure and simple, and can be carried out in a short period of time.

Abstract: A drug delivery device includes a cylinder having a large diameter and a drug delivery member coaxially fitted to one end of the cylinder and in fluid communication therewith, the drug delivery member having a diameter substantially smaller than that of the cylinder. Drug delivery orifices are formed only at a side wall of the drug delivery member at an end thereof opposite the cylinder. A plunger fittable into an end of the cylinder opposite the drug delivery member has a disc portion and a central projection which fits into the drug delivery member. A cap covering the drug delivery member has an annular projection on the inside thereof for sealing the drug delivery member.