Liquid transfer device with telescopic vial adapter for use with infusion liquid container and discrete injection vial

A liquid transfer device comprising:

• a vial adapter comprising a puncturing cannula for puncturing an injection vial stopper;
• an IV spike and a substitute IV port holder for receiving a substitute IV port;
• a flow control member port, wherein the IV spike, the substitute IV port holder and
• the puncturing cannula are in flow communication with the flow control member port;
• and
• a flow control member sealingly inserted in the flow control member port, wherein rotation of the flow control member between a plurality of positions controls flow communication of the liquid transfer device, the positions comprising:
• a mixing position for enabling flow communication between the IV spike and the puncturing cannula;
• and
• an administering position for enabling flow communication between the IV spike and the substitute IV port holder,
• wherein the vial adapter further comprises an inner vial adapter body having a vial crown cavity for receiving a vial crown, and an outer vial adapter body, wherein the outer vial adapter body slidingly receives the inner vial adapter body therein when the vial adapter undergoes compaction from a pre-compacted state to a compacted state.