Infusion adapter

An infusion adapter for connection with an infusion fluid container, the infusion adapter comprising:

• a connection portion for connecting to an injection port of the infusion fluid container, the connection portion defining a first connection portion fluid channel and a second connection portion fluid channel;
• a first port positioned at a first port end, the first port defining a first port fluid channel in fluid communication with the first connection portion fluid channel, the first port configured to be connected to a syringe adapter;
• and
• a second port positioned at a second port end, the second port defining a second port fluid channel in fluid communication with the second connection portion fluid channel, the second port configured to be connected to intravenous tubing,
• wherein the connection portion includes a retaining ring extending radially outward from the connection portion and extending around a circumference of the connection portion, the retaining ring is configured to provide a wedging action with the injection port of the infusion fluid container while maintaining a leak-proof seal,
• wherein the retaining ring has a first side with a tapered, rounded surface, a second side positioned opposite the first side, and a cylindrical surface positioned between the first and second sides, and
• wherein the second side of the retaining ring defines an edge that is configured to engage a portion of the infusion fluid container upon an attempt to withdraw the infusion adapter from the infusion fluid container.