Manifold for infusion system

An infusion system comprising:

• a primary delivery device;
• a secondary delivery device;
• an ancillary device;
• and
• a manifold including:
• a primary connection port operable to be fluidly coupled with the primary delivery device;
• a delivery connection port in fluid communication with the primary connection port, the delivery connection port being operable to be fluidly coupled with the ancillary device, the delivery connection port being operable to permit unidirectional flow from the primary connection port to the ancillary device;
• a secondary connection port operable to be fluidly coupled with the secondary delivery device, the secondary connection port being in fluid communication with the primary connection port, the secondary connection port being operable to permit unidirectional flow from the secondary delivery device to the primary connection port,
• wherein the primary connection port is operable to permit bidirectional flow so that fluid is operable to flow:
• (1) from the primary delivery device through the primary connection port and through the delivery connection port to the ancillary device, and (2) from the secondary delivery device through the secondary connection port and through the primary connection port to be received by the primary delivery device.