An in-line connector for use in an enteral feeding system includes a tamper-proof, single-use connector having a first component connectable to a first feeding device of the feeding system, and a second component connectable to a second feeding device of the feeding system. A releasable locking mechanism is provided such that the first component and the second component do not rotate when connected. The connector further includes one or more prongs positioned substantially flush against an interior wall of the second component when the first component and the second component are connected such that the prongs do not interfere with the releasable locking mechanism. Meanwhile, the one or more prongs are displaced away from the interior wall when the first component is detached or disconnected from the second component such that the second component resists re-insertion or reattachment of the first component.
