What am I looking at?
Visual recognition
Small threaded male-and-female Luer fitting at a syringe, tubing, stopcock, or catheter junction; the interlocking threads distinguish it from a simple slip connection.
06-05
Luer-lock connector
Locking fluid connector
Three-panel learning framework
Recognition, context, and distinction
What does it do, and where will I see it?
Use & procedural context
Threaded fitting that locks fluid connections so they cannot separate under injection pressure. Typical procedural contexts include syringes, tubing, stopcocks, manifolds, drains, and catheters across the IR table.
What most clearly distinguishes it from similar devices?
Key distinctions
The threaded lock is the critical distinction: it secures a fluid connection against separation under pressure, unlike a nonlocking slip-fit junction.