What am I looking at?
Visual recognition
Short introducer sheath entering the access circuit, sometimes directed toward the outflow.
16-01
Dialysis working sheath

Three-panel learning framework
What am I looking at?
Short introducer sheath entering the access circuit, sometimes directed toward the outflow.
What does it do, and where will I see it?
Short sheath cannulating the fistula or graft to inject contrast and provide a working channel for angioplasty, thrombectomy, or stenting. Typical procedural contexts include fistulography, fistuloplasty, and AV graft declot.
What most clearly distinguishes it from similar devices?
The sheath serves both as a contrast-access point for fistulography and as a working channel for subsequent intervention within the AV dialysis circuit.