This is an experimental device. Use with caution on your own risk.

The design has been made for the IV stand with diameter 20mm

Material: PETG
3D Printer: FDM 3D printer, average print time 26 hours.
Slicer settings: 0.3mm layer height, 5 perimeters, 40% gyroid infill (or more), no supports, 
Post processing instructions: Clean stringing, use M5 bolts and nuts to assemble, insert the metal IV stand and secure with two bolts on the side.