| Material |
Very thin double layered film membrane |
Polyurethane foam |
| Diameter of drainage tube |
4 – 6 mm |
4 – 6 mm |
| Diameter of distal end of drainage tube with open-porosity element |
4 – 6 mm |
1.5 – 3.2 cm |
| Length of distal end of drainage tube with open porosity element |
3 – 25 cm |
3 – 12 cm |
| Visible effect of negative pressure |
Pimpled pattern |
Erosive pattern |
| Endoscopic techniques |
Push, pull, pull-through, guide-wire, Seldinger technique |
Push, pull, pull-through |
| Negative pressure therapy variants |
Intraluminal and intracavitary |
Intraluminal and intracavitary |
| Insertion |
Nasally and through openings smaller than 1.5 cm in diameter |
Orally and through openings more than 1.5 cm in diameter |
