
Negatiw basyşly sorujy örtük esasan urologiki hirurgiýada ulanylýar. Ol negatiw basyşly nasosa birikdirilip, böwrekde negatiw basyş gurşawyny saklaýar, ýuwujy suwuklygyň yzyna gaýdyp gelmeginiň öňüni alýar, daşlary netijeli aýyrýar we operasiýa wagtyny azaldýar.
| SN | Model | Tube ID | Iş uzynlygy | |
| L±10 (mm) | ||||
| Fr | mm | |||
| 1 | ZRH-NQG-9-35 | 9 | 3.17 | 350 |
| 2 | ZRH-NQG-9-45 | 9 | 3.17 | 450 |
| 3 | ZRH-NQG-10-35 | 10 | 3.33 | 350 |
| 4 | ZRH-NQG-10-45 | 10 | 3.33 | 450 |
| 5 | ZRH-NQG-11-35 | 11 | 3.67 | 350 |
| 6 | ZRH-NQG-11-45 | 11 | 3.67 | 450 |
| 7 | ZRH-NQG-12-35 | 12 | 4 | 350 |
| 8 | ZRH-NQG-12-45 | 12 | 4 | 450 |
| 9 | ZRH-NQG-13-35 | 13 | 4.33 | 350 |
| 10 | ZRH-NQG-13-45 | 13 | 4.33 | 450 |
| 11 | ZRH-NQG-14-35 | 14 | 4.67 | 350 |
| 12 | ZRH-NQG-14-45 | 14 | 4.67 | 450 |
| 13 | ZRH-NQG-16-35 | 16 | 5.33 | 350 |
| 14 | ZRH-NQG-16-45 | 16 | 5.33 | 450 |