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- Title
Study of Temperature Changes Around Fibres in Super Pulse Thulium Fibre Laser in Vitro Lithotripsy.
- Authors
Ding Tianfu; Xiao Bo; Zeng Xue; Liang Lei; Ji Chaoyue; Li Jianxing
- Abstract
Purpose: To investigate temperature changes around the fibres of the super pulse thulium fibre laser (SP-TFL) during in vitro lithotripsy. Materials and Methods: Stones were placed in the in vitro model. The laser was continuously excited for 180 s; the probe was positioned 5 mm around the fibre; the laser power was set at 10, 15, 20, 25, and 30 W; and the irrigation rate was set at 0, 15, 25, 35 ml/min, using a domestic SP-TFL. The temperature variations around the fibre under different power settings and different irrigation rates were compared. Results: Without irrigation, the temperature around the fibre rapidly reached the safety threshold of 43℃ at 24 s. At an irrigation rate 15 ml/min and laser power <15 W, the temperature around the fibre was < 43℃. Once the laser power increased to ≥ 20 W, the temperature around the fibre increased to >43℃ at its lowest plateau. At irrigation rate 25 ml/min and laser power ≤ 25 W, the temperature around the fibre was < 43℃. At irrigation rate 35 ml/min and laser power < 30 W, the fibre temperature was < 43℃. When laser power was ≥ 30 W, the fibre temperature was > 43℃. Conclusion: In extracorporeal ureteroscope SP-TFL lithotripsy, when the laser power is ≤ 15 W, ≤ 25 W, and ≤ 30 W, the irrigation rate should be maintained at ≥ 15 ml/min, ≥ 25 ml/min, and ≥ 35 ml/min, respectively.
- Subjects
LASER lithotripsy; THULIUM; FIBERS; TEMPERATURE; RATE setting
- Publication
Urology Journal, 2023, Vol 20, Issue 2, p96
- ISSN
1735-1308
- Publication type
Article
- DOI
10.22037/uj.v20i.7326