+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Preclinical comparison of superpulse thulium fiber laser and a holmium:YAG laser for lithotripsy



Preclinical comparison of superpulse thulium fiber laser and a holmium:YAG laser for lithotripsy



World Journal of Urology 2019:



A superpulse (500 W peak power) thulium fiber laser operating at a 1940 nm wavelength, suitable for lithotripsy, has recently been developed. The goal of this study was to compare stone fragmentation and dusting performance of the prototype superpulse thulium fiber laser with leading commercially available, high-power holmium:YAG lithotripters (wavelength 2100 nm) in a controlled in vitro environment. Two experimental setups were designed for investigating stone ablation rates and retropulsion effects, respectively. In addition, the ablation setup enabled water temperature measurements during stone fragmentation in the laser-stone interaction zone. Human uric acid (UA) and calcium oxalate monohydrate (COM) stones were used for ablation experiments, whereas standard BegoStone phantoms were utilized in retropulsion experiments. The laser settings were matched in terms of pulse energy, pulse repetition rate, and average power. At equivalent settings, thulium fiber laser ablation rates were higher than those for holmium:YAG laser in both dusting mode (threefold for COM stones and 2.5-fold for UA stones) and fragmentation mode (twofold for UA stones). For single-pulse retropulsion experiments, the threshold for onset of stone retropulsion was two to four times higher for thulium fiber laser. The holmium:YAG laser generated significantly stronger retropulsion effects at equal pulse energies. The water temperature elevation near the laser-illuminated volume did not differ between the two lasers. Distinctive features of the thulium fiber laser (optimal wavelength and long pulse duration) resulted in faster stone ablation and lower retropulsion in comparison to the holmium:YAG laser.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 066754353

Download citation: RISBibTeXText

PMID: 31055626

DOI: 10.1007/s00345-019-02785-9


Related references

V03-02 First Clinical Study On Superpulse Thulium Fiber Laser For Lithotripsy. The Journal of Urology 199(4): e321-e322, 2018

Dusting efficiency comparison between Moses technology of Ho: Yag laser and superpulse thulium fiber laser. European Urology Suppl.s 18(1): e1757-e1758, 2019

Comparison of holmium:YAG and thulium fiber laser lithotripsy: ablation thresholds, ablation rates, and retropulsion effects. Journal of Biomedical Optics 16(7): 071403, 2011

Thulium fiber laser: the new player for kidney stone treatment? A comparison with Holmium:YAG laser. World Journal of Urology 2019:, 2019

Thulium fiber laser lithotripsy: an in vitro analysis of stone fragmentation using a modulated 110-watt Thulium fiber laser at 1.94 microm. Lasers in Surgery and Medicine 37(1): 53-58, 2005

Comparison between the possibilities of holmium and thulium laser in lithotripsy in vitro. European Urology Suppl.s 16(3): E391-E392, 2017

Holmium:YAG (lambda = 2,120 nm) versus thulium fiber (lambda = 1,908 nm) laser lithotripsy. Lasers in Surgery and Medicine 42(3): 232-236, 2010

In-vitro comparison between the 200 mum and 365 mum fiber for Holmium laser lithotripsy. Journal of Endourology 12(Suppl. 1): S83, 1998

Laser lithotripsy of salivary stones a comparison between the pulsed dye laser and the holmium ysgg laser. Lasers in Medical Science 5(4): 357-365, 1990

Radiopaque laser fiber for holmium: yttrium-aluminum-garnet laser lithotripsy: critical evaluation. Journal of Endourology 26(6): 722-725, 2012

Stretched-pulse and solitonic operation of an all-fiber thulium/holmium-doped fiber laser. Applied Optics 54(4): 746-750, 2015

Fiber optic muzzle brake tip for reducing fiber burnback and stone retropulsion during thulium fiber laser lithotripsy. Journal of Biomedical Optics 22(1): 18001, 2017

Q-switched thulium/holmium fiber laser with gallium selenide. Optik 175: 87-92, 2018

Dissipative dispersion-managed soliton 2 μm thulium/holmium fiber laser. Optics Letters 36(5): 609-611, 2011

Detachable fiber optic tips for use in thulium fiber laser lithotripsy. Journal of Biomedical Optics 18(3): 038001, 2013