MP43-13 PULSED THULIUM:YAG LASER: READY TO DUST ALL URINARY STONE COMPOSITION TYPES? RESULTS FROM a PEARLS ANALYSIS

You have accessJournal of UrologySurgical Technology & Simulation: Instrumentation & Technology II (MP43)1 May 2024MP43-13 PULSED THULIUM:YAG LASER: READY TO DUST ALL URINARY STONE COMPOSITION TYPES? RESULTS FROM a PEARLS ANALYSIS Jia-Lun Kwok, Eugenio Ventimiglia, Vincent De Coninck, Mariela Corrales, Alba Sierra, Frédéric Panthier, Felipe Pauchard, Florian Alexander Schmid, Manuela Hunziker, Cédric Poyet, Michel Daudon, Olivier Traxer, Daniel Eberli, and Etienne Xavier Keller Jia-Lun KwokJia-Lun Kwok , Eugenio VentimigliaEugenio Ventimiglia , Vincent De ConinckVincent De Coninck , Mariela CorralesMariela Corrales , Alba SierraAlba Sierra , Frédéric PanthierFrédéric Panthier , Felipe PauchardFelipe Pauchard , Florian Alexander SchmidFlorian Alexander Schmid , Manuela HunzikerManuela Hunziker , Cédric PoyetCédric Poyet , Michel DaudonMichel Daudon , Olivier TraxerOlivier Traxer , Daniel EberliDaniel Eberli , and Etienne Xavier KellerEtienne Xavier Keller View All Author Informationhttps://doi.org/10.1097/01.JU.0001008720.96896.83.13AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: A novel pulsed thulium:yttrium-aluminum-garnet (p-Tm:YAG) laser has recently been introduced for clinical use. Few in vitro evaluations are available in literature, and all based on artificial stone models – not on human urinary stones. The aim of the present study was to evaluate whether stone dust can be obtained from all prevailing stone composition types using the p-Tm:YAG, including analysis of stone particle size after lithotripsy. METHODS: Human urinary stones of 7 different compositions were subjected to in vitro lithotripsy using a p-Tm:YAG laser with 270 µm silica core fibers (Thulio®, Dornier MedTech GmbH®, Wessling, Germany). A cumulative energy of 1000 J was applied to each stone using one of three laser settings: 0.1J x 100Hz, 0.4J x 25Hz, and 2.0J x 5Hz (average power 10W). After lithotripsy, larger remnant fragments were separated from stone dust using a previously described method depending on the floating ability of dust particles. Fragments and dust samples were then passed through laboratory sieves to evaluate stone particle count according to a semi-quantitative analysis relying on a previous definition of stone dust (i.e. stone particles≤250 µm). RESULTS: The p-Tm:YAG laser was able to produce stone dust from lithotripsy up to measured smallest mesh size of 63 µm in all seven urinary stone composition types. Notably, all dust samples from all seven stone types and with all three laser settings had high counts of particles in the size range agreeing with the stone dust definition, i.e.≤250 µm. CONCLUSIONS: To the best of our knowledge, this is the first study in literature proving the p-Tm:YAG laser to be capable of dusting all prevailing human urinary stone compositions, with production of dust particles≤250 µm. These findings are pivotal for the broader future implementation of the p-Tm:YAG in clinical routine. Download PPT Source of Funding: None © 2024 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 211Issue 5SMay 2024Page: e699 Advertisement Copyright & Permissions© 2024 by American Urological Association Education and Research, Inc.Metrics Author Information Jia-Lun Kwok More articles by this author Eugenio Ventimiglia More articles by this author Vincent De Coninck More articles by this author Mariela Corrales More articles by this author Alba Sierra More articles by this author Frédéric Panthier More articles by this author Felipe Pauchard More articles by this author Florian Alexander Schmid More articles by this author Manuela Hunziker More articles by this author Cédric Poyet More articles by this author Michel Daudon More articles by this author Olivier Traxer More articles by this author Daniel Eberli More articles by this author Etienne Xavier Keller More articles by this author Expand All Advertisement PDF downloadLoading ...