1550 NANOTECHNOLOGY: 1.2F BASKETS FURTHER ENHANCE IRRIGATION FLOW IN FLEXIBLE URETERORENOSCOPY
2013-03-27

You have accessJournal of UrologyStone Disease: New Technology1 Apr 20131550 NANOTECHNOLOGY: 1.2F BASKETS FURTHER ENHANCE IRRIGATION FLOW IN FLEXIBLE URETERORENOSCOPY Stephan Kruck, Ulf Leichtle, Andrea Lorenz, Karl-Dietrich Sievert, Jens Bedke, and Arnulf Stenzl Stephan KruckStephan Kruck Tuebingen, Germany More articles by this author , Ulf LeichtleUlf Leichtle Tuebingen, Germany More articles by this author , Andrea LorenzAndrea Lorenz Tuebingen, Germany More articles by this author , Karl-Dietrich SievertKarl-Dietrich Sievert Tuebingen, Germany More articles by this author , Jens BedkeJens Bedke Tuebingen, Germany More articles by this author , and Arnulf StenzlArnulf Stenzl Tuebingen, Germany More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2013.02.3060AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Ureterorenoscopy (URS) has revolutionized upper urinary tract stone therapy. However, the size of the working channel and the stone baskets limit irrigation flow as well as vision during the application. Therefore, this study aimed to determine further improvements of irrigation flow and impairments of breaking resistance by the use of a new 1.2 French ultra-miniaturized basket. METHODS Irrigation flow measurements were performed in semirigid URS (semiURS, working channel 5F) and in flexible URS (flexURS, 3.6F) in 0°, 90° and 270° deflection with 1.2F, 1.8F, 1.9F and 2.2F baskets and compared to empty channel. Breaking strength of 1.2F, 1.8F and 1.9F baskets were evaluated using a material testing machine. RESULTS Tested baskets affected irrigation flow in semiURS and flexURS (p<0.05). Mean±SEM (standard error of the mean) for semiURS flow rates counted 197.1±2.0, 140.9±1.6, 111.1± 1.5, 98.0±1.3 and 77.1±0.9 ml/min for empty channel, 1.2F, 1.8F, 1.9F and 2.2F baskets (p<.0.05). Using unbent flexURS flow rates of 44.2±0.4, 20.4±0.2, 5.9±0.1, 5.4±0.1 and 1.5±0.1 ml/min for empty channel, 1.2F, 1.8F, 1.9F and 2.2F baskets, were observed (p<0.05). The 1.2F vs. 2.2F basket showed a 13.6-fold increase in flexURS irrigation (p<0.05). The breaking strength decreased with a reduced basket size (1.2F: 6.4±0.46 vs. 1.8F: 16.8±2.79 vs. 1.9F: 32.2±2.74 Newton, p<0.05). CONCLUSIONS Ultra-miniaturized baskets of 1.2F ensured a sufficient irrigation flow as needed for high quality vision in URS stone management. However, miniaturization of the 1.2F basket resulted in a reduced breaking strength compared to larger sized devices which in turn may hamper stone removal by an increased vulnerability. © 2013 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 189Issue 4SApril 2013Page: e635 Advertisement Copyright & Permissions© 2013 by American Urological Association Education and Research, Inc.MetricsAuthor Information Stephan Kruck Tuebingen, Germany More articles by this author Ulf Leichtle Tuebingen, Germany More articles by this author Andrea Lorenz Tuebingen, Germany More articles by this author Karl-Dietrich Sievert Tuebingen, Germany More articles by this author Jens Bedke Tuebingen, Germany More articles by this author Arnulf Stenzl Tuebingen, Germany More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...