A new transportable shock-wave lithotripsy machine for managing urinary stones: A single-centre experience with a dual-focus lithotripter

Marco De Sio, Riccardo Autorino, Giuseppe Quarto, Salvatore Mordente, Francesco Giugliano, Ferdinando Di Giacomo, Fabio Neri, Carmelo Quattrone, Domenico Sorrentino, Renato De Domenico, Massimo D'Armiento

Research output: Contribution to journalArticlepeer-review


OBJECTIVE: To assess the efficacy and safety of a transportable extracorporeal shock wave lithotripsy (ESWL) machine, the Modulith SLX-F2 TM (Storz Medical Italia, Rome, Italy), in the management of solitary urinary calculi. PATIENTS AND METHODS: The study included 233 patients (mean age 51 years; 172 male, 61 female) with symptomatic solitary renal (group A, 170, mean diameter 15.5 mm) or ureteric stones (group B, 63, mean diameter 9.5 mm) treated in a tertiary care institution. Exclusion criteria for the analysis were: pelvi-ureteric junction obstruction, multiple stones, stone diameter >2 cm, stones in a lower calyx with unfavourable anatomy, active infection, or impacted ureteric stones. Selected patients had ureteric stenting before treatment, and all patients were treated with no anaesthesia. Hospitalization, complications and subsequent auxiliary procedures were evaluated. Patients were assessed after a single ESWL session and after 3 months by a plain abdominal film and renal ultrasonography. Stone-free status was defined as no evidence of calculi, and clinical success as the presence of stone fragments of 1 cm were statistically significant (P <0.05). Most patients reported that pain during ESWL was mild to moderate and easily tolerated. Only minor complications occurred, with an overall complication rate of 3.8%. CONCLUSIONS: This transportable lithotripter is a safe and effective device for managing solitary stones throughout the urinary tract. Its main advantage is represented by the dual-focus system. Moreover, it shares with other contemporary machines several important features such as outpatient setting, no need for anaesthesia, easy patient positioning, and the capability of ancillary procedures.

Original languageEnglish
Pages (from-to)1137-1141
Number of pages5
JournalBJU International
Issue number5
Publication statusPublished - Nov 2007


  • Dual-focus system
  • Extracorporeal shockwave lithotripsy
  • Stones
  • Treatment
  • Urolithiasis

ASJC Scopus subject areas

  • Urology


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