Relocation of big stone fragments with direct-in scope suction
Tsaturyan A. Ventimiglia E. Musayelyan A. Grigoryan H. Harutyunyan M. Amirjanyan G. Muradyan A. Khaskhazyan M. Peteinaris A. Tatanis V. Liatsikos E. Kallidonis P. Esperto F. Juliebø-Jones P. Tzelves L. Talyshinskii A. Somani B. Pietropaolo A.
December 2025Springer Science and Business Media Deutschland GmbH
World Journal of Urology
2025#43Issue 1
Purpose: To investigate the effectiveness of DISS feature of novel 7.5Fr and 9.2Fr single-use flexible digital ureteroscopes to relocate and evacuate stone fragments (2–5 mm in diameter) without any accessory instruments. Methods: An ex-vivo experimental study on porcine kidney and ureter was performed. Natural calcium oxalate dihydrate stone fragments sized 2–5 mm placed in the upper, middle and lower calyces were used. For each stone in each location 5 attempts were performed. The attempt was defined as successful if stone evacuation was reported while withdrawing the scope through the 12/14Fr UAS. The time collapsing the collecting system was also reported. Results: The time needed to collapse the porcine pelvi-calyceal system (PCS) was 4–5 s for 9.2Fr and 5–6 s for 7.5Fr scope. Evacuation of 2 mm stone fragments occurred in all trials both with 9.2Fr and 7.5Fr scopes. In case of 3 mm stone, evacuation of stone fragments was observed in 3 out of 5 and 1 out of 5 attempts in upper calyx, 5 out of 5 and 3 out of 5 in the middle calyx and 2 out of 5 and 0 out 5 in lower calyx using 7.5Fr and 9.2Fr scope, respectively. Conclusion: The DISS feature of the novel 7.5Fr and 9.2Fr single-use digital flexible ureteroscope can be potentially used not only to aspirate dust but also to relocate and evacuate larger stone fragments up to 4 mm in diameter using only suction. The speed of collapse of the PCS seems to be one of the main predictors of success.
DISS , RIRS , SRS , Stone evacuation , Stone relocation
Text of the article Перейти на текст статьи
Department of Urology, Yerevan State Medical University after M. Heratsi, Yerevan, Armenia
Department of Urology, Erebouni Medical Center, Yerevan, 0087, Armenia
EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, Arnhem, NL-6803, Netherlands
Advancing Suction and Pressure and Innovative Research in Endourology (ASPIRE), Yerevan, Armenia
Division of Experimental Oncology, Unit of Urology, URI, IRCCS Ospedale San Raffaele, Via Olgettina 60, Milan, 20132, Italy
Department of Allergology and Immunology, National Institute of Health after Academician S. Avdalbekyan, Yerevan, Armenia
Department of Urology, University of Patras, Patras, Greece
Department of Urology, Campus Biomedico University of Rome, Rome, 00128, Italy
Department of Urology, Haukeland University Hospital, Bergen, N-5021, Norway
Second Department of Urology, Sismanogleio Hospital, National and Kapodistrian University of Athens, Athens, Greece
Department of Urology and Andrology, Astana Medical University, Astana, Kazakhstan
Department of Urology and Oncology, Fergana Medical Institute of Public Health, Fergana, Uzbekistan
Department of Urology, University Hospital Southampton NHS Foundation Trust, Southampton, SO16 6YD, United Kingdom
Department of Urology
Department of Urology
EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem
Advancing Suction and Pressure and Innovative Research in Endourology (ASPIRE)
Division of Experimental Oncology
Department of Allergology and Immunology
Department of Urology
Department of Urology
Department of Urology
Second Department of Urology
Department of Urology and Andrology
Department of Urology and Oncology
Department of Urology
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026