ArticleInternational urology and nephrology2025
Aspiration properties of flexible and navigable suction ureteral access sheath (FANS) and flexible ureteroscope with direct-in-scope suction (DISS): an in-vitro experimental study by EAU young academic urologists (YAU) urolithiasis and endourology working group.
Article in International urology and nephrology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed.
- A novel 7.5 single-use flexible ureteroscope with in-built temperature and pressure sensors: Is there a limit to reliability and safety? An in vivo experimental study.World journal of urology · 2026Article
- Thermal safety during retrograde intrarenal surgery and laser lithotripsy. Changes of intrarenal temperature while using direct-in-scope-suction : an in-vitro study by young academic urologists and EAU endourology sections.World journal of urology · 2026Article
- Ureteral stents are a boon in endourology: we still need them.World journal of urology · 2026Article
- Experimental stone clearance with in-scope suction and flexible and navigable suction access sheaths.BJU international · 2026Article
- Handle with care: ureteral access sheath positioning modulates intrarenal pressure-insights from an EAU endourology ex vivo study using four ureteroscope sizes.World journal of urology · 2026Article
- Ureteroscopy for stone disease in the elderly (≥ 80 years): Outcomes of a multicentre study from YAU and EAU endourology groups.Urolithiasis · 2025Article
- [Critical assessment of single-use endoscopes].Urologie (Heidelberg, Germany) · 2025Review
- Machine learning models to predict the zero-fragment rate and lower pole access with FANS during flexible Ureteroscopy-an EAU section of endourology study.World journal of urology · 2025Article
- Intrarenal pressure management using flexible ureteroscope with direct in-scope suction in combination with different size ureteral access sheaths: an experimental ex-vivo study.World journal of urology · 2025Article
- Article
- Laser fibers and baskets. How do they affect suction and intrarenal pressures using the novel single-use flexible direct in-scope suction ureteroscopes?Central European journal of urology · 2025Article
- Measurement and comparison of intrarenal pressures during retrograde intrarenal surgery using novel flexible ureteroscopes with integrated direct in-scope suction: An experimentalCentral European journal of urology · 2025Article
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20 authors.
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Abstract
purposeTo illustratively evaluate and compare the effectiveness of aspiration of 7.5Fr and 9.2Fr single-use flexible ureteroscopes with direct in-scope-suction (DISS) with a 12/14Fr flexible and navigable suction ureteral access sheath (FANS) in an in-vitro setting.
methodsOur experimental setup included a 6.5-size sterile glove, 2 mm and 4 mm stone fragments, and a porcine ureter. Three experimental scenarios were evaluated in the upper, middle and lower calyx: 1. Suction via 12/14Fr FANS, 2. Suction via 7.5Fr DISS, 3. Suction via 9.2Fr DISS.
resultsEvacuation of the 2 mm stone was reported in all trials regardless of the used instrument. Aspiration and repositioning of the 4 mm fragment was observed from the upper calyx with all instruments. In the middle calyx, stone evacuation was successful in 5 out of 5 trials with 7.5Fr DISS, and 3 out of 5 with 12/14Fr FANS or 9.2Fr DISS. Stone relocation using suction with subsequent evacuation of the 4 mm fragment from the lower calyx was achieved in none of the trials with 12/14Fr FANS and only in 1 trial with 9.2Fr DISS scope whereas it was successful in 4 trials when 7.5Fr DISS was used. Collapse of the pelvicalyceal system (PCS) was more pronounced with the 12/14Fr FANS and 9.2Fr DISS scope (3-4 s) compared to 7.5Fr DISS scope (6-7 s).
conclusionIn this study, the 7.5Fr single-use flexible ureteroscope was found to be superior in terms of stone extraction and relocation, while it seemed to have less impact on the collapse of the PCS compared to 9.2Fr DISS and 12/14Fr FANS.
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