About this trial
This is a prospective, interventional single blinded, randomized, single-center study designed to compare the efficacy of a ureteral access sheath with integrated suction (FANS) versus a standard ureteral access sheath (UAS) in patients undergoing ureterorenoscopy and laser lithotripsy for renal stones. The hypothesis is that the use of the FANS device improves stone-free rates and reduces postoperative infectious complications compared to the standard sheath.
Eligibility criteria
Qualifiers
Participant is willing and able to provide written informed consent before any study-specific procedures are performed.
Male or female, aged 18 years or older.
Diagnosed with renal calculi ≥5 mm in diameter, confirmed by imaging, and eligible for fURS with laser lithotripsy according to European Association of Urology (EAU) guidelines.
In stable general health and fit for elective endoscopic surgery under general anesthesia.
Disqualifiers
Solitary kidney (monorenal patients).
Untreated positive urine culture or ongoing urinary tract infection not resolved with appropriate antibiotic therapy prior to surgery.
Known anatomical abnormalities of the urinary tract that may interfere with ureteroscopic access or device placement (e.g., ureteral stricture, congenital malformations).
Pregnancy or breastfeeding at the time of enrollment or planning pregnancy during the study period. In all female patients, a Gravindex test is performed on the day of admission; contraceptive measures are not required
Trial design
Treatments tested in this trial
- Standard ureteral access sheath
- Flexible and Navigable Suction (FANS) Ureteral Access Sheath