Comparing Flexible Navigable Suction Ureteral Access Sheath FANS to Traditional Sheath in Kidney and Ureter Stone Surgery

What this Trial Is About

Researchers are comparing the use of a Flexible and Navigable Suction Ureteral Access Sheath FANS with a traditional ureteral access sheath during retrograde intrarenal surgery RIRS for kidney and ureter stones. This randomized controlled trial aims to evaluate which method better aids in stone clearance while minimizing complications related to intrarenal pressure and residual stone fragments. The study addresses ongoing challenges in RIRS, such as managing intrarenal pressure and improving stone-free rates through technological advancements in access sheath design. The study involves two groups one using FANS and the other using a traditional ureteral access sheath UAS. After anesthesia, patients are positioned for surgery and their ureters are dilated. In the FANS group, a flexible suction sheath is navigated into the kidney to aspirate stone fragments during laser lithotripsy, while the traditional UAS group uses a fixed sheath positioned below the ureteropelvic junction. Both groups undergo laser treatment with irrigation pumps, and JJ stents are placed after the procedure. Participants will be monitored for stone clearance using imaging 12 weeks after surgery to measure the stone-free rate. The trial includes assessments of surgical effectiveness and potential complications related to ureteral access and stone removal. Patient health, urine infection status, and renal function are evaluated for eligibility, and the total duration of participation involves preoperative preparation, surgery, and follow-up assessments over several weeks.

A Comparative Study Between the Usage of Flexible and Navigable Suction Ureteral Access Sheath Versus Traditional Access Sheath in Retrograde Intrarenal Surgeries