Kidney Stone Clinical Trial
Official title:
Retrograde Intrarenal Surgery With Tip Flexible Pressure-controlling Ureteral Access Sheath Versus Mini Percutaneous Nephrolithotomy for the Treatment of 2-3-cm Kidney Stones
The goal of this observational study is to compare the safety and efficacy between RIRS with tip flexible pressure-controlling ureteral access sheath and mini percutaneous nephrolithotripsy（PCNL） for the treatment of 2-3-cm kidney stones.
Retrograde Intrarenal Stone Surgery (RIRS) has become one of the most common treatments for renal stones. The development of ureteral access sheath (UAS) is a significant advance in RIRS. In recent years, various improvements have been made to UAS, especially the emergence of a suction UAS and a tip flexible UAS. Using the advantages of suction and tip flexible technology, our team developed a tip flexible pressure-controlling UAS, which significantly improves the safety and effectiveness of RIRS. However, the current guidelines can recommend the indication of RIRS in kidney stones less than 2cm, and percutaneous nephrolithotomy(PCNL) is still preferred for kidney stones larger than 2 cm. Therefore, this study is the first to compare the safety and efficacy between RIRS with tip flexible pressure-controlling UAS and mini PCNL in the treatment of 2 to 3 cm kidney stones. ;
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