Conditions: Urinary Calculi
Interventions: Procedure: Performed flexible and navigable suction ureteral access sheath combined with needle perc; Procedure: PCNL
Sponsors: Beijing Tsinghua Chang Gung Hospital
Not yet recruiting Conditions: Urinary Calculi
Interventions: Procedure: Performed flexible and navigable suction ureteral access sheath combined with needle perc; Procedure: PCNL
Sponsors: Beijing Tsinghua Chang Gung Hospital
Not yet recruiting