Trial of Efficacy of the RetroPerc Device

RetroPerc®-A Prospective, Multi-institutional Trial of Efficacy of the RetroPerc Device

The purpose of this study is to determine the efficacy of RetroPerc® in obtaining renal access for percutaneous nephrolithotomy

Inclusion Criteria:

-Renal pelvis and proximal ureteral stones >10 mm confirmed with non-contrast computed tomography

Exclusion Criteria:

• Suspected pyelonephritis.

• Prior percutaneous nephrolithotomy procedure in affected kidney.

• Mid-ureteral or distal ureteral stones.

• Pregnancy.

• Anatomical abnormal kidney, including:

  • Horseshoe
  • Ectopic