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Updated: Aug 9, 2026

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
Published on: September 13, 2022
Use of Stone Cone minimizes stone migration during percutaneous nephrolithotomy
W Patrick Springhart1, Yeh Hong Tan, David M Albala
1Comprehensive Kidney Stone Center, Duke University Medical Center, Durham, North Carolina 27710, USA.
Abstract:
We describe a simple and effective method using the Stone Cone to prevent migration of stone fragments into the ureter during percutaneous nephrolithotomy. This maneuver may reduce the need for antegrade ureteroscopy to remove residual fragments, thereby saving time and obviating the need for placement of an occlusion balloon.
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