A ureterolithotomy can be one of the simplest operations in urology, but there are occasions when the removal of a ureteral stone can be difficult. In a difficult dissection of the ends of the ureter, either close to the pelvis or close to the bladder, manipulation can inadvertently force a ureteral stone into the pelvis or into the bladder where its removal may be difficult or impossible without further and unplanned surgery. A stone in the midportion of the ureter may move up or down the ureter during mobilization of the ureter and may be difficult to find. The stone in the ureter may be easy to find but because of infection, obesity, or dense adhesions around the ureter exposure may be difficult.
A new instrument * has been devised which locks the stone in the ureter and prevents its movement up or down without damage to the walls of the
HERSHMAN HA. New Instrument for Ureterolithotomy. Arch Surg. 1960;81(4):676–677. doi:10.1001/archsurg.1960.01300040160032
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