The peel-away introducer sheath set, originally designed for the antegrade insertion of the silicone rubber Universal stent, also is useful for antegrade or retrograde basketing of ureteral stones, negotiation of a dilated renal pelvis and tortuous ureter with minimal trauma, retrograde flushing of ureteral stones for percutaneous extraction, removal of dislodged stents from the renal pelvis and ureteral examination with a flexible endoscope or rigid ureteropyeloscope.
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Rich et al. (1987) studied this question.
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