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Essential equipment: Ureteric stents
Purpose
Ureteric stents are placed across ureteric strictures to relieve ureteric obstruction and restore anatomical drainage from the renal pelvis to the bladder/ileal conduit.
Description
All ureteric stent systems are hollow plastic tubes with a double-ended pigtail configuration ( Fig. 25.1 ). There are differences in materials and delivery systems. Interventional radiologists are usually involved in antegrade stent placement via a nephrostomy. A pusher is used to deliver the stent into position over a suitably stiff guidewire. Some designs incorporate an inner plastic stiffener, which runs through the stent. Either the pusher plugs into the proximal end of the stent or a suture loop is present to allow stent retraction if pushed too far.
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