A follow up endoscopy four weeks after the stent was placed. The Z-stent consists of a series of stainless-steel wire cages bent into 2-cm-long segments in a "zigzag" configuration. This urethane-covered stent is 18 mm in diameter, with 25-mm flanged ends, and must be compressed into a 28F catheter delivery system prior to placement.The Z-stent has good expansile force, and a new design incorporates an antireflux valve for bridging the gastroesophageal (GE) junction.
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