Biocompatible copolymer ureteral stent: Maintenance of patency beyond 6 months

We previously reported our experience with a ureteral stent made of a new biocompatible copolymer, Percuflex (Medi-tech, Watertown, MA). This soft copolymer offers an improved delivery system for ease of antegrade insertion, the largest available inner lumen for a given outside diameter, good tolerance by patients, and thus far more resistance to migration and fracture. In this article, we report our long-term experience in 14 patients whose clinical circumstances resulted in the Percuflex stent not being replaced at the recommended 6-month interval. Thus, we were able to monitor these patients from 1 to 12 months beyond the suggested time for replacement.