an implanted system for treating sinusitis or allergic rhinitis is provided , wherein the implanted system has a circumferentially extending wall formed of a biodegradable polymer , and the wall includes a plurality of interspaces , with biodegradable fiber bundles containing drugs interspersed in the interspaces . the implanted system formed of the biodegradable polymer can provide a sufficient normal force perpendicular to the external surface during a compression , and prevent the supported channel from being closed after the release in a location for the implantation . the implanted system formed of the biodegradable polymer has an axial internal bore to guarantee the aeration for the nasal cavity after the implantation . the implanted system formed of the biodegradable polymer can be naturally degraded in the nasal cavity . compared with prior stents which cannot directly contact with certain locations of pathological changes , the biodegradable fiber bundles containing drugs carried on the implanted system can reach those locations of pathological changes to optimize the therapeutic effect .