A Clinical Study to Evaluate the Safety and Effectiveness of Novabel Bioabsorbable Steroid-releasing Stent for the Chronic Sinusitis
The goal of this clinical trial is to learn about the safety and effectiveness of Novabel bioabsorbable steroid-releasing stent in chronic sinusitis. The main questions it aims to answer are: * The safety of this device for the chronic sinusitis * The effectiveness of this device for the chronic sinusitis Participants will be implanted bioabsorbable steroid-releasing stents after FESS surgery. Participants will be asked to be back to the clinic for follow-up 14 days, 30 days, 90 days, 180 days and 360 days after procedure. Researchers will compare test device and marketed device to see if the safety and effectiveness between these two devices are non-inferior.
• Diagnose with CRS based on Chinese guidelines for diagnosis and treatment of chronic rhinosinusitis (2018), who were scheduled to undergo primary or revision bilateral ESS.
• Have evidence of bilateral sinus based on computed tomographic (CT) scan (Lund-Mackay \[L-M\] score of \<=3 on each side).
• Can understand the purpose of this study and will to join and finish all the follow up according to the study. Sign the ICF.