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  • Stents designed for deployment into one of the paranasal sinus ducts to provide support and/or maintain patency. These stents may consist of a metallic or, more frequently, plastic tubes. They are available in several different shapes and sizes according to the sinus on which they are deployed (i.e., frontal, ethmoid, or sphenoid) and/or include a self-retention mechanism that may incorporate sutures to prevent migration. Paranasal sinus stents are intended for temporary (e.g., two weeks) ventilation and drainage of fluids from the sinus. They may be manually implanted or delivered using dedicated instruments and/or stent delivery kits (e.g., catheters, deployment guides) and then manually removed after that period of time. The stents are mainly used after functional endoscopic sinus surgery (FESS). Absorbable and/or drug eluting stents are also available.
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