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  • Nasal catheters designed to widen the nasal sinus passages (i.e., sinus ostia) to restore normal drainage and function. These catheters typically consist of a soft plastic tube that is introduced in the sinus passages through a nasal endoscope (i.e., nasoscope); the catheter includes a balloon at its distal tip intended to enlarge the patient\'s sinus openings, clearing the passageways and restoring normal sinus ventilation and drainage. Nasal sinus dilation catheters are typically used during minimally invasive functional endoscopic sinus surgery (FESS) procedures.
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