Sinopsys® Lacrimal Stent Indicated for Sinus Irrigation

Inclusion Criteria: * Investigator has determined that the potential study subject has moderate to severe chronic rhino sinusitis with ethmoid involvement and has failed medical therapy prior to enrollment. * Age ≥22 years The potential study subject meets the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) criteria for chronic rhino sinusitis (Rosenfeld, et al, 2007) * 12 weeks or longer of two or more o f the following signs and symptoms: * Mucopurulent drainage (anterior, posterior or both) * Nasal Obstruction (congestion) * Facial pain-pressure-fullness, or * Decreased sense of smell and Inflammation si documents by one or more of the following findings: * Purulent (not clear) mucus or edema in the middle meatus or ethmoid region * Polyps in nasal cavity or the middle meatus, and/or * Radiographic imaging showing inflammation of the paranasal sinuses * SNOT-20 total raw score ≥ 41 * Non-Contrast CT scan (coronal view) confirms depth of olfactory fossa is Keros classification 1or 2 (Gauba, Sleh, Dua, Agarwal, Ell, \& Vize, 2006) * The potential study subject is capable of understanding and executing written informed consent (IC) Exclusion Criteria: * Sinus opacification score of ≤ 8 or ≥ 18 measured using the CT derived Lund-Mackay scoring system * Isolated sinus disease evident on Non-Contrast CT scan that would unlikely to respond to target ethmoid treatment (e.g., isolated sphenoid or frontal disease). * Polyposis scored as 3 using t…