Interim assessment performed after 14 patients provided evidence that further enrollment was not required to achieve intended endpoints of the study.

Evaluation of treatment of the ethmoid sinuses with the Ethmoid Sinus Spacer and Access system

Inclusion Criteria:

1. Age > 21 years old
2. Both male and female
3. Ethmoid disease on CT scan
4. At least one non-ethmoid sinus requiring treatment
5. Failed medical management and symptomatic

Exclusion Criteria:

1. Previous ethmoid surgery
2. Not sufficient room for placement of Spacer
3. Patient requires septoplasty
4. Has received steroid treatment with in 2 weeks
5. Extensive sinonasal osteoneogenesis preventing device placement
6. Sinonasal tumors or obstructive lesions
7. History of facial trauma that distorts sinus anatomy
8. Asthmatic patients with aspirin sensitivity
9. Pregnant or lactating females