The Composite Removable Sinus Stent is intended for use in adult patients following ethmoid sinus surgery, tomaintain patency and reduce the need of post-operative intervention or revision surgery. The composite stent isintended to be left inside the ethmoid sinus cavity for up to 28 days. The composite sinus stent provides steadysupport of nasal walls against swelling mucosa, middle turbinate stabilization and prevents obstruction byadhesions. The stent can be removed at any time within 28 days by cooling and self-crimping