Derevator: a soft tissue elevator for maxillary sinus in endoscopic sinus surgery.

Removal of the soft tissue lesions from the maxillary sinus is sometimes difficult and time consuming in endoscopic sinus surgery. Failure of endoscopic removal may necessitate combination of canine fossa approach and endoscopic approach. Our new instrument, 'Derevator', is designed for easy removal of the pathological soft tissue lesions from the maxillary sinus through middle meatal antrostomy. Derevators are available for both adults and children. Suction-tipped ones are also available.