Abstract
A flexible tube of 4.9mm in outer diameter and 2.6mm in inner diameter with the tip angle con trollable was newly produced as an instrument for fiberscopic laryngeal surgery. After the bilateral nasal cavities and the pharyngolarynx anesthetized locally, the flexible tube was inserted into the supraglottic space through a nasal cavity under video monitoring with a laryngeal fiberscope inserted through another nasal cavity. A forceps was pushed out from the flexible tube and approximated to a laryngeal lesion with controlling the tip angle and depth of insertion. The lesion was removed care fully with the forceps. Small polyps and epithelial hyperplasias of the vocal folds were easily removed using the tube. The voice was improved after surgery. The flexible tube was useful also in biopsy of the laryngeal tumors.
