Table of Contents
Diagnostic and Therapeutic Endoscopy
Volume 1, Issue 4, Pages 229-232

Initial Experience of Endoscopic Phonosurgery With a Prototype of the Therapeutic Rhinolarynx Electronic Endoscope

1Department of Otolaryngology, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan 8-1, 2-chome Minamiohtsuka, Toshima-ku, Tokyo 170, Japan
2Department of Otolaryngology, Keio University School of Medicine, Tokyo, Japan 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan
3Department of Otolaryngology, Juntendo University School of Medicine, Tokyo, Japan 1-1, 2-chome Hongo, Bunkyo-ku, Tokyo 113, Japan

Received 22 June 1994; Accepted 25 September 1994

Copyright © 1995 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We performed endoscopic phonosurgery in a patient with a laryngeal lesion using a prototype of the therapeutic rhino-larynx electronic endoscope connected to a video processor (Asahi Optical Co., Ltd.). This therapeutic electronic endoscope differs from the fiberoptic endoscope, because it contains an instrument channel and a miniature television camera attached to the tip of the endoscope, consisting of a small light-sensitive CCD chip. The dynamic image provided by this system is superior in resolution to that obtained by conventional flexible laryngofiberscopes. Using this therapeutic electronic endoscope and flexible forceps, we succeeded in removing a vocal fold polyp. This endoscope can be passed through the nasal passage into the laryngeal cavity. The therapeutic electronic endoscope is introduced and a clinical case is presented.