Journal of Clinical Otolaryngology Head and Neck Surgery
The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery
원저

상하 회전 가능한 전자 후두내시경의 개발

왕수건1, 노정훈2,*, 이병주1, 이진춘1, 전계록2, 이상권3, 박찬흠4, 옥정환5, 김태석6
Soo-Geun Wang1, Jung Hoon Ro2,*, Byung-Joo Lee1, Jin-Choon Lee1, Gye-Rok Jeon2, Sang-Kwon Lee3, Chan-Hum Park4, Jeong-Hwan Ok5, Tae-Seok Kim6
1부산대학교 의과대학 이비인후과학교실
2의공학교실
3흉부외과학교실
4한림대학교 의과대학 이비인후과학교실
5(주) NGC 정보기술
6(주) 선광전자
1Department of Otolaryngology, Pusan National University, Busan, Korea
2Biomedical Engineering, Pusan National University, Busan, Korea
3Thoracic and Cardiovascular Surgery, College of Medicine, Pusan National University, Busan, Korea
4Department of Otolaryngology, College of Medicine, Hallym University, Chuncheon, Korea
5NGC IT Ltd, Seoul, Korea
6Sunkwang Electronics Co., Ltd, Seoul, Korea
*교신저자: 노정훈, 602-739 부산광역시 서구 아미동 1가 10 부산대학교 의과대학 의공학교실 전화: (051)240-7533·전송: (051)242-5003 E-mail: jhro@pusan.ac.kr

© Copyright 2005 The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Oct 01, 2005; Accepted: Oct 27, 2005

Published Online: May 31, 2020

ABSTRACT

Purpose: Laryngoscope is a basic equipment for examining the laryngopharynx. The pre-existing rigid laryngoscopes and fiberscopes have some inconvenience. The problems of the current rigid laryngoscopes are as follows: 1) absence of biopsy channel, 2) difficulties in exposing the larynx in cases of severe gag reflex, short neck, and children, 3) very vulnerable, 4) relatively high cost, and 5) not portable. In addition, disadvantages of the fiberscopes are as follows: 1) sometimes it is difficult to fix the tip to evaluate the lesion, especially in oropharynx, and nasopharynx, 2) very high cost, 3) frequent Moire sign (+), and 4) not portable. Authors have developed a portable digital rigid laryngoscope with flexible head for replacing the pre-existing rigid telescope and fiberscope. Methods and Materials: Recently developed high luminescent white LEDs (light emitting diodes) are placed at the head of the endoscope as a light source for the CCD image sensor which is also placed at the head with imaging lenses. This arrangement eliminates the bulky light sources like halogen or xenon lamps as well as the expensive light guiding optical fibers. We adopted non-spherical lens system to prevent peripheral image distortion and Moire sign, and to enhance depth of field. In addition, it can be bent not only to downward but also to upward upto 130°. Results: The advantages of portable digital rigid laryngoscope demonstrated as following: 1) Not only the laryngopharynx but also the nasopharynx, oral cavity, and oropharynx could be obserbed 2) The laryngopharyngeal pathologic lesion could be biosied through biopsy channel, 3) The laryngeal pathology can be easily removed because the flexible part is supported firmly through the combined rigid part. In case of poor laryngeal exposure through suspension laryngoscopy, it can also be easily removed through biopsy channel. 4) it can be checked the air leakage using air pump. Conclusion: Portable digital rigid laryngoscope with rigid body and flexible head has a lot of advantage over simple fiberscope or rigid laryngoscope. It is a very useful equipment especially for otorhinolaryngologists. In addition, it can be applied for thoracoscope, laparoscope, cystourethroscope, colposcope, etc. (J Clinical Otolaryngol 2005;16:275-280)

Keywords: 전자 후두내시경; 상하회전; 반굴곡형
Keywords: Digital; Semiflexible laryngoscope