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Korean Journal of Otorhinolaryngology-Head and Neck Surgery > Volume 32(2); 1989 > Article
Korean Journal of Otorhinolaryngology-Head and Neck Surgery 1989;32(2): 301-6.
Magnetic Control for the Vocal Cord Adduction in the Canine
Hong Shik Choi, MD1, Gill Ryoung Kim, MD1, Kwang Moon Kim, MD1, Yong Jae Park, BA2, Young Mo Kim, MD1, and Jin Woo Choi, MD1
1;Department of Otolaryngology, 2;Medical Engineering, Yonsei University, College of Medicine, Korea
자력을 이용한 성대 내전장치에 대한 실험적 연구
최홍식1 · 김기령1 · 김광문1 · 박용재2 · 김영모1 · 최진우1
연세대학교 의과대학 이비인후과학교실1;의용공학과2;
ABSTRACT

Entirely satisfactory and physiologic solution to adduct paralyzed vocal fold during phonation, coughing and swallowing has not yet been achieved. The authors noticed that velopharyngeal closure took place simultaneously with adduction of vocal folds in order to perform phonation, coughing and swallowing. We devised new laryngeal pacing system to adduct the paralyzed vocal fold utilizing velopharyngeal closure under the magnetic control. Two mongrel dogs were anesthetized and interior of the larynx was exposed using Lynch suspension laryngoscope. A small magnet wrapped by thin silastic was inserted into the nasal side of soft palate via small incision. After making vertical midline neck incision, the pharynx was dissected and the Gaussmeter probe was inserted into the retro-pharyngeal space. The Gaussmeter probe was connected to Gaussmeter and finally to the pacemaker. Electrodes were inserted into the paralyzed adductor laryngeal intrinsic muscles via punctures of the cricothyroid membrane. When the pacing system operated, arbitrarily elevated soft palate to the posterior pharyngeal wall brought about abrupt increase in magnetic force and thus obvious adduction of the paralyzed vocal cord could be seen.

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