Clinical anatomy : official journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists
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The larynx and its associated structures derive their chief source of innervation from the superior and recurrent laryngeal nerves. Surgery of the larynx requires a sound knowledge of the normal anatomy as well as variations that may be encountered in this region. ⋯ In addition, we report on bilateral innervation of the respective ipsilateral aryepiglottic, transverse, and oblique arytenoid muscles by the internal laryngeal nerve, which is contrary to the classical descriptions of this nerve. The anatomic features are described and clinical implications are highlighted.
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A new instrument for coniotomy was developed and tested with cadaver experiments. The instrument should be simple, easy to handle, and should not have the various drawbacks of the existing devices. The new instrument was tested by 17 medical students and medical doctors on fresh human cadavers. ⋯ After entering the larynx, the tube can be connected to an inflating bag. The correct seat of the tube was tested by inflation, with a calibrated probe or with laryngoscopy. The results of our tests encourage the development of this new instrument for industrial production.