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Laryngoscope

Biomedical Engineering

A laryngoscope is an instrument used to examine the larynx and vocal cords and to guide a tube into the windpipe during tracheal intubation. Manuel Garcia, a Spanish singing teacher, is often credited with building the first laryngoscope in 1854, using a small angled mirror placed at the back of his own throat and a hand mirror to reflect sunlight onto it so he could observe his own vocal cords while singing. Later physicians adapted the technique for medical use, and the laryngoscope became a standard tool in anesthesia and emergency medicine for safely inserting a breathing tube.

Facts
Year
1854 1
Significance
used to obtain a view, for example, of the vocal folds and the glottis 1
FAQs

How did Manuel Garcia manage to see his own vocal cords?

He used a hand-held mirror to send sunlight into his mouth and a small mirror at the back of his throat to reflect the image of his vocal cords out.

Manuel Garcia used two mirrors. According to one account, in September of 1854 a flash of sunlight off a window in Paris gave him the idea of using sunlight directed off a mirror to light the back of the throat. He then realized he needed a second mirror, placed at the back of the throat at the right angle, to reflect the image of his vocal cords back out of his mouth. A hand-held mirror sent the sunlight in, and the small mirror in the throat sent the image out.
Connections

In Field

Source Laryngoscopy
Sources
1. Laryngoscopy
  • Body, History section
    In 1854, the vocal pedagogist Manuel Garcia (1805-1906) became the first man to view the functioning glottis and larynx in a living human.
  • Intro
    It is a medical procedure that is used to obtain a view, for example, of the vocal folds and the glottis.
  • In Field: Biomedical Engineering, Categories
    Medical equipment
  • In Group: Patient Monitoring and Diagnostic Instruments, Lead paragraph
    is endoscopy of the larynx, a part of the throat
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