Related Experiment Video
Updated: Aug 9, 2026

The Rigid Tube as an Alternative in Controlling the Problematic Airway
Published on: June 6, 2020
[Newly developed BONFILS Retromolar Intubation Fiberscope for difficult airway]
Akihiko Maeyama1, Mitsuharu Kodaka, Kaoru Koyama
1Department of Anesthesiology, Saitama Medical Center, Saitama Medical School, Kawagoe 350-8550.
Abstract:
Battery powered BONFILS Retromolar Intubation Fiberscope (BRIF) is a nonflexible fiberscope having the same curvature as the Macintosh laryngoscope for difficult airway. We used this device in two patients; A 65-year-old man with small chin and a 35-year-old man with neck spinal cord injury. Two trials of orotracheal intubation were accomplished easily in 20 seconds. We conclude that BRIF is useful for orotracheal intubation in patients in whom neck extension is contra-indicated.
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