Clin Endosc.  2022 Jan;55(1):160-162. 10.5946/ce.2021.172.

A Novel Endoscopic Mouthpiece for COVID-19 Prevention

• Hikichi T
• Jun N
• Hamada K
• Nemoto D

• KMID: 2525065
• DOI: http://doi.org/10.5946/ce.2021.172

Figure

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  Fig. 1. Appearance of the new mouthpiece. (A, B) Side view. The mouthpiece is connected to a hat-shaped aerosol droplet guard. (C, D) Front view. The guard prevents aerosolized droplets from exiting the mouth when the patient coughs. The red arrow shows the slit that the scope is passed through.

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  Fig. 2. A comparison of the spread of aerosolized droplets during coughing. (A) Significant droplet diffusion was observed when using a conventional mouthpiece. (B) Significant reduction in the amount of diffused droplets when using the new mouthpiece.

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  Fig. 3. The virtual clinical application of the mouthpiece. (A) Front view. The hat-shaped aerosol droplet guard is larger than a person’s mouth. (B) The aerosol-droplet guard is located 16.5 mm from the mouth and therefore does not affect respiration.

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