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Novel mouth guard for safe endoscopy in the COVID era
COVID-19 is a disease caused by a novel coronavirus (SARS-CoV-2), which is chiefly transmitted through respiratory secretions, aerosols, and contaminated surfaces .
Endoscopy is an aerosol-generating procedure and thus carries a significant risk of transmission of aerosol-borne diseases to the endoscopist and staff . During endoscopic procedures, a wide open space is left between the mouth guard and the endoscope, through which large quantities of aerosols escape, increasing the risk of infection.
We have made a few changes in the mouth guard to prevent exposure to aerosols and allow endoscopy to be carried out safely. The elements of the novel mouth guard are: a standard mouth guard, a baby feeding bottle, a feeding bottle nipple, and a triple-layer mask ([Video 1]).
Video 1 Novel mouth guard for safe endoscopy.
Take a plastic feeding bottle and cut off the upper end at the neck. Fix this upper end of the bottle to the mouth guard ([Fig. 1]). Then take the nipple and make a small slit across its top ([Fig. 2]). Invert the nipple ([Fig. 3]), place it in the bottle neck, and screw down the collar tightly ([Fig. 4]). Then take a surgical mask, cut a hole in the middle of it, and fix the assembly into the mask ([Fig. 5]).
Place the novel mouth guard inside the patient’s mouth and perform endoscopy with all due precautions and necessary protective equipment. The nipple inside the device acts as a perfect valve and prevents aerosols from escaping ([Video 1]). We have been able to carry out both diagnostic and therapeutic endoscopies with these changes. We have demonstrated the efficacy of our device by performing a simple experiment simulating endoscopy and aerosol generation ([Video 1]).
Our device is cheap, easy to make, reusable, and allows us to do endoscopy more safely during this COVID era.
Endoscopy E-Videos is a free access online section, reporting on interesting cases and new techniques in gastroenterological endoscopy. All papers include a high
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This section has its own submission
17 December 2020 (online)
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- 1 del Rio C, Malani PN. COVID-19 – new insights on a rapidly changing epidemic. JAMA 2020; 323: 1339-1340
- 2 Johnston ER, Habib-Bein N, Dueker JM. Risk of bacterial exposure to the endoscopist’s face during endoscopy. Gastrointest Endosc 2019; 89: 818-824