The invention describes an obturation device (1) which comprises: an obturator element (2) which has a shape that comprises a lower portion (21) and an upper portion (22), where the lower portion (21) comprises two parallel lobular cavities (3) in the form of two bottom-closed sacs and is configured to adapt to the anatomy of the front portion of the oropharynx, and where the upper portion (22) comprises a rear wall (4) protruding from rear edges of the lobular cavities (3) and is configured to adapt to the anatomy of the rear portion of the patient's oropharynx, where the obturator element (2) has shape memory； an attachment element (51, 52) joined to the obturator element (2) and configured for coupling to the nasotracheal tube (100)； and a safety element (6) which has an easily visible safety plate (62).
