A video introducer (2) is inserted in an endotracheal tube (1) and is retained by engagement of a connector (28) at the rear end of the introducer with a connector (16) inserted in the rear end (13) of the tube. The introducer (2) includes a shaft (21) integral with the connector (28) and having a channel (22) along its length. A cable (34) connected to a video camera (33) at the patient end of the shaft extends along the channel (22) to an electrical connector (35). The forward end (25) of the shaft (21) projects from the forward end (10) of the tube to provide a leading extension for inserting the tube in the trachea.