Abstract: The automatic intubation device described herein consists of an endotracheal tube which can be inserted automatically into the trachea without the use of a laryngoscope or a physician skilled in its use and which will avoid obstructions on the way to the trachea and comprises a combination of: (1) a flexible guide comprising either a flexible tube or rod having no more than a slight curvature in the length thereof, preferably an esophageal tube, and having a male or female adaptor or track running at least a substantial portion of its length and (2) the endotracheal tube to be inserted into the trachea which endotracheal tube may have a substantial amount of curvature therein and also has a female or male adaptor or track complementary to the adaptor of the guide and designed to fit into or onto the adaptor of the guide.