Abstract: In the interior of a human-like dummy and at a suitable port, there is located a support or similar element which will act as the support element for a live-scale model of a region of the digestive system, advantageously comprising the esophagus, the stomach, duodenum and initiation of the jejunum, made from a material which insures imitation both in shape and in color, texture and anatamy of a human digestive system. The device is surrounded at diverse levels by a series of conducting elements, joined together by means of an electric cable whose end is joined to a terminal of an aural alarm, while the opposite terminal of the alarm is joined to a second electric conductor which will follow the complete digestive system. The conductor is fixed by an indefinite number of contacts which surround the digestive system at zones located below the conducting bridges, each one of which will incorporate adjustable contact screws which will facilitate the adjustment thereof.