FIELD: medical technics. SUBSTANCE: bearing in mind reducing traumatic capability of probe when being used in gastric tract investigation, probe comprises elastic tube 1 with sensors set up along its longitudinal axis and reference electrode 15 on its working end. According to invention, elastic tube 1 has side ports 2 and sensors are positioned inside elastic tube at the level of its ports. Each sensor includes casing with two canals 4,5 and groove 7 to accommodate sensitive element on the side of elastic tube port. One of the canals is made as a through-hole, and the other is located between groove and one of the ends of sensor. Sensitive element containing metering pH electrode 8 is made in the form of a plate with central hole closed by membrane 10 with, installed on it, pressure and temperature converters 11 and 12. Probe is introduced into small intestine and correctness of its position is controlled be X-ray specialists. EFFECT: reduced traumatism. 2 dwg
