SU624601A1 - Apparatus for investigating the functional state of gastroenteric tract - Google Patents

Description

The invention relates to the field of medical technology and is intended to study the gastrointestinal tract in health and disease.

A device for examining the functional state of the gastrointestinal tract is known, which contains two pressure sensors, each of which is made up of two chambers separated by a membrane, an open catheter combined with the first chamber of the first pressure sensor, a thin-walled balloon connected to the first chamber of the second pressure sensor , a unit for detecting the movement of the membranes of the pressure sensors and a source of pressure l.

However, such a device makes it possible to judge only absolute intraballoon pressure, which is an integral indicator of the effect of the degree of the stomach or intestine on the balloon and intracavitary pressure, and: The aim of the invention is to separately record contractions and pressures in the gastrointestinal tract.

To do this, two shut-off valves are introduced into the device, through which both chambers of the second pressure sensor are connected to a pressure source, and a pneumatic condenser, the adjustable capacitance of which is connected to the second chamber of the second

pressure sensor, and the unregulated container is connected to the chamber of the first pressure sensor, in the second chamber of which a hole is made to connect its cavity with the atmosphere,

The drawing is a schematic diagram of a device for examining the functional state of the gastrointestinal tract.

The device contains two sensors 1, 2

pressure, each of which is made in the form of two chambers 3, 4 and 5, 6, respectively, separated by a membrane 7, an open catheter 8, combined with a chamber 4, a thin-walled balloon 9, connected to

Claims (2)

camera 6, unit 10 for detecting movement of the membranes 7 of sensors 1, 2 of pressure, pressure source 11, two shut-off valves; 12, 13 through which the chambers 5, 6 are connected to a pressure source 11, a pneumatic condenser 14, a regulable tank 15 of which is connected to the chamber 5, and an uncontrolled tank 16 is connected to the chamber 4, and in the chamber 3 there is an opening a for connecting its cavity with the atmosphere. The device works as follows. After inserting probe 17 into the cavity of the gastrointestinal tract under investigation, the supply pressure from the pressure source 11 is supplied through the shut-off valves 12 and 13 to the thin-walled container 9, both chambers 5 ,, 6 Sensors 2 and adjustable capacity 15 of the pneumatic condenser 14. At the same time, the cylinder 9 acquires jrnpygost and presses against the walls of the cavity under study. After filling the balloon of the sensor chambers and the adjustable capacity of the pneumatic condenser with gas, the supply pressure is cut off with the help of shut-off valves. As a result of the action of the intracavitary pressure on the cylinder, the pressure in it increases, which leads to an increase in pressure in the chamber 6 of the sensor 2. In order to equalize the pressure in both chambers of this sensor, the volume of the tank 15 is varied with the help of a hypno 1.8. Pressure equalization control is carried out according to the readings of the recording instrument. To compensate for the effect of varying intracavitary pressure on the balloon 9 and, accordingly, on the membrane 7 of the sensor 2 from the chamber 6 side, the tube of the open catheter 8 is connected to the unregulated capacity 16 of the pneumatic condenser 14. This does not cause the diaphragm 7 of the pressure sensor 2 to move, as the intracavitary change The pressure at the same time leads to a change in pressure in both chambers of sensor 2 by one and T7 value. The impact on the wall from the side of the cavity under study leads to a change in pressure in it in chamber 6 of sensor 2, which is recorded by a recording device. A change in intracavitary pressure leads to the displacement of the membrane 7 in the pressure sensor 1. This movement is recorded by unit 10. The simultaneous use of a catheter and a thin-walled balloon and the insertion of a pneumatic condenser into the circuit significantly improves the accuracy of measurement due to the interaction of intracavitary pressure and wall motility. As a result of separate and simultaneous recording of the pressure of the wall and intracavitary pressure, reliable information was obtained, allowing to improve the diagnosis of diseases of the gastrointestinal tract. The invention The device for examining the functional state of the gastrointestinal tract, containing two pressure sensors, each of which is made up of two chambers separated by a membrane, opens a catheter combined with the first chamber of the first pressure sensor, a thin-walled balloon connected to the first chamber of the second sensor pressure, a unit that registers the movement of the membranes of the pressure sensors and a source of pressure, characterized in that, in order to separately register contractions and pressures in the gastrointestinal tract, The triple introduced two shut-off valves, through which both chambers of the second pressure sensor are connected to a pressure source, and a pneumatic condenser, the adjustable capacitance of which is connected to the second chamber of the second pressure sensor, and the unregulated capacitance is connected to the first chamber of the first pressure sensor, in the second chamber of which a hole is made to connect its cavity with the atmosphere. Sources of information taken into account during the examination: 1. USSR author's certificate N8 178028, cl. A 61 B 5 / GS, 1964. / f