RU2373850C2 - Diagnostic system for analysis of gas composition of exhaled air - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to field of medical diagnostic equipment, in particular to systems for diagnosing diseases by exhaled air. Diagnostic system for exhaled air analysis includes measuring converter, sample-taking capillary, system of sample supply, outlet capillary, unit of analogue processing and amplification, electronic-analytical unit and unit of information display. Monitoring of consumption booster work is realised due to the fact that outlet of electronic-analytical unit is connected with inlet of control of electronic key unit, and outlet of locking/unlocking of electronic key is included into the circuit of electric supply of consumption booster. With different signal levels on inlet of electronic key control circuit of electric supply of consumption booster is either locked or unlocked.

EFFECT: invention ensures automatic control of consumption booster work.

7 cl, 1 dwg

Description

FIELD OF THE INVENTION

The invention relates to the field of medical diagnostic equipment, and more particularly to systems for diagnosing diseases by exhaled air.

BACKGROUND

Currently, there are technical tools that allow both qualitative and quantitative determination of the level of infection of patients.

A device is known, RU 2 263 468 C2, for non-invasive diagnosis of Helicobacter pylori infection, a sampling device connected by a capillary to a means for drying air, which is connected by a capillary to a sensor, the latter is connected by a capillary to an aspiration device (compressor). The signal output of the sensor is connected to the input of the amplifier, the output of which is connected to the input of the measurement unit, the output of which is connected to the input of the memory unit, the output of which is connected to the input of the processing unit, and the output of the latter is connected to the input of the display unit.

The disadvantage of this device is that the compressor runs continuously and is connected directly to the 220 V 50 Hz network.

Closest to the claimed is a device, RU 30545, for determining the patient's infection rate with Helicobacter pylori bacterium, including an electrochemical cell, a sampling capillary, a sample supply system, a capillary outlet, an analog processing and amplification unit, an electronic analytical unit and an information display unit.

The disadvantages of this device, selected as a prototype, are the direct connection of the compressor to the AC network and the associated need for its manual disconnection from the specified network between examinations.

SUMMARY OF THE INVENTION

In a preferred embodiment, it should be possible to automatically turn on the flow inducer at the beginning and turn off the flow inducer after completion of the patient examination process.

The basis of the present invention is the solution to the problem of controlling the operation of the flow driver.

According to the invention, the solution to the problem of controlling the operation of the flow inducer is implemented due to the fact that the diagnostic system for analyzing the gas composition of the exhaled air, including a measuring transducer, a sampling capillary, a sample supply system, an output capillary, an analog processing and amplification unit, an electronic analytical unit and an information display unit , an electronic key is introduced, the control input of which is connected to the second output of the electronic analytical unit, and the output of the circuit / open circuit is electrically circuit included in the circuit the electrical power consumption of booster so that at different levels of the signal on the electrical supply circuit control input flow boosters or closes or opens.

Other and further features of the present invention will become apparent from the following description and will be illustrated by the corresponding drawings.

BRIEF DESCRIPTION OF THE DRAWING

The drawing shows a block diagram of a diagnostic system for analysis of exhaled air.

DETAILED DESCRIPTION OF THE INVENTION

The drawing shows a block diagram of a preferred embodiment of a diagnostic system for analyzing exhaled air, consisting of a measuring transducer 1, on which a sample supply system 3 (measuring nozzle) is placed, on one side of which a sampling capillary 2 is connected, and on the other hand, an output capillary 4 . An electrical signal proportional to the concentration of the test gas, from the output of the sensor 1 is fed to the input of block 5 of analog processing and amplification, the output of which is amplified and cleaned from noise the signal is fed to the input of the electron-analytic block 6, from the output 6.1 of which is digitized and processed by the program installed in the microprocessor of the electron-analytic block 6; it is fed to the input 7.1 of the information display unit 7 and / or from the output 6.2 of the electron-analytic block 6 , the signal is input to the block 13 of the computer communication interface, the output of which goes to the data input of the computer 14. From the output 6.3 of the block 6 of the electronic analytical signal is fed to the input of the circuit 10 of the electronic key 8, while depending on the signal level at the control input of the electronic key 8, the output of the latter either opens or closes the electric power supply circuit of the flow inducer 9. The flow inducer is powered either from an AC network or from a power supply unit 16. Thus, the flow driver either turns off or turns on and pumps the test sample. In the process of operation, the electronic-analytical unit 6 through the output 6.4 can exchange experimental data or data with the sensor calibration parameters via the bi-directional interface with the input of the memory unit 11. From the output 6.5 of the block 6 of the electronic analytical data with the gain determined during the calibration of the device is supplied to the input of the block 12 of the formation of the gain. Also, the output 6.5 of the block 6 of the electronic analytical is used to set the gain in the block 12 during calibration. The output 6.6 of block 6 of the electronic analytical bi-directional is connected to the input of the block 15 hours of real time. The output 6.7 of the block 6 of the electronic analytical is connected to the output of the block 17 of the control. The output of the parameter control unit 18 of the information display unit 7 is connected to the input 7.2 of the latter. The parameters of the control unit 18 of the information display unit 7 are set from the control unit 17. From the bi-directional input of the control unit 17, the desired parameters of the information display unit 7 are inputted to the bi-directional output 6.7 of the electronic-analytical unit 6, where, in accordance with the program installed in the microprocessor of the unit 6, they are processed and fed in the form of signals to the output 6.8 of the unit 6. From the output 6.8 of block 6, the signals are fed to the input of block 18, in which the elements acquire parameters corresponding to the signals and from the output of block 18 are fed to the input 7.2 of the block 7 of information display, changing its characteristics in accordance with preset parameters to control unit 17. The diagnostic system is powered from the power supply 16. The power source can be an AC network 110/60 V / Hz, 220/50 V / Hz or rechargeable batteries / batteries.

The diagnostic system described above is included in the register of measuring instruments under No. 35293-07. Obtained registration certificate of the Federal Service for Supervision of Health and Social Development No. FS 022a2006 / 43 80-06. The system is implemented as follows:

Transmitter 1 - Sensor 2E-NH3 0-100 mg / m ³ ;

Sampling capillary 2 - polyvinyl chloride tube;

System 3 - measuring nozzle with two fittings (input and output);

Discharge capillary 4 - polyvinyl chloride tube;

Block 5 of analog processing and amplification - implemented on the basis of an active and passive filtering system, the AD8552 chip was chosen as an amplifier;

Block 6 electronic-analytical - implemented on the basis of the analog-to-digital micro-converter ADuC848;

The information display unit 7 is implemented based on the PG12864LRS-ANN-H liquid crystal display;

Block 8 of the electronic key - implemented on the basis of the relay RKP5B T4;

The driver of 9 consumption - Elite 803 compressor;

Key management circuit 10 — implemented based on the BC848 transistor;

Block 11 memory - implemented on the basis of the chip AT45DB642D;

Block 12 formation of the gain - implemented on the basis of a digital potentiometer DS 1869;

Block 13 of the communication interface with a computer - implemented on the MAX 3221-RS232 and CP2102-USB-MOST chips;

Block 14 - Electronic Computing Machine (COMPUTER);

Block 15 hours of real time - implemented on the basis of the DS1393 chip;

Power supply unit 16 - implemented on the basis of a VIPer53 switching power supply control chip and a high-frequency transformer;

The control unit 17 is implemented on the basis of a film keyboard;

Unit 18 for controlling the parameters of unit 7 for displaying information - is based on a digital potentiometer DS1869 and a microcircuit of a power supply for displays DS1050.

Claims (7)

1. Diagnostic system for analyzing the gas composition of exhaled air, including a measuring transducer, on which a sample supply system is placed, on one side of which a sampling capillary is connected, and on the other hand, an output capillary, an analog processing and amplification unit, the input of which is connected to the output of the measuring transducer and the output to the input of the electronic analytical unit associated with the information display unit, characterized in that an electronic key unit, an electronic control circuit the key and the interface unit, and the analog processing and amplification unit contains a gain generating unit, while the corresponding output of the electronic-analytical unit is connected to the control input of the electronic key unit through the electronic key control circuit, and the output of closing / opening the electric circuit of the electronic key is included in circuit of an electric power supply for the flow driver, the inputs of the gain-forming unit and the interface unit are connected to the corresponding outputs of the electronic-analytical loka. 2. The diagnostic system according to claim 1, characterized in that the output of the electronic analytical unit is connected to the input of the memory unit. 3. The diagnostic system according to claim 1, characterized in that the corresponding output of the electronic analytical unit is connected via an interface unit to a computer. 4. The system according to claim 1, characterized in that the output of the electronic analytical unit is connected to the input of the real-time clock unit. 5. The system according to claim 1, characterized in that the corresponding output of the electronic analytical unit is connected to the input of the control unit, made in the form of a keyboard. 6. The system according to any one of claims 1 to 5, characterized in that the inputs of the analog processing and amplification unit, the electronic analytical unit, the information display unit, the interface unit, the memory unit, the gain generating unit, the real-time clock unit, the control unit , the electronic key block is connected to the output of the power supply. 7. The system according to claim 1, characterized in that between the output of the electronic analytical unit and the input of the information display unit, the control unit for the parameters of the information display unit is included.

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