Gas side fraction sampler and method of measuring gas main flow sample components concentration (versions)

FIELD: machine building.

SUBSTANCE: proposed system comprises first assembly to direct gas sample from sampling site to gas characteristics measurement site. First assembly contains components to get in contact with gas sample in operation and gas sampling tube. System includes sample analyser area to measure characteristics of, at least, one component in gas sample, and second assembly outside of the first assembly during all time of operation so that all components of second assembly do not get in contact with gas sample. Note here that second assembly comprises pump connected with said tube to feed gas there through into analyser area without contact with gas sample. Second assembly comprises flow measuring device to get data on gas flow sample, gas pressure gage, or whatever combination of pump, flow measuring device or gas pressure gage.

EFFECT: preventing contamination of reusable components, lower production costs, ease of maintenance.

33 cl, 9 dwg

 

The technical field

The present invention relates to a system for sampling a side fraction of the gas having the contour of the sampling gas, which is closed for moving parts and/or components for analysis of the sampling gas. The present invention also relates to a method for measuring the concentration of the sample components from the main gas stream.

Prior art

Device for gas analysis can be used for many applications, including use in medical purposes. Examples of use of the device for gas analysis in medicine include capnography and actigraphy (or oxopropyl). Capnography relates to the measurement of the concentration of carbon dioxide (CO2in the air exhaled by the patient. Actigraphy relates to the measurement of the concentration of oxygen (O2in the air exhaled by the patient. These measurements can provide useful information regarding the health of the patient. In addition, for medical purposes it is possible to control the concentration of the other gases in the exhaled air, including therapeutic gases (such as nitrogen oxide), anesthetic agents (such as halothane) and micro amount of gases used for diagnostic purposes (such as nitric oxide and carbon monoxide, which are usually present at levels that Express the parts per million or parts per billion. These substances in the exhaled air may reflect the concentration of a substance in a patient's blood.

Information provided by capnography used, for example, to identify incidents that may occur during medical procedures, in particular the detection of incidents under General anesthesia. In addition, information provided by capnography used in clinical situations, such as, for example, a cardiac arrest or breathing. Indeed, capnography can provide information in real time regarding the effectiveness of resuscitation during cardiac arrest. Very capnography has multiple applications in medicine during medical procedures, during long-term monitoring of the vital functions of the patient during clinical situations and for other uses in medicine.

Actigraphy also has multiple applications in medicine. Actigraphy measures the approximate concentration of oxygen to vital organs on the basis of measurements in each cycle of breath and can quickly identify threatening hypoxemia due to the reduction of the alveolar oxygen concentration. For example, during hypoventilation oxygen concentration in the air volume at the end of exhalation is changing faster is to eat the concentration of carbon dioxide in the air volume at the end of exhalation. In such conditions, the reaction of pulse oximetry takes much more time.

It was also shown that actigraphy effective in the diagnosis of hypoglycemic or septic shock, air embolism, hyperthermia, excessive positive pressure at the end of exhalation during artificial ventilation of the lungs, the effectiveness of artificial ventilation under constant pressure and even cardiac arrest. During anesthesia actigraphy used in providing routine of the controller of preoxygenation (denitrogenation). It plays a special role in ensuring patient safety by identifying human errors, failures and disconnections. M. Weingarten in an article entitled "Respiratory monitoring of carbon dioxide and oxygen: a ten-year perspective" (Monitoring of carbon dioxide and oxygen in the exhaled air) (J. Clin. Monit. 1990, July 6(3):217-25), which is fully incorporated herein by reference thereto, describes some of the applications monitoring of carbon dioxide and oxygen in the air exhaled by the patient.

Usually there are two main methods of sampling gas for gas analysis. The first is a gas analysis of the main flow or main fractions (i.e., gas analysis does not exhaust stream), which measures the concentration of a gas or gases (for example, in the air exhaled by the patient) in Uch the dimension of the sample, located inside the respiratory gas flow. For example, a patient receiving treatment with use of a ventilator, a patient circuit, passing from the mouth of the patient or the patient, and providing the message of the gas flow between the ventilator and the patient. The gas analyzer in the main thread to measure the concentration of gas or gas within the patient circuit.

The other main method of sampling gas analysis is a gas analysis of the lateral fraction (i.e., gas analysis of exhaust air). Gas analysis side faction transfers the gas away from the area of the sample and measures the concentration of a gas or gases in the displaced sample in a remote area. For example, if a patient receives treatment with use of the ventilator to the patient circuit is connected shunt device/adapter to remove part of the gas concentration. Then the concentration of the gas or gases within the sample can be measured by the device for measuring the concentration of gas and the sample gas can then be removed.

Nature analyzers side faction gas imposes certain requirements in respect of their component parts. Like gas analyzers of the main stream gas analyzers side faction dollars which are to include analytical components (for example, spectroscopic) and the camera samples. The gas is transported to the cell sample, and the gas concentration is measured using analytical equipment. In many cases, equipment is used spectroscopic analysis, which uses the absorption of infrared radiation of interest gases for measuring the concentration of these gases in the sample (e.g., CO2O2, anesthetic funds and so on).

Analyzers side of the gas fraction can also include a device such as, for example, a pump for creating a negative pressure which sucks the gas sample from the sample. In addition, the analyzers side faction gas may include measuring devices pressure measuring pressure inside the device for sampling. Information regarding the pressure inside the device for sampling can be used for measurement and/or correction on impact, which puts pressure inside the device for sampling on the absorption of infrared radiation by gases in the sample. The pressure measurement can also be used to register and/or compensation of pressure drops or other fluctuations inside the tube for sampling and other components of the device for sampling. There may also be other uses for measuring the pressure.

In addition, the analyzers b is a {fraction gas can include devices for measuring gas flow through the device for sampling. Information flow within the device for sampling can be used for adaptation or adjustment of the pump to maintain a constant flow rate within the device for sampling in a variety of load conditions. Constant flow rate may be desirable in the measurement of gas concentration over an extended period of time, because this simplifies the required compensation. You can also use less constant flow inside the device for sampling, but this requires additional compensation calculations. Information about the flow velocity can also be used for other purposes.

In some conditions, the sampled gas can be routed back into the patient circuit after analysis by the analyzer side of the gas fraction. This is sometimes done in situations when the patient uses expensive anesthetic that can save his re-introduction into the patient circuit. In addition, the gas sample taken from the patient circuit, often contains impurities (e.g., mucus, blood, drugs or other materials). The direction of these materials back into the patient circuit is sometimes considered a viable option for placing the sample containing these impurities.

However, when the direction of the sample gas back into the patient circuit with use the of a typical analyzer side fractions of the gas should be caution to prevent contamination of the internal parts of the capnometer. In a typical analyzer side faction gas sample gas comes into contact with the pump parts parts pressure gauge, parts of the flow meter, tubing, water traps and/or other parts of the capnometer. If the analyzer side of the gas fraction to be used in many patients, the patients may be a risk of cross-contamination, if the sample gas is routed back through the connection channel release or purging of highways sampling to maintain their patency. Due to the fact that many of these parts are relatively complex (e.g., pumps, pressure transducers, flow meters, spectroscopic equipment or other complex parts), the cost of replacing them due to the disruption or obstruction as a result of excessive exposure to contaminating materials can be large.

The invention

Accordingly, the aim of the present invention is to provide a system for sampling a side fraction of gas that overcomes the disadvantages of the known device for sampling the side of the gas fraction, a method of measuring the concentration of one or more components of the sample gas taken from the flow in the main gas pipeline, which overcomes the disadvantages of the known methods of sampling side of the gas fraction.

According to the invention is created the system for sampling the side of the gas fraction, containing the first node, adapted to direct the sample gas from the area of the sample gas to the area of performance measurement gas having components in contact with gas breakdown during use and containing tube to move the sample receiving sample gas from the area of the sample gas, and the area analyzer probes for measuring characteristics of at least one component within the sample gas, and the second site is located outside from the first node at all times when using so that all the components of the second node is not in contact with the sample gas, while the second node includes a pump connected with the specified pipe to move the sample gas through it in the region of the analyzer sample without contact with the sample gas, a device for measuring the flow of receiving the information concerning the flow of sample gas through the said tube without contact with the sample gas, a device for measuring the pressure receiving information relative to the pressure of the sample gas inside this tube without contact with the sample gas, or any combination of a pump, a device for measuring flow and device for measuring pressure.

Tube to move the sample gas may contain at least one protrusion adapted for connection to the Airways of the patient.

Tube to move the sample ha is a and the area of the analyzer samples can be made as a single component.

The first node may further comprise an adapter adapted to connect the tube to move the sample gas from the patient circuit, a filter connected with the specified pipe area analyzer sample or with both, a device for removing moisture, coupled with the tube for moving the sample area analyzer sample or them both and adapted to remove moisture from the sample gas, or any combination of the adapter and filter device for removing moisture.

Device for measuring flow can contain one of the optical flow meter, vortex spreading of the flow meter, ultrasonic flow meter or thermal mass flow meter.

The pump may include at least one diaphragm pump, peristaltic pump, vacuum pump, Venturi pump run electroactive polymer.

The area of the analyzer, a sample may contain a cell for the sample gas, having at least two Windows of the optical analyzer integrated in the tube to move a sample at least one electrical contact that provides a physical connection to a gas sensor in the solid state or the sensor surface acoustic waves, or any combination of the cell Windows of the optical analyzer and electrical contacts.

The above system is mA prevents contamination of components, not in contact with the gas, impurities that may be in the sample gas, thereby minimizing the possibility of cross-contamination and deterioration of these components between applications. The system also reduces the cost of manufacturing, operation and/or maintenance and repair system for sampling a side fraction of gas, because contact with the gas components can be easily replaced, while not in contact with the gas components are reused for subsequent measurements.

According to the invention created a method of measuring the concentration of at least one component of the sample gas taken from the main gas stream, containing the following stages:

providing a first node, adapted to direct the sample gas from the area of the sample gas to measure the characteristics of the gas and containing components in contact with gas breakdown during use;

providing a second node located outside of the first node at all times during use so that all the components of the second node is not in contact with the sample gas;

the connection of the first node with the second node;

the movement of the sample gas from the area of the sample gas using the first component of the first node;

using the first component to the second node received the I am using the second node information about the flow of the sample gas without contact with the sample gas, receiving, using the second node information about the pressure of the sample gas without contact with the sample gas or received using the second node information flow and information about pressure;

measuring characteristics of at least one component within the sample gas using the second component to the second node.

The method may further comprise the second component of the second node to move the sample gas through the first component to the first node.

The method may further comprise the following stages:

disconnecting the connection of the first node with the second node after the first measurement process;

remove the first node;

repeated use of the second node with the other the first node when the second measurement process.

The method may further comprise the following stages:

receiving, using the second node of the thread information relating to the flow of the sample gas without contact with the sample gas;

receiving, using the second node information about the pressure of the sample gas without contact with the sample gas, or

receiving, using the second node information flow and information on the pressure.

The method may further comprise filtering the sample gas using the first node, the draining of the sample gas using the first node or filtration is the situation and the draining of the sample gas using the first node.

According to the invention has created a system for sampling the lateral gas fraction containing the contour sampling gas, comprising a tube to move the sample gas receiving a sample of gas from the main gas flow, and the area analyzer sample gas for measuring characteristics of at least one component within the sample gas without contact components analysis with a sample gas, and the pump that generates the pressure difference inside the contour sampling gas for removal of the sample gas from the main gas flow and movement of the sample gas through the tube to move the sample in the region of the analyzer sample without contact with the sample gas.

The system may further comprise a device for measuring the flow of receiving the information concerning the flow of sample gas through the path sampling gas without contact with the sample gas, a device for measuring the pressure receiving information relative to the pressure of the sample gas through the path sampling gas without contact with the sample gas or device for measuring flow and a device for measuring pressure. Information regarding the flow of sample gas through the circuit of the sampling gas is used to control the pump to ensure a constant gas flow through the circuit of the sampling gas.

Device for measuring flow can contain one of the optical flow meter, vortex races is nostradamuses flow meter, ultrasonic flow meter or thermal mass flow meter.

Device for measuring pressure can measure the deformation of the diaphragm, integrated in the tube to move the sample gas to measure the pressure inside the contour sampling gas.

Information about the pressure of the sample gas inside the contour sampling gas can be used to account for the effects of pressure on the measuring characteristics of at least one component within the sample gas.

Characteristic of at least one component within the sample gas may contain at least one of a concentration of at least one component within the sample gas and the partial pressure of at least one component in the inside of the sample gas, or at least one component within the sample gas, expressed in the form of at least one indicator of the percentage, parts per million and parts per billion.

Characteristic of at least one component within the sample gas can be measured using spectroscopy, infrared spectroscopy, luminescence quenching, gas sensor in the solid state, the sensor surface acoustic waves or any combination.

The area of the analyzer, a sample may contain a cell sample having at least two Windows for optical analysis, integrated what's in the tube to move the sample gas, at least one electrical contact that provides a physical connection to a gas sensor in the solid state or the sensor surface acoustic waves, or any combination of the cell Windows for optical analysis and electrical contacts.

The area of the analyzer, a sample may contain at least two Windows for optical analysis.

At least one component characteristic which is measured inside the sample gas may represent at least one of carbon dioxide (CO2), carbon monoxide (CO), oxygen (O2), nitric oxide (NO) and anesthetic funds.

The pump may include at least one diaphragm pump, peristaltic pump, vacuum pump, Venturi pump run electroactive polymer.

Path sampling gas may further comprise a channel release of the sample gas to remove the sample gas from path sampling gas after passing the sample gas through the analyzer sample.

Channel release of the sample gas can return a sample of gas in the main gas flow or move the gas sample into the device to remove.

Tube to move the sample gas may include first and second channels, the first channel is capable of moving the sample gas in the direction of the analyzer samples and vtoro the channel is able to move a sample of gas from the field analyzer sample.

Tube to move the sample gas can contain the area to remove moisture from the sample gas.

The area to remove moisture from the sample gas may contain a hydrophilic section of the tube that removes moisture material, water trap, or any combination thereof.

The system may further comprise an adapter for the removal of the sample gas from the main gas stream, and introducing the sample gas into the path of the sampling gas.

According to the invention created a method of measuring the concentration of at least one component of the sample gas taken from the main gas stream, containing the following stages:

removal of the sample gas from the main gas flow;

moving the sample gas in the analyzer sample through the tube to move the sample gas;

measuring characteristics of at least one component within the sample gas in the field analyzer sample without contact components analysis with gas breakdown;

the movement of the sample gas through the tube to move the sample gas using a pumping mechanism, not in contact with the sample gas.

The method may further comprise the replacement tube to move gas samples for use with the same pumping mechanism.

The method may further comprise obtaining information about the flow of the sample gas without contact with the sample gas, obtaining information about the pressure of the sample gas is without contact with the sample gas or the obtaining of information flow and information on the pressure.

These and other objectives, features and characteristics of the present invention, as well as methods of operation and functions of the elements of the system will become more apparent upon consideration of the following description and appended claims with reference to the accompanying drawings, which form part of the present description, where the same position in the different drawings to designate corresponding parts. However, it should be clearly understood that the drawings are presented only for illustration and description and are not intended to limit the scope of the invention.

Brief description of drawings

Figa is a schematic view of a system for sampling gas in accordance with one embodiment of the invention.

FIGU is a schematic view of a circuit for sampling gas in the system for sampling gas, shown in figure 1.

Figs is a schematic view of a reusable system components for sampling gas, shown in figure 1.

Figa and 2B are a more detailed illustration of the cell sample and measuring the optical device in accordance with one embodiment of the invention.

Figa is a schematic view of a roller system in accordance with one embodiment of the invention.

FIGU is a schema is static view of the peristaltic roller pump in accordance with one embodiment of the invention.

Figure 4 is a schematic view of the center adjustment in accordance with one embodiment of the invention.

Figure 5 is a block diagram of a method of analysis of the sample gas in accordance with one embodiment of the invention.

Detailed description of illustrative embodiments

One aspect of the invention provides a system for sampling the lateral gas fraction containing a circuit for sampling gas in contact with the sample gas, and a set of reusable components that are not in contact with the sample gas path sampling gas. This configuration prevents contamination of reusable components impurities in the sample gas and prevents cross-contamination of reusable components between patients or applications in one patient. This configuration can reduce the cost of manufacture, operation and/or maintenance and repair of reusable components.

Figa illustrates a system 100 for sampling gas in accordance with the illustrative embodiment of the invention. The system 100 includes an adapter 101 to the respiratory tract, the set of tubes 103, cell 105 for the sample, measuring the optical device 107, the device 109 for measuring the flow, the device 111 for measuring pressure, the pump 113, graduation canal, center 117 management and/or other elements.

Figv illustrates the circuit 102 sampling gas, and figs illustrates reusable components 104 used in the system 100, which are in contact with the sample gas. For example, the circuit 102 sampling gas may include the adapter 101 to the respiratory tract, the set of tubes 103, cell 105 for the sample and the discharge channel 115. Reusable components 104 may include those components of the system for sampling gas, which do not come into contact with the sample gas, such as, for example, measuring the optical device 107, the device 109 for measuring the flow, the device 111 for measuring pressure, the pump 113, the center 117 of the control and/or other components.

In some embodiments, implementation of the circuit 102 sampling gas may be disposable and, therefore, can be manufactured to circuit components 102 sampling gas suitable for use in one patient. Themselves are relatively simple and/or inexpensive part of the system 100 for sampling gas, which include circuit 102 sampling gas can be removed when moving from one patient to another, while relatively complex and/or expensive components, including reusable components 104 can be reused in other patients without worrying about cross-contamination between applications.

In other embodiments, implementation of the circuit 102 sampling gas is not necessarily disposable, but you can easily and/or re-clean or sterilize. This can reduce the complexity, costs and/or expenses for the operation of the system 100 for sampling gas, so as to re-sterilization or cleaning need to produce only the components comprising the circuit 102 sampling gas, while components, including reusable components 104, not must withstand repeated sterilization or cleaning (for example, they may be less expensive to manufacture, utilization, maintenance and repair and/or can be longer).

In some embodiments, the implementation of the system for sampling gas can get a sample of gas from the main gas stream 106 via the adapter 101 to the respiratory tract. In some embodiments, the implementation of the main gas stream 106 can represent the contour of the respiratory tract of a ventilator or other medical device that communicates through a fluid with respiratory system of the patient. In these embodiments, the implementation of the adapter 101 to the respiratory tract may include a "T"-shaped connection, "Y"-shaped connection or other interface with the main gas stream 106.

In other embodiments, implementation of the adapter 101 to water telnum paths can serve as an interface with the respiratory system of the patient and can be replaced by a face mask, nasal cannula, nasal adapter, intubation equipment or adapter to it, or other boundaries. You can use other adapters that allow sampling of gas from above or from other gas streams.

A set of tubes 103 may include one or more segments of the tube transfer samples or other pipe, which allows the transfer of the sample gas from the adapter 101 to the respiratory tract to the cell 105 to sample and/or between other components of the system 100 for sampling gas. For example, a set of tubes 103 may include a set of tubes of plastic medical grade, suitable for use in capnography side of the gas fraction.

Cell 105 to the sample and measuring the optical device 107 provides the ability to measure one or more characteristics of one or more specific components within the sample gas. In one embodiment, the measurement of one or more characteristics of the component includes measuring the concentration of a component within the sample gas, the partial pressure of the component within the sample gas, the presence or absence of a component within the sample gas, and/or other characteristics. For example, the cell 105 to the sample and measuring the optical device 107 provides the possibility of measuring the concentration of carbon dioxide (CO 2) in the sample gas. You can also measure the concentration or other characteristics of other components, such as, for example, oxygen (O2), carbon monoxide (CO), nitric oxide (NO), anesthetic means (e.g., halothane gas), impurities, micro gas concentrations, materials in the form of particles or other substances within the sample gas. In one embodiment, if the measured characteristic of the component within the sample gas is a concentration, the measurement can be made, expressed or represented as a percentage of the sample gas, in parts per million in the sample gas or in parts per billion in the sample gas, or other units of measurement.

To measure the characteristics of one or more specific components in the sample gas, the sample gas can pass through the cell 105 for the sample where the measurement of the optical device 107 measure the characteristics of one or more specific components in the sample gas. The cell itself 105 for a sample may include an inlet to allow passage of the sample gas to the analyzer/scope of analysis sample cell 105 for the sample. As described herein, the gas sample may include a continuous gas flow, and discrete measurement characteristics of one or more specific components in the gas stream can be obtained during the period in which the time.

In one embodiment, the system 100 for sampling gas includes a filter (not shown) between the adapter 101 and the cell 105 for the sample to remove impurities or other unwanted materials from the sample gas. In one embodiment, the filter can be integrated into part of a set of tubes 103 between the adapter 101 to the respiratory tract and the cell 105 for the sample. In one embodiment, a filter may be included in the cell 105 to the sample so that the sample gas is passed through the filter before entering the scope of analysis of the sample cell 105 for the sample. You can also use other configurations, including one or more filters in other parts of the system 100 for sampling gas.

Example of filter cells for samples and combinations of filters/cell for samples that are suitable for use in the present invention, is disclosed in application for U.S. patent No. 10/678,692 (publication number US-2004-0065141), in the application for U.S. patent No. 11/266,864 (publication number US-2006-0086254) and in the application for U.S. patent No. 10/384,329 (publication number US-2003-0191405), the contents of each of which are incorporated herein by reference.

The scope of analysis of the cell 105 for a sample may include two Windows. The first window allows transmission of electromagnetic radiation from the measuring optical devices 107 in the scope of analysis. The second window enables responsive the Oia electromagnetic radiation from the analysis after passing through the sample gas.

In one embodiment, measuring the optical device 107 includes at least a source node and a node of the detector. In one embodiment, one or more specific components, characteristics which are measured include CO2. As stated above, it is possible to measure the characteristics of other components. In one embodiment, infrared radiation is used for measuring characteristics of components in the sample gas. In this embodiment, the detector may include a node of the infrared detector and the source node may include a source of infrared radiation.

Figa and 2B represent a more specific illustration of a variant embodiment of the invention, where the cell 105 sample is placed between node 201 source and the node 203 of the detector measuring the optical device 107. As indicated above, in some embodiments, the implementation of the node 201 source can emit infrared radiation to identify specific components in the sample gas. Infrared radiation emitted by the node 201 source may be pulsed or continuous. If infrared radiation is constant, you can use mechanical vibration transducer (not shown). The node 203 detector may include a detector sensitive to infrared radiation, such as, for example, the R, the detector of the selenide of lead.

Cell 105 for a sample may be located between node 201 source and the node 203 of the detector so that the infrared radiation emitted from the node 201 source, passed through the first window of the cell 105 for samples in the scope of analysis of the sample cell 105 for the sample. Each specific component present in the sample gas may then absorb infrared radiation of certain wavelengths of the emitted infrared radiation when it passes through the region of the sample analysis. Then the remaining infrared radiation released from the cell 105 to the sample through the second window. The node detector 203 detects the remaining infrared radiation. In one embodiment, the node 203 of the detector sends a signal to the processor or controller of the center 117 of the control, which then determines the wavelengths of infrared radiation absorbed components within the sample gas. This information is used to determine the concentration of CO2and/or another component within the sample gas.

In one embodiment, the cell 105 for a sample may include a cell sample used Respironics LoFlo™ C5 Sidestream System. Additional information regarding cell sample, measuring optical devices, and other items that you can use with the devices and methods according to the invention, it is possible to find psavke in U.S. patent 10/384329.

In some embodiments, the implementation of the cell 105 sample should not represent a separate component of the system 100 for sampling gas, but may include a window for intake and release of radiation and/or analysis of samples, which are part of or integrated into part of a set of tubes 103.

As described herein, measurement of the optical device 107 can measure the concentration or other characteristics of one or more components within the sample gas without coming in contact with the gas breakdown. Themselves any impurities within the sample gas is not in contact with the measuring optical devices 107, so that the measuring of the optical device 107 are not contaminated gas breakdown. Therefore, the use of a measurement optical devices 107 in subsequent capnography applications do not expose patients to the impact of polluting materials from previous patients.

Although the measuring part of the system 100 for sampling gas is illustrated in the drawings in the form measurement optical device 107, the invention can use other methods of measurement, including the use of other devices or appliances. For example, in one embodiment, the measuring portion of the system 100 for sampling gas may include a device quenching of luminescence. In these variants of the Ah implementation of the scope of analysis of the sample cell sample may include a hole, hosts box that facilitates the identification of quenching of luminescence.

The quenching of luminescence is defined as the redistribution of excitation energy without radiation through interaction (electron energy or charge transfer) between the radiant form and the quencher and is a technique that was used for measuring the concentration of gases such as oxygen (or other gases). The window, which often serves as a sensor, includes a polymer membrane in which the dispersed luminescently composition, such as a porphyrin dye. The sensor membrane is a mediator, which is adjustable, it provides interaction between the dye and gas. Functional sensor dye dispersed in a polymeric membrane, and a gas, such as oxygen diffuses through the polymer. When using quenching of luminescence to measure the concentrations of oxygen material is excited to luminescence. After exposure to luminescense material gas mixture comprising oxygen luminescence extinguished, depending on the number (i.e., concentration or fraction) of oxygen is exposed to luminescently material, or the amount of oxygen in the gas mixture. Accordingly, the speed reduction of the amount of luminescence or damping of lumines is entii luminescing material (i.e., the amount of light emitted luminescently material) corresponds to the amount of oxygen in the gas mixture. Additional information concerning the quenching of luminescence can be found in U.S. patent No. 6325978, which is fully incorporated herein by reference thereto.

Typically, the quenching of luminescence requires the emission of excitation radiation from the source toward the material, coated with or containing materials that provide the chemistry of luminescence, which can be redeemed for one or more types of gas to be measured, or is specific to them (for example, oxygen, carbon dioxide halothane gas and so on). Excitation radiation causes excitation of the material and the emission of electromagnetic radiation with a wavelength different from the excitation radiation. The presence of one or more gases of interest dampens or reduces the amount of radiation emitted from a fluorescent material. The amount of radiation emitted from a fluorescent material is measured by a detector and compared with the amount of radiation emitted by the luminescent material, in the absence of one or more quenching gases, to facilitate the determination of the number of one or more defined, absorbing gases in the air exhaled by the patient.

It is envisaged that the same the cell sample may include electrical contacts that provide the possibility of physical messages with gas sensors in the solid state, such as sensitive semiconductor gas sensors solid state sensors surface acoustic waves. Floor sensor data of various polymeric materials (which selectively absorb various gases) provides the possibility of detecting a gas changes the frequency of the surface acoustic waves. The manufacture of these devices can be quite expensive, and they provide the possibility of measuring range of gases and trace elements.

In one embodiment, the system 100 for sampling gas can also include a device 109 for measuring flow. In some embodiments, the exercise device 109 for measuring the flow can be a device that measures the gas flow within the circuit 102 sampling gas (for example, the volume of gas passing through the circuit 102 sampling gas over time). Measurement of gas flow within the circuit 102 sampling gas assists in maintaining a constant flow rate of gas through the path sampling gas. For example, if the gas flow through the circuit 102 sampling gas becomes too high or too low, as detected by device 109 for measuring flow, the pump 13 may be configured (e.g., accelerated or slowed down) for the correction to the oscillation, thus maintaining a constant flow rate within the system 100. Constant flow rate can be set to register the exact profile of the characteristics of the component in the exhaled breath of the patient air over time (it may be possible to correct for errors caused by unstable flow rate, if known flow rate).

In some embodiments, the exercise device 109 for measuring the flow can measure the gas flow within the circuit 102 sampling gas without contact with the gas stream. As stated above, this prevents contamination of the device 109 for measuring flow and provides the possibility of using path sampling gas, which is completely closed from reusable components 104 of the system 100.

In one embodiment, the device 109 for measuring the flow may include an optical flow meter. For example, in one embodiment, an optical flow meter can measure the flow of gas correlation of the interference signals produced by coherent laser light (or other electromagnetic energy)passing through the gas flow within the circuit 102 sampling gas. Optical flow meter with correlation of the interference signals of this example includes at least two laser beam that p is omitted in the transverse direction through the gas flow within the circuit 102 sampling gas (for example, through the set of tubes 103), the area of the set of tubes 103, or another part of the circuit 102 sampling gas, through which are passed the laser beams may include two or more optical Windows that provide each of these laser beams are able to enter and exit the circuit 102 sampling gas at the same time passing transversely through the gas stream. After each of the laser beams out of the circuit 102 sampling gas, it is detected by the detector associated with the device 109 for measuring flow. As each of the laser beams passes through the gas stream, they are in contact with turbulence within the gas stream. Contact with this turbulence creates interference fringes, which can be detected by the detectors associated with the device 109 for measuring flow. The analysis of these interference fringes can detect when the same plot of turbulence passes each of the paths of the laser beams. The time spent on playing the same plot of turbulence through the path of laser beams is measured and used along with the known spacing between the paths of laser beams, to determine the speed of the flow inside the circuit 102 sampling gas.

For more information regarding run by the laser optical flow meter, such as rashomama is, described in this document can be found in U.S. patent No. 6683679, which is fully incorporated herein by reference thereto. Information about the optical flow measurements and other types of measurements that can be used with the devices and methods according to the invention can be found in the application for U.S. patent No. 60/808,312, entitled "Airway Adaptor with Optical Pressure Transducer and Method of Manufacturing a Sensor Component (Adapter to the respiratory tract with optical pressure transducer and a method of manufacturing a component of the sensor), which is fully incorporated herein by reference to it. The previous example of the optical flow measurements is only illustrative. You can use other types of optical flow measurements.

Another example of a device 109 for measuring flow, which is not in contact with the sample gas, is a vortex distribute the flow meter. Vortex distribute the flow meter may include a sensor, which is located transversely across the gas flow within the circuit 102 sampling gas (for example, parts of a set of tubes 103). The sensor may include, for example, fiber-optic element, which is included in the circuit 102 sampling gas in a direction transverse to the gas flow (for example, orthogonal to the main axis of the cross section set of tubes 103, through which it passes), extending poperen is through the gas flow and similarly out of the loop 102 sampling gas. The gas flow within the circuit 102 sampling of gas past the sensor causes the oscillation sensor, as turbulent eddies propagate downstream from the sensor. The detector associated with the device 109 for measuring flow, detects oscillation and frequency of oscillation of the sensor. The frequency of oscillation is possible to calculate the flow velocity inside the contour 102 of the sampling gas. For more information on vortex distributor of flowmeters can be found in U.S. patent No. 4706502 and 4475405, which are both fully incorporated herein by reference. Description run fiber optics vortex distribute the flow meter is only illustrative. You can use other types of vortex distributor of flowmeters.

As indicated above, the use of vortex distribute the flow meter may include a sensor which comes into contact with the sample gas. Thus, the vortex sensor distribute the flow meter may be contaminated as a result of this contact.

However, the detector or other components of the vortex distributor of flowmeters should not come in contact with the sample gas in the circuit 102 sampling gas. In some embodiments, the implementation of some or all of the detector or other components of the vortex propagates flowmeter can be telno from the sensor, used to identify the flow, so that the sensor is essentially part of the circuit 102 sampling gas, and not part of the unit 109 for measuring flow.

In some embodiments, implementation of the circuit 102 sampling gas can be produced incorporating the sensor. In other embodiments, the implementation of sensors that are removable with vortex spreading of the flow meter can be included in the circuit 102 sampling gas before use. The detector or other components of the device 109 for measuring the flow can be connected to a disposable sensor during use in a patient and can be disconnected and re-attached to another sensor of the other circuit 102 sampling gas for use in subsequent applications. In such embodiments, the exercise device 109 for measuring the flow is not in contact with the sample gas inside the contour sampling gas as the sensor is not considered part of the unit 109 for measuring flow.

You can also use other types of flow measurement. In some embodiments, the implementation can be used flowmeters with one or more parts that come into contact with the sample gas. These types of flow meters may include flowmeters differential pressure flowmeters with changing area, turbine flow meters, lastyearsmodel, rotary flow meters, ultrasonic flow meters, thermal mass flow sensors and/or other types of flowmeters. In these embodiments, implementation, similar to the description of the vortex propagates flow meter, one or more parts that come into contact with the sample gas can be disconnected from the other parts of the flow meter and/or easily cleaned or sterilized.

In one embodiment, the system 100 for sampling gas also includes a device 111 for measuring pressure. The device 111 for measuring pressure can measure the pressure (the force distribution on the area inside the contour 102 of the sampling gas. In some embodiments, the implementation details of the pressure measurement can be used when calculating the concentration of one or more components in the sample gas. For example, the pressure of the gas is running spectroscopic analysis, can change the measured signal when the detected absorbed wavelengths during spectroscopic analysis. There are also other uses of the information about the pressure within the system 100.

In one embodiment, device 111 for measuring pressure can measure pressure circuit 102 sampling gas without contact with the sample gas. As stated above, this prevents contamination of the device 111 for measuring pressure and ensuring that is has the ability to use circuit 102 sampling gas, which is completely closed from reusable components 104 of the system 100.

An example of a device 111 for measuring pressure, which is not in contact with the sample gas, is a device for measuring pressure, triggered by a diaphragm. Such a device may include a detector that detects deformation of the diaphragm, and the amount of deformation of the diaphragm corresponds to the pressure inside the device. For example, part of the circuit 102 sampling gas may include a deformable diaphragm included, for example, in the wall portion of the set of tubes 103 or 105 cells for testing. Increasing the pressure of the sample gas within the circuit 102 sampling gas aperture extends. Then the device 111 for measuring pressure can reveal the degree of deformation/expansion of the diaphragm and to correlate it with the pressure inside the circuit 102 sampling gas. Can be used with other types of devices for measuring pressure, which is not in contact with the sample gas. Additional information concerning devices for measuring pressure, which can be used with the devices and methods according to the invention can be found in the book .Tohyama, M.Kohashi, .Fukui & .Itoh, "A Fiber-Optic Pressure Microsensor for Biomedical Applications," 1997 International Conference on Solid-State Sensors and Actuators (Transducers '97), 1489-1492, which is incorporated into this description by reference.

In some embodiments, implemented the I device 111 for measuring pressure may include one or more parts, that come in contact with the sample gas (for example, the pressure transducer having an element sampling, located in the set of tubes 103). C. these embodiments implement one or more parts that come into contact with the sample gas can be disconnected from the rest of the device for measuring pressure, so they are considered part of the circuit 102 sampling gas, and not part of the unit 111 for measuring pressure. In some embodiments, the implementation of these detachable parts may be disposable. In other embodiments, the realization they can be easily cleaned or sterilized.

In one embodiment, the system 100 for sampling gas can also include a pump 113. Pump 113 may include any device that transports fluid. For example, the pump 113 may create a negative pressure circuit 102 sampling gas so that the gas sample is taken from the main gas stream 106 (for example, from a tube of the ventilator, the respiratory system of the patient or other gas flow) and is sent to the circuit 102 sampling gas through the adapter 101 to the respiratory tract. Example of pump 113, which includes a peristaltic pump below. However, in other embodiments, the implementation for creating a negative pressure, you can use the methods/devices other than the from peristaltic or diaphragm pumps, such as, for example, compressed air, vacuum pump, Venturi pump, run electroactive polymer, or other methods/devices.

In some embodiments, the implement pump 113 not in contact with the sample gas in the circuit 102 sampling gas. The pump 113 is not contaminated gas breakdown and does not require cleaning or sterilization from patient to patient or between uses of the same patient.

In one embodiment, the pump 113 may include a peristaltic roller pump. In one embodiment, the peristaltic roller pump used in the invention may include multiple rollers mounted in the hub and spokes. Figa illustrates the device 300, where many rollers 301 is installed on the end of the spokes 303 connected at the hub 305. Figv illustrates the pump 113, which includes a roller device 300, the abutment surface 307 and part of a set of tubes 103 of the circuit 102 sampling gas. Part of a set of tubes 103 arranged in the abutment surface 307, which in this embodiment includes a concave portion. Then the rollers 301 are rotated around the hub 305 (in this example, the rollers rotate clockwise). When the roller 301 is in contact with the set of tubes 103, it compresses the wall of the set of tubes 103 and moves any of the fluid (e.g. gas) to the inside of the tube in the direction which moves the roller 301. The constant motion of the rollers 301 causes a constant fluid motion in a set of tubes 103 in the direction in which it moves the roller 301. This creates a negative pressure required to suck the sample gas from the main gas stream 106 via path 102 sampling gas. In addition, no part of the pump 113 is indeed not in contact with the sample gas. Therefore, the pump 113 is not contaminated gas breakdown and does not require intermediate sterilization between uses.

For more information about peristaltic pumps can be found in the document Amy Ebelhack, "Peristaltic Pumps - Not Just for Labs Anymore, New Designs Offer Higher Flowrates and Pressure Capacities", originally published in Chemical Processing Magazine, November 2000, which is fully incorporated into this description by reference thereto. This document can also be found on the website http://www.coleparmer.com. Peristaltic roller pump shown in figures 1, 3A and 3B, is only illustrative. You can also use other types of pumps that are not in contact with the sample gas, such as pumps, run electroactive polymer with a removable camera. Electroactive polymers are flexible materials that are capable of converting energy in the form of electric charge and voltage into mechanical force and motion. They provide unique opportunities to integrate functions that R is sdeleni in traditional designs. The pump chamber may be contractile, thus ensuring the integration of the transformation of energy, drive and structures into one structure. Article S. Ashley, entitled "Artifical Muscles" (artificial muscles) (Scientific American, October 2003, p.53-59), which is fully incorporated into the present description by reference, addresses the possibility of electroactive polymers. For more information on pumps of electroactive polymers can be found in the application for U.S. patent No. 10/384,329 (publication US No. 20040068224), entitled "Electroactive polymer actuated medication infusion pumps" (Activated electroactive polymers pumps for infusion of drugs), which is fully incorporated into the present description by reference.

Although figa and 1C illustrate a pump 113 located in a specific configuration with respect to other elements of the system 100 for sampling gas (i.e., downstream from the cell 105 for the sample, measuring the optical device 107, the device 109 for measuring flow and device 111 for measuring pressure), this accommodation is only illustrative. Pump 113 may be placed anywhere relative to the other elements of the system 100, required to transport the fluid through the system 100 in accordance with the requirements of the invention.

In one embodiment, the system 100 for sampling gas that the same includes an exhaust channel 115. Channel 115 may include a connector or other device that connects a set of tubes 103, with a target position of the sample gas. In one embodiment, the target position of the sample gas may include breathing circuit of the patient. For example, the discharge channel can drain analyzed a sample of gas back to the breathing circuit, which was originally taken in the sample gas. As indicated above, this can be done for several reasons, including saving expensive anesthetics or other drugs, to eliminate the need for removal of biological, hazardous substances or other causes.

In one embodiment, the outlet channel 115 may drain analyzed a sample of gas in a disposable device, in which the gas is appropriately removed. In another embodiment, the outlet channel 115 may drain the analyzed sample gas purification system, where the elements of the sample gas can be regenerated before removing gas into the atmosphere. Cleaning is a collection and destruction of anesthetic gases produced from the operating environment. Due to the fact that the number is usually supplied anesthetic gas far exceeds the amount needed for the patient, treatment reduces the pollution of the operating room.

Cleaning can b the th active (applied suction) or passive (exhaust gases passively received by corrugated tubes and out through the louver operating). Active systems require a means to protect the respiratory tract of a patient by application of suction or from a slew of positive pressure. Passive systems require that the patient was protected only from the buildup of positive pressure. Another important difference is that the interfacial boundary purifier can be opened (in the atmosphere) or closed (gases inside the interface section can be communicated with the atmosphere through the valve; a more familiar type). Different types of interphase boundaries have clinical significance. Open the interphase boundary is detected at the gas Julian™, Fabius GS™, MNarkomed 6000™ and S/5 ADU™. Installation Aestiva™ can be open or closed interfacial boundary. Open the interface section may be safer for the patient.

The device purifier may include site gas collection (for example, a tube connected with APL and outlet safety valve), the tube transfer (e.g., 19 or 30 mm, sometimes coded in yellow), cleaning the interfacial boundary, tube removal gas transports the gas from the interface section to the node deletion, node removal (active or passive is more common active uses hospital suction system) and/or other elements.

In some embodiments done by the compliance with the discharge channel 115 may issue analyzed a sample of gas in the atmosphere.

In one embodiment, the system 100 for sampling gas can also include a controller, processor, or "center 117 control, which electronically controls, regulates, supervises and/or provides power to the components of system 100. Figure 4 illustrates the center 117 of the control in accordance with one embodiment of the invention. In one embodiment, the center 117 of the control cycle includes a control application 401 to the processor 402.

Control application 401 may include the application of software-based memory center 117 management. In another embodiment, the control application 401 may include one or more modules a-403n. Modules a-403n may include software modules, providing the ability to manage, regulate, control and other issues related to the system 100 for sampling gas. In particular, the software modules a-403n can control the generation of infrared radiation by node 201 source, to enable the measurement of infrared radiation by the node 203 of the detector to be able to use other measuring devices (devices quenching of luminescence, gas sensors, solid state sensors, surface acoustic waves or other sensors or detectors), to ensure acivate the ability to measure one or more characteristics of one or more components in the sample gas (e.g., to determine the concentration of the component in the sample gas), to regulate the power supplied to the measuring optical devices 107 to manage any optical devices and/or generation of electromagnetic energy that is required for device 109 flow measurements for the measurement of gas flow within the circuit 102 sampling gas, to allow for calculation of gas flow within the circuit 102 sampling gas, to regulate the power supply to the device 109 for measuring flow, to ensure the ability to measure the deformation of the diaphragm in order to calculate the pressure inside the circuit 102 sampling gas, to provide the possibility of calculating the pressure inside the circuit 102 sampling gas, to regulate the power supply to the device 111 for measuring pressure, to regulate the operation of the pump 113 to adjust the supply of power to the pump 113 to enable the user views the sample composition of the sample gas and/or other information through a graphical user interface, to make and receive payments using user input, and/or from other devices (e.g., medical devices), providing the ability to output data to other devices (e.g., display, printer, or other medical equipment) and/or perform other tasks associated with the gas analysis of the m You can combine one or more of the modules a-403n, including the control application 401. For some purposes, it may be necessary not all modules.

In some embodiments, the implementation of the centre 117 management may also include one or more ports 405 input for receiving input from the user (for example, through a keyboard or keyboard console), the devices associated with the system 100 (for example, measuring the optical device 107, the device 109 for measuring the flow, the device 111 for measuring pressure, the pump 113 or other devices), and/or one or more other devices (e.g., other computers or medical devices). In some embodiments, the implementation of the centre 117 management may also include one or more ports 407 output to provide output signals to one or more devices, such as, for example, a display device, one or more devices associated with the system 100 (for example, measuring the optical device 107, the device 109 for measuring flow device 111 for measuring pressure pump 113 or other devices), and/or other computer or medical devices. In some embodiments, the implementation of the centre 117 management may include its own display device 409 for presenting data to the user through a graphical interface the user.

In some embodiments, the implementation of the centre 117 management may also include the interface 411 power supply for receiving power from a DC power source and/or sources of AC power. In some embodiments, the exercise of the power generated in the interface 411 power, can not only be used to provide power to the center 117 of the control, but can also provide power distribution to one or more measuring optical devices 107, the device 109 for measuring the flow, the device 111 for measuring pressure, the pump 113 and/or other elements of the device for sampling gas 100. In other embodiments implement one or more of the measuring optical devices 107, device 109 for measuring flow device 111 for measuring pressure pump 113 and/or other elements of system 100 may have an alternative or independent power sources.

Specialists in this field will be clear that the described herein, the invention can operate in various device configurations. Accordingly, in various embodiments, the implementation can be used and/or to combine more or less of the above components of the device. You should also understand that described in this document functionality can be implemented in the ranks combinations of hardware and/or hardware-implemented software, in addition to computer software or instead.

In some embodiments, the exercise system 100 can include other components. For example, system 100 may include a device for measuring the temperature of the sample gas within the circuit 102 sampling gas in this area is known for a contact and not contact model). In another example, system 100 may include a device for measuring humidity or moisture content present in the sample gas within the device for sampling gas. Information regarding temperature and/or humidity of the sample gas within the circuit 102 sampling gas can be used in the calculation of the absorption of infrared radiation components within the sample gas (for example, enables adjustments that can be made in the presence of water vapor) or can be used for other purposes.

In another example, system 100 may include a segment that is permeable to moisture tube integrated set of tubes 103. For example, in a set of tubes 103 may be included pigtail tube Nafton™. This permeable to moisture or hydrophilic tube may provide an opportunity for the escape of moisture from the sample gas or its entry inside the circuit 102 for sampling gas. In other embodiments, the exercise system 100 can include a water trap or other device for deleted what I moisture or other components of the sample gas before analysis of the sample gas in the cell 105 for a sample.

In one embodiment, one or more parts of a set of tubes 103 may include a tube with double cavity having two separate channel for moving the sample gas. In some embodiments, the implementation tube with double cavity can be used to transfer the sample gas in the direction of one or more components of system 100 (e.g., cell 105 for test device 109 for measuring the flow, the device 111 for measuring pressure, the pump 113 or another component) or from them. For example, the sample gas can move into the cell 105 for the sample in the first channel of the tube and the cell 105 for the sample in the second channel of the tube.

Figure 5 illustrates a method 500, in which the characteristic of the component in the sample gas can be analyzed using the system for sampling gas having the contour of the sample gas, which has no interface with one or more reusable components (for example, a system 100 for sampling gas). In one embodiment, the method 500 may include stage 501, on which the adapter 101 to the airway system 100 are connected to the main gas stream 106 and the outlet channel 115 may be attached to the target portion of the proceeds of the analyzed gas.

At stage 503 may be running the pump 113 to create a pressure difference, which creates a flow of the sample gas in the loop is 102 sampling gas. For example, in one embodiment, the pump 113 creates a negative pressure difference, which draws the sample gas from the main gas stream 106 via connection 101 and moves the sample gas through the circuit 102 sampling gas. As indicated above, in some embodiments, the implement pump 113 not in contact with the sample gas. As described above, the peristaltic pump shown as a pump 113 is only illustrative. Pump 113 may include a diaphragm pump, vacuum pump, Venturi pump displacement under positive pressure, the pump running electroactive polymer, or other pump.

At stage 505, the sample gas can move through a set of tubes 103 to the cell 105 for the sample. At stage 507, while the sample gas is in the analysis of the cell 105 for samples from the node 201 source measuring optical devices 107 may emit infrared radiation or other radiation. The infrared radiation may pass through the area of analysis of samples, including a sample of gas, and be detected by the node detector 203 measuring the optical device 107 net of any infrared radiation absorbed by components of the sample gas. In other embodiments, the implementation characteristics of the components of the sample gas can be measured using measuring techniques, different from the absorption of infrared radiation is possible. For example, you can use the measuring part, other than measuring the optical device 107, such as a device quenching of the luminescence of the gas sensor in the solid state, the sensor surface acoustic waves or other measuring device.

At stage 509 information relative to the infrared radiation detected by the node 203 of the detector, can be directed to the center 117 of the control. On stage 511 one or more components of system 100 may receive the recorded parameters of the environment related to the circuit 102 sampling gas, and transmit this information to the center 117 of the control. These recorded parameters of the environment can be used to account for the conditions in which the measured characteristics of one or more components within the sample gas. For example, in one embodiment, device 111 for measuring pressure can register the pressure relating to the circuit 102 sampling gas. These recorded parameters pressure can be used to compensate for the effects that pressure has on the absorption of radiation by components of the sample gas. You can register and use other indicators of the environment (e.g., flow, temperature, humidity, or other recorded parameters). Stage 511 may be done up until the infrared radiation COI is sketsa and diagnosed at stage 507.

On stage 513 measured characteristics concentration, or other characteristics of one or more components within the sample gas can be calculated center 117 management. In some embodiments, the implementation of these data can be displayed or transmitted to the user otherwise.

At stage 515, the sample gas may be produced in the target position of the sample gas. As indicated above, the target position of the sample gas may include, for example, a cleaning device, the main gas stream 106 from which it was obtained, the removal system, the atmosphere or other target location. In some embodiments, the implementation of the method 500 may return to step 505, where the sample gas is continuously sucked from the main gas stream 106 and analyzed.

The system 100 for sampling gas can be used to monitor in real time or almost real-time concentration, or other characteristics of the sample components in the air exhaled by the patient over a period of time. Specified in the present description "sample gas" may represent a discrete amount of gas, which is within the scope of the analysis cell 105 for samples at this time. In addition, the "sample gas" may refer to a continuous stream of gas which is removed from the basic what about the gas flow 106 and analyzed to determine the concentration, or other characteristics. In some embodiments, the implementation of the analysis of a continuous flow of gas during the period of time can give a graphical representation of the characteristics of one or more samples of air exhaled by a patient during the period of time (for example, "capnogram" the concentration of CO2over a period of time).

Upon receipt of the records of the characteristics of one or more components of exhaled by the patient air during the period of time it is desirable that the gas flow through the circuit 102 sampling gas was maintained at a constant speed. Therefore, during any of the operations of method 500 device 109 for flow measurements can be used to measure gas flow through the circuit for sampling gas and transmitting information relating to the gas flow through the circuit 102 sampling gas to the center 117 of the control. This information can be used to adjust the pump 113 to maintain a constant gas flow through the circuit 102 sampling gas in various load conditions. For example, the filter included in the circuit 102 sampling gas may become partially clogged, therefore, the load on the pump 113 may increase. In another example, the pressure in the main gas stream 106 from which is extracted from the sample gas may increase or decrease. This may cause an increase or decrease of the load on the pump 113. N is the load on the pump 113 can be modified by other factors.

Although the invention has been described in detail for the purpose of illustration based on what is currently considered the most practical and preferred options for implementation, it should be understood that this detailed description is intended exclusively for this purpose and that the invention is not limited to the described variants of implementation, but, on the contrary, it is intended to cover modifications and equivalent devices, which fall under the nature and scope of the attached claims. For example, it should be understood that the present invention provides that to the extent possible, one or more attributes of any option exercise may be combined with one or more features of any other option implementation.

1. System for sampling the lateral gas fraction containing a first node, adapted to direct the sample gas from the area of the sample gas to the area of performance measurement gas having components in contact with gas breakdown during use, and containing the tube to move the sample receiving sample gas from the area of the sample gas, and the area analyzer probes for measuring characteristics of at least one component within the sample gas, and the second site is located outside from the first node at all times when the COI is whether the so, all components of the second node is not in contact with the sample gas, while the second node includes a pump connected with the specified pipe to move the sample gas through it in the region of the analyzer sample without contact with the sample gas, a device for measuring the flow of receiving the information concerning the flow of sample gas through the said tube without contact with the sample gas, a device for measuring the pressure receiving information relative to the pressure of the sample gas inside this tube without contact with the sample gas, or any combination of a pump, a device for measuring flow and device for measuring pressure.

2. The system according to claim 1, in which the tube to move the sample gas contains at least one protrusion adapted for connection to the Airways of the patient.

3. The system according to claim 1, in which the tube to move the sample gas and the analyzer samples made in the form of a single component.

4. The system according to claim 1, in which the first node further comprises an adapter adapted to connect the tube to move the sample gas from the patient circuit, a filter connected with the specified pipe area analyzer sample or with both, a device for removing moisture, coupled with the tube for moving the sample area analyzer sample or them both and adapted to remove moisture from the C sample gas, or any combination of the adapter and filter device for removing moisture.

5. The system according to claim 1, in which the device for measuring the flow contains one of the optical flow meter, vortex spreading of the flow meter, ultrasonic flow meter or thermal mass flow meter.

6. The system according to claim 1, in which the pump comprises at least one diaphragm pump, peristaltic pump, vacuum pump, Venturi pump run electroactive polymer.

7. The system according to claim 1, in which the analyzer sample contains a cell for the sample gas, having at least two Windows of the optical analyzer integrated in the tube to move a sample at least one electrical contact that provides a physical connection to a gas sensor in the solid state or the sensor surface acoustic waves, or any combination of the cell Windows of the optical analyzer and electrical contacts.

8. The method of measuring the concentration of at least one component of the sample gas taken from the main gas stream, containing the following stages:
providing a first node, adapted to direct the sample gas from the area of the sample gas to measure the characteristics of the gas and containing components in contact with gas breakdown during use is;
providing a second node located outside of the first node at all times during use so that all the components of the second node is not in contact with the sample gas;
the connection of the first node with the second node;
the movement of the sample gas from the area of the sample gas using the first component of the first node;
using the first component to the second node for receiving from the second node, information about the flow of the sample gas without contact with the sample gas received from the second node, information about the pressure of the sample gas without contact with the sample gas or received using the second node information flow and information about pressure;
measuring characteristics of at least one component within the sample gas using the second component to the second node.

9. The method of claim 8, further containing a second component of the second node to move the sample gas through the first component to the first node.

10. The method of claim 8, further containing the following stages:
disconnecting the connection of the first node with the second node after the first measurement process;
remove the first node;
repeated use of the second node with the other the first node when the second measurement process.

11. The method of claim 8, further containing the following with the adiya's:
receiving, using the second node of the thread information relating to the flow of the sample gas without contact with the sample gas;
receiving, using the second node information about the pressure of the sample gas without contact with the sample gas or
receiving, using the second node information flow and information on the pressure.

12. The method of claim 8, further containing filtering of the sample gas using the first node, the draining of the sample gas using the first node or filtering and drying of the sample gas using the first node.

13. System for sampling the lateral gas fraction containing the contour sampling gas, comprising a tube to move the sample gas receiving a sample of gas from the main gas flow, and the area analyzer sample gas for measuring characteristics of at least one component within the sample gas without contact components for analysis with the sample gas, and the pump that generates the pressure difference inside the contour sampling gas for removal of the sample gas from the main gas flow and movement of the sample gas through the tube to move the sample in the region of the analyzer sample without contact with the sample gas.

14. The system of item 13, further contains a device for measuring the flow of receiving the information concerning the flow of sample gas through the path sampling gas without contact with about the Oh gas, device for measuring pressure receiving information relative to the pressure of the sample gas through the path sampling gas without contact with the sample gas or device for measuring flow and a device for measuring pressure.

15. System 14, in which the information regarding the flow of sample gas through the circuit of the sampling gas is used to control the pump to ensure a constant gas flow through the circuit of the sampling gas.

16. System 14, in which the device for measuring the flow contains one of the optical flow meter, vortex spreading of the flow meter, ultrasonic flow meter or thermal mass flow meter.

17. System 14, in which the device for measuring pressure is capable of measuring the deformation of the diaphragm, integrated in the tube to move the sample gas to measure the pressure inside the contour sampling gas.

18. System 14, in which the information about the pressure of the sample gas within the outline of the sampling gas is used to account for the effects of pressure on the measuring characteristics of at least one component within the sample gas.

19. The system of item 13, in which the characteristic of the at least one component within the sample gas contains at least one of a concentration of at least one component within the sample gas and Partia inogo pressure, at least one component within the sample gas, or at least one component within the sample gas, expressed in the form of at least one indicator of the percentage, parts per million and parts per billion.

20. The system of item 13, in which the characteristic of the at least one component within the sample gas is measured using spectroscopy, infrared spectroscopy, luminescence quenching, gas sensor in the solid state, the sensor surface acoustic waves or any combination.

21. The system of item 13, in which the analyzer sample contains a cell for a sample having at least two Windows for optical analysis, integrated in the tube to move the sample gas, at least one electrical contact that provides a physical connection to a gas sensor in the solid state or the sensor surface acoustic waves, or any combination of the cell Windows for optical analysis and electrical contacts.

22. The system of item 13, in which the analyzer sample contains at least two Windows for optical analysis.

23. The system of item 13, in which at least one component characteristic which is measured inside the sample gas, represents at least one of carbon dioxide (CO2), carbon monoxide (CO), is ikorodu (O 2), nitric oxide (NO) and anesthetic funds.

24. The system of item 13, in which the pump comprises at least one diaphragm pump, peristaltic pump, vacuum pump, Venturi pump run electroactive polymer.

25. The system of item 13, in which the contour of the sampling gas further comprises a channel release of the sample gas to remove the sample gas from path sampling gas after passing the sample gas through the analyzer sample.

26. System A.25, in which the channel release of the sample gas is able to return a sample of gas in the main gas flow or move the gas sample into the device to remove.

27. The system of item 13, in which the tube to move the sample gas contains first and second channels, the first channel is capable of moving the sample gas in the direction of the field analyzer sample, and the second channel is capable of moving the sample gas from the field analyzer sample.

28. The system of item 13, in which the tube to move the sample gas contains an area to remove moisture from the sample gas.

29. System p, in which the area to remove moisture from the sample gas contains a hydrophilic section of the tube that removes moisture material, water trap, or any combination thereof.

30. The system of item 13, further containing adapter for removal of the sample gas from the main gas flow and suggesting the sample gas path sampling gas.

31. The method of measuring the concentration of at least one component of the sample gas taken from the main gas stream, containing the following stages:
removal of the sample gas from the main gas stream;
moving the sample gas in the analyzer sample through the tube to move the sample gas;
measuring characteristics of at least one component within the sample gas in the field analyzer sample without contact components for analysis with gas breakdown;
the movement of the sample gas through the tube to move the sample gas using a pumping mechanism, not in contact with the sample gas.

32. The method according to p, optionally containing a replacement tube for moving the sample gas for use with the same pumping mechanism.

33. The method according to p, optionally containing obtaining information about the flow of the sample gas without contact with the sample gas, obtaining information about the pressure of the sample gas without contact with the sample gas or the obtaining of information flow and information on the pressure.



 

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5 dwg

FIELD: measurement.

SUBSTANCE: device is comprised of the first and second part. The first part contains the edge piercing the membrane, capillary channel and a hole in the outer surface of the first part. The second part comprises the chamber for processing solution and the membrane closing the chamber for processing solution. Wherein the hole is opened when the first part of the device is initially put into the second part of the device, and the hole is closed when the first part of the device is fully put into the second part of the device. Capillary channel made in the first part of the device is sized for receiving the liquid medium sample. The second part is comprising the chamber for processing solution that can be limited by first and second membranes, wherein the first part gets through the first membrane when the first part is put into the second par in such a way that the content of processing solution chamber is mixed with the content of capillary channel. The tool for piercing the second membrane is made in such a way that the content of processing solution chamber and capillary channel can be forced out of the device. The device can also comprise the plunger with the mechanism for getting through the second membrane in such way that the content of processing solution chamber and capillary channel is forced through the plunger.

EFFECT: increased pressure control in the device when supplying necessary amount of sample into analyzing cartridge.

4 cl, 16 dwg

FIELD: tritium production.

SUBSTANCE: invention relates to the method and device for automatic tritium extraction from atmospheric water vapour through the use of a freeze trap. The method comprises the first stage of condensing water vapour by cooling a section of the freeze trap, and the second stage of recuperating the ice formed during the first stage into liquid condensate. The air is contained within the extraction case which is used to remove water from the extracted air; the cooling section of the freeze trap is also positioned within the extraction case. During the first stage the freeze trap, which is kept at a temperature below 0° C, is activated during a specified period of time with the possibility of ice formation on the freeze trap cooling section. During the second stage the previously cooled section of the freeze trap is heated by stopping the freeze trap cooling, and liquid condensate, which is formed after ice melting, is collected. The device comprises a movable case for air extraction, which includes a pipe coil connected through a pump with an external liquid nitrogen tank, and a water tank positioned under the coil pipe.

EFFECT: device responsiveness improvement; sampling time reduction; prevents contamination of one sample by another sample.

9 cl, 1 dwg

FIELD: engine maintenance.

SUBSTANCE: invention relates to the non-destructive inspection through the radiography of a gas turbine engine blade made from composite materials. A control sample of a blade is manufactured from composite materials to standardise the radiographic inspection of such blades. A three dimensional raw piece is braided from composite materials and elements made from resin are positioned in certain points of the piece. The raw piece is then placed into the casting box and then resin is fed to the casting box to produce the control sample of the blade.

EFFECT: standardisation of the engine blade radiographic inspection for a distinctive flaw - accumulation of the resin inside the blade.

4 cl, 5 dwg, 1 ex

FIELD: chemistry.

SUBSTANCE: method involves collection of initial plankton samples from the water body under investigation, and preparation thereof, said samples containing hydrobionts-bioindicators of radioactive contamination. The resultant samples of said hydrobionts are prepared and analysed, followed by evaluation of the radiation condition of the water body under investigation. The hydrobionts-bioindicators of radioactive contamination of the water body used are sea zooplanktons of the Chaetognath type. One initial plankton sample containing said hydrobionts is collected at any arbitrary or directed given point of the offshore zone under investigation with salinity not lower than 8%. One resultant sample of said hydrobionts is then prepared by collecting from the initial sample not less than 5 zooids of sea zooplanktons of the Chaetognath type. Analysis of the resultant samples of said hydrobionts is carried out through visual examination of outer morphological features which characterise the state of the skin and fins of each separately taken zooid from among those collected. The radiation condition of the investigated offshore zone is carried out by detecting presence or absence from the resultant sample zooids of said hydrobionts, having anomality of said outer morphological features. If the resultant sample has at least one zooid, having damaged skin and/or broken fins, the offshore zone under investigation has radioactive contamination.

EFFECT: simple and shorter method, reduced expenses on implementing the method.

9 cl, 2 ex

FIELD: machine building.

SUBSTANCE: proposed device comprises sealed work chamber, stand, baths, pans, work table accommodating stations with bath positioning devices, pans, movable stand drive equipped with gripper, lifting mechanism and drive, and control unit. Automatic device incorporates also sealed work chamber with sealing side, drying chamber, driven rotation mechanism, stand with "П"-shape handle, stand base is rounded and skewed at 20÷70°. Stand sidewall inner surface supports separators made up of a comb with ledge thickness of 1÷4 and spacing width of 1.1÷2.0 of microscope slide thickness. Movable stand drive incorporates gripper made up of rectangular-section bucket. Note here that gripper moves along circular arc within 0÷40°. Baths and pans are provided with eyelets. Stations are equipped with positioning devices made up of cone pairs with truncated apex and cylindrical location flange, its diameter making 0.80÷0.95 of eyelet diameter. Aforesaid "П"-shape handle has length making 1.1÷1.2 of relation between gripping height and drive arm lifting angle cosine. Bath wall skew makes 5÷20°, wall facing stand drive.

EFFECT: higher efficiency and reliability, ruled out fouling.

1 tbl, 4 dwg

FIELD: physics.

SUBSTANCE: apparatus for stationary collection of water in the ocean bottom layer has a ballast weight on which a water collection chamber is mounted, a pipe made in form of a reinforced hose and connected with the water collection chamber, a buoy to which the top end of the pipe is attached through a sleeve nut, floats and a flexible hose which freely passes through the opening in the float and connected to the buoy. An annular magnet is mounted in the float, and inside the flexible hose there is a cylindrical magnet which is tightly fit to the walls of the house, where the axial magnetic field of the cylindrical magnet is opposite the field of the annular magnet.

EFFECT: invention enables to regularly monitor physical and chemical properties of water at any depth at stationary points with constancy of all collection conditions with low expenses.

1 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: sampling method of fluid from pipeline, at which sampling element with sampling hole is arranged in pipeline and sample is taken through the inlet with the specified flow. At that, passage of sampling hole is increased by the coefficient inversely proportional to 0.6-1, and sample is taken from the flow in the pipeline at average velocity proportional to average flow velocity in the pipeline with proportionality factor from interval of 0.6-1. Pipeline fluid sampling device includes sampling element installed diametrically in the pipeline with the sampling hole oriented towards the flow in the pipeline and made on side surface of sampling element; at that, passage of sampling hole is made in a certain way.

EFFECT: invention allows increasing representativity of the sample, improving the pump operation and reducing electric power consumption.

2 cl, 3 dwg, 1 tbl

FIELD: mining.

SUBSTANCE: mechanical ice drilling bit includes housing on the edge of which detachable cutters are fixed, which are located symmetrically in radial direction where the cutting edge of cutters is turned inward the bit, and core breaker. Cutting edges of cutters are offset relative to each other in radial direction without overlapping each other and equal to 1/n of the cutter width, where n - the number of the bit cutters.

EFFECT: increasing mechanical drilling speed, increasing run drilling, reducing the power consumption of the cutting process owing to decreasing the thickness of the cut layer with each cutter.

1 dwg

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to thoracic surgery, phthisiology and pulmonology. Localisation of bronchus, which ventilates part of lung parenchyma bearing broncho-pleural fistula, is determined. By means of air blower, connected to manometer, positive pressure of air is created only in examined lobar or segmental bronchus below installed Levin's valve. Presence or absence of broncho-pleural fistula, its exact localisation and dimensions are determined by the character of changes of manometer readings.

EFFECT: method increases accuracy of search occlusion of broncho-pleural fistulas of lobar or segmental bronchi.

6 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medicine particularly to allergology and pulmonology and can be used in differential diagnostics of bronchial asthma (BA) - atopic asthma (AA), asthmatic triad (AT) and incipience of chronic obstructive lung disease (COLD). For this purpose respiratory function is checked of a patient and Tiffeneau index is defined. Then cytokines IL-4 and IL-8 concentration in periferic blood and antioxidant transferrin are defined. Further the mathematical model including the examined indexes is made and complex mathematic performance evaluation. On the first stage the regressive function is calculated according to the formula f COLD/BA = 4.1609+ a*(-5.787)+b*(-0.062)+c*(0.01308)+d*(-0.1025) where Tiffeneau index (1 - value >70% of the due values, 0 - value <70% of the due values); b content IL-4 (equivalent units); c content IL-8 (equivalent units); d - transferrin content (equivalent units). Then the potential is calculated in respect to according to the formular P COLD/BA =1/(1+y -fCOLD/BA ) where P COLD/BA is potential COLD occurrence in respect to BA; e=2.718 is the base of the natural logarithm. With P COLD/BA ≥0.5 the probability of COLD occurrence is higher in respect to BA - in this case COLD is diagnosed. If P COLD/BA <0.5 the probability of BA occurrence is higher in respect to COLD. In this case pass to the second stage when the regressive function is calculated according to the formula F AT/AA =-21.847+a*(26.607)+b*(-0.2227)+c*(0.1)+d*(-0.304). After this the probability of AT occurrence in respect to AA is calculated according to the formula PAT/AA =1/(1+e -1AT/AA ) where PAT/AA is the probability of At occurrence in respect to AA. With PAT/AA ≥0.5 the probability of AT occurrence is higher in respect to AA then AT is diagnosed. If P PAT/AA <0.5 the probability of AA occurrence is higher in respect to AT then AA is diagnosed.

EFFECT: means provides timely effective differential diagnostics of bronchial asthma clinico-pathogenetic variants and incipience of COLD for timely pathogenetic treatment of such diseases.

3 ex, 1 dwg

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, in particular to clinical physiology of breathing. Transpulmonary pressure and spirograms are registered at comfortable deep breathing. Two breathing maneuvers are performed by realisation of air flow interruption by a valve at inhalation and at exhalation thrice: during the first breathing maneuver for 0.2 seconds, during the second - for 0.5 seconds with determination of alveolar pressure. Elastic hysteresis is built on the basis of results of the first and second breathing maneuvers, numerical values of elastic hysteresis are determined, and obtained values are compared with each other. If elastic hysteresis values, obtained during the second breathing maneuver, decrease, it is considered to be manifestation of maximal work of intrapulmonary source of mechanical activity, as its numerical value taken is value of elastic hysteresis, obtained during the second breathing maneuver.

EFFECT: method extends arsenal of means for determination of maximal work of intrapulmonary source of mechanical activity.

2 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, in particular to clinical physiology of breathing. Transpulmonary pressure and spirograms are registered at comfortable deep breathing. Two breathing maneuvers are performed by realisation of air flow interruption by a valve at inhalation and at exhalation thrice: during the first breathing maneuver for 0.2 seconds, during the second - for 0.5 seconds with determination of alveolar pressure. Elastic hysteresis is built on the basis of results of the first and second breathing maneuvers, numerical values of elastic hysteresis are determined, and obtained values are compared with each other. If elastic hysteresis values, obtained during the second breathing maneuver, decrease, it is considered to be manifestation of maximal work of intrapulmonary source of mechanical activity, as its numerical value taken is value of elastic hysteresis, obtained during the second breathing maneuver.

EFFECT: method extends arsenal of means for determination of maximal work of intrapulmonary source of mechanical activity.

2 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: invention refers to medicine, evaluation of a degree of metabolic and cardiorespiratory adaptation of a patient by an anaerobic threshold (AT) power. The AT value is determined by a cross point of oxygen consumption and carbon dioxide elimination curves by means of carrying out ergospirometry and ensuring hypoxic mixed gas inhalation with gradually decreasing the oxygen contents by 2 % at each stage to reach stabilised values of oxygen consumption and carbon dioxide elimination at each stage. Then the AT power is measured by a percentage of oxygen in the inhaled hypoxic mixed gas related to a moment of reaching the AT value. If the AT power is 14 % of oxygen, a degree of patient's adaptation is considered to be low, less than 10 % of oxygen - high, while the AT power ranging within 10-14 % of oxygen shows a middle degree of patient's adaptation.

EFFECT: method provides evaluation of a degree of metabolic and cardiorespiratory adaptation of the patients suffering a musculoskeletal disorder, impairments of consciousness, including associating artificial lung ventilation, unable to perform an exercise tolerance test.

3 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine, sanitation, labour protection and is intended for physiologo-hygienic estimation of efficiency of respiratory protective device in natural conditions of labour activity in case of dust pollution of environment. Samples are taken by means of filter individual sampler. Air-inlet of one of samplers is placed inside respiratory protective device for people, of another sampler - outside. Filters of samplers with deposited on them dust are subjected to analysis. Coefficient of dust penetration K is determined. In process of investigation minute volume of respiration and heart rate are continuously registered. Conventional efficiency of said respiratory protective device is calculated by mathematical formula with application of measured parameters.

EFFECT: invention makes it possible to carry out accurate estimation of efficiency of using said respiratory protective device, can be used in their elaboration, as well as for elaboration of labour regimens, optimising load on cardiorespiratory system in conditions of dustiness.

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, in particular, to pulmonology and can be used for predicting dynamics of bronchial asthma (BA) course in pregnant women. Determined are values of volume of forced exhalation per 1 s (VFE1), duration and severity of BA, presence of allergic rhinitis, chronic inflammatory diseases of ENT-organs, ARVD during pregnancy, level of personality anxiety is determined. Discriminant equations "Df1" and "Df2": are calculated: Df1=3.17+0.66·A+0.03·B·0.06·C+0.03·D-1.19·E+1.45·P-0.69·G; Df2=-16.27+1.3·A+0.075·B+0.08·C+0.09·D+0.62·E-0.04·F+0.52·G, where: A is BA severity: 1 - mild, 2 - medium-severe, 3 - severe; B is BA duration in years; C is level of personality anxiety in points; D is VFE1 value in percent to proper values; E is presence (1) or absence (0) of allergic rhinitis; F is presence (1) or absence (0) of ARVD during pregnancy; G is chronic diseases of ENT-organs - presence (1) or absence (0). Obtained values are summed up, and if index is Df1<0, aggravation of BA course during pregnancy is predicted, if Df2<0 - improvement, if Df2>0 - without changes.

EFFECT: method makes it possible to increase accuracy of BA course prediction due to additional introduction of clinical-anamnesis data and quantitative diagnostic indices.

1 dwg, 3 ex

FIELD: medicine.

SUBSTANCE: invention relates to medicine and is intended for diagnostics of diseases of larynx and hypopharynx when carrying out computer tomography. Device contains hollow tube for exhaling air and manometre with scale and arrow, removable replaceable mouthpiece, which tube for air exhaling is provided with. Metal plate is placed with possibility to make contact with manometre arrow when intrathoracic pressure reaches 30-35 mm Hg. Unit of light indication switches on the bulb located on unit of light indication with possibility to light when contact between plate and arrow is closed to signal about correct carrying out Valsalva test and performing computer scanning.

EFFECT: providing possibility to obtain distinct image of pear-shaped sinuses in case of larynx and hypopharynx tumours.

1 dwg, 2 ex

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to accessories for radiation diagnostics. Device contains plastic body with plastic cylinder where movable plastic piston and removable mouthpiece are installed. Plastic cylinder is made transparent and is connected with removable mouthpiece through polyethylene tube with possibility of placing movable plastic piston at the top position in the cylinder with continuous patient's inhalation.

EFFECT: use of the invention makes it possible to increase accuracy of larynx diseases diagnostics during computed tomography due to obtaining a clear image of vocal chords at the time of their greatest divergence.

1 dwg

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine and can be used in device of computer phonendoscope for increase of its work efficiency. In recording of acoustic murmur of quiet breathing breath is hold. From obtained record with application of direct Fourier transform obtained is spectrum of signal, in which isolated is section, where breath was hold. Level of entire record frequencies is lowered by (to) the levels of frequencies of the isolated section. New set of frequencies is obtained, from which by inverse Fourier transform, signal is restored.

EFFECT: method extends arsenal of means for respiratory murmur filtration.

6 dwg, 2 ex

FIELD: medicine; medical engineering.

SUBSTANCE: method involves connecting patient to device via bite-board. The patient makes expiration via tube connected to inlet valve of respiratory sack. The expired air is accumulated in the respiratory sack in the amount of equal to the respiratory sack volume. Timer is set for 15 min after being filled. Microcompressor pumps the air expired by the patient via tube filled with silicagel at constant flow rate. The patient goes on filling the respiratory sack with expired air while the microcompressor is operating. After the timer expires, 0.5-1.0 ml of humidity is obtained from the expired air adsorbed on silicagel. Single-use tube containing silicagel is soldered and kept in frost chamber until its biochemical examination is carried out. The device has airtight respiratory sack having inlet and outlet valves. The inlet valve is connected to tube provided with bite-board. The outlet valve is connected to tube containing silicagel layer.

EFFECT: humidity sampling independence of patient state.

2 cl, 1 dwg

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