Gas analyzer breath pipe with self-cleaning function

Abstract

This utility model discloses a self-cleaning gas analyzer exhalation tube, including a cleaning tube connected to the outlet of a high-pressure gas cylinder. An exhalation pipe is inserted into the end of the cleaning tube, and a monitoring tube is connected to the side curved surface of the exhalation pipe. A carbon dioxide tester for monitoring carbon dioxide concentration is installed on the monitoring tube, and an electric valve for monitoring the internal air pressure of the cleaning tube is installed on the cleaning tube. A controller is electrically connected between the carbon dioxide tester and the electric valve. A carbon dioxide sensor is installed inside the carbon dioxide tester. The carbon dioxide sensor collects the carbon dioxide concentration inside the monitoring tube in real time. This embodiment, through a dual-tube design, achieves simultaneous monitoring and testing, and promptly triggers comprehensive cleaning of each tube, integrating cleaning and disinfection, simplifying the cleaning process, preventing cross-infection, and achieving a faster cleaning rate.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a gas analyzer exhalation tube with self-cleaning function. Background Technology

[0002] A gas analyzer exhalation tube is a tubing device used to collect and transport the exhaled gas of a subject to a gas analysis device. Its main function is to provide a stable and reliable sample for subsequent gas composition analysis. One end of the exhalation tube is connected to the subject's breathing interface, and the other end is connected to the gas analyzer. When the subject exhales, the exhalation tube can collect the exhaled gas and smoothly deliver it to the gas analyzer.

[0003] In practical use, it has been found that reusable or poorly cleaned exhalation tubes can become breeding grounds for bacteria, viruses, and other microorganisms, increasing the risk of cross-infection. If secretions, mucus, or other contaminants remain on the inner wall, they may alter the gas composition, leading to distorted test results. For example, residual carbon dioxide in a breath test may interfere with isotope ratio analysis, affecting the accuracy of Helicobacter pylori infection diagnosis. Therefore, regular cleaning is necessary. Traditional cleaning methods are manual, which is cumbersome, involving cleaning followed by high-temperature sterilization. This not only increases the workload of medical staff but also increases the risk of cross-infection between parts during the cleaning process. It is difficult to clean thoroughly in one go, and the cleaning process is tedious and inefficient. Utility Model Content

[0004] Therefore, this utility model provides a gas analyzer exhalation tube with a self-cleaning function to solve the problems of cumbersome cleaning process and low efficiency caused by cross-infection in the prior art.

[0005] To achieve the above objectives, the embodiments of this utility model provide the following technical solutions:

[0006] A gas analyzer exhalation tube with a self-cleaning function includes a cleaning tube connected to the outlet of a high-pressure gas cylinder, an exhalation tube inserted into the end of the cleaning tube, and a monitoring tube connected to the side curved surface of the exhalation tube.

[0007] The monitoring pipeline is equipped with a carbon dioxide tester for monitoring carbon dioxide concentration, and the cleaning pipeline is equipped with an electric valve for monitoring the internal air pressure of the cleaning pipeline. The carbon dioxide tester and the electric valve are electrically connected by a controller.

[0008] The carbon dioxide tester is equipped with a carbon dioxide sensor inside. The carbon dioxide sensor collects and monitors the carbon dioxide concentration inside the pipeline in real time, and converts the collected value into an electrical signal and sends it to the controller. The controller then controls the opening and closing of the electric valve.

[0009] The air pressure inside the cleaning pipeline gradually increases after the electric valve is opened, forcing the waste gas inside the exhalation pipe to flow to the outlets at both ends for discharge.

[0010] As a preferred embodiment of the present invention, a silicone hose is provided in the exhalation tubing near the cleaning tubing, and a one-way air intake valve is installed at the end of the silicone hose.

[0011] The silicone tubing and one-way air inlet valve are located inside the cleaning pipeline. Air inside the cleaning pipeline flows unidirectionally into the exhalation pipeline through the one-way air inlet valve, allowing air from the high-pressure gas cylinder to flow sequentially into the cleaning pipeline and the exhalation pipeline through the one-way air inlet valve.

[0012] As a preferred embodiment of this utility model, the electric valve is provided with an air inlet and an exhaust outlet respectively. The end of the air inlet is threadedly connected to a high-pressure gas cylinder, and the end of the exhaust outlet is threadedly connected to a cleaning pipeline.

[0013] As a preferred embodiment of this utility model, the high-pressure gas cylinder contains a cleaning solution, and when the electric valve is opened, the cleaning solution in the high-pressure gas cylinder forms an aerosol that enters the exhalation pipe through the cleaning pipeline for disinfection.

[0014] The embodiments of this utility model have the following advantages:

[0015] This utility model achieves simultaneous monitoring and testing through a dual-pipeline design. The coordinated operation of the carbon dioxide tester, controller, and electric valve enables real-time monitoring of gas concentration and timely triggers comprehensive cleaning of each pipeline. This process cleans up accumulated waste gas while disinfecting the pipelines, simplifying the cleaning process. Combined with a one-way backflow prevention design, it avoids waste gas backflow, eliminates cross-infection, and achieves a faster cleaning rate. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure in the embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure after the pipeline is disassembled in the embodiment of this utility model;

[0020] Figure 3 This is a cross-sectional view of the exhalation pipe in an embodiment of this utility model.

[0021] In the picture:

[0022] 1-Exhalation tubing; 2-Cleaning tubing; 3-High-pressure gas cylinder; 4-Monitoring tubing; 5-Electric valve; 6-Controller; 7-Carbon dioxide tester;

[0023] 101-Silicone hose; 102-One-way air intake valve. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] like Figure 1 and Figure 3 As shown, this utility model provides a gas analyzer exhalation tube with a self-cleaning function, including a cleaning tube 2 connected to the outlet of a high-pressure gas cylinder 3, an exhalation tube 1 inserted into the end of the cleaning tube 2, and a monitoring tube 4 connected to the side curved surface of the exhalation tube 1.

[0026] A carbon dioxide tester 7 for monitoring carbon dioxide concentration is installed on the monitoring pipeline 4, and an electric valve 5 for monitoring the internal air pressure of the cleaning pipeline 2 is installed on the cleaning pipeline 2. A controller 6 is electrically connected between the carbon dioxide tester 7 and the electric valve 5.

[0027] The carbon dioxide tester 7 is equipped with a carbon dioxide sensor. The carbon dioxide sensor collects and monitors the carbon dioxide concentration inside the pipeline 4 in real time, and converts the collected value into an electrical signal and sends it to the controller 6. The controller 6 then controls the opening and closing of the electric valve 5.

[0028] After the electric valve 5 is opened, the air pressure inside the cleaning pipeline 2 gradually increases, forcing the waste gas inside the exhalation pipeline 1 to flow to the outlets at both ends for discharge.

[0029] In this embodiment, the two ends of the exhalation tubing 1 are connected to the air inlets of the tester and the analyzer, respectively. The tester blows in gas through the front sampling port. The gas is divided into two parts. One part enters the analyzer through the outlet of the exhalation tubing 1, and the other part enters the monitoring tubing 4. The gas composition is analyzed in real time by the carbon dioxide tester 7. The gas in the exhalation tubing 1 is detected. The dual-tube design realizes the synchronization of monitoring and testing.

[0030] In this embodiment, the carbon dioxide tester 7 mainly operates based on its internal carbon dioxide sensor. A detection port is provided on the top of the carbon dioxide tester 7, which is connected to the port of the monitoring pipeline 4. After the gas enters the detection port, it enters the carbon dioxide sensor to start analysis. The analyzed value is converted into an electrical signal and transmitted to the controller 6. Its core is to monitor the CO2 concentration in real time through a high-precision sensor and realize the real-time monitoring of gas concentration and exhaust gas replacement by triggering the opening and closing of the electric valve 5.

[0031] Specifically, when the carbon dioxide tester 7 detects that the CO2 concentration in the monitoring pipeline 4 is too high and exceeds the preset threshold, it indicates that there is a lot of residual waste gas inside the exhalation pipeline 1. The carbon dioxide sensor outputs a high-level signal, and the controller 6 receives the signal to open the electric valve 5, injecting new gas into the cleaning pipeline 2. Under the continuous injection of high-pressure gas, the waste gas in the exhalation pipeline 1 is squeezed out and replaced with new gas, thus achieving self-cleaning of the pipeline.

[0032] Similarly, after the self-cleaning process is completed, the built-in sensor of the carbon dioxide tester 7 will automatically perform a secondary concentration detection on the monitoring tube 4. When the detected value drops below the preset threshold, the carbon dioxide sensor outputs a low-level signal, triggering the electric valve 5 to close, thus closing the air inlet of the cleaning tube 2, and the air pressure in the cleaning tube 2 and the exhalation tube 1 gradually returns to the normal state.

[0033] like Figure 1 and Figure 3 As shown, a silicone hose 101 is provided in the exhalation tubing 1 near the cleaning tubing 2, and a one-way inlet valve 102 is installed at the end of the silicone hose 101.

[0034] The silicone hose 101 and the one-way air inlet valve 102 are located inside the cleaning pipeline 2. The air inside the cleaning pipeline 2 flows unidirectionally into the exhalation pipeline 1 through the one-way air inlet valve 102, so that the air in the high-pressure gas cylinder 3 flows into the cleaning pipeline 2 and the exhalation pipeline 1 in sequence through the one-way air inlet valve 102.

[0035] In this embodiment, the one-way air intake valve 102 is a one-way rotating silicone baffle. When the gas flows through the exhalation pipe 1, the silicone baffle hangs down naturally due to gravity in normal conditions, adhering to the opening of the silicone hose 101 to block the airflow.

[0036] It should be noted that the area of ​​the opening of the silicone tubing 101 is smaller than the area of ​​the silicone baffle. When gas enters the exhalation tubing 1, the silicone baffle, under the action of air pressure, only adheres to the silicone tubing 101, preventing the test gas from entering the cleaning tubing 2. When the air pressure in the cleaning tubing 2 increases, the silicone baffle rotates counterclockwise to open, allowing gas to be discharged unidirectionally from the exhalation tubing 1. During cleaning, this prevents the backflow of waste gas in the exhalation tubing 1, resulting in better and more thorough cleaning of the tubing and preventing repeated infections.

[0037] like Figure 1 and Figure 2 As shown, the electric valve 5 is provided with an air inlet and an exhaust outlet. The end of the air inlet is threadedly connected to the high-pressure gas cylinder 3, and the end of the exhaust outlet is threadedly connected to the cleaning pipeline 2.

[0038] The high-pressure gas cylinder 3 contains cleaning fluid. When the electric valve 5 is opened, the cleaning fluid in the high-pressure gas cylinder 3 forms an aerosol that enters the exhalation pipe 1 through the cleaning pipeline 2 for disinfection.

[0039] In this embodiment, the electric valve 5 includes a bistable solenoid valve and a permanent magnet motor. The controller 6 uses an electrical signal output from a relay to switch the forward and reverse rotation of the permanent magnet motor as a control signal to change the rotation direction of the solenoid valve. The controller 6 has two sets of contacts that can switch between two circuits. When the CO2 concentration is detected to be too high, the first contact is closed, and the permanent magnet motor rotates forward under the action of current, driving the solenoid valve to rotate forward and open. Similarly, when the CO2 concentration is detected to be too low, the second contact is closed, and the permanent magnet motor rotates in reverse under the action of current, driving the solenoid valve to rotate in reverse and close, thus realizing automatic detection and real-time control.

[0040] The inlet of the electric valve 5 is threadedly connected to a high-pressure gas cylinder 3, and the outlet is threadedly connected to a cleaning pipeline 2. The high-pressure gas cylinder 3 contains compressed oxygen and cleaning fluid, which is connected to the electric valve 5. When the solenoid valve in the electric valve 5 is opened, the cleaning fluid in the high-pressure gas cylinder 3 is atomized and injected into the cleaning pipeline 2. The cleaning fluid flows to the exhalation pipeline through the cleaning pipeline 2, squeezing the waste gas in the inhalation and exhalation pipelines to the openings at both ends for discharge. At the same time, the atomized cleaning fluid sterilizes and disinfects the exhalation pipeline 1, integrating cleaning and disinfection into one process. This simplifies the cleaning process, improves cleaning efficiency, and achieves efficient self-cleaning of the airway.

[0041] The dual-pipeline design enables simultaneous monitoring and testing. The coordinated operation of the carbon dioxide tester 7, controller 6, and electric valve 5 enables real-time monitoring of gas concentration and timely triggers comprehensive cleaning of each pipeline. This process cleans up accumulated waste gas while disinfecting the pipelines, simplifying the cleaning process. Combined with the unidirectional anti-backflow design, it prevents waste gas backflow, eliminates cross-infection, and achieves a faster cleaning rate.

[0042] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A gas analyzer exhalation tube with self-cleaning function, characterized in that, It includes a cleaning line (2) connected to the outlet of a high-pressure gas cylinder (3), and an exhalation pipe (1) is inserted into the end of the cleaning line (2). A monitoring line (4) is connected to the side curved surface of the exhalation pipe (1). The monitoring pipeline (4) is equipped with a carbon dioxide tester (7) for monitoring carbon dioxide concentration, and the cleaning pipeline (2) is equipped with an electric valve (5) for monitoring the internal air pressure of the cleaning pipeline (2). The carbon dioxide tester (7) and the electric valve (5) are electrically connected to a controller (6). The carbon dioxide tester (7) is equipped with a carbon dioxide sensor inside. The carbon dioxide sensor collects the carbon dioxide concentration inside the monitoring pipeline (4) in real time and converts the collected value into a level signal and sends it to the controller (6). The controller (6) controls the opening and closing of the electric valve (5). The air pressure inside the cleaning pipeline (2) gradually increases after the electric valve (5) is opened, forcing the waste gas inside the exhalation pipeline (1) to flow to the outlets at both ends for discharge.

2. The exhalation tube of a gas analyzer with self-cleaning function according to claim 1, characterized in that, The exhalation tubing (1) is provided with a silicone hose (101) near the cleaning tubing (2), and a one-way air intake valve (102) is installed at the end of the silicone hose (101); The silicone hose (101) and the one-way air inlet valve (102) are located inside the cleaning pipeline (2). The air inside the cleaning pipeline (2) flows unidirectionally into the exhalation pipeline (1) through the one-way air inlet valve (102), so that the air in the high-pressure gas cylinder (3) flows into the cleaning pipeline (2) and the exhalation pipeline (1) in sequence through the one-way air inlet valve (102).

3. The exhalation tube of a gas analyzer with self-cleaning function according to claim 1, characterized in that, The electric valve (5) is provided with an air inlet and an exhaust outlet respectively. The end of the air inlet is threadedly connected to the high-pressure gas cylinder (3), and the end of the exhaust outlet is threadedly connected to the cleaning pipeline (2).

4. The exhalation tube of a gas analyzer with self-cleaning function according to claim 1, characterized in that, The high-pressure gas cylinder (3) contains cleaning fluid. When the electric valve (5) is opened, the cleaning fluid in the high-pressure gas cylinder (3) forms an aerosol and enters the exhalation pipe (1) through the cleaning pipeline (2) for disinfection.

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