Backflow-proof C-13 expiration detection sampling device

Abstract

The utility model relates to the technical field of medical detection, in particular to an anti-backflow type C-13 expiration detection sampling device which comprises a sampling bag, a sampling pipe and an anti-backflow device, an air inlet pipe is installed at the top end of the sampling bag, an air outlet pipe is installed on the bottom wall of the sampling bag, the sampling pipe is installed at the top end of the air inlet pipe, and the anti-backflow device is installed on the bottom wall of the sampling bag. The sampling tube is communicated with the sampling bag, a sampling head is arranged at one end, far away from the sampling bag, of the sampling tube, a patient blows in gas through the sampling tube, the gas enters the sampling bag through the one-way valve, and due to the action of the one-way valve, the gas cannot flow back into the sampling tube, so that the purity and the accuracy of the gas in the sampling bag can be kept; the gas sampling device is simple in structure, avoids interference of outside air or other pollutants, can ensure that gas can smoothly flow into the sampling bag in the sampling process, and reduces airflow resistance, so that the sampling efficiency is improved, the sampling process is simplified, the operation error of operators is reduced, and the sampling accuracy and reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection, in particular to a backflow-proof C-13 breath detection sampling device. Background Art

[0002] As we all know, the C-13 breath test is a commonly used medical test method, mainly used to detect Helicobacter pylori infection in patients. During the test, the patient blows a certain amount of gas into a sampling device, and the detection device then analyzes the C-13-labeled carbon dioxide in the gas to determine whether the patient is infected with Helicobacter pylori.

[0003] There are some problems with the existing C-13 breath detection sampling device. For example, the gas in the sampling device is easy to flow back, resulting in inaccurate test results and reducing the accuracy and reliability of sampling. At the same time, the design of the sampling device is not user-friendly and not convenient to use, which brings inconvenience to patients. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a backflow-proof C-13 breath detection sampling device.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a backflow-proof C-breath detection sampling device, comprising a sampling bag, a sampling tube and a backflow-proof device, wherein an air inlet pipe is installed at the top of the sampling bag, an air outlet pipe is installed at the bottom wall of the sampling bag, the sampling tube is installed at the top of the air inlet pipe, the sampling tube is connected to the sampling bag, a sampling head is provided at one end of the sampling tube away from the sampling bag, the backflow-proof device comprises a one-way valve and an anti-backflow device, the one-way valve is installed at the connection between the air inlet pipe and the sampling tube, and the anti-backflow device is installed inside the air inlet pipe.

[0008] In order to prevent the patient from changing his exhalation force, the present invention is improved in that the anti-backflow device includes a first baffle and a second baffle, and the first baffle and the second baffle are sequentially arranged on the side wall of the air inlet pipe from top to bottom.

[0009] In order to prevent gas backflow, the present invention is improved in that the first baffle and the second baffle are designed to be staggered and tilted in opposite directions to each other.

[0010] In order to facilitate the control of the exhaled flow rate and flow rate, the present invention is improved in that a flow meter is provided on the sampling tube.

[0011] In order to make the sampling bag have a certain elasticity, the utility model is improved in that the sampling bag is made of soft material.

[0012] In order to seal the air outlet pipe and prevent gas leakage, the utility model is improved in that the end of the air outlet pipe is threadedly connected with a sealing cover.

[0013] In order to prevent the sealing cover from being lost after being disassembled, the present invention has an improvement in that a connecting rod is provided on the side wall of the air outlet pipe, and one end of the connecting rod away from the air outlet pipe is fixedly connected to the top wall of the sealing cover, and the connecting rod is made of soft plastic.

[0014] In order to improve the comfort of the sampling head entrance, the present invention has an improvement in that the sampling head is designed with rounded corners.

[0015] (3) Beneficial effects

[0016] Compared with the existing technology, the present invention provides a backflow-proof C-13 breath detection sampling device with the following beneficial effects:

[0017] The anti-backflow C-13 breath detection sampling device has an anti-backflow device. The patient blows gas into the sampling tube, and the gas enters the sampling bag through the one-way valve. Due to the action of the one-way valve, the gas will not flow back into the sampling tube, which helps to maintain the purity and accuracy of the gas in the sampling bag, avoid interference from external air or other pollutants, and ensure that the gas can flow smoothly into the sampling bag during the sampling process, reducing airflow resistance, thereby improving sampling efficiency, simplifying the sampling process, reducing operator operating errors, and improving sampling accuracy and reliability.

[0018] This anti-backflow C-13 breath detection sampling device has an anti-backflow device. The gas passes through the side wall of the first baffle and enters the sampling bag along the second baffle. This double blocking and direction change design makes the gas face greater resistance and obstacles when backflowing, thereby effectively preventing gas backflow. Even when the patient finishes exhalation or changes the exhalation strength, it can further prevent gas backflow.

[0019] This anti-backflow C-13 breath detection sampling device has a flow meter and a sampling head with rounded corners. The flow meter can accurately measure the exhaled flow rate and flow, thereby ensuring the accuracy and reliability of sampling. The rounded corner design makes the edge of the sampling head smooth, reducing irritation and pressure on the patient's mouth or nasal cavity, reducing discomfort, and making the patient feel more comfortable during exhalation. The rounded corner design also helps to smooth the airflow and reduce the formation of turbulence and eddies, which helps to ensure that the exhaled sample can smoothly enter the sampling bag and reduce airflow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first angle;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second angle;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from a third angle;

[0023] Figure 4 This is a schematic diagram of the half-cut three-dimensional structure of the air intake pipe of the present invention.

[0024] In the figure: 1. Sampling bag; 2. Sampling tube; 3. Air inlet pipe; 4. Air outlet pipe; 5. Sampling head; 6. One-way valve; 7. First baffle; 8. Second baffle; 9. Flow meter; 10. Sealing cover; 11. Connecting rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4 , a backflow-proof C-breath detection sampling device, comprising a sampling bag 1, a sampling tube 2 and an anti-backflow device, the top of the sampling bag 1 is installed with an air inlet pipe 3, the bottom wall of the sampling bag 1 is installed with an air outlet pipe 4, the top of the air inlet pipe 3 is installed with the sampling tube 2, the sampling tube 2 is connected to the sampling bag 1, and the end of the sampling tube 2 away from the sampling bag 1 is provided with a sampling head 5, the anti-backflow device comprises a one-way valve 6 and an anti-backflow device, the one-way valve 6 is installed at the connection between the air inlet pipe 3 and the sampling tube 2, and the anti-backflow device is installed inside the air inlet pipe 3. In this embodiment, the sampling tube 2 is used to guide the patient to drive the sampling head 5 inlet, and then Instruct the patient to exhale, and the patient blows gas into the sampling tube 2. The gas passes through the one-way valve 6 and enters the sampling bag 1. Due to the action of the one-way valve 6, the gas will not flow back into the sampling tube 2, which helps to maintain the purity and accuracy of the gas in the sampling bag 1 and avoid interference from external air or other pollutants. It can also ensure that the gas can flow smoothly into the sampling bag 1 during the sampling process, reduce airflow resistance, thereby improving sampling efficiency, simplifying the sampling process, reducing operator operating errors, and improving sampling accuracy and reliability. The gas then passes through the anti-backflow device and finally enters the sampling bag 1. When the sampling is completed, the gas can be guided out of the sampling bag 1 through the outlet pipe 4 for subsequent detection and analysis.

[0027] During actual use, in order to further prevent the patient from changing his exhalation force, in this embodiment, the anti-backflow device includes a first baffle 7 and a second baffle 8. The first baffle 7 and the second baffle 8 are sequentially arranged on the side wall of the air inlet pipe 3 from top to bottom. The first baffle 7 and the second baffle 8 can block the gas.

[0028] During actual use, in order to further prevent gas backflow, in this embodiment, the first baffle 7 and the second baffle 8 are designed to be staggered and tilted in opposite directions. When the gas flows in the air inlet pipe 3, it will first encounter the first baffle 7. Since the first baffle 7 is tilted, the gas is forced to change the flow direction, generating a certain vortex or rotation effect, which not only increases the flow resistance of the gas, but also forms a certain low-pressure area behind the first baffle 7. Then, the gas continues to flow to the second baffle 8. Since the second baffle 8 is also tilted, the gas is forced to change the flow direction again, further increasing the flow resistance and vortex effect. This double blocking and direction change design makes the gas face greater resistance and obstacles when it flows back, thereby effectively preventing gas backflow. In addition, the two sets of baffles with an inclined and staggered design can also increase the friction and collision between the gas and the pipe wall, further consume the energy of the gas, and make it more difficult to generate backflow. This improves the anti-backflow ability of the air inlet pipe 3. Even when the patient finishes exhaling or changes the exhalation strength, it can further prevent gas backflow, and cooperate with the one-way valve 6 to double block the gas.

[0029] In actual use, in order to further facilitate the control of the exhaled flow rate and flow rate, in this embodiment, a flow meter 9 is provided on the sampling tube 2, and the flow meter 9 can accurately measure the exhaled flow rate and flow rate, thereby ensuring the accuracy and reliability of the sampling.

[0030] During actual use, the sampling bag 1 is further made to have a certain elasticity. In this embodiment, the sampling bag 1 is made of soft material. The sampling bag 1 made of soft material has good compliance and can expand with the patient's exhalation, ensuring that the exhaled breath sample can flow smoothly into the bag. This compliance reduces the resistance when the patient exhales and improves the comfort of sampling. Soft materials usually also have good sealing properties, which can effectively reduce the risk of air leakage during the sampling process and ensure the integrity and accuracy of the exhaled breath sample.

[0031] During actual use, the air outlet pipe 4 is further sealed to prevent gas leakage. In this embodiment, the end of the air outlet pipe 4 is threadedly connected with a sealing cover 10 to facilitate sealing the air outlet pipe 4 and prevent gas leakage during the sampling process.

[0032] During actual use, in order to further prevent the sealing cover 10 from being lost after being disassembled, in this embodiment, a connecting rod 11 is provided on the side wall of the air outlet pipe 4, and the end of the connecting rod 11 away from the air outlet pipe 4 is fixedly connected to the top wall of the sealing cover 10, and the connecting rod 11 is made of soft plastic. When the gas in the sampling bag 1 is detected after the sealing cover 10 is removed, the sealing cover 10 is installed on the connecting rod 11, which can prevent the sealing cover 10 from falling and being lost. The connecting rod 11 is made of soft plastic, so that the connecting rod 11 has a certain elasticity, which facilitates the sealing cover 10 to leave and contact the air outlet pipe 4. After the detection, the air outlet pipe 4 can be sealed again through the sealing cover 10, which is convenient for the later processing of the sampling bag 1.

[0033] During actual use, the comfort of the entrance of the sampling head 5 is further improved. In this embodiment, the sampling head 5 has a rounded corner design. The rounded corner design makes the edge of the sampling head 5 smooth, reducing the irritation and pressure on the patient's oral or nasal cavity. This design is more ergonomic, making the patient feel more comfortable during exhalation and reducing discomfort. Since the sharp edges are reduced, the possibility of accidental breakage is reduced, so that the sampling head 5 can better maintain its integrity and function during long-term use. The rounded corner design also helps to smooth the airflow and reduce the formation of turbulence and eddies, which helps to ensure that the exhaled sample can smoothly enter the sampling device, reduce airflow resistance, and thus improve the accuracy and efficiency of sampling.

[0034] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A backflow-proof C-13 breath detection sampling device, comprising a sampling bag (1), a sampling tube (2) and a backflow-proof device, characterized in that: An air inlet pipe (3) is installed at the top of the sampling bag (1), an air outlet pipe (4) is installed at the bottom wall of the sampling bag (1), the sampling pipe (2) is installed at the top of the air inlet pipe (3), the sampling pipe (2) is connected to the sampling bag (1), and a sampling head (5) is provided at one end of the sampling pipe (2) away from the sampling bag (1). The anti-backflow device includes a one-way valve (6) and an anti-backflow device, the one-way valve (6) is installed at the connection between the air inlet pipe (3) and the sampling pipe (2), and the anti-backflow device is installed inside the air inlet pipe (3).

2. The anti-backflow C-13 breath detection sampling device according to claim 1, characterized in that: The backflow prevention device comprises a first baffle (7) and a second baffle (8), and the first baffle (7) and the second baffle (8) are sequentially arranged on the side wall of the air intake pipe (3) from top to bottom.

3. The anti-backflow C-13 breath detection sampling device according to claim 2, characterized in that: The first baffle (7) and the second baffle (8) are designed to be staggered and tilted in opposite directions.

4. The anti-backflow C-13 breath detection sampling device according to claim 3, characterized in that: The sampling tube (2) is provided with a flow meter (9).

5. The anti-backflow C-13 breath detection sampling device according to claim 4, characterized in that: The sampling bag (1) is made of soft material.

6. The anti-backflow C-13 breath detection sampling device according to claim 5, characterized in that: The end of the air outlet pipe (4) is threadedly connected with a sealing cover (10).

7. The anti-backflow C-13 breath detection sampling device according to claim 6, characterized in that: A connecting rod (11) is provided on the side wall of the air outlet pipe (4), and one end of the connecting rod (11) away from the air outlet pipe (4) is fixedly connected to the top wall of the sealing cover (10), and the connecting rod (11) is made of soft plastic.

8. The anti-backflow C-13 breath detection sampling device according to claim 7, characterized in that: The sampling head (5) is designed with rounded corners.

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