Moisture sampler

Abstract

The utility model discloses a kind of moisture samplers, including a group of cavity bottom shell and upper cover, bottom shell is equipped with first air inlet and second air outlet, upper cover is equipped with first air outlet and second air inlet;Built-in filter unit, one-way air suction passage, communicate first air inlet with first air outlet, and passage;One-way exhalation passage, communicate second air inlet with second air outlet.The utility model removes the impurity of interference measurement in inhaled gas by setting filter material in air suction passage, guarantees the purity of sample collection, guarantees the accuracy of measurement under different environments;Through one-way air suction passage and exhalation passage, ensure that air suction and exhalation process are mutually isolated, effectively avoid the cross mixing of airflow, guarantee that user realizes collection gas by normal periodic breathing;Finally improve the real reflection ability of sample, and reduce cross-contamination and infection risk.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a moisture sampler. Background Technology

[0002] Tidal samplers are essential components of breath analysis instruments, designed for non-invasive collection of human respiratory gases. Their primary purpose is to obtain accurate and reliable breath samples for physiological, pathological, or metabolic testing. These tests are crucial for assessing an individual's health status, monitoring disease progression, and evaluating treatment effectiveness.

[0003] However, existing tidal samplers have revealed several shortcomings in practical applications. First, samples are easily contaminated by impurities or gases in the environment during collection. For example, dust, pollutants, and chemical components present in the outside air may mix into the sample during sampling, leading to inaccurate analytical results. This problem is particularly pronounced in complex environments such as hospitals and laboratories, where environmental factors directly affect sample purity, thus interfering with the accurate analysis of respiratory gas components.

[0004] Furthermore, tidal samplers often suffer from the problem of cross-mixing of inspiratory and expiratory airflows in their functional design. During breathing, the inspiratory and expiratory airflows may interact within the device, leading to a mixture of inspiratory and expiratory components in the sample. This mixing phenomenon increases the uncertainty of the analytical results, especially when performing real-time monitoring.

[0005] Existing breath samplers pose a potential risk of cross-infection during the sampling process. In medical and public health settings, infectious pathogens may be transmitted through breath samples, thus jeopardizing the safety of testing reagents. This not only affects the safe use of the equipment but also poses a potential threat to individual health.

[0006] In summary, the limitations of existing moisture samplers in terms of reliability, accuracy, and safety urgently need to be addressed through technological innovation. Utility Model Content

[0007] To improve the accuracy of sample reflection and reduce the risk of cross-contamination and infection, this invention provides a moisture sampler.

[0008] The technical solution adopted by this utility model is as follows: A moisture sampler includes: a bottom shell and a top cover, which together form a cavity; the lower end of the bottom shell is provided with a first air inlet and a second air outlet; the top cover is provided with a first air outlet and a second air inlet; an inhalation channel, a one-way channel connecting the first air inlet and the first air outlet, and having a built-in filter unit; an exhalation channel, a one-way channel connecting the second air inlet and the second air outlet; an adapter, detachably connected to the top cover, and provided with a nozzle that connects to both the first air outlet and the second air inlet; and a connector, installed at the lower end of the bottom shell and connected to the second air outlet.

[0009] Preferably, it further includes a hopper disposed within the bottom shell, the hopper having a central tube and an outer wall, a section of the central tube forming the exhalation channel, and the space between the central tube and the outer wall being used to fill filter material.

[0010] Preferably, the filter media is made of alumina spheres covered with potassium permanganate.

[0011] Preferably, a filter cotton support is provided above the filter material, and filter cotton is placed on the filter cotton support.

[0012] Preferably, an annular valve bracket is provided between the hopper and the upper cover, and a one-way valve is installed on the valve bracket within the air intake channel.

[0013] Preferably, a check valve assembly is provided between the central hole of the valve bracket and the central tube, together forming the exhalation channel.

[0014] Preferably, the check valve assembly includes: an inlet housing with a connecting pipe at the upper end and an upper valve body at the lower end; an outlet housing with a connecting pipe at the lower end and a lower valve body at the upper end; a plurality of arched support plates arranged radially in the lower valve body; and a flexible valve plate placed on the support plates.

[0015] Preferably, the air inlet housing and the air outlet housing are welded together as one unit, and the pipes at the upper and lower ends are respectively inserted and tightly fitted into the center hole of the valve bracket and the center pipe.

[0016] Preferably, the adapter and the top cover are connected by a snap fastener.

[0017] Preferably, the outer peripheral wall of the top cover is provided with a sealing element.

[0018] This utility model has the following beneficial effects:

[0019] 1. Reduce contamination risk: Through the sealed design of the bottom shell and top cover and the filter material in the air intake channel, impurities that interfere with the measurement in the intake gas are removed, thereby ensuring the purity of the collected samples and the accuracy of the measurement under different environments;

[0020] 2. Optimized airflow channels: By setting up inhalation and exhalation channels and incorporating a one-way channel, the inhalation and exhalation processes are isolated from each other, effectively avoiding cross-mixing of airflows and ensuring that users can collect gas through normal periodic breathing;

[0021] 3. Prevent infection: By setting up filter cotton, potential infectious pathogens are effectively isolated during sample collection, avoiding cross-infection caused by sampling at the source, thus ensuring the safety of users and examinees and meeting the strict requirements of medical and public health.

[0022] 4. Convenient operation: The snap-on connection between the adapter and the top cover makes it easy to replace the disposable adapter. Attached Figure Description

[0023] Figure 1 This is an installation diagram of an embodiment of the present utility model.

[0024] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0025] Figure 3 This is a cross-sectional schematic diagram (open) of the check valve assembly in an embodiment of this utility model.

[0026] Figure 4 This is a cross-sectional schematic diagram (closed) of the check valve assembly in an embodiment of this utility model.

[0027] Figure 5 This is a schematic diagram of the air intake state in an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the exhalation state according to an embodiment of the present invention.

[0029] Bottom shell 1, first air inlet 101, second air outlet 102;

[0030] Top cover 2, first air outlet 201, second air inlet 202;

[0031] Inhalation channel 3;

[0032] Exhalation channel 4;

[0033] Adapter 5, air nozzle 501;

[0034] Connector 6;

[0035] 7.00 hopper, 701.00 hopper wall, 702.

[0036] Filter media 8;

[0037] Filter cotton support 9;

[0038] 10g of filter cotton;

[0039] Valve support 11;

[0040] One-way valve 12;

[0041] Check valve assembly 13, inlet housing 1301, outlet housing 1302, support plate 1303, flexible valve plate 1304;

[0042] Seal 14. Detailed Implementation

[0043] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0044] In the embodiments, such as Figures 1-2 The described device is a hygroscopic sampler, comprising: a bottom shell 1 and a top cover 2, forming a cavity; a first air inlet 101 and a second air outlet 102 at the lower end of the bottom shell 1; and a first air outlet 201 and a second air inlet 202 on the top cover 2; an inhalation channel 3, a one-way channel connecting the first air inlet 101 and the first air outlet 201, and containing a built-in filter unit; an exhalation channel 4, a one-way channel connecting the second air inlet 202 and the second air outlet 102; an adapter 5, detachably connected to the top cover 2, and equipped with a nozzle 501 connecting both the first air outlet 201 and the second air inlet 202; and a connector 6, installed at the lower end of the bottom shell 1 and connected to the second air outlet 102. This embodiment, through the sealing design of the bottom shell 1 and the top cover 2 and the filter material 8 in the inhalation channel 3, removes impurities from the inhaled gas that interfere with measurement, thereby ensuring the purity of the collected sample and the accuracy of measurements under different environments. Therefore, this embodiment improves the true reflectivity of the sample and reduces the risk of cross-contamination and infection.

[0045] In the embodiments, such as Figures 1-2 The system also includes a hopper 7 disposed within the bottom shell 1. The hopper 7 has a central tube 701 and an outer wall 702. A section of the central tube 701 forms an exhalation channel 4, and the space between the central tube 701 and the outer wall 702 is used to fill filter media 8. In this embodiment, the hopper 7 actually adopts a two-section assembly structure, which facilitates filling the filter media 8 and also facilitates the replacement of the filter media 8 later. The filter media 8 in this embodiment uses alumina spheres covered with potassium permanganate, which comprehensively uses oxidation, physical adsorption, and electrostatic adsorption to remove impurities in the inhaled gas that interfere with the measurement, ensuring the accuracy of the measurement under different environments.

[0046] In the embodiments, such as Figures 1-2The filter media 8 is provided with a filter cotton support 9 above it, and a filter cotton 10 is placed on the filter cotton support 9. By setting up the filter cotton 10, potential infectious pathogens are effectively isolated during the sample collection process, avoiding cross-infection caused by sampling at the source, thereby ensuring the safety of users and examinees and meeting the strict requirements of medical and public health.

[0047] In the embodiments, such as Figure 1 , Figure 2 As shown, an annular valve bracket 11 is provided between the hopper 7 and the upper cover 2, and a one-way valve 12 is installed on the valve bracket 11 within the air intake channel 3. Figures 1-4 As shown, a check valve assembly 13 is disposed between the central hole of the valve bracket 11 and the central tube 701, together forming the exhalation channel 4. Specifically, the check valve assembly 13 includes: an inlet housing 1301, with a connecting pipe at the upper end and an upper valve body at the lower end; an outlet housing 1302, with a connecting pipe at the lower end and a lower valve body at the upper end; several arched support plates 1303, arranged radially in the lower valve body; and a flexible valve plate 1304, placed on the support plates 1303. Figure 5 , Figure 6 The diagram shows the airflow path in this embodiment under both inhalation and exhalation states. In inhalation, exhalation channel 4 is closed, and in exhalation, inhalation channel 3 is closed. This embodiment establishes one-way valves 12 and check valve assemblies 13 in inhalation channel 3 and exhalation channel 4, respectively, to ensure that the inhalation and exhalation processes are isolated from each other, effectively preventing cross-mixing of airflows and ensuring that the user can collect gas through normal periodic breathing.

[0048] In the embodiments, such as Figure 3 , Figure 4 As shown, the intake housing 1301 and the outlet housing 1302 are welded together, and the connecting pipes at the upper and lower ends are respectively inserted and tightly fitted into the center hole and center tube 701 of the valve bracket 11. The two connecting pipes of the check valve assembly 13 achieve sealing through interference fit; the intake housing 1301 and the outlet housing 1302 are ultrasonically welded to ensure reliable airtightness.

[0049] In the embodiments, such as Figure 1 , Figure 2 As shown, the adapter 5 and the upper cover 2 are connected by a snap fastener. The snap fastener connection makes it easy to replace the disposable adapter 5, bringing convenience to the operation.

[0050] In the embodiments, such as Figure 1 , Figure 2 As shown, the outer peripheral wall of the upper cover 2 is provided with a sealing element 14. The sealing element 14 has a sealing lip structure, which can ensure the reliability of the seal and also ensure that the adapter 5 can be smoothly installed and removed.

[0051] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A moisture sampler, characterized in that, include: The bottom shell (1) and the top cover (2) together form a cavity. The bottom shell (1) is provided with a first air inlet (101) and a second air outlet (102) at its lower end. The top cover (2) is provided with a first air outlet (201) and a second air inlet (202). The intake channel (3) connects the first air inlet (101) and the first air outlet (201) and is a one-way channel with a built-in filter unit; The exhalation channel (4) is a one-way channel connecting the second air inlet (202) and the second air outlet (102); The adapter (5) is detachably connected to the upper cover (2) and is provided with a nozzle (501) that is connected to both the first air outlet (201) and the second air inlet (202). The connector (6) is installed at the lower end of the bottom shell (1) and is connected to the second air outlet (102).

2. The moisture sampler according to claim 1, characterized in that, It also includes a hopper (7) disposed in the bottom shell (1), the hopper (7) having a central tube (701) and an outer wall (702), a section of the exhalation channel (4) is formed in the central tube (701), and the space between the central tube (701) and the outer wall (702) is used to fill filter material (8).

3. The moisture sampler according to claim 2, characterized in that, The filter media (8) consists of alumina spheres covered with potassium permanganate.

4. The moisture sampler according to claim 2, characterized in that, A filter cotton support (9) is provided above the filter material (8), and a filter cotton (10) is placed above the filter cotton support (9).

5. The moisture sampler according to claim 2, characterized in that, An annular valve bracket (11) is provided between the hopper (7) and the upper cover (2), and a one-way valve (12) is installed in the air intake channel (3) within the valve bracket (11).

6. The moisture sampler according to claim 5, characterized in that, A check valve assembly (13) is provided between the central hole of the valve support (11) and the central tube (701), together forming the exhalation channel (4).

7. The moisture sampler according to claim 6, characterized in that, The check valve assembly (13) includes: The intake housing (1301) has a connecting pipe at the upper end and an upper valve body at the lower end; The exhaust housing (1302) has a connecting pipe at the lower end and a lower valve body at the upper end; Several arched support plates (1303) are arranged radially in the lower valve body; The flexible valve plate (1304) is placed on the support plate (1303).

8. The moisture sampler according to claim 7, characterized in that, The air intake housing (1301) and the air outlet housing (1302) are welded together as one unit, and the pipes at the upper and lower ends are respectively inserted and tightly fitted into the center hole of the valve bracket (11) and the center tube (701).

9. The moisture sampler according to claim 1, characterized in that, The adapter (5) and the top cover (2) are connected by a snap fastener.

10. The moisture sampler according to claim 1 or 9, characterized in that, The outer peripheral wall of the upper cover (2) is provided with a sealing element (14).

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