Portable quantitative collection device for nasal secretion

Abstract

The utility model belongs to the technical field of medical auxiliary instruments, particularly relates to a portable quantitative collection device for nasal secretions, and aims to solve the problems that an existing device adopts a negative pressure extraction mode, extraction pressure is not easy to control, nasal mucosa can be damaged when nasal secretions are directly sucked, and bleeding can be accompanied, and the portable quantitative collection device for the nasal secretions comprises a centrifugal tube, a built-in tube is arranged in the centrifugal tube; the utility model has the beneficial effects that the filter paper automatically adsorbs nasal secretions to simulate the natural discharge state of the secretions, so that the secretions at different parts in the nasal cavity can be more comprehensively and uniformly collected without generating any additional pressure impact, thereby protecting the integrity of the mucous membrane of the nasal cavity to the greatest extent, reducing the risk of mucous membrane damage and improving the safety of the nasal cavity. Due to the fact that the nasal cavity cannot be strongly stimulated due to adsorption of the filter paper, discomfort feelings such as pain and soreness caused by negative pressure cannot occur to a patient in the collection process, and the whole collection process is more comfortable.

Description

Technical Field

[0001] This utility model relates to a collection device, specifically a convenient quantitative collection device for nasal secretions, belonging to the field of medical auxiliary device technology. Background Technology

[0002] Nasal secretion collection devices are primarily used to collect and analyze secretions produced within the nasal cavity to obtain relevant biological information. This information can be used for various purposes, such as diagnosing respiratory diseases, assessing inflammatory responses, and studying infectious pathogens. By collecting nasal secretions, doctors and researchers can understand the patient's health status and develop corresponding treatment and research plans. Nasal secretion collection is usually achieved by introducing a specific collection device into the nasal cavity to collect samples for subsequent analysis.

[0003] In the prior art, such as the nasal secretion collection device disclosed in announcement number CN220833065U, the end inserted into the nasal cavity of the person being collected can be disassembled, and an instrument suitable for the size of the nasal cavity of the person being collected can be selected for collection; the multiple suction holes can prevent secretion blockage. However, the above-mentioned prior art solutions have the following shortcomings: when extracting nasal secretions, the negative pressure suction method is used to directly aspirate the nasal secretions, which will damage the nasal mucosa. At the same time, if the pressure is not properly controlled during the negative pressure suction process, the excessively strong suction may cause the capillaries under the nasal mucosa to rupture. The nasal mucosa is rich in blood vessels, and once the blood vessels rupture, it will cause bleeding symptoms, which will bring great psychological pressure and fear to the patient. Summary of the Invention

[0004] The purpose of this invention is to provide a convenient quantitative collection device for nasal secretions, which addresses the problems of the above-mentioned devices using negative pressure extraction, where the extraction pressure is difficult to control, and the direct suction of nasal secretions can damage the nasal mucosa and cause bleeding.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a convenient quantitative collection device for nasal secretions, including a centrifuge tube;

[0006] The centrifuge tube contains an internal tube, inside which a filter membrane is installed. Filter paper is placed inside the internal tube and on the surface of the filter membrane. The end of the internal tube extending into the centrifuge tube is arc-shaped, and a flow guide hole is provided at the bottom end of the internal tube.

[0007] As a further improvement of this utility model, the ends of the filter paper are circular.

[0008] As a further improvement of this utility model: one end of the filter paper is connected to a flexible pull rope, and the surface of the filter paper is covered with a protective film.

[0009] As a further embodiment of this utility model: a connecting strip is fixed to the surface of the centrifuge tube, and a sealing plug is installed at one end of the connecting strip. The surface of the sealing plug extends out to an easy-open area, and the sealing plug is simultaneously engaged with the opening at one end of the centrifuge tube and the inner tube.

[0010] As a further embodiment of this utility model: the inner wall of the centrifuge tube is integrally formed with a limiting strip, and the surface of the inner tube has a limiting groove adapted to the limiting strip. The inner tube is movably inserted into the centrifuge tube through the limiting strip and the limiting groove. One end of the inner tube and the starting point of the limiting groove has a rounded arc.

[0011] As a further improvement of this utility model: the interior of the built-in tube has multiple fan-shaped airbags evenly distributed in a ring, and multiple air intake channels are opened in the built-in tube. The multiple air intake channels correspond to and are connected to the multiple fan-shaped airbags one by one, and one end of the air intake channel extends out of the arc-shaped end of the built-in tube.

[0012] The beneficial effects of this utility model are:

[0013] This invention utilizes a combination of components including a centrifuge tube, sealing plug, limiting strip, internal tube, filter membrane, filter paper, pull rope, air inlet channel, and guide hole. The filter paper itself absorbs nasal secretions. Collection is achieved by the filter paper gently contacting the secretions and relying on its own adsorption force. This self-adsorption of nasal secretions simulates the natural discharge of secretions, allowing for more comprehensive and even collection of secretions from different parts of the nasal cavity without generating any additional pressure impact. This maximizes the protection of the integrity of the nasal mucosa and reduces the risk of mucosal damage. Because the filter paper adsorption does not cause strong irritation to the nasal cavity, patients will not experience pain, soreness, or other discomfort caused by negative pressure during the collection process, making the entire collection process more comfortable.

[0014] The rounded end of the filter paper has no sharp edges, allowing it to absorb nasal secretions evenly from all directions when in contact with them. This avoids insufficient or inadequate collection due to uneven local absorption. Furthermore, the rounded end is relatively soft and smooth, providing gentler contact with the nasal mucosa during insertion. Compared to square or angular ends, the rounded end avoids scratching or pricking the mucosa, significantly reducing the risk of damage and alleviating patient discomfort during the collection process, thus improving patient cooperation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the limiting clip, sealing plug, and centrifuge cylinder structure in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the filter membrane, filter paper, and pull rope in this utility model;

[0018] Figure 4 This is a schematic diagram of the internal tube, sealing plug, and limiting groove in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the air intake channel, the fan-shaped airbag, and the filter membrane in this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the guide hole, filter membrane and fan-shaped airbag in this utility model;

[0021] In the diagram: 1. Centrifuge tube; 2. Connecting strip; 3. Sealing plug; 4. Easy-open part; 5. Limiting strip; 6. Internal tube; 7. Limiting groove; 8. Filter membrane; 9. Rounded arc; 10. Filter paper; 11. Pull rope; 12. Air intake channel; 13. Fan-shaped airbag; 14. Guide hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1, as Figures 1 to 6 As shown, a convenient quantitative collection device for nasal secretions includes a centrifuge tube 1;

[0024] A built-in tube 6 is provided inside the centrifuge tube 1. A filter membrane 8 is installed inside the built-in tube 6. Filter paper 10 is provided inside the built-in tube 6 and on the surface of the filter membrane 8. The end of the built-in tube 6 extending into the centrifuge tube 1 is arc-shaped, and a guide hole 14 is provided at the bottom end of the built-in tube 6.

[0025] The filter paper 10 absorbs nasal secretions by gently contacting them and relying on its own adsorption force for collection. This process simulates the natural discharge of secretions, allowing for more comprehensive and even collection of secretions from different parts of the nasal cavity without generating any additional pressure impact. This maximizes the protection of the integrity of the nasal mucosa and reduces the risk of mucosal damage. Since the filter paper 10 does not cause strong irritation to the nasal cavity, patients will not experience pain, soreness, or other discomfort caused by negative pressure during the collection process, making the entire collection process more comfortable.

[0026] The ends of the filter paper 10 are rounded.

[0027] When in use, the rounded end of the filter paper 10 has no sharp edges or corners. When it comes into contact with nasal secretions, it can absorb the secretions evenly from all directions, avoiding insufficient or inadequate collection due to uneven local absorption. At the same time, the rounded end is relatively soft and smooth, making it gentler to contact the nasal mucosa during insertion into the nasal cavity. Compared with square or angular ends, the rounded end will not scratch or puncture the mucosa, greatly reducing the risk of damage to the nasal mucosa, reducing patient discomfort during the collection process, and improving patient cooperation.

[0028] One end of the filter paper 10 is connected to a flexible pull rope 11, and the surface of the filter paper 10 is covered with a protective film.

[0029] The flexible pull cord 11 provides a reliable point of leverage for removing the filter paper 10. After collecting nasal secretions, the filter paper 10 can be smoothly and accurately removed from the nasal cavity by gently pulling the pull cord 11. This design avoids direct contact with the filter paper 10 by hand, reducing the risk of contamination of the sample by bacteria and other contaminants on the hands and ensuring the purity of the sample. Before collection, the protective film can effectively isolate external dust, bacteria, viruses and other contaminants from contaminating the filter paper 10, thereby improving the purity and reliability of the sample.

[0030] Example 2 is an improvement on Example 1: A connecting strip 2 is fixed to the surface of centrifuge tube 1, and a sealing plug 3 is installed at one end of the connecting strip 2. An easy-opening part 4 extends from the surface of the sealing plug 3, and the sealing plug 3 is simultaneously engaged with the opening at one end of centrifuge tube 1 and internal tube 6.

[0031] The sealing plug 3 is simultaneously engaged with the opening at one end of the centrifuge tube 1 and the internal tube 6, forming a double seal, which can effectively prevent leakage of nasal secretion samples during collection, transportation and centrifugation.

[0032] The inner wall of the centrifuge tube 1 is integrally formed with a limiting strip 5, and the surface of the inner tube 6 is opened with a limiting groove 7 that is adapted to the limiting strip 5. The inner tube 6 is movably inserted into the centrifuge tube 1 through the limiting strip 5 and the limiting groove 7. One end of the inner tube 6 and at the beginning of the limiting groove 7 is provided with a rounded part 9.

[0033] One end of the built-in tube 6 is located at the rounded arc 9 at the beginning of the limiting slot 7, which provides good guidance for the insertion of the built-in tube 6. When the built-in tube 6 is inserted into the centrifuge tube 1, the rounded arc 9 can automatically guide the limiting slot 7 to align with the limiting strip 5, avoiding jamming or inability to insert due to improper insertion angle, further simplifying the operation process and improving the convenience of operation. When the centrifuge is running at high speed, the centrifuge tube 1 and the built-in tube 6 need to withstand a large centrifugal force. The connection method of the limiting strip 5 and the limiting slot 7 enhances the structural stability between the built-in tube 6 and the centrifuge tube 1, enabling it to better resist the effect of centrifugal force. This not only helps to ensure the smooth progress of the centrifugation process and avoid damage to the centrifuge caused by the shaking or displacement of the built-in tube 6, but also ensures that the sample is subjected to uniform force during the centrifugation process, improving the sample separation effect.

[0034] The interior of the built-in tube 6 has multiple fan-shaped airbags 13 evenly distributed in a ring. Multiple air intake channels 12 are opened inside the built-in tube 6. The multiple air intake channels 12 correspond to and are connected to the multiple fan-shaped airbags 13. One end of the air intake channel 12 extends out of the arc-shaped end of the built-in tube 6.

[0035] Multiple fan-shaped airbags 13 are evenly distributed in a ring inside the built-in tube 6. When air is inflated into the fan-shaped airbags 13 through the air inlet channel 12, the airbags expand and can exert a certain squeezing effect on the nasal secretion sample in the built-in tube 6. This squeezing can make the sample contact the filter paper 10 and filter membrane 8 more evenly and fully, thereby improving the filtration efficiency.

[0036] Before use, carefully pinch the easy-open part 4 and pull the sealing plug 3 out of the opening of the centrifuge tube 1 and the inner tube 6, taking care to avoid contaminating the inside of the device. Then, holding the centrifuge tube 1, carefully pull out the filter paper 10 from the inner tube 6 along the pull rope 11. Since the surface of the filter paper 10 is covered with a protective film, it can effectively prevent contamination during the extraction process. After removing the protective film from the surface of the filter paper 10, gently insert the filter paper 10 into the nasal cavity to an appropriate depth. The rounded end design of the filter paper 10 can evenly contact and absorb nasal secretions. Its good absorbency can quickly and effectively trap the solid components in the nasal secretions. During the collection process, if you feel that the amount of secretions collected is insufficient, you can gently rotate or finely adjust the position of the filter paper 10 in the nasal cavity so that it can fully contact the secretions from different angles. After collection, hold the pull rope 11 and slowly pull the filter paper 10 out of the nasal cavity. Place the filter paper 10 with the nasal secretion sample into the internal tube 6, ensuring that the filter paper 10 is completely placed inside the internal tube 6. Then, reinsert the internal tube 6 into the centrifuge tube 1. Since the limiting groove 7 on the surface of the internal tube 6 is compatible with the limiting strip 5 on the inner wall of the centrifuge tube 1, the internal tube 6 can be easily inserted into the centrifuge tube 1 through the limiting strip 5 and the limiting groove 7. The rounded end 9 of the internal tube 6 facilitates its accurate insertion into the centrifuge tube 1. The design of the rounded end 9 makes it easier to insert the internal tube 6. Finally, tightly re-lock the sealing plug 3 into the opening of the centrifuge tube 1 and the internal tube 6 to ensure the sealing of the sample and prevent sample leakage or external contamination for subsequent detection and analysis.

[0037] When the built-in tube 6 is inserted, it shapes and compresses the gas inside the centrifuge tube 1, causing the gas to enter the fan-shaped air bladder 13 through the air intake channel 12, and causing the fan-shaped air bladder 13 to expand. This can exert a certain squeezing effect on the nasal secretion sample in the built-in tube 6. This squeezing can make the sample contact the filter paper 10 and filter membrane 8 more evenly and fully, thereby improving the filtration efficiency.

[0038] During sampling and analysis, the centrifuge tube 1 containing nasal secretions is placed smoothly into the appropriate centrifuge rotor hole. After setting the parameters, the centrifuge lid is closed and the centrifuge is started. Under the action of centrifugal force, the liquid components in the nasal secretions pass through the filter paper 10 and further contact the filter membrane 8 inside the built-in tube 6. The fine pore size of the filter membrane 8 can effectively trap smaller impurities and particles, allowing only liquid components that meet specific particle size requirements to pass through. The pure liquid filtered by the filter membrane 8 flows down the inner wall of the built-in tube 6 to the bottom and slowly flows into the bottom space of the centrifuge tube 1 through the guide hole 14 for storage. The retained nasal secretions are used for testing and preservation for later use. The design of the guide hole 14 ensures that the filtered liquid can flow out smoothly on the one hand, and prevents the liquid from splashing or flowing back during the outflow process on the other hand.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A convenient quantitative collection device for nasal secretions, comprising centrifuge tubes (1); characterized in that: The centrifuge tube (1) is provided with an internal tube (6), and a filter membrane (8) is installed inside the internal tube (6). Filter paper (10) is provided inside the internal tube (6) and on the surface of the filter membrane (8). The end of the internal tube (6) extending into the centrifuge tube (1) is arc-shaped, and a guide hole (14) is provided at the bottom end of the internal tube (6).

2. The portable quantitative collection device for nasal secretions according to claim 1, characterized in that: The filter paper (10) has a circular end.

3. The portable quantitative collection device for nasal secretions according to claim 1, characterized in that: One end of the filter paper (10) is connected to a flexible pull rope (11), and the surface of the filter paper (10) is covered with a protective film.

4. The portable quantitative collection device for nasal secretions according to claim 1, characterized in that: A connecting strip (2) is fixed to the surface of the centrifuge tube (1). A sealing plug (3) is installed at one end of the connecting strip (2). An easy-opening part (4) extends from the surface of the sealing plug (3). The sealing plug (3) is simultaneously engaged at one end opening of the centrifuge tube (1) and the internal tube (6).

5. The portable quantitative collection device for nasal secretions according to claim 1, characterized in that: The inner wall of the centrifuge tube (1) is integrally formed with a limiting strip (5), and the surface of the inner tube (6) is opened with a limiting groove (7) that matches the limiting strip (5). The inner tube (6) is movably inserted into the centrifuge tube (1) through the limiting strip (5) and the limiting groove (7). One end of the inner tube (6) and the starting point of the limiting groove (7) is provided with a rounded arc (9).

6. The portable quantitative collection device for nasal secretions according to claim 1, characterized in that: The interior of the built-in tube (6) is evenly distributed with multiple fan-shaped airbags (13) in a ring shape. Multiple air intake channels (12) are opened inside the built-in tube (6). The multiple air intake channels (12) correspond to and are connected to the multiple fan-shaped airbags (13) respectively. One end of the air intake channel (12) extends out of the arc-shaped end of the built-in tube (6).

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