Filter tip connected with multi-model lung function instrument

Abstract

The utility model discloses a filter tip connected with a multi-model lung function instrument, relates to the technical field of medical instruments, and solves the problems that the detection efficiency is reduced and the detection work is influenced as the filter tips are difficult to distinguish in size in the prior art. Comprising a mouthpiece, a filter membrane and a connector, the end of the mouthpiece is connected with the connector, a fixing groove is formed between the mouthpiece and the connector, and the filter membrane is fixedly connected into the fixing groove; the filtering membrane comprises a primary filtering layer, a middle filtering layer and a high filtering layer which are arranged in sequence; the end part, far away from the connector, of the mouthpiece is elliptical; a connecting port is formed in the end, away from the mouthpiece, of the connector, the inner side wall, close to the connecting port, of the connector is of a step-shaped structure, and the step-shaped structure comprises a plurality of connecting sections with different diameters. The filter tip has the beneficial effects that the filter tip can adapt to size differences of interfaces of different types of lung function instruments, and the universality of the filter tip is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a filter tip for connecting multiple models of pulmonary function instruments. Background Technology

[0002] Currently, pulmonary function testing equipment is used to examine a patient's lungs. It can accurately measure many lung function indicators, such as vital capacity and peak expiratory flow rate, providing doctors with a basis for judging the patient's lung health status.

[0003] In actual use, to ensure the hygiene of the test, a pulmonary function instrument usually needs to be used with a disposable filter. The patient's exhaled air enters the pulmonary function instrument through the filter for analysis. The filter can effectively block impurities such as saliva droplets, bacteria, and viruses, preventing them from contaminating the delicate sensing components inside the instrument and extending the instrument's service life.

[0004] When using a pulmonary function analyzer, the filter tip needs to be inserted into the connection point on the handle. The filter tip must conform to the size of the connection point. Currently, pulmonary function analyzers are manufactured by different companies, and there is a lack of unified standards and specifications in the product manufacturing process. As a result, too many types of filter tips are required, making it difficult for medical staff to distinguish between them during testing. This reduces the efficiency of the testing work and may also lead to mismatch due to negligence, resulting in inaccurate test data and affecting the testing work.

[0005] Therefore, this utility model proposes a filter tip for connecting multiple models of pulmonary function instruments to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a filter tip for connecting multiple models of pulmonary function instruments, in order to solve the problem that the size of the filter tip is not easy to distinguish and use in the prior art, which reduces the detection efficiency and affects the detection work.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A filter tip for connecting multiple models of pulmonary function instruments includes a mouthpiece, a filter membrane, and a connector. The mouthpiece is connected to the connector at its end, and a fixing groove is provided between the mouthpiece and the connector. The filter membrane is fixedly connected in the fixing groove. The filter membrane includes a primary filter layer, a secondary filter layer, and a high filter layer arranged sequentially. The end of the mouthpiece away from the connector is elliptical. The end of the connector away from the mouthpiece has a connection interface, and the inner sidewall of the connector near the connection interface has a stepped structure, which includes multiple connecting segments of different diameters.

[0009] By adopting the above technical solution, it is possible to adapt to the size differences of interfaces of different models of pulmonary function instruments, thereby improving the versatility of the filter tip.

[0010] Furthermore, the outer wall surface of the bite is provided with an anti-slip texture.

[0011] By adopting the above technical solution, the friction between the mouthpiece and the lips is increased.

[0012] Furthermore, the primary filter layer is made of non-woven fabric; the secondary filter layer is made of meltblown fabric; and the high-filtration layer is made of polypropylene.

[0013] By adopting the above technical solutions, the impact of impurities on the accuracy of lung function test results can be reduced, making the test data more reliable and avoiding cross-infection of viruses caused by multiple people using the lung function instrument.

[0014] Furthermore, a sealing structure is provided between the bite and the connector, the sealing structure being a first annular rubber sealing ring.

[0015] By adopting the above technical solution, the airtightness between the bite and the connector can be ensured, preventing gas leakage.

[0016] Furthermore, the inner wall of the connector is uniformly connected with multiple anti-slip strips, which are arranged longitudinally corresponding to the stepped structure.

[0017] By adopting the above technical solution, the friction between the connector and the pulmonary function instrument interface can be increased, making the connection more stable.

[0018] Furthermore, a second annular rubber sealing ring is fixedly connected to the end of the connector away from the bite, and a third annular rubber sealing ring is provided at each of the connector sections corresponding to the connecting segments.

[0019] By adopting the above technical solution, the sealing of the connection is further enhanced, preventing gas leakage from the connection during the testing process, thereby ensuring the accuracy and reliability of the lung function test data.

[0020] Furthermore, the transition portions of the plurality of connecting segments are set to rounded corners.

[0021] By adopting the above technical solution, the rounded corners can play a guiding role, making the connector smoother when connecting to the pulmonary function instrument and avoiding connection difficulties.

[0022] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The stepped structure on the inner wall of the connector and the multiple connecting sections of different diameters of this utility model can adapt to the size differences of interfaces of different models of pulmonary function instruments, improve the versatility of the filter, reduce the selection time of medical staff, and improve the efficiency of the testing work. Attached Figure Description

[0024] Figure 1 This is a vertical schematic diagram of the present invention. Figure 1 ;

[0025] Figure 2 This is a vertical schematic diagram of the present invention. Figure 2 ;

[0026] Figure 3 This is the front view of the present invention;

[0027] Figure 4 This is the right view of the present invention;

[0028] Figure 5 for Figure 4 A schematic diagram of the AA cross-section;

[0029] In the diagram: 1. Bit; 2. Anti-slip texture; 3. Filter membrane; 11. Pre-filter layer; 12. Intermediate filter layer; 13. High filter layer; 4. Connector; 5. Connection interface; 7. Connection section; 8. Rounded corner; 9. Fixing groove; 14. First annular rubber sealing ring; 15. Anti-slip strip; 16. Second annular rubber sealing ring; 17. Third annular rubber sealing ring. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0031] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] A filter tip for connecting multiple models of pulmonary function instruments includes a mouthpiece 1, a filter membrane 3, and a connector 4. The mouthpiece 1 is connected to the connector 4 at its end, and a sealing structure, namely a first annular rubber sealing ring 14, is provided between the mouthpiece 1 and the connector 4. This ensures the airtightness of the connection and prevents gas leakage. A fixing groove 9 is provided between the mouthpiece 1 and the connector 4, and the filter membrane 3 is fixedly connected in the fixing groove 9. A connection interface 5 is provided at the end of the connector 4 away from the mouthpiece 1. The inner sidewall of the connector 4 near the connection interface 5 has a stepped structure, which includes multiple connecting segments 7 of different diameters. The transition parts of the multiple connecting segments 7 are rounded 8. Multiple anti-slip strips 15 are evenly connected to the inner sidewall of the connector 4, and the anti-slip strips 15 are arranged longitudinally corresponding to the stepped structure. A second annular rubber sealing ring 16 is fixedly connected to the end of the connector 4 away from the mouthpiece 1, and a third annular rubber sealing ring 17 is provided at each connecting segment 7 of the connector 4. The filter tip is then connected to the pulmonary function instrument. The stepped structure on the inner wall of the connector 4 and the multiple connecting sections 7 of different diameters can adapt to the size differences of the interfaces of different models of pulmonary function instruments. During the connection process, the anti-slip strip 15 on the inner wall of the connector 4 increases the friction between the connector and the interface of the pulmonary function instrument, making the connection more stable. The second annular rubber sealing ring 16 at the end of the connector 4 and the third annular rubber sealing ring 17 at the connecting section 7 further enhance the sealing of the connection, preventing gas from leaking from the connection point during the test, thereby ensuring the accuracy and reliability of the pulmonary function test data.

[0033] The end of the mouthpiece 1 furthest from the connector 4 is elliptical; the outer surface of the mouthpiece 1 is provided with anti-slip texture 2. When using this filter, the user can firmly bite the mouthpiece 1 by placing their lips on the elliptical mouthpiece 1 with anti-slip texture 2.

[0034] The filter membrane 3 comprises a pre-filter layer 11, a middle filter layer 12, and a high-filtration layer 13 arranged sequentially. The pre-filter layer 11 is made of non-woven fabric; the middle filter layer 12 is made of meltblown fabric; and the high-filtration layer 13 is made of polypropylene. When the user exhales, the air enters through the mouthpiece 1 and first passes through the pre-filter layer 11, where the non-woven fabric initially blocks larger particles. The air then passes through the middle filter layer 12, where the meltblown fabric, with its fine fiber structure, further filters out even smaller particles and bacteria. Finally, the air passes through the high-filtration layer 13, where the treated polypropylene material electrostatically adsorbs residual small particles, ensuring the purity of the air entering the pulmonary function analyzer. This reduces the impact of impurities on the accuracy of pulmonary function test results, making the test data more reliable and preventing cross-infection of viruses caused by multiple users of the pulmonary function analyzer.

[0035] The working process of this utility model is as follows:

[0036] First, connect the filter to the pulmonary function analyzer. The stepped structure on the inner wall of the connector 4 and the multiple connecting segments 7 of different diameters can accommodate the size differences of the interfaces of different models of pulmonary function analyzers. During the connection process, the anti-slip strip 15 on the inner wall of the connector 4 increases the friction between the connector and the interface of the pulmonary function analyzer, making the connection more stable. The second annular rubber sealing ring 16 at the end of the connector 4 and the third annular rubber sealing ring 17 at the connecting segment 7 further enhance the sealing of the connection, preventing gas from leaking from the connection point during the test, thereby ensuring the accuracy and reliability of the pulmonary function test data.

[0037] Using the filter tip, the user places their lips on the oval-shaped mouthpiece 1 with anti-slip texture 2, which can firmly bite the mouthpiece 1. The first annular rubber sealing ring 14 between the mouthpiece 1 and the connector 4 ensures the airtightness of the connection between the two and prevents gas leakage.

[0038] The user then exhales, and the air enters through the mouthpiece 1. First, it passes through the pre-filter layer 11, where the non-woven fabric initially blocks larger particles of impurities. Next, the air passes through the middle filter layer 12, where the meltblown fabric, with its fine fiber structure, further filters out even smaller particles and bacteria. Finally, the air passes through the high-filtration layer 13, where the treated polypropylene material electrostatically adsorbs residual microparticles, ensuring the purity of the air entering the pulmonary function instrument. This reduces the impact of impurities on the accuracy of pulmonary function test results, making the test data more reliable and preventing cross-infection of viruses caused by multiple people using the pulmonary function instrument.

Claims

1. A filter tip for connecting multiple models of pulmonary function instruments, comprising a mouthpiece (1), a filter membrane (3), and a connector (4), characterized in that, The mouthpiece (1) is connected to the connector (4) at its end. A fixing groove (9) is provided between the mouthpiece (1) and the connector (4). A filter membrane (3) is fixedly connected in the fixing groove (9). The filter membrane (3) includes a primary filter layer (11), a middle filter layer (12), and a high filter layer (13) arranged in sequence. The end of the mouthpiece (1) away from the connector (4) is elliptical. A connection interface (5) is provided at the end of the connector (4) away from the mouthpiece (1). The inner sidewall of the connector (4) near the connection interface (5) is a stepped structure. The stepped structure includes multiple connecting segments (7) of different diameters.

2. The filter tip for connecting multiple models of pulmonary function instruments according to claim 1, characterized in that, The outer wall surface of the mouthpiece (1) is provided with anti-slip texture (2).

3. The filter tip for connecting multiple models of pulmonary function instruments according to claim 1, characterized in that, The primary filter layer (11) is made of non-woven fabric; the secondary filter layer (12) is made of meltblown fabric; and the high filter layer (13) is made of polypropylene.

4. The filter tip for connecting multiple models of pulmonary function instruments according to claim 1, characterized in that, A sealing structure is provided between the bite (1) and the connector (4), and the sealing structure is a first annular rubber sealing ring (14).

5. A filter tip for connecting multiple models of pulmonary function instruments according to claim 1, characterized in that, The inner wall of the connector (4) is uniformly connected with a plurality of anti-slip strips (15), and the anti-slip strips (15) are arranged longitudinally corresponding to the stepped structure.

6. A filter tip for connecting multiple models of pulmonary function instruments according to claim 5, characterized in that, The end of the connector (4) away from the bite (1) is fixedly connected with a second annular rubber sealing ring (16), and the connector (4) is provided with a third annular rubber sealing ring (17) at the corresponding connection section (7).

7. A filter tip for connecting multiple models of pulmonary function instruments according to claim 6, characterized in that, The transition portions of the multiple connecting segments (7) are set to rounded corners (8).

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