Lung function rehabilitation training device

Abstract

The utility model relates to the technical field of medical instruments, and discloses a lung function rehabilitation training device which comprises a base, a training tube is connected to the upper surface of the base in an inserted mode, and a floating ball, a hose, a thin film and a mouth holding device are arranged in the training tube. The device is reasonable in structure, a user takes out the training device, takes out the placing plate from one side of the base, selects buccal devices with different sizes according to different users, inserts one end of the buccal device into one end of the hose, inserts the other end of the hose into the fixed seat, and puts the buccal device into the mouth, so that the user can conveniently take out the training device. The teeth of a user bite the contact pad on the surface of the buccal device, and the teeth are limited by the positioning ring on the surface of the buccal device, so that different users can conveniently carry out respiratory training, the application range is wider, the possibility of air leakage when the user carries out respiratory training by using an improper buccal device is reduced, and the use experience of the user is improved. And the possibility that the teeth feel uncomfortable when the user is trained for a long time is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a lung function rehabilitation training device. Background Technology

[0002] When lung damage, post-operative conditions, chronic cough, or decreased respiratory muscle strength occur, the normal physiological function of the lungs will be affected, leading to problems such as decreased oxygen intake, increased respiratory rate, weak cough, and difficulty in expectorating phlegm. In such cases, doctors will recommend that patients perform lung function exercises to improve respiratory muscle strength, chest expansion, and vital capacity. There are many ways to perform lung function exercises, among which blowing up balloons is more suitable for the initial stage of lung function training and for patients with limited mobility. Existing lung function training devices work on a similar principle to blowing up balloons, allowing patients to exercise their lung function through repeated inhalation and exhalation.

[0003] A pulmonary function rehabilitation trainer disclosed in Chinese Utility Model Patent Application Publication No. CN218357197U, although the first elastic airbag and the cover are detachably connected to the air tube, and the first elastic airbag and the cover can be used for single use or disinfected and reused after use, avoiding the trainer not being cleaned for a long time and thus affecting the patient's health, the existing trainer cannot replace the mouthpiece according to different users, which may lead to air leakage and reduce the training effect. During long-term training, users may feel discomfort in their teeth, making it inconvenient to adjust the trainer. The training is too monotonous, and the trainer may not achieve the training effect in the later stages. Therefore, we propose a new device to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a lung function rehabilitation trainer, which solves the problems that existing trainers cannot replace the mouthpiece according to different users, may leak air, are inconvenient to adjust, and may fail to achieve the training effect in the later stages.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pulmonary function rehabilitation trainer includes a base, a training tube inserted into the upper surface of the base, a float inside the training tube, a connecting tube sleeved on the upper part of the training tube, a docking seat inserted into the upper surface of the connecting tube, a main air passage plate inserted into the upper surface of the docking seat, a docking cover inserted into the upper surface of the docking seat, a secondary air passage plate inserted into one end of the connecting tube, an adjusting seat rotatably connected to one end of the connecting tube, a fixing tube rotatably connected to one side of the adjusting seat, a connecting tube inserted into the lower surface of the fixing tube, a fixing seat inserted into one end of the fixing tube, a flexible tube inserted into one side of the fixing seat, and a mouthpiece inserted into one end of the flexible tube.

[0008] Optionally, a thin film is installed inside the training tube. The thin film has a certain elasticity and there are three of them. The thin film is made of silicone.

[0009] Optionally, an air outlet pipe is inserted into the upper surface of the docking cover, and multiple air passage holes are opened on the surface of the main air passage plate.

[0010] Optionally, the surface of the auxiliary air vent plate is provided with a plurality of air vent holes, and the interior of the adjusting seat is provided with a baffle plate, the surface of which is provided with a plurality of air vent holes.

[0011] Optionally, the surface of the mouthpiece is provided with a positioning ring, and the number of mouthpieces is three.

[0012] Optionally, the surface of the mouthpiece is provided with a contact pad, and the contact pad is made of silicone.

[0013] Optionally, the base has an internal placement slot, and a placement plate is snapped onto one side of the base.

[0014] Optionally, a support plate is installed on the lower surface of the base, and the number of training tubes is three, and the number of floats is three.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model has a reasonable structure. Users remove the training device and take the placement plate from one side of the base. Different sized mouthpieces are selected according to different users. One end of the mouthpiece is inserted into one end of the flexible tube, and the other end of the flexible tube is inserted into the fixed base. Users put the mouthpiece in their mouth, allowing their teeth to bite down on the contact pad on the surface of the mouthpiece. The positioning ring on the surface of the mouthpiece limits the teeth, making it convenient for different users to perform breathing training. It has a wider range of applications and reduces the possibility of air leakage when using an unsuitable mouthpiece, which could reduce the training effect. It also reduces the discomfort that users may experience during prolonged training. Inhalation is achieved by exhaling through the mouthpiece... The hose enters the connecting tube. By rotating the adjustment seat, the baffle inside the adjustment seat rotates, allowing the air passage holes on the surface of the auxiliary air passage plate and the baffle surface to interlock. The size of the air passage holes is adjusted by observing the markings on the surface of the adjustment seat. Gas enters the connecting tube through the membrane inside the training tube, causing the float to move up and down within the training tube. The user judges the user's lung function recovery based on the height and time the floats rise in multiple training tubes. This allows for convenient and quick adjustment of the training intensity to meet the needs of different training stages, thus reducing the risk of the trainer becoming ineffective in the later stages due to overly monotonous training. The gas is discharged through the air outlet tube on the surface of the connecting cover.

[0017] 2. In this utility model, the user pulls the fixed seat out from one end of the fixed tube, pulls the fixed tube and connecting tube out from one side of the adjusting seat, pulls out the adjusting seat at one end of the connecting tube, removes the connecting cover on the upper surface of the connecting seat, installs the adjusting seat on the connecting seat, installs the fixed seat on one side of the adjusting seat, and installs the connecting cover on one end of the connecting tube. The user puts the mouthpiece into their mouth for inhalation training. The gas enters the connecting tube through the air outlet tube on one side of the connecting cover, and then enters the training tube, causing the float to float in the training tube. The user judges the user's lung function recovery based on the height and time the float floats in multiple training tubes. By rotating the adjusting seat, the air passage holes on the surface of the main air passage plate correspond to the air passage holes on the surface of the baffle, allowing the gas to enter the user's mouth through the hose. This facilitates different breathing training for the user, is simple and flexible to install, and reduces the inconvenience of cleaning the trainer after use. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the exploded structure of the base of this utility model;

[0020] Figure 3 This is a schematic diagram of the explosive structure of the butt joint pipe of this utility model;

[0021] Figure 4 This is a schematic diagram of the explosion structure of the fixed tube of this utility model.

[0022] In the diagram: 1. Base; 2. Training tube; 3. Float; 4. Connecting tube; 5. Docking seat; 6. Main air passage plate; 7. Docking cover; 8. Secondary air passage plate; 9. Adjustment seat; 10. Fixing tube; 11. Connecting tube; 12. Fixing seat; 13. Hose; 14. Mouthpiece; 15. Membrane; 16. Contact pad; 17. Placement plate; 18. Support plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0024] Example: Reference Figures 1-4 The lung function rehabilitation trainer shown includes a base 1, a training tube 2 inserted into the upper surface of the base 1, a float 3 inside the training tube 2, a connecting tube 4 sleeved on the upper part of the training tube 2, a docking seat 5 inserted into the upper surface of the connecting tube 4, a main air passage plate 6 inserted into the upper surface of the docking seat 5, a docking cover 7 inserted into the upper surface of the docking seat 5, a secondary air passage plate 8 inserted into one end of the connecting tube 4, an adjusting seat 9 rotatably connected to one end of the connecting tube 4, a fixing tube 10 rotatably connected to one side of the adjusting seat 9, a connecting tube 11 inserted into the lower surface of the fixing tube 10, a fixing seat 12 inserted into one end of the fixing tube 10, a flexible tube 13 inserted into one side of the fixing seat 12, and a mouthpiece 14 inserted into one end of the flexible tube 13.

[0025] As a preferred embodiment of this example, Figures 2 to 4As shown, training tubes 2 are inserted into the upper surface of the base 1. There are three training tubes 2. A membrane 15 is installed inside the training tube 2. The membrane 15 has a certain elasticity and there are three of them. The membrane 15 is made of silicone. There are floats 3 inside the training tube 2. There are three floats 3. A connecting tube 4 is sleeved on the upper part of the training tube 2. A docking seat 5 is inserted into the upper surface of the connecting tube 4. A main air passage plate 6 is inserted into the upper surface of the docking seat 5. The surface of the main air passage plate 6 has multiple air passage holes. A docking cover 7 is inserted into the upper surface of the docking seat 5. An air outlet pipe is inserted into the upper surface of the docking cover 7. A secondary air passage plate 8 is inserted into one end of the connecting tube 4. The surface of the secondary air passage plate 8 has multiple air passage holes. An adjusting seat 9 is rotatably connected to one end of the connecting tube 4. The adjusting seat 9 is equipped with... The device includes a baffle with multiple air vents on its surface. A fixed tube 10 is rotatably connected to one side of the adjusting seat 9. A connecting tube 11 is inserted into the lower surface of the fixed tube 10. A fixed seat 12 is inserted into one end of the fixed tube 10. A flexible tube 13 is inserted into one side of the fixed seat 12. A mouthpiece 14 is inserted into one end of the flexible tube 13. The mouthpiece 14 has a positioning ring on its surface. There are three mouthpieces 14. A contact pad 16 made of silicone is provided on the surface of the mouthpiece 1. A placement groove is provided inside the base 1. A placement plate 17 is snapped onto one side of the base 1. A support plate 18 is installed on the lower surface of the base 1. During use, the user removes the trainer and takes out the placement plate 17 from one side of the base 1. The placement plate 17 is then removed according to the user's preference. Different sized mouthpieces 14 are selected. One end of the mouthpiece 14 is inserted into one end of the flexible tube 13, and the other end of the flexible tube 13 is inserted into the fixing base 12. The user puts the mouthpiece 14 into their mouth, and the user's teeth bite down on the contact pad 16 on the surface of the mouthpiece 14, so that the positioning ring on the surface of the mouthpiece 14 limits the teeth. This makes it convenient for different users to conduct breathing training, and has a wider range of applications. This reduces the possibility of air leakage when the user uses an unsuitable mouthpiece 14 for breathing training, which would reduce the training effect. It also reduces the possibility of the user feeling discomfort in their teeth during long-term training. The user inhales, and the air enters the connecting tube 11 from the mouthpiece 14 and the flexible tube 13. The user then rotates the mouthpiece 14. Adjusting seat 9 allows the baffle inside to rotate, intersecting the air passage holes on the surface of the auxiliary air passage plate 8 and the baffle surface. The size of the air passage holes can be adjusted by observing the markings on the surface of adjusting seat 9, allowing gas to enter the connecting pipe 4. This gas then enters the training tube 2 through the membrane 15, causing the float 3 to move up and down within the training tube 2. Users can judge their lung function recovery progress by observing the height and duration of the float 3's buoyancy in multiple training tubes 2. This allows for convenient and quick adjustment of training intensity, meeting the needs of different training stages and reducing the risk of monotonous training that may lead to the device becoming ineffective in later stages. It is worth noting that the inspiratory resistance adjustment range covers 5-30 cmH2O / L / s.Furthermore, the resistance value error for each gear is within ±10%, and the gas is discharged through the vent pipe on the upper surface of the docking cover 7.

[0026] The user pulls the fixing seat 12 out of one end of the fixing tube 10, pulls the fixing tube 10 and the connecting tube 11 out of one side of the adjusting seat 9, pulls out the adjusting seat 9 at one end of the connecting tube 4, removes the connecting cover 7 on the upper surface of the connecting seat 5, installs the adjusting seat 9 on the connecting seat 5, installs the fixing seat 12 on one side of the adjusting seat 9, and installs the connecting cover 7 on one end of the connecting tube 4. The user puts the mouthpiece 14 into their mouth for inhalation training. The gas enters the connecting tube 4 through the outlet tube on one side of the connecting cover 7, and then enters the training tube 2, causing the float 3 to float in the training tube 2. The user judges the user's lung function recovery based on the height and time the float 3 floats in multiple training tubes 2. The user rotates the adjusting seat 9 to make the air passage holes on the surface of the main air passage plate 6 correspond to the air passage holes on the surface of the baffle, allowing the gas to enter the user's mouth through the hose 13. This makes it convenient for the user to perform different breathing training, is simple and flexible to install, and reduces the inconvenience of cleaning the trainer after use.

[0027] The working principle of this practical application is as follows:

[0028] During use, the user removes the training device and takes the placement plate 17 from one side of the base 1. Different sized mouthpieces 14 are selected according to the user. One end of the mouthpiece 14 is inserted into one end of the flexible tube 13, and the other end of the flexible tube 13 is inserted into the fixing base 12. The user puts the mouthpiece 14 into their mouth, allowing their teeth to bite down on the contact pad 16 on the surface of the mouthpiece 14, causing the positioning ring on the surface of the mouthpiece 14 to limit the teeth. The user inhales, releasing air from the mouthpiece 14. 4 and hose 13 enter the connecting pipe 11. By rotating the adjusting seat 9, the baffle inside the adjusting seat 9 rotates, so that the air passage holes on the surface of the auxiliary air passage plate 8 and the air passage holes on the surface of the baffle intersect. By observing the markings on the surface of the adjusting seat 9, the size of the air passage holes is adjusted, and gas enters the connecting pipe 4. Gas enters the training tube 2 through the membrane 15, causing the float 3 to move up and down in the training tube 2. The user observes the height and time of the float 3 floating in multiple training tubes 2. To assess the user's lung function recovery, air is expelled through the vent tube on the upper surface of the docking cover 7. When the user needs inhalation training, the user pulls the fixing seat 12 from one end of the fixing tube 10, pulls the fixing tube 10 and connecting tube 11 from one side of the adjusting seat 9, pulls out the adjusting seat 9 at one end of the docking tube 4, removes the docking cover 7 from the upper surface of the docking seat 5, installs the adjusting seat 9 on the docking seat 5, installs the fixing seat 12 on one side of the adjusting seat 9, and installs the docking cover 7 on the docking tube 4. At one end, the user puts the mouthpiece 14 into their mouth to perform inhalation training. The gas enters the connecting pipe 4 through the air outlet tube on one side of the connecting cover 7, and then enters the training tube 2, causing the float 3 to float in the training tube 2. The user judges the user's lung function recovery based on the height and time the float 3 floats in multiple training tubes 2. By rotating the adjustment seat 9, the user aligns the air passage holes on the surface of the main air passage plate 6 with the air passage holes on the surface of the baffle, allowing the gas to enter the user's mouth through the hose 13.

[0029] Floats: Provide additional information on the material, size, and weight of the floats, as well as the impact of different floats on training intensity.

[0030] The float (3) used in this utility model is preferably made of medical-grade polypropylene (PP) or polyethylene (PE). These two materials have good biocompatibility, chemical stability, and durability, ensuring safety and hygiene during use. The size and weight of each float and its impact on training intensity are shown in the table below:

[0031] Float number Material Diameter (mm) Weight (g) Corresponding training intensity description <![CDATA[Corresponding inspiratory resistance range (cmH2O / L / s)]]> Float 1 Medical grade PP / PE Φ20 3.0 Suitable for beginners or early recovery 5 - 10 Float 2 Medical grade PP / PE Φ25 5.0 Suitable for mid-term rehabilitation training 10 - 20 Float 3 Medical grade PP / PE Φ30 8.0 Suitable for advanced training or later stages of rehabilitation 20 - 30

[0032] Regarding the specific parameters of the thin film and its role in the training process:

[0033] The film (15) used in this invention is preferably made of medical-grade silicone, which has good biocompatibility, elasticity, and durability, ensuring safety and hygiene during use. The thickness, elastic range, and function of the film during training are as follows:

[0034] Thickness: The thickness of the film is preferably 0.5mm - 1.5mm to ensure sufficient elasticity and strength, while not affecting the flow of gas.

[0035] Elastic range: The elastic range of the film is preferably 20% - 50%, so that it can produce corresponding deformation under different suction pressures, thereby playing a role in resistance adjustment.

[0036] Its role in the training process:

[0037] Resistance adjustment: The membrane is located inside the training tube (2). When the user inhales, the airflow will push the membrane to contract into the tube, forming a certain resistance, thereby increasing the difficulty of inhalation and playing the role of training the respiratory muscles.

[0038] Smooth airflow: The elasticity of the membrane can buffer the impact of airflow, making the airflow more stable and avoiding discomfort to the user.

[0039] Protecting the float: The membrane can play a certain protective role, preventing the float (3) from directly contacting the inner wall of the training tube, reducing friction and collision, and extending the life of the float.

[0040] illustrate:

[0041] Material selection: Medical-grade silicone has good biocompatibility, is non-toxic and harmless, and is suitable for use in the environment near the oral cavity.

[0042] Thickness selection: The thickness of the film needs to balance elasticity and strength. If it is too thick, it will affect gas flow, and if it is too thin, it will be easy to break.

[0043] Elasticity range selection: The elasticity range needs to be large enough to accommodate the inhalation force of different users and to effectively adjust the resistance.

[0044] Mechanism of action: The membrane generates resistance through deformation, and the magnitude of the resistance is related to the intake pressure and the elastic range of the membrane.

[0045] Regarding the target population for different sizes of mouthpieces:

[0046] This utility model provides three different sizes of mouthpieces (14) to suit the oral structures and needs of different users. The selection of mouthpiece size is mainly based on the user's age, gender, oral cavity size (especially the curvature and spacing of the upper and lower teeth), and comfort. The specific correspondence is as follows:

[0047] Mouthpiece number Size classification Recommended target audience Explanation of reasons Mouthpiece 1 small Children (approximately 6-12 years old), adults with smaller or narrower oral structures, and female users with smaller oral structures. Children have small oral cavity volume and narrow spacing between teeth; some adults or women have smaller oral cavity structures, so large mouthpieces may be difficult to hold or may cause discomfort. Mouthpiece 2 Medium Teenagers (approximately 13-18 years old), adults with medium-sized oral structures, and most female users. This size is a general size and is suitable for most average adults, especially those with a moderate level of oral structure. Mouthpiece 3 large Adult men (especially those with larger oral structures), adults with larger or wider oral structures, and users with wider interdental spaces. Adult men may have a larger average oral cavity volume and greater spacing between their teeth; some adults are born with a larger oral cavity structure, and small or medium-sized teeth may not be able to be fully contained or may feel too cramped.

[0048] Recommendation:

[0049] 1. For children: It is strongly recommended to choose a small-sized mouthpiece suitable for the child's age under adult supervision. If the child's oral development is rapid, the size may need to be adjusted accordingly.

[0050] 2. Adult use: Adults should choose according to their own oral comfort. When using for the first time, you can try the medium size first. If it feels too big or too small, then change to the small or large size. The selection criteria are that it can be comfortably held in the mouth, the teeth bite on the contact pad (16), the positioning ring (not clearly numbered in the figure, but described) can effectively limit the teeth, and there is no obvious air leakage;

[0051] 3. Special oral structures: For users with missing teeth, dentures, or other special oral structures, it is recommended to choose a slightly smaller mouthpiece and consult a doctor or professional for advice before use;

[0052] Regarding the parameters of the air vents on the main air vent, secondary air vent, and baffle plates, and their impact on training intensity:

[0053] In this utility model, the main air passage plate (6), the auxiliary air passage plate (8), and the baffle (not explicitly numbered, described as "the adjustment seat (9) has a baffle inside") are all provided with multiple air passage holes, and their specific parameters and arrangement are as follows:

[0054] Part Name Air vent diameter (mm) Number of air holes Arrangement Main functions and impacts Main air vent (6) Φ3.0 6 Evenly distributed on the plate surface As the main channel for airflow, the orifice has a relatively large diameter to ensure smooth basic airflow. The large number of orifices ensures that the overall resistance is not excessive. Secondary air vent (8) Φ2.0 4 Evenly distributed on the plate surface In conjunction with a baffle (the baffle surface has multiple air passage holes, see below for details), the size of the airflow channel can be changed by adjusting its relative position to the baffle, thereby adjusting the intake resistance. The small hole diameter provides basic resistance. baffle Φ1.5 2 Symmetrically distributed on both sides of the baffle In conjunction with the secondary air vent (8), the baffle is rotated by rotating the adjusting seat (9), changing the correspondence between the air vent and the air vent of the secondary air vent, and precisely adjusting the intake resistance. The orifice has the smallest diameter and is the main resistance adjustment component.

[0055] The effect of different vents on training intensity:

[0056] 1. Main air passage plate (6): Due to its large aperture (Φ3.0mm), even when fully open, it provides relatively little resistance. Its main function is to ensure smooth airflow in the foundation and prevent excessive resistance from preventing users from inhaling air. It has a large number of air passage holes (6), which further reduces the resistance contribution of a single hole and ensures that the foundation resistance is at a low level;

[0057] 2. Secondary air vent (8) and baffle: These two together constitute the main resistance adjustment system;

[0058] When the user inhales, the airflow first passes through the main air passage (6);

[0059] The airflow then enters the connecting pipe (4), where the airflow needs to pass through the auxiliary air passage plate (8) and the air passage holes on the baffle plate;

[0060] Adjustment process: The user rotates the adjustment seat (9) to drive the baffle to rotate. When the air passage on the baffle is aligned with the air passage on the secondary air passage plate (8), the airflow can pass through, but will be subject to less resistance (depending on the diameter and number of holes); when the air passage on the baffle is misaligned with the air passage on the secondary air passage plate (8), the effective air passage area decreases and the airflow resistance increases.

[0061] Impact of airflow resistance: Because the apertures of the baffle (Φ1.5mm, 2 holes) and the secondary air vent (Φ2.0mm, 4 holes) are smaller than those of the main air vent and are relatively fewer in number, their obstruction of airflow is more significant. By precisely adjusting the position of the baffles, various levels of inhalation resistance, from low to high, can be generated to meet the needs of different training stages. For example, the resistance is minimal when perfectly aligned and maximally maximal when completely offset.

[0062] Specific methods for adjusting inhalation resistance and calculation of resistance values ​​for different settings:

[0063] This invention precisely adjusts the inhalation resistance by rotating the adjusting seat (9). The specific method and the calculation of the resistance value for different gears are as follows:

[0064] I. Adjustment Method:

[0065] 1. Initial state: When the user starts using the device, the adjustment seat (9) may be in any position. The user first performs an inhalation test to observe the buoyancy of the float (3);

[0066] 2. Rotating adjustment seat: The user rotates the adjustment seat (9) clockwise or counterclockwise according to the resistance he feels and the buoyancy of the float (3). The baffle fixed inside the adjustment seat (9) (not explicitly numbered in the figure, described as "the adjustment seat (9) has a baffle inside") will rotate accordingly;

[0067] 3. Change the correspondence of the air passage holes: As the baffle rotates, the relative position between the air passage holes (Φ1.5mm, 2 holes) on its surface and the air passage holes (Φ2.0mm, 4 holes) on the surface of the auxiliary air passage plate (8) changes;

[0068] Reduced resistance: When the user feels excessive resistance, rotate the adjusting seat (9) to align the air passage holes on the baffle with the air passage holes on the auxiliary air passage plate as much as possible. At this time, the effective cross-sectional area of ​​the airflow channel increases, and the suction resistance decreases;

[0069] Increased resistance: When the user feels that the resistance is too low, rotate the adjusting seat (9) to make the air passage hole on the baffle and the air passage hole on the auxiliary air passage plate misalign, reducing or completely blocking the effective connection between the two. At this time, the effective cross-sectional area of ​​the airflow channel decreases and the suction resistance increases;

[0070] Observation markings: The outer surface of the adjustment seat (9) may be engraved with scale markings or gear markings (e.g., "weak", "medium", "strong"). Users can roughly determine the current resistance gear by observing these markings. The specific correspondence between the markings and the actual resistance value needs to be determined through calibration;

[0071] Determine the appropriate resistance level: The user repeatedly rotates the adjustment seat (9) and inhales to find a comfortable inhalation resistance level that meets their training needs. At this time, the float (3) should remain stable for a certain period of time, such as 5-10 seconds.

[0072] II. Calculation methods for resistance values ​​at different gear levels:

[0073] The inhalation resistance range provided by this invention covers 5-30 cmH2O / L / s, with the resistance value error for each setting within ±10%. The calculation of the resistance value for different settings is based on the following principles and steps:

[0074] Sources of basic resistance: Intake resistance mainly comes from the friction and throttling effect generated when airflow passes through the main air duct (6), the secondary air duct (8), and the baffle (located inside the regulating seat (9)). The membrane (15) also provides some basic resistance, but mainly serves as an auxiliary and buffering mechanism;

[0075] Effective area of ​​the air passage: The suction resistance is inversely proportional to the effective cross-sectional area of ​​the airflow channel. The effective area is maximized when the air passage on the baffle is aligned with the air passage on the secondary air passage plate; when they are misaligned, the effective area decreases. The rotation angle of the adjusting seat (9) determines the size of the effective area;

[0076] Resistance calculation model: Using the standard fluid dynamics model, the relationship between intake resistance (ΔP, unit cmH2O) and intake flow rate (Q, unit L / s) can be approximately expressed as: ΔP = K * (Q / A)²;

[0077] Wherein, K is the resistance coefficient related to the shape of the air passage, surface roughness, and length of the connecting pipe, which needs to be determined experimentally.

[0078] A is the effective air passage area (unit: cm²) after the airflow passes through the combination of the auxiliary air passage plate (8) and the baffle.

[0079] Q represents the user's inhalation flow rate, which usually fluctuates during training, but the user will choose a relatively stable flow rate for training.

[0080] Gear division and calibration:

[0081] Preset levels: Several levels can be preset according to training needs, such as 5 levels (e.g., level 1 - weakest, level 5 - strongest).

[0082] Calibration test: Under laboratory conditions, a standard flow meter is used to simulate the adjustment state of different speeds (by precisely controlling the angle of the regulating seat or the correspondence of the air passages), and the actual resistance value (ΔP) generated at a specific flow rate (e.g., 10 L / s) is measured.

[0083] Determine the gear range: Based on the measurement results, determine the resistance range corresponding to each gear. For example, gear 1 may correspond to 5-10 cmH2O / L / s, gear 2 to 10-15 cmH2O / L / s, and so on, up to gear 5 corresponding to 25-30 cmH2O / L / s;

[0084] Error control: By optimizing the design of the air vent, manufacturing precision, and calibration process, we ensure that the resistance value error in each gear is controlled within ±10%.

[0085] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0086] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulmonary function rehabilitation training device, comprising a base (1), characterized in that: A training tube (2) is inserted into the upper surface of the base (1). A float (3) is provided inside the training tube (2). A connecting tube (4) is sleeved on the upper part of the training tube (2). A docking seat (5) is inserted into the upper surface of the connecting tube (4). A main air vent plate (6) is inserted into the upper surface of the docking seat (5). A docking cover (7) is inserted into the upper surface of the docking seat (5). A secondary air vent plate (8) is inserted into one end of the connecting tube (4). An adjusting seat (9) is rotatably connected to one end of the connecting tube (4). A fixing tube (10) is rotatably connected to one side of the adjusting seat (9). A connecting tube (11) is inserted into the lower surface of the fixing tube (10). A fixing seat (12) is inserted into one end of the fixing tube (10). A flexible tube (13) is inserted into one side of the fixing seat (12). A mouthpiece (14) is inserted into one end of the flexible tube (13).

2. The pulmonary function rehabilitation training device according to claim 1, characterized in that: The training tube (2) has a film (15) installed inside. The film (15) has a certain elasticity and there are three of them. The material of the film (15) is silicone.

3. The pulmonary function rehabilitation training device according to claim 1, characterized in that: An air outlet pipe is inserted into the upper surface of the docking cover (7), and multiple air outlet holes are opened on the surface of the main air outlet plate (6).

4. The pulmonary function rehabilitation training device according to claim 1, characterized in that: The surface of the auxiliary air vent plate (8) is provided with multiple air vents, and the interior of the adjusting seat (9) is provided with a baffle plate, the surface of which is provided with multiple air vents.

5. A pulmonary function rehabilitation training device according to claim 1, characterized in that: The mouthpiece (14) has a positioning ring on its surface, and the number of mouthpieces (14) is three.

6. A pulmonary function rehabilitation training device according to claim 1, characterized in that: The surface of the mouthpiece (14) is provided with a contact pad (16), and the contact pad (16) is made of silicone.

7. A pulmonary function rehabilitation training device according to claim 1, characterized in that: The base (1) has a placement slot inside, and a placement plate (17) is snapped into one side of the base (1).

8. A pulmonary function rehabilitation training device according to claim 1, characterized in that: The base (1) has a support plate (18) installed on its lower surface, and the number of training tubes (2) is three, and the number of floats (3) is three.

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