Respiratory training equipment for chronic obstructive pulmonary disease patient

Abstract

The invention relates to the technical field of rehabilitation training equipment, in particular to respiratory training equipment for a chronic obstructive pulmonary disease patient. The device comprises a framework, the framework at least comprises a base, the top of the base is fixedly connected with a buffer chamber and a plurality of training chambers, the buffer chamber is communicated with an air inlet pipe used for being connected with a mouthpiece, the tops of the training chambers are provided with an air flow distribution chamber, and the tops of the training chambers are provided with mounting grooves; according to the respiratory training equipment for the chronic obstructive pulmonary disease patient, the arranged working part is used for carrying out respiratory training on the lung disease patient with the small vital capacity and the lung disease patient with the large vital capacity, and under the condition that the lung capacity of the lung disease patient is unknown, the working part can automatically switch gears according to the vital capacity; the working part comprises a training assembly, a driving assembly and a springback assembly, and when the vital capacity of the lung disease patient is small, the patient blows air to drive the training assembly to rotate in the mounting groove.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation training equipment, and specifically, to a breathing training equipment for patients with chronic obstructive pulmonary disease. Background Art

[0002] Chronic obstructive pulmonary disease (COPD), as a common chronic respiratory disease, has seriously affected the quality of life and health of patients. With the continuous development of medical technology, breathing training equipment plays an increasingly important role in the rehabilitation treatment of COPD patients.

[0003] At present, there are a variety of breathing training equipment on the market. Although some equipment with a large training and measurement range is powerful, there are some obvious deficiencies in actual applications. For COPD patients, their rehabilitation is a gradual process, and the vital capacity will change significantly during different rehabilitation cycles. However, many patients lack a clear understanding of the rehabilitation stage they are in and do not know how to judge whether their rehabilitation condition is qualified. In the existing breathing training equipment, there is a lack of a function that can automatically adjust the gear according to the patient's real-time vital capacity. This results in patients often feeling confused and inconvenient when using these equipment, unable to accurately adjust the equipment to a mode that matches their current rehabilitation status, thus affecting the training effect and the rehabilitation process.

[0004] In view of this, we propose a breathing training equipment for patients with chronic obstructive pulmonary disease to improve the deficiencies in the existing technology. Summary of the Invention

[0005] The purpose of the present invention is to provide a breathing training equipment for patients with chronic obstructive pulmonary disease to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention aims to provide a breathing training equipment for patients with chronic obstructive pulmonary disease, including a skeleton,

[0007] wherein, the skeleton at least includes a base, a buffer chamber and a plurality of training chambers are fixedly connected to the top of the base, an air inlet pipe for connecting a mouthpiece is communicated with the buffer chamber, an air flow distribution chamber is arranged at the top of the plurality of training chambers, installation slots are opened at the top of the plurality of training chambers, the plurality of training chambers are communicated with the air flow distribution chamber through the installation slots, measuring balls are arranged in the plurality of training chambers, and a communicating pipe is communicated between the buffer chamber and one of the training chambers;

[0008] A working component is slidably connected in each of the several installation grooves. The working component is used for respiratory training of lung disease patients with relatively small and large vital capacities. In the case where the vital capacity of a lung disease patient is unknown, the working component can automatically switch gears according to the size of the vital capacity. The working component includes a training component, a driving component, and a rebounding component. When the vital capacity of a lung disease patient is relatively small, the patient's exhalation drives the training component to rotate in the installation groove. The training component at least includes a driven pulley and a driving pulley. When the vital capacity of a lung disease patient is relatively large, the patient's exhalation drives the driving component to rotate, and the driving component can drive the driven pulley and the driving pulley to be misaligned with each other. When the driven pulley and the driving pulley are misaligned with each other, air flows into the interior of the training chamber.

[0009] As a further improvement of this technical solution, the training component further includes a main rod and a slide rail. The main rod is fixedly connected to the top center of the driven pulley. The slide rail is fixedly connected to the periphery of the driven pulley. The slide rail is slidably connected to the inner wall of the installation groove. The center of the driving pulley is movably connected to the main rod.

[0010] As a further improvement of this technical solution, the driving component includes a plurality of air inlet holes spacedly provided on the driving pulley. The driving component further includes a plurality of air outlet holes spacedly provided on the driven pulley. The plurality of air inlet holes and the plurality of air outlet holes are staggeredly arranged. A guide air hole is provided on one side of each of the plurality of air inlet holes away from the main rod. A driving guide vane is fixedly connected to one side of each of the plurality of guide air holes.

[0011] As a further improvement of this technical solution, the rebounding component includes a fixing ring fixedly connected to the top of the driving pulley. The inner radius of the fixing ring is greater than the radius of the main rod. A coil spring is sleeved between the fixing ring and the main rod. The inner circle of the coil spring is fixedly connected to the outer circle of the main rod. The outer circle of the coil spring is fixedly connected to the inner circle of the fixing ring.

[0012] As a further improvement of this technical solution, a communication hole is provided inside the driving pulley, and the orientation of the communication hole is perpendicular to the air inlet hole.

[0013] As a further improvement of this technical solution, sealing gaskets are provided between the bottom of the buffer chamber, the bottoms of several training chambers, and the base. The intake pipe is located at the top of the buffer chamber. The connection part of the communication pipe and the buffer chamber is located at the bottom of the buffer chamber.

[0014] As a further improvement of this technical solution, the driving guide vane includes a connecting part and an arc-shaped guiding part. The connecting part is fixedly connected to the outer circle of the driving pulley. The arc-shaped guiding part is located at one end of the connecting part away from the driving pulley.

[0015] Compared with the prior art, the beneficial effects of the present invention:

[0016] 1. In the breathing training device for patients with chronic obstructive pulmonary disease, the working components are provided to conduct breathing training for patients with relatively small and large vital capacities. When the vital capacity of a patient with pulmonary disease is unknown, the working components can automatically switch gears according to the size of the vital capacity. The working components include a training component, a driving component, and a rebounding component. When the vital capacity of a patient with pulmonary disease is small, the patient's exhalation drives the training component to rotate in the installation groove. Specifically, patients with a small vital capacity exhale a small volume of gas at a slow flow rate. The airflow pushes the driving air guide vane. At this time, the friction between the driving pulley and the main rod is greater than the friction between the slide rail and the inner wall of the installation groove. The driving air guide vane drives the driving pulley to rotate synchronously with the driven pulley in the installation groove. At the same time, the air inlet hole and the air outlet hole remain in a mutually misaligned state, and the airflow cannot enter the training chamber. The patient can only drive the driving pulley and the driven pulley to slide synchronously in the installation groove by exhaling, so that the patient can conduct low-gear and low-intensity breathing training.

[0017] 2. In the breathing training device for patients with chronic obstructive pulmonary disease, when the vital capacity of a patient with pulmonary disease is large, the patient's exhalation drives the driving component to rotate. The driving component can drive the driven pulley and the driving pulley to be mutually misaligned. When the driven pulley and the driving pulley are mutually misaligned, the airflow enters the interior of the training chamber. Specifically, patients with a large vital capacity exhale a large volume of gas at a fast flow rate. The airflow pushes the driving air guide vane. At this time, the friction between the driving pulley and the main rod is less than the friction between the slide rail and the inner wall of the installation groove. At the moment when the driving air guide vane is driven by the airflow, the driving pulley and the driven pulley are mutually misaligned. A part of the originally mutually misaligned air inlet hole and air outlet hole overlap each other, so that the exhaled airflow can enter the training chamber. The airflow entering the training chamber flows downward along the gap between the measuring ball and the inner wall of the training chamber, and blows the measuring ball originally located at the bottom of the training chamber upward. And the greater the vital capacity of the patient, the higher the measuring ball rises and the more training chambers are opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a partial sectional view of the present invention;

[0020] Figure 3 is a front view of the partial section of the present invention;

[0021] Figure 4 is a front view of the skeleton section of the present invention;

[0022] Figure 5 is a flow chart of the airflow passing through the interior of the working component of the present invention;

[0023] Figure 6It is a diagram showing the relative positional relationship between the working component of the present invention and the training chamber;

[0024] Figure 7 It is an exploded view of the working component of the present invention.

[0025] The meanings of each label in the figure are as follows:

[0026] 10. Skeleton; 11. Base; 12. Buffer chamber; 13. Training chamber; 14. Intake pipe; 15. Airflow distribution chamber; 16. Connecting pipe; 17. Installation groove; 18. Measuring ball; 19. Sealing gasket;

[0027] 20. Working component; 21. Driven pulley; 22. Main rod; 23. Driving pulley; 24. Slide rail;

[0028] 31. Intake hole; 32. Air release hole; 33. Driving air guide vane; 34. Air guide hole;

[0029] 41. Fixed ring; 42. Coil spring;

[0030] 51. Connecting hole. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0034] Embodiment

[0035] Please refer to Figures 1-4 As shown, the purpose of this embodiment is to provide a breathing training device for patients with chronic obstructive pulmonary disease, including a skeleton 10,

[0036] Among them, the skeleton 10 at least includes a base 11. A buffer chamber 12 and several training chambers 13 are fixedly connected to the top of the base 11. An air inlet pipe 14 for connecting a mouthpiece is communicated with the buffer chamber 12. An air flow distribution chamber 15 is provided at the top of several training chambers 13. Installation grooves 17 are opened at the top of several training chambers 13. Several training chambers 13 are communicated with the air flow distribution chamber 15 through the installation grooves 17. Measuring balls 18 are arranged in several training chambers 13. A communicating pipe 16 is communicated between the buffer chamber 12 and one of the training chambers 13;

[0037] In order to meet the breathing training needs of patients with relatively large vital capacity, working components 20 are slidably connected in several installation grooves 17. The working components 20 are used for breathing training of patients with lung diseases with small and large vital capacities. When the vital capacity of a patient with lung disease is unknown, the working components 20 can automatically switch gears according to the size of the vital capacity. The working components 20 include a training component, a driving component and a rebounding component. When the vital capacity of a patient with lung disease is small, the patient's exhaled air drives the training component to rotate in the installation groove 17. The training component at least includes a driven pulley 21 and a driving pulley 23. When the vital capacity of a patient with lung disease is large, the patient's exhaled air drives the driving component to rotate. The driving component can drive the driven pulley 21 and the driving pulley 23 to be misaligned with each other. When the driven pulley 21 and the driving pulley 23 are misaligned with each other, air flow enters the interior of the training chamber 13.

[0038] When the vital capacity of a patient with lung disease is small, the air flow of the gas exhaled by the patient is not sufficient to misalign the driven pulley 21 and the driving pulley 23. In order to complete breathing training for patients with lung diseases with small vital capacities.

[0039] As Figure 7 shown, first, the specific structure of the training component is disclosed. The training component further includes a main rod 22 and a slide rail 24. The main rod 22 is fixedly connected to the center of the top of the driven pulley 21. The slide rail 24 is fixedly connected to the periphery of the driven pulley 21. The slide rail 24 is slidably connected to the inner wall of the installation groove 17. The center of the driving pulley 23 is movably connected to the main rod 22;

[0040] Further, the surface of the slide rail 24 is coated with a polytetrafluoroethylene coating. When the rotational driving force of the air flow on the driving air guide vane 33 is small, the frictional force between the slide rail 24 and the installation groove 17 is small; when the rotational driving force of the air flow on the driving air guide vane 33 is large, the frictional force between the slide rail 24 and the inner wall of the installation groove 17 will increase. Patients with a small vital capacity exhale a small volume of gas at a slow flow rate. The air flow pushes the driving air guide vane 33. At this time, the frictional force between the driving pulley 23 and the main rod 22 is greater than the frictional force between the slide rail 24 and the inner wall of the installation groove 17. The driving air guide vane 33 drives the driving pulley 23 to rotate synchronously with the driven pulley 21 in the installation groove 17. At the same time, the air inlet hole 31 and the air outlet hole 32 remain in a mutually misaligned state, and the air flow cannot enter the training chamber 13. The patient can only drive the driving pulley 23 and the driven pulley 21 to slide synchronously in the installation groove 17 by blowing air, so that the patient can perform low-gear and low-intensity breathing training.

[0041] In order to automatically adjust the corresponding training gear according to the volume of the gas exhaled by the patient during the breathing training of the lung disease patient on the premise that the vital capacity of the patient is unknown.

[0042] As Figures 5-7 shown, secondly, the specific structure of the driving component is disclosed. The driving component includes a plurality of air inlet holes 31 spaced apart on the driving pulley 23. The driving component further includes a plurality of air outlet holes 32 spaced apart on the driven pulley 21. The plurality of air inlet holes 31 and the plurality of air outlet holes 32 are staggered. A guide air hole 34 is opened on one side of each of the plurality of air inlet holes 31 away from the main rod 22. A driving air guide vane 33 is fixedly connected to one side of each of the plurality of guide air holes 34;

[0043] Further, patients with a large vital capacity exhale a large volume of gas at a high flow rate. The air flow pushes the driving air guide vane 33. At this time, the frictional force between the driving pulley 23 and the main rod 22 is less than the frictional force between the slide rail 24 and the inner wall of the installation groove 17. At the moment when the driving air guide vane 33 is driven by the air flow, the driving pulley 23 and the driven pulley 21 are mutually misaligned. A part of the originally mutually misaligned air inlet hole 31 and air outlet hole 32 overlap each other, so that the exhaled air flow can enter the training chamber 13. The air flow entering the training chamber 13 flows downward along the gap between the measuring ball 18 and the inner wall of the training chamber 13, and blows the measuring ball 18 originally located at the bottom of the training chamber 13 upward. And the greater the vital capacity of the patient, the higher the measuring ball 18 rises and the more training chambers 13 are opened.

[0044] In order to facilitate the patient to use the breathing training device again next time after the lung disease patient completes the breathing training, a return spring assembly is provided to drive the driven pulley 21 and the driving pulley 23 that are mutually misaligned due to blowing air to reset.

[0045] Figure 7The positional relationship between the spring-back component and the main rod 22 and the driving pulley 23 is shown. Next, the specific structure of the spring-back component will be disclosed. The spring-back component includes a fixing ring 41 fixedly connected to the top of the driving pulley 23. The inner radius of the fixing ring 41 is larger than the radius of the main rod 22. A coil spring 42 is sleeved between the fixing ring 41 and the main rod 22. The inner ring of the coil spring 42 is fixedly connected to the outer ring of the main rod 22, and the outer ring of the coil spring 42 is fixedly connected to the inner ring of the fixing ring 41;

[0046] Further, when the driving pulley 23 and the driven pulley 21 are misaligned with each other and a part of the originally misaligned air inlet hole 31 and air outlet hole 32 overlap with each other, the driving pulley 23 rotating relative to the driven pulley 21 stretches the coil spring 42. After the lung disease patient finishes blowing, losing the driving force of the air flow, the driving pulley 23 resets under the action of the restoring force of the coil spring 42 and waits to be used during the patient's next breathing training.

[0047] A part of the air flow blown out by the patient will be blocked by the driving pulley 23, resulting in the phenomenon that the patient has sufficient vital capacity but still cannot perform high-level breathing training, thus not being sufficient to cause the driven pulley 21 and the driving pulley 23 to be misaligned with each other.

[0048] Therefore, a communication hole 51 is opened inside the driving pulley 23, and the orientation of the communication hole 51 is perpendicular to the air inlet hole 31.

[0049] The improvement lies in that: the part of the air flow blocked by the driving pulley 23 when the patient blows out the air is guided by the driving air guiding vane 33 to pass through the air guiding hole 34. The air flow passing through the air guiding hole 34 flows through the communication hole 51 inside the driving pulley 23 and then flows out from another air guiding hole 34, thereby blowing other working components 20.

[0050] In order to ensure the stability of the gas flow rate and volume of the gas blown into the air flow distribution chamber 15 by the lung disease patient and prevent measurement errors caused by reasons such as excessive force exerted in an instant during blowing.

[0051] Therefore, sealing gaskets 19 are provided between the bottom of the buffer chamber 12, the bottoms of several training chambers 13 and the base 11. The air inlet pipe 14 is located at the top of the buffer chamber 12, and the connection part of the communication pipe 16 and the buffer chamber 12 is located at the bottom of the buffer chamber 12.

[0052] The improvement lies in that: the setting of the buffer chamber 12 allows the user to have sufficient gas volume for inhalation and exhalation exercises during the breathing training process, which helps to better control the breathing rhythm and depth. The gas blown into by the patient from the air inlet pipe 14 will first fill the entire buffer chamber 12, and then the gas will pass through the communication pipe 16 from the interface at the bottom of the buffer chamber 12 and enter the air flow distribution chamber 15, preventing measurement errors caused by reasons such as excessive force exerted in an instant during blowing.

[0053] For some patients with lung diseases who have relatively small vital capacities, in order to enable the airflow of the exhaled gas to drive the rotation of the driving pulley 23 during breathing training;

[0054] Therefore, the driving air guide vane 33 includes a connecting portion and an arc-shaped guiding portion. The connecting portion is fixedly connected to the outer ring of the driving pulley 23, and the arc-shaped guiding portion is located at one end of the connecting portion away from the driving pulley 23.

[0055] The improvement lies in that after the gas exhaled by the patient enters the airflow distribution chamber 15, on the one hand, a driving force is applied to the connecting portion, so that the driving air guide vane 33 drives the driving pulley 23 to rotate; on the other hand, the airflow is guided by the arc-shaped guiding portion and passes through the air guide holes 34 into the air inlet holes 31.

[0056] In summary, the working principle of this solution is as follows: First, blow air into the buffer chamber 12 through the air inlet pipe 14, and the blown air will first fill the entire buffer chamber 12. Then, the gas will pass through the connecting pipe 16 from the interface at the bottom of the buffer chamber 12 and enter the airflow distribution chamber 15. When the vital capacity of the lung disease patient is small, the volume of the gas exhaled by the patient with a small vital capacity is small and the flow rate is slow. The airflow pushes the driving air guide vane 33. At this time, the friction between the driving pulley 23 and the main rod 22 is greater than the friction between the slide rail 24 and the inner wall of the installation groove 17. The driving air guide vane 33 drives the driving pulley 23 to rotate synchronously with the driven pulley 21 in the installation groove 17. At the same time, the air inlet holes 31 and the air outlet holes 32 remain in a mutually misaligned state, and the airflow cannot enter the training chamber 13. The patient can only drive the driving pulley 23 and the driven pulley 21 to slide synchronously in the installation groove 17 by blowing air, so that the patient can perform low-gear and low-intensity breathing training. When the vital capacity of the lung disease patient is relatively large, the volume of the gas exhaled by the patient with a large vital capacity is large and the flow rate is fast. The airflow pushes the driving air guide vane 33. At this time, the friction between the driving pulley 23 and the main rod 22 is less than the friction between the slide rail 24 and the inner wall of the installation groove 17. At the moment when the driving air guide vane 33 is driven by the airflow, the driving pulley 23 and the driven pulley 21 are mutually misaligned, and a part of the originally mutually misaligned air inlet holes 31 and air outlet holes 32 overlap each other, so that the blown airflow can enter the training chamber 13. The airflow entering the training chamber 13 goes downward along the gap between the measuring ball 18 and the inner wall of the training chamber 13, and blows the measuring ball 18 originally located at the bottom of the training chamber 13 upward. And the greater the vital capacity of the patient, the higher the height of the measuring ball 18 rising and the more the number of training chambers 13 opened.

[0057] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A breathing training device for patients with chronic obstructive pulmonary disease, characterized in that: comprising a frame (10), The skeleton (10) at least comprises a base (11), a buffer chamber (12) and a plurality of training chambers (13) are fixedly connected to the top of the base (11), an air intake pipe (14) for connecting a mouthpiece is connected to the buffer chamber (12), an air flow distribution chamber (15) is provided on the top of a plurality of the training chambers (13), a mounting groove (17) is provided on the top of a plurality of the training chambers (13), a plurality of the training chambers (13) are connected to the air flow distribution chamber (15) through the mounting groove (17), a measuring ball (18) is provided in a plurality of the training chambers (13), and a connecting pipe (16) is connected between the buffer chamber (12) and one of the training chambers (13); A plurality of the mounting grooves (17) are slidably connected with working components (20), and the working components (20) are used to perform breathing training on lung disease patients with relatively small and relatively large vital capacities. When the vital capacity of the lung disease patient is unknown, the working component (20) can automatically switch gears according to the size of the vital capacity. The working component (20) comprises a training component, a driving component and a rebound component. When the lung disease patient has relatively small vital capacity, the patient blows air to drive the training component to rotate in the mounting groove (17). The training component comprises at least a driven pulley (21) and an active pulley (23). When the lung disease patient has relatively large vital capacity, the patient blows air to drive the driving component to rotate. The driving component can drive the driven pulley (21) and the active pulley (23) to be dislocated with each other. When the driven pulley (21) and the active pulley (23) are dislocated with each other, airflow enters the interior of the training room (13).

2. The breathing training device for patients with chronic obstructive pulmonary disease according to claim 1, characterized in that: The training assembly further comprises a main rod (22) and a slide rail (24), wherein the main rod (22) is fixedly connected to the top center of the driven pulley (21), the slide rail (24) is fixedly connected to the periphery of the driven pulley (21), the slide rail (24) is slidably connected to the inner wall of the mounting groove (17), and the center of the active pulley (23) is movably connected to the main rod (22).

3. The breathing training device for patients with chronic obstructive pulmonary disease according to claim 2, characterized in that: The driving assembly comprises a plurality of air inlet holes (31) which are arranged at intervals on the driving pulley (23), and the driving assembly further comprises a plurality of air discharge holes (32) which are arranged at intervals on the driven pulley (21), the plurality of air inlet holes (31) and the plurality of air discharge holes (32) are arranged in a staggered manner, the plurality of air inlet holes (31) are provided with air guide holes (34) on a side away from the main rod (22), and one side of the plurality of air guide holes (34) is fixedly connected with a driving air guide blade (33).

4. The breathing training device for patients with chronic obstructive pulmonary disease according to claim 2, characterized in that: The rebound assembly comprises a fixing ring (41) fixedly connected to the top of the active pulley (23), the inner circle radius of the fixing ring (41) is greater than the radius of the main rod (22), a coil spring (42) is sleeved between the fixing ring (41) and the main rod (22), the inner circle of the coil spring (42) is fixedly connected to the outer circle of the main rod (22), and the outer circle of the coil spring (42) is fixedly connected to the inner circle of the fixing ring (41).

5. The breathing training device for patients with chronic obstructive pulmonary disease according to claim 3, characterized in that: A communication hole (51) is provided inside the active pulley (23), and the direction of the communication hole (51) is perpendicular to the air inlet hole (31).

6. The breathing training device for patients with chronic obstructive pulmonary disease according to claim 1, characterized in that: A sealing gasket (19) is provided between the bottom of the buffer chamber (12), the bottoms of the plurality of training chambers (13) and the base (11); the air inlet pipe (14) is located at the top of the buffer chamber (12); and the connection between the connecting pipe (16) and the buffer chamber (12) is located at the bottom of the buffer chamber (12).

7. The breathing training device for patients with chronic obstructive pulmonary disease according to claim 3, characterized in that: The driving air guide blade (33) comprises a connecting portion and an arc-shaped guiding portion, wherein the connecting portion is fixedly connected to the outer ring of the active pulley (23), and the arc-shaped guiding portion is located at an end of the connecting portion away from the active pulley (23).

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