Respiratory training device

Abstract

The utility model discloses a respiratory training device. The device comprises a machine shell with an air storage tank and a vacuum tank, an air suction pipe communicated with the air storage tank, an air exhalation pipe communicated with the vacuum tank, a first electric valve arranged on the air storage tank, a second electric valve arranged on the vacuum tank, a first sensor arranged on the air exhalation pipe and a second sensor arranged on the air suction pipe. The main control board is arranged in the machine shell and electrically connected with the first electric valve and the second electric valve; wherein the first sensor and the second sensor are both used for detecting pipeline pressure and are electrically connected with the main control board; when the pressure of the air suction pipe is too large, the main control board receives a pressure signal and controls the first electric valve to automatically adjust the air supply flow of the air storage tank; when the pressure of the expiration tube is too high, the main control board receives a pressure signal and controls the second electric valve to automatically adjust the negative pressure flow of the vacuum tank; according to the utility model, the sensor is matched with the main control board, so that the air flow, the air flow speed and the like can be adaptively adjusted, and the requirements of respiratory training are met.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a breathing trainer. Background Art

[0002] A breathing trainer is a medical device used to assist breathing training and improve respiratory function. It is based on the principle of respiratory physiology. By providing continuous pressure and airflow, the patient's lungs are continuously expanded and contracted, thereby simulating normal breathing movements, promoting respiratory muscle contraction, and improving vital capacity and respiratory function. During the breathing training process, the patient inhales oxygen through a mask or mouthpiece, and then exhales the oxygen under the control of a breathing valve to guide the establishment of a normal breathing pattern and improve respiratory function. Currently, most existing breathing trainers use an adjustable resistance device, and users can increase or decrease the resistance of breathing according to their needs. This device can help users gradually increase the strength and endurance of their respiratory muscles, but there are problems such as complex operation, imprecise or inflexible adjustment. It is difficult for users to adjust according to their specific needs and goals, and it is impossible to provide a flexible training intensity adjustment function, which affects the effect of breathing training. In addition, users also need to spend a long time learning how to correctly operate and adjust the equipment, which affects the user experience.

[0003] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to provide a breathing training device which can effectively solve the above technical problems.

[0005] In order to achieve the purpose of this utility model, the following technical solutions are adopted:

[0006] A breathing trainer, characterized in that it comprises a housing with an air storage tank and a vacuum tank, an inhalation pipe connected to the air storage tank, an exhalation pipe connected to the vacuum tank, a first electric valve arranged on the air storage tank, a second electric valve arranged on the vacuum tank, a first sensor arranged on the exhalation pipe, a second sensor arranged on the inhalation pipe, and a main control board arranged in the housing and electrically connected to the first electric valve and the second electric valve respectively;

[0007] Among them, the first sensor and the second sensor are both used to detect pipeline pressure and are electrically connected to the main control board; when the pressure in the intake pipe is too high, the main control board receives the pressure signal and controls the first electric valve to automatically adjust the gas supply flow of the gas tank; when the pressure in the exhalation pipe is too high, the main control board receives the pressure signal and controls the second electric valve to automatically adjust the negative pressure flow of the vacuum tank.

[0008] Furthermore, one end of the housing is detachably connected with a first hose connected to the inhalation pipe, a second hose connected to the exhalation pipe, and a breathing mask detachably connected to the first hose and the second hose respectively, and the breathing mask is detachably connected with a Y-shaped connecting pipe.

[0009] Furthermore, a third sensor for detecting gas flow is provided at one end of the inhalation tube close to the first sensor, and a fourth sensor for detecting negative pressure flow is provided at one end of the exhalation tube close to the second sensor; wherein the third sensor and the fourth sensor are both flow sensors, and the third sensor and the fourth sensor are both connected to the main control board with wires.

[0010] Furthermore, a display screen connected to the main control board by wires is provided at one end of the housing, and the display screen is a touch screen.

[0011] Furthermore, a battery for supplying electric energy and a control switch for controlling the power supply of the battery are provided at one end of the casing; a speaker is provided on the inner wall of one end of the casing close to the display screen, the speaker is connected to the main control board by wires, and a power socket electrically connected to the battery is provided at one end of the casing.

[0012] Furthermore, the housing is provided with a breathing light for displaying the flow of airflow, and the breathing light is connected to the main control board by wires.

[0013] Furthermore, one end of the gas storage tank is provided with a gas storage port for storing gas, and one end of the vacuum tank is provided with a pressure storage port for storing pressure, and one end of the gas storage port and the pressure storage port both penetrate the casing and extend to the outer end of the casing.

[0014] Furthermore, the gas storage tank is mechanically connected to an inhalation safety valve, and the vacuum tank is mechanically connected to an exhalation safety valve, wherein the gas storage tank and the inhalation pipe are interconnected through the inhalation safety valve, and the vacuum tank and the exhalation pipe are interconnected through the exhalation safety valve.

[0015] Furthermore, a plurality of rubber pads are evenly arranged at the bottom end of the housing.

[0016] Furthermore, an elastic fixing belt is provided at one end of the breathing mask.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the utility model can adaptively adjust the airflow volume, airflow speed, etc. through the cooperation between the sensor and the main control board to meet the requirements of breathing training. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] Figure 1 It is a three-dimensional diagram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Figure 3 It is an exploded view of the utility model.

[0022] Figure 4 It is a left view of the utility model.

[0023] Figure 5 It is the right view of the utility model.

[0024] Figure 6 It is a respiratory waveform diagram of the medical order interface of the present utility model.

[0025] Figure 7 It is a schematic diagram of the breathing curve of the present utility model.

[0026] In the figure: 1. casing, 2. inhalation pipe, 3. exhalation pipe, 4. gas storage tank, 5. vacuum tank, 6. first electric valve, 7. second electric valve, 8. first sensor, 9. second sensor, 10. main control board, 11. first hose, 12. third sensor, 13. fourth sensor, 14. display screen, 15. control switch, 16 second hose, 17. gas storage port, 18. pressure storage port, 19. inhalation safety valve, 20. exhalation safety valve, 21. Y-shaped connecting pipe, 22. battery, 23. microphone, 24. breathing light, 25. fixing belt, 26. breathing mask, 27. rubber pad, 28. power socket. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the utility model, rather than all embodiments.

[0028] In the description of the present utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as limiting the scope of protection of the present utility model. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] like Figures 1 to 7 As shown, a breathing trainer includes a housing 1 with an air storage tank 4 and a vacuum tank 5, an inhalation pipe 2 connected to the air storage tank 4, an exhalation pipe 3 connected to the vacuum tank 5, a first electric valve 6 arranged on the air storage tank 4, a second electric valve 7 arranged on the vacuum tank 5, a first sensor 8 arranged on the exhalation pipe 3, a second sensor 9 arranged on the inhalation pipe 2, and a main control board 10 arranged in the housing 1 and electrically connected to the first electric valve 6 and the second electric valve 7 respectively; wherein the first sensor 8 and the second sensor 9 are both used to detect pipeline pressure and are electrically connected to the main control board 10; when the pressure in the inhalation pipe 2 is too high, the main control board 10 receives the pressure signal and controls the first electric valve 6 to automatically adjust the air supply flow of the air storage tank 4; when the pressure in the exhalation pipe 3 is too high, the main control board 10 receives the pressure signal and controls the second electric valve 7 to automatically adjust the negative pressure flow of the vacuum tank 5.

[0030] It is worth noting that Figures 1 to 5As shown, one end of the housing 1 is plugged with a first hose 11 connected to the inhalation pipe 2, a second hose 16 connected to the exhalation pipe 3, and a breathing mask 26 plugged with the first hose 11 and the second hose 16 respectively, and the breathing mask 26 is detachably connected with a Y-shaped connecting pipe 21; in this embodiment, one end of the housing 1 is provided with a first opening that is interconnected with the inhalation pipe 2, the first hose 11 passes through the first opening so that the first hose 11 and the inhalation pipe 2 are interconnected, and one end of the housing 1 close to the first opening is provided with a second opening for interconnecting with the exhalation pipe 3, the second hose 16 passes through the second opening so that the second hose 16 and the exhalation pipe 3 are interconnected, and the Y-shaped connecting pipe 21 is detachably connected to the breathing mask 26; The Y-shaped connecting tube 21 is provided with a forked channel as a forked end, and the first hose 11 and the second hose 16 are respectively plugged into the forked ends. The end of the Y-shaped channel tube 21 away from the forked end is a connecting end, which is plugged into the breathing mask 26, so that the first hose 11 and the second hose 16 are connected to the breathing mask 26 through the Y-shaped connecting tube 21. In actual use, the first hose 11 and the second hose 16 cooperate with each other to form a dual channel for breathing training, which is conducive to the flow of oxygen and vacuum negative pressure in the inhalation tube 2 and the exhalation tube 3 respectively, avoiding the mutual resistance of oxygen and vacuum negative pressure to produce dead space when the user is performing breathing training, thereby affecting the user's use effect.

[0031] Specifically, Figures 1 to 5As shown, a display screen 14 connected to the main control board 10 by wires is provided at one end of the casing 1, and the display screen 14 is a touch screen. A third sensor 12 for detecting gas flow is provided at one end of the inhalation pipe 2 close to the first sensor 8, and a fourth sensor 13 for detecting negative pressure flow is provided at one end of the exhalation pipe 3 close to the second sensor 9; wherein the third sensor 12 and the fourth sensor 13 are both flow sensors, and the third sensor 12 and the fourth sensor 13 are both connected to the main control board 10 by wires; in this embodiment, the main control board 10 controls the air flow rate and negative pressure flow of the inhalation pipe 2 and the exhalation pipe 3 respectively through the first electric valve 6 and the second electric valve 7, and the main control board 10 is electrically connected to the first sensor 8, the second sensor 9, the third sensor 12 and the fourth sensor 13 in the inner cavity of the casing 1, and the first sensor 8, the second sensor 9, the third sensor 12 and the fourth sensor 13 are connected to the first electric valve 6 and the second electric valve 7. The signals detected by the four sensors 13 are all fed back to the display screen 14 through the main control board 10, so that the main control board 10 automatically adjusts the first electric valve 6 and the second electric valve 7 according to the feedback data, so that the airflow rate and negative pressure flow of the inhalation tube 2 and the exhalation tube 3 are guaranteed to be at the set level; in actual operation, the first sensor 8 and the second sensor 9 monitor the pipeline pressure. When it exceeds the safety range, the first sensor 8 and the second sensor 9 automatically feed back to the main control board 10, so that the main control board 10 controls the first electric valve 6 and the second electric valve 7 to automatically close to protect the patient's safety; the third sensor 12 and the fourth sensor 13 monitor the gas flow rate in the pipeline, feed back to the main control board 10, and then feed back to the first electric valve 6 and the second electric valve 7 through the main control board 10, thereby automatically adjusting the opening size of the first electric valve 6 and the second electric valve 7, thereby reducing the difficulty of using this embodiment.

[0032] Furthermore, the main control board 10 is equipped with built-in software, through which the display screen 14 can display the doctor's order interface, such as Figure 6 and Figure 7 As shown, a respiratory waveform is displayed on the doctor's order interface. The respiratory curve is divided into five points AE. Each point can be moved arbitrarily + data input is simple to operate, and a respiratory waveform is divided into the inhalation stage, peak pressure, plateau stage, exhalation stage, plateau stage, interval period, etc. The doctor's order interface can be stretched and parameters can be set arbitrarily. AB: In the inhalation stage, the inhalation time t1 and tidal volume VT can be set. At the same time, the AB segment can be divided into N stages through parameter setting to form a stepped inhalation; CD exhalation stage. Similarly, in this implementation, various curve styles and breathing modes will be preset in the main control board 10 to facilitate the opening of medical orders. When the patient is training, there are voice and visual prompts to inhale, breathe, hold breath, inhale hard, breathe hard, restart, etc.;

[0033] To further optimize this embodiment, Figures 1 to 5As shown, the housing 1 is provided with a breathing light 24 for displaying the flow of airflow, and the breathing light 24 is connected to the main control board 10 by wires; in this embodiment, the breathing light 24 is provided with two changing colors, which are divided into a first color and a second color. The breathing light 24 is electrically connected to the first sensor 8 through the main control board 10 and controls the flashing of the first color according to the detection data of the first sensor 8. The breathing light 24 is also electrically connected to the second sensor 9 through the main control board 10 and controls the flashing of the second color according to the detection data of the second sensor 9; in actual operation, when the user inhales, the breathing light 24 flashes the first color according to the data detected by the first sensor 8, indicating that the user is inhaling, and when the user exhales, the breathing light 24 flashes the second color according to the data detected by the second sensor 9, indicating that the user is exhaling. The alternating flashing of the two colors of the breathing light 24 makes it convenient for users or medical staff to intuitively detect the use effect of this embodiment, which is convenient for use.

[0034] Further, such as Figures 1 to 5 As shown, a battery 22 for supplying electric energy and a control switch 15 for controlling the power supply of the battery 22 are also provided at one end of the casing 1; wherein, a sound tube 23 is provided on the inner wall of the end of the casing 1 close to the display screen 14, and the sound tube 23 is connected to the main control board 10 by wire, and a power socket 28 electrically connected to the battery 22 is provided at one end of the casing 1; in this embodiment, the battery 22 is connected to the main control board 10 by wire, and the power connection interface 28 is provided at one end of the casing 1 provided with a first hose 11, and the power connection interface 28 is used to connect to an external power supply to replenish electric energy for the battery 22, and the battery 22 enables the present embodiment to continue to be used when the external power supply cannot be connected, thereby effectively enhancing the applicability of the present embodiment; it is worth noting that a plurality of sound outlet holes are evenly provided at one end of the casing 1 provided with the display screen 14, and the sound tube 23 is provided on the inner wall of the casing 1 and adhered to the sound outlet hole, and the sound tube 23 is connected to the main control board 10 by wire, so that the main control board 10 can be connected through The program set by the user controls the microphone 23 to emit a prompt sound. During the actual operation, the user sets the degree of exhalation and inhalation in advance. After the user finishes exhaling, he relaxes and stops actively breathing. The main control board 10 controls the microphone 23 to emit an inhalation prompt sound. The main control board 10 controls the first electric valve 6 to automatically open to a suitable size according to the patient's inhalation setting, and the oxygen in the gas tank 4 actively fills the patient's lungs to the set value; then the first electric valve 6 is closed, the exhalation prompt sound emits a breathing prompt, and the main control board 10 controls the second electric valve 7 to open, and also automatically adjusts the opening and closing size of the second electric valve 7 according to the exhalation setting value, so that the patient exhales according to the set exhalation flow rate; the user is guided to exhale or inhale through the microphone 23, which reduces the difficulty of using this embodiment and enhances the user experience. Training can be carried out according to different breathing modes required for different examinations, treatments, and rehabilitation, so that the trainee can master the requirements of breathing frequency, rhythm, depth, breath holding, etc., and enhance the training effect of this embodiment.

[0035] like Figures 1 to 5 As shown, one end of the gas storage tank 4 is provided with a gas storage port 17 for storing gas, and one end of the vacuum tank 5 is provided with a pressure storage port 18 for storing pressure, and one end of the gas storage port 17 and the pressure storage port 18 both penetrate the casing 1 and extend to the outer end of the casing 1; in this embodiment, the gas storage port 17 can be connected to the central oxygen supply system as an air source, and the pressure storage port 18 can be connected to the central negative pressure system as a power source. The central oxygen supply system provides a gas supply pressure of 3-5kPa, and the gas storage tank stores gas, which plays a role in inflating the lungs during training; the central negative pressure system is connected to the vacuum tank to provide a negative pressure of about -0.05kPa, which plays a role of forced passive exhalation during training, thereby enhancing the use effect of this embodiment.

[0036] like Figures 1 to 5 As shown, an inhalation safety valve 19 is mechanically connected to the gas storage tank 4, and an exhalation safety valve 20 is mechanically connected to the vacuum tank 5, wherein the gas storage tank 4 and the inhalation pipe 2 are interconnected through the inhalation safety valve 19, and the vacuum tank 5 and the exhalation pipe 3 are interconnected through the exhalation safety valve 20; in this embodiment, the inhalation safety valve 19 and the exhalation safety valve 20 are also electronic valves and are both connected to the main control board 10 by wires, the inhalation safety valve 19 is used to control the opening and closing of the gas storage tank 4, and the exhalation safety valve 20 is used to control the opening and closing of the vacuum tank 5. The safety of this embodiment can be effectively enhanced by the inhalation safety valve 19 and the exhalation safety valve 2. On the other hand, the start and stop of the inhalation safety valve 19 and the exhalation safety valve 20 are controlled by the main control board 10, which is convenient for users to use.

[0037] like Figures 1 to 5 As shown, a plurality of rubber pads 27 are evenly arranged at the bottom of the housing 1; the rubber pads 27 are arranged in this embodiment to prevent the embodiment from vibrating during use, so that the embodiment can stand on a flat surface.

[0038] like Figures 1 to 5 As shown, an elastic fixing belt 25 is provided at one end of the breathing mask 26; in this embodiment, the elastic fixing belt 25 is provided on both sides of the breathing mask 26, and is used to be wrapped around the user's head. In actual use, the breathing mask 26 is buckled on the user's face, and the elastic fixing belt 25 is sleeved on the user's head. The elastic characteristics of the fixing belt 25 can effectively fix the breathing mask 25, and can further enhance the tightness of the connection between the breathing mask 26 and the user's face, thereby improving the user experience.

[0039] It is worth noting that the present embodiment also has a corresponding training method. In the specific use process, the user wears the breathing mask 26 and turns on the present embodiment by pressing the control switch 15; the inhalation safety valve 19 is first opened through the display screen 14, and the patient is asked to take a full breath, and then the exhalation safety valve 20 is opened to let the patient exhale completely, and the maximum value of the patient's vital capacity (tidal volume) during inhalation and exhalation is measured, and then the inhalation safety valve 19 and the exhalation safety valve 20 are opened together, and the patient breathes freely. According to the measured vital capacity data of the patient and the different training needs of the patient, different training modes are selected, and parameters such as tidal volume, inhalation time, exhalation time, and respiratory frequency are customized. Then start training, close the first electric valve 6, the second electric valve 7, and the exhalation safety valve 20, the patient relaxes after exhalation, stops active breathing, the main control board 10 prompts to inhale, the inhalation safety valve 19 automatically opens the appropriate size according to the patient's inhalation setting, and the oxygen in the gas tank 4 actively fills the patient's lungs to the set value; then the inhalation safety valve 19 is closed, the prompt sound sends a breathing prompt, the exhalation safety valve 20 is opened, and the valve opening and closing size is automatically adjusted according to the exhalation setting value, so that the patient exhales according to the set exhalation flow, where the gas flow = set tidal volume / inhalation (exhalation) time. After three breathing cycles of passive training, change to active breathing of the patient, the inhalation safety valve 19 and the exhalation safety valve 20 are opened together, the first electric valve 6 is opened first, and the patient inhales according to the training mode; then the first electric valve 6 is closed, the second electric valve 7 is opened, and the patient exhales according to the same requirements, and then the patient's breathing training score is given, and the above steps are repeated until the patient's breathing pattern meets the requirements.

[0040] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0041] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A breathing training device, characterized in that: The invention comprises a housing (1) having an air storage tank (4) and a vacuum tank (5), an air intake pipe (2) connected to the air storage tank (4), an air exhalation pipe (3) connected to the vacuum tank (5), a first electric valve (6) arranged on the air storage tank (4), a second electric valve (7) arranged on the vacuum tank (5), a first sensor (8) arranged on the air exhalation pipe (3), a second sensor (9) arranged on the air intake pipe (2), and a main control board (10) arranged in the housing (1) and electrically connected to the first electric valve (6) and the second electric valve (7) respectively; Wherein, the first sensor (8) and the second sensor (9) are both used to detect pipeline pressure and are electrically connected to the main control board (10); when the pressure of the intake pipe (2) is too high, the main control board (10) receives the pressure signal and controls the first electric valve (6) to automatically adjust the gas supply flow of the gas storage tank (4); when the pressure of the exhalation pipe (3) is too high, the main control board (10) receives the pressure signal and controls the second electric valve (7) to automatically adjust the negative pressure flow of the vacuum tank (5).

2. A breathing training device as claimed in claim 1, characterized in that: One end of the housing (1) is detachably plugged with a first hose (11) connected to an inhalation pipe (2), a second hose (16) connected to an exhalation pipe (3), and a breathing mask (26) detachably connected to the first hose (11) and the second hose (16), respectively; the breathing mask (26) is detachably connected to a Y-shaped connecting pipe (21).

3. A breathing training device as claimed in claim 2, characterized in that: A third sensor (12) for detecting gas flow is provided at one end of the inhalation tube (2) close to the first sensor (8), and a fourth sensor (13) for detecting negative pressure flow is provided at one end of the exhalation tube (3) close to the second sensor (9); wherein the third sensor (12) and the fourth sensor (13) are both flow sensors, and the third sensor (12) and the fourth sensor (13) are both connected to the main control board (10) by wires.

4. A breathing training device as claimed in claim 3, characterized in that: A display screen (14) connected to the main control board (10) by electric wires is provided at one end of the housing (1), and the display screen (14) is a touch screen.

5. A breathing training device as claimed in claim 4, characterized in that: One end of the housing (1) is also provided with a battery (22) for supplying electric energy and a control switch (15) for controlling the power supply of the battery (22); wherein a sound tube (23) is provided on the inner wall of one end of the housing (1) close to the display screen (14), the sound tube (23) is connected to the main control board (10) by wire, and one end of the housing (1) is provided with an electrical socket (28) electrically connected to the battery (22).

6. A breathing training device as claimed in claim 5, characterized in that: The housing (1) is provided with a breathing light (24) for displaying the flow of airflow, and the breathing light (24) is connected to the main control board (10) by electric wires.

7. A breathing training device as claimed in claim 6, characterized in that: One end of the gas storage tank (4) is provided with a gas storage port (17) for storing gas, and one end of the vacuum tank (5) is provided with a pressure storage port (18) for storing pressure, and one end of each of the gas storage port (17) and the pressure storage port (18) penetrates the casing (1) and extends to the outer end of the casing (1).

8. A breathing training device as claimed in claim 1, characterized in that: The gas storage tank (4) is mechanically connected to an inhalation safety valve (19), and the vacuum tank (5) is mechanically connected to an exhalation safety valve (20), wherein the gas storage tank (4) and the inhalation pipe (2) are interconnected via the inhalation safety valve (19), and the vacuum tank (5) and the exhalation pipe (3) are interconnected via the exhalation safety valve (20).

9. A breathing training device as claimed in claim 1, characterized in that: A plurality of rubber pads (27) are evenly arranged at the bottom end of the casing (1).

10. A breathing training device as claimed in claim 2, characterized in that: An elastic fixing belt (25) is provided at one end of the breathing mask (26).

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