A child lung function rehabilitation respirator

Abstract

The utility model discloses a kind of children lung function rehabilitation respirators, it is related to medical instrument technical field, specifically including ventilation pipeline and respirator ontology, the respirator ontology includes base, the middle part of the base is provided with main flow channel, the outside of the main flow channel is provided with connecting joint, the air outlet end of the ventilation pipeline is adapted with connecting joint;The top of the base is provided with inhalation training component and exhalation training component, and the inhalation training component includes first sealing cover.The children lung function rehabilitation respirator is provided with filter on ventilation pipeline, and the filter is based on inertia effect, so that droplet in airflow is impacted and adhered on droplet intercepting block, airflow and droplet are separated, the pollution received when respirator is used is reduced, and in this process, airflow does not need to pass through droplet intercepting block, so that the influence of airflow resistance is reduced while reducing the amount of droplet in blowing.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a ventilator for pediatric pulmonary function rehabilitation. Background Technology

[0002] Pediatric pulmonary rehabilitation ventilators are medical assistive devices specifically designed for children with respiratory diseases. They aim to improve lung function, strengthen respiratory muscles, and enhance the fun and compliance of the rehabilitation process through scientific training.

[0003] In the prior art, some solutions for ventilators for pediatric pulmonary function rehabilitation have been disclosed. For example, the authorized patent document with application number CN202420009689.3 discloses a breathing trainer, which includes a trainer base. The top of the trainer base is fixedly connected to multiple sets of fixing tubes. Foam balls are provided inside the fixing tubes. The top of the trainer base is provided with a support column. The top of the support column is provided with a snap-fit ​​seat. Components such as a snap-fit ​​cover are movably snapped into the snap-fit ​​seat.

[0004] The above-mentioned method can only perform blowing training. However, children's lung function rehabilitation training requires both blowing and inhalation training. Single-function trainers cannot meet the comprehensive rehabilitation needs, reduce adaptability, and when using activated carbon to filter droplets in the gas, the droplets adhere to the surface or inside of the activated carbon pores, which reduces the effective flow area and increases the frictional resistance when the airflow passes through. This can easily force users to shorten the breathing cycle or reduce the training intensity, weakening the effect of improving respiratory function.

[0005] Based on this, this application proposes a ventilator for pediatric pulmonary function rehabilitation, which can simultaneously perform inhalation and exhalation training, reducing the amount of droplets in the exhaled air while minimizing the impact on airflow resistance, thereby improving the overall effect of pediatric pulmonary function rehabilitation training. Utility Model Content

[0006] This invention provides a ventilator for pediatric pulmonary function rehabilitation, which can simultaneously perform inhalation and exhalation training. It can also reduce the amount of droplets during exhalation while minimizing the impact on airflow resistance, thereby improving the overall effect of pediatric pulmonary function rehabilitation training and solving the problems mentioned in the background art.

[0007] This utility model provides the following technical solution: a pediatric pulmonary function rehabilitation ventilator, comprising an airway and a ventilator body. The ventilator body includes a base, a main airway is provided in the middle of the base, and a connecting connector is provided on the outer side of the main airway. The outlet end of the airway is adapted to the connecting connector. An inhalation training component and an expiratory training component are provided on the top of the base. The inhalation training component includes a first sealing cover, an inhalation moving block is movably connected to the inner cavity of the first sealing cover, an inhalation one-way valve is provided on the top of the inner cavity of the first sealing cover, and the outlet end of the inhalation one-way valve is connected to the main airway through an inhalation channel. The bottom of the first sealing cover... An air intake channel is provided in the middle of the device; the exhalation training component includes a second sealing cover, an exhalation moving block is movably connected to the inner cavity of the second sealing cover, an exhalation channel is provided in the middle of the bottom of the second sealing cover, an exhaust channel is provided on the side of the bottom of the exhalation channel away from the main channel, and the side of the bottom of the exhalation channel close to the main channel is connected to the main channel through a connecting channel. A valve block adapted to both the exhaust channel and the connecting channel is movably connected to the bottom of the inner cavity of the exhalation channel. The valve block is connected to the base through a first spring. A cartoon display screen is provided on the top of the respirator body. The shape of the cartoon display screen is a cartoon character or animal shape that attracts children.

[0008] Preferably, the ventilation duct has a multi-segment structure design, including a connecting segment and a telescopic segment. One end of the connecting segment is provided with a mouthpiece adapted to a child's mouth, and the other end of the connecting segment is connected to the telescopic segment through a filter. The end of the telescopic segment away from the filter is detachably connected to a connecting joint. The filter includes several housings. The bottom end of the housing is provided with an air inlet, and the top end of the housing is provided with an air outlet. A fixing block is detachably connected to the bottom of the inner cavity of the housing, and a droplet interception block is detachably connected to the top of the fixing block on the side away from the air inlet of the housing.

[0009] Preferably, the air inlet and air outlet of the housing are located on the same side of the droplet interception block.

[0010] Preferably, a sealing ring is fitted around the outer ring of one end of the connecting section.

[0011] Preferably, the exhaust channel, connecting channel, and exhalation channel form an inverted T-shaped airflow channel, the lower end of the valve block is located within the horizontal end of the inverted T-shaped airflow channel, the upper end of the valve block is located within the vertical end of the inverted T-shaped airflow channel, and the distance between the exhaust channel and the connecting channel is the same as the length of the lower end of the valve block.

[0012] Preferably, the intake one-way valve includes a valve body embedded in the top of the inner cavity of the first sealing cover. The bottom of the valve body is provided with an exhaust port and a replenishment port. A replenishment channel is provided on the side of the valve body away from the second sealing cover, and an exhaust end is provided on the side of the valve body close to the second sealing cover. A valve plate is movably connected to the inner cavity of the valve body. The valve plate is connected to the valve body by a second spring, and the bottom of the valve plate is provided with a first connection port and a second connection port. When the first connection port and the exhaust port are misaligned, the second connection port and the replenishment port are aligned, and the replenishment port and the replenishment channel are connected through the second connection port. When the first connection port and the exhaust port are aligned, the second connection port and the replenishment port are misaligned.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This pediatric pulmonary function rehabilitation ventilator has a filter installed on the ventilation tube. The filter is based on the inertial effect, which causes droplets in the airflow to collide with and adhere to the droplet interception block, thereby separating the airflow from the droplets and reducing the contamination during the use of the ventilator. In this process, the airflow does not need to pass through the droplet interception block, thereby reducing the amount of droplets in the exhaled air and reducing the impact on airflow resistance.

[0015] 2. This pediatric pulmonary function rehabilitation ventilator allows for alternating expiratory and inspiratory training using the ventilator itself, meeting the needs of pediatric pulmonary function rehabilitation training. Furthermore, the inspiratory one-way valve automatically replenishes the first sealing cover with outside air, facilitating the repositioning of the inspiratory moving block; the valve block allows air in the second sealing cover to be automatically expelled through the exhaust channel, facilitating the repositioning of the expiratory moving block. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the connection between the ventilation pipe and the respirator body of this utility model.

[0017] Figure 2 This is an enlarged schematic diagram of the respirator body of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the respirator body of this utility model.

[0019] Figure 4 This is a schematic cross-sectional view of the shell structure of this utility model;

[0020] Figure 5 This is a schematic diagram showing the separation of the fixing block and the droplet interception block in this utility model.

[0021] In the diagram: 1. Connecting section; 2. Housing; 3. Telescopic section; 4. Biting nozzle; 5. Sealing ring; 6. Base; 7. First sealing cover; 8. Second sealing cover; 9. Intake channel; 10. Connecting joint; 11. Fixing block; 12. Droplet interception block; 13. Slot; 14. Insert rod; 15. Main channel; 16. Connecting sleeve; 17. Valve block; 18. Exhaust channel; 19. Exhalation moving block; 20. First spring; 21. Inhalation moving block; 22. Second spring; 23. Valve plate; 24. Inhalation channel; 25. Exhalation channel; 26. Connecting channel; 27. Second connecting port; 28. Exhaust port; 29. ​​Air replenishment port; 30. Air replenishment channel; 31. Valve body; 32. First connecting port; 33. Cartoon display screen; 34. Switch button. Detailed Implementation

[0022] 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.

[0023] This utility model provides an embodiment: Please refer to Figures 1-5 A pediatric pulmonary function rehabilitation respirator includes an airway and a respirator body. The airway has a multi-segment structure design, including a connecting segment 1 and a telescopic segment 3. One end of the connecting segment 1 is equipped with a mouthpiece 4 adapted to the child's mouth. Its structure is ergonomically optimized to ensure a comfortable and stable fit when the child bites, and to ensure airflow sealing during training. A sealing ring 5 is fitted around the outer ring of one end of the connecting segment 1. When the child bites the mouthpiece 4, the sealing ring 5 can fit tightly against the child's lips to form an effective airtight barrier, further improving the effect and stability of breathing training. The material and size of the sealing ring 5 and the mouthpiece 4 can be set according to needs and are not limited here.

[0024] The other end of the connecting section 1 is connected to a filter, which includes several housings 2. The air inlet end of the housing 2 away from the connecting section 1 is connected to the air outlet end of the adjacent housing 2 near the connecting section 1, forming a continuous closed airway. An air inlet end is provided on one side of the bottom of the housing 2, and an air outlet end is provided in the middle of the top of the housing 2. A fixing block 11 is detachably connected to the bottom of the inner cavity of the housing 2. A droplet interception block 12 is detachably connected to the top of the fixing block 11 on the side away from the air inlet end of the housing 2, and the air inlet end and its air outlet end of the housing 2 are both located on the same side of the droplet interception block 12. With this configuration, the airflow direction in the housing 2 can be changed during use. When the blowing airflow enters the inner cavity of the housing 2, under the action of inertia, larger droplets can collide with and adhere to the droplet interception block 12. The droplet interception block 12 reduces the droplet content in the airflow through physical interception and adsorption. In Example 2, a hydrophilic nonwoven fabric is attached to the side of the droplet interception block 12 near the air inlet end of the housing 2 via Velcro, and the hydrophilic nonwoven fabric is used to adhere the droplets.

[0025] The detachable connection between the fixing block 11 and the housing 2 allows the droplet interception block 12 to be removed, facilitating user replacement. In Embodiment 1, the top of the fixing block 11 is threaded to the bottom of the inner cavity of the housing 2. The top of the fixing block 11 is provided with a slot 13, and the bottom of the droplet interception block 12 is provided with a plug 14 that matches the slot 13. The detachable connection between the fixing block 11 and the droplet interception block 12 is achieved by using the slot 13 and the plug 14.

[0026] Connecting section 1 is connected to telescopic section 3 via a filter. A connecting sleeve 16 is provided at the end of telescopic section 3 away from connecting section 1. The ventilation pipe is connected to the air inlet of the respirator body via the connecting sleeve 16. Telescopic section 3 may be a corrugated pipe.

[0027] As described above, in use, the ventilation tube connects the child to the respirator body. The ventilation tube can extend and retract using the telescopic section 3, allowing it to adapt to various situations and improving the applicability of this application. Furthermore, as the airflow exhaled by the child flows within the ventilation tube, its direction changes within the filter. Due to inertia, droplets in the airflow can collide with and adhere to the droplet interception block 12. The droplet interception block 12 reduces the droplet content in the airflow through physical interception and adsorption, reducing contamination during respirator use. During this process, the airflow does not need to pass through the droplet interception block, thus reducing the amount of droplets in the exhaled air while minimizing the impact on airflow resistance.

[0028] The respirator body includes a base 6, a main channel 15 is provided in the middle of the base 6, and a connecting joint 10 is provided on the outer side of the main channel 15. A connecting sleeve 16 is adapted to the connecting joint 10, and the two can be snapped together. Through the connecting sleeve 16 and the connecting joint 10, the ventilation tube can be quickly disassembled and assembled from the respirator body. A sealing ring is provided between the connecting sleeve 16 and the connecting joint 10 to increase air tightness and improve the effect and stability of breathing training.

[0029] An inhalation training component is provided on one side of the top of the base 6. The inhalation training component includes a first sealing cover 7. An inhalation moving block 21 is movably connected to the inner cavity of the first sealing cover 7. The first sealing cover 7 is made of transparent material, and its material can be set according to requirements. No limitation is made here. When this application is used, children can observe the position of the inhalation moving block 21 through the first sealing cover 7. The first sealing cover 7 can be provided with scale lines. Using the scale lines, the moving height of the inhalation moving block 21 can be accurately determined.

[0030] A one-way suction valve is provided at the top of the inner cavity of the first sealing cover 7, such as... Figure 3 As shown, the intake one-way valve includes a valve body 31 embedded in the top of the inner cavity of the first sealing cover 7. The bottom of the valve body 31 is provided with an exhaust port 28 and a replenishment port 29. A valve plate 23 is movably connected to the inner cavity of the valve body 31. The valve plate 23 has an inverted T-shaped structure, dividing the inner cavity of the valve body 31 into two independent chambers. Figure 3For example, the two chambers are referred to as the left chamber and the right chamber, respectively. The right chamber has a replenishment channel 30 on the side away from the second sealing cover 8, and the left chamber has an outlet on the side close to the second sealing cover 8. The outlet of the valve body 31 is connected to the main channel 15 through the intake channel 24. The valve plate 23 is connected to the valve body 31 through the second spring 22, and the bottom of the valve plate 23 is provided with a first connection port 32 and a second connection port 27. When the intake training component is not in use, under the action of the rebound force of the second spring 22, the valve plate 23 blocks the exhaust port 28. At this time, the first connection port 32 and the exhaust port 28 are in a staggered state, and the second connection port 27 and the replenishment port 29 are in an aligned state. The replenishment port 29 is connected to the replenishment channel 30 through the second connection port 27. Outside air can enter the first sealing cover 7 through the replenishment channel 30, the second connection port 27, and the replenishment port 29. When a child is undergoing inhalation training, air from the left chamber enters the child's lungs through the inhalation channel 24, the main flow channel 15, and the ventilation tube. At this time, the left chamber is under negative pressure, while the pressure in the right chamber is higher. Under atmospheric pressure, the valve plate 23 moves to the left until the first connecting port 32 is aligned with the exhaust port 28. At this point, the second connecting port 27 and the supplementary air port 29 are misaligned, and the inner cavity of the first sealing cover 7 is connected to the inner cavity of the inhalation channel 24. When the child continues to inhale, air from the first sealing cover 7 enters the child's lungs through the inhalation channel 24, the main flow channel 15, and the ventilation tube. The inhalation channel 24, the main flow channel 15, and the ventilation tube form the inhalation training channel.

[0031] An air inlet channel 9 is provided in the middle of the bottom of the first sealing cover 7. When the gas inside the first sealing cover 7 enters the inhalation training channel, the inner cavity of the first sealing cover 7 is under negative pressure. Under atmospheric pressure, outside air can enter the first sealing cover 7 through the air inlet channel 9. During the entry process, the outside air can push the inhalation moving block 21 upward, allowing children to perform inhalation training. When the child stops inhaling, under the action of the rebound force of the second spring 22, the valve plate 23 can be reset. At this time, the exhaust port 28 is in a blocked state, and the second connection port 27 and the air replenishment port 29 are realigned. Outside air can enter the first sealing cover 7 through the air replenishment channel 30 and the air replenishment port 29, and under the action of gravity, the inhalation moving block 21 moves downward until the inhalation moving block 21 is reset. The rebound force of the second spring 22 can be set according to requirements and is not limited here.

[0032] An exhalation training component is provided on the other side of the top of the base 6. The exhalation training component includes a second sealing cover 8. An exhalation moving block 19 is movably connected to the inner cavity of the second sealing cover 8. The second sealing cover 8 is made of transparent material, and its material can be set according to requirements. No limitation is made here. When using this application, the user can judge the movement position of the exhalation moving block 19 through the second sealing cover 8. The second sealing cover 8 can be provided with scale lines. Using the scale lines, the user can accurately judge the position of the exhalation moving block 19.

[0033] An exhalation channel 25 is provided in the middle of the bottom of the second sealing cover 8. An exhaust channel 18 is provided on the side of the bottom of the exhalation channel 25 away from the main channel 15. The side of the bottom of the exhalation channel 25 close to the main channel 15 is connected to the main channel 15 through a connecting channel 26. The exhaust channel 18, the connecting channel 26 and the exhalation channel 25 form an inverted T-shaped airflow channel. A valve block 17 that is adapted to both the exhaust channel 18 and the connecting channel 26 is movably connected to the bottom of the inner cavity of the exhalation channel 25. The lower end of the valve block 17 is located in the horizontal end of the inverted T-shaped airflow channel, and the upper end of the valve block 17 is located in the vertical end of the inverted T-shaped airflow channel. The upper end of the valve block 17 is connected to the base 6 through a first spring 20. When the exhalation training component is not in use, under the action of the rebound force of the first spring 20, the upper end of the valve block 17 can fit tightly against the inner wall of the exhalation channel 25. At this time, the lower end of the valve block 17 blocks the connecting channel 26.

[0034] Furthermore, the distance between the exhaust channel 18 and the connecting channel 26 is the same as the length of the lower end of the valve block 17. When the upper end of the valve block 17 is tightly fitted to the inner wall of the exhalation channel 25, the length of the part of the valve block 17 located inside the connecting channel 26 is greater than the distance between the valve block 17 and the exhaust channel 18. When the valve block 17 is separated from the connecting channel 26, the lower end of the valve block 17 is located inside the exhaust channel 18, blocking the exhaust channel 18. The size of the valve block 17 can be set according to requirements and is not limited here. When the exhalation training component is in use, under the thrust of exhalation, the valve block 17 can move away from the connecting channel 26 until the connecting channel 26 and the exhalation channel 25 are in a connected state. At this time, the valve block 17 blocks the exhaust channel 18 to prevent exhalation leakage. When exhalation stops, under the action of the rebound force of the first spring 20, the valve block 17 can return to its original position. At this time, the exhaust channel 18 is in an open state, and the exhalation moving block 19 gradually falls under the action of gravity. When the exhalation moving block 19 falls, the gas in the second sealing cover 8 can be discharged through the exhaust channel 18. The rebound force of the first spring 20 can be set according to requirements and is not limited here.

[0035] The materials of both the exhalation moving block 19 and the inhalation moving block 21 can be set according to requirements, and there are no restrictions here.

[0036] As can be seen from the above description, when using this application, expiratory and inspiratory training can be performed alternately to meet the needs of children's lung function rehabilitation training.

[0037] The top of the respirator body is equipped with a cartoon display screen 33, shaped like a cartoon character or animal to attract children. This application uses highly recognizable visual elements to reduce children's unfamiliarity and psychological resistance to medical equipment. The cartoon display screen 33 has a power switch 34 that controls its on / off state. It also includes built-in animation resources suitable for children's pulmonary function rehabilitation, enhancing children's participation through high-contrast and engaging visual feedback. A high-precision sensor is built into the ventilation duct to monitor airflow and direction, uploading the data to a controller. The controller determines the child's current breathing status based on the data and activates the cartoon display screen 33 to play corresponding animations during breathing exercises, increasing the user experience. The cartoon display screen 33 has a built-in power supply, powered directly via a USB-C or DC power interface.

[0038] In summary: Before using this pediatric pulmonary function rehabilitation ventilator, the user snaps the connecting sleeve 16 into the connecting connector 10 to connect the ventilation tube to the ventilator body. During use, the child undergoing pulmonary function rehabilitation training bites down on the mouthpiece 4, ensuring the sealing ring 5 fits tightly against their lips, forming an effective airtight barrier and enhancing the effectiveness and stability of the breathing training. During exhalation training, the exhaled air compresses the valve block 17 and valve plate 23 through the ventilation tube and main flow channel 15. Under this compressive force, the valve plate 23 fits tightly against the valve body 31, while the inhalation one-way valve remains closed. Under the compressive force, the valve block 17 moves away from the connecting channel 26 until the connecting channel 26 and the exhalation channel 25 are aligned. In the connected state, during the movement of valve block 17, the end of valve block 17 away from the main flow channel 15 gradually moves into the exhaust channel 18. When the connecting channel 26 and the exhalation channel 25 are connected, the end of valve block 17 away from the main flow channel 15 blocks the exhaust channel 18. At this time, the connecting channel 26 and the exhalation channel 25 are connected. The child's exhaled air enters the inner cavity of the second sealing cover 8 through the ventilation pipe, main flow channel 15, connecting channel 26, and exhalation channel 25. Exhalation pushes the exhalation moving block 19 upward, and the child achieves exhalation training. When the child stops exhaling, under the action of the rebound force of the first spring 20, valve block 17 moves in the opposite direction until valve block 17 returns to its original position. At this time, valve block 17 blocks the connecting channel 26, while the exhaust channel 18 and the exhalation channel 25 are connected. When the exhalation moving block 19 moves downward under the action of gravity, excess gas in the second sealing cover 8 is discharged through the exhalation channel 25 and the exhaust channel 18. Figure 3 As shown.

[0039] When children are practicing breathing. Figure 3 Air from the left side chamber enters the child's lungs through the inhalation channel 24, the main flow channel 15, and the ventilation tube. At this time, the left side chamber is under negative pressure, and the pressure in the right side chamber is higher than that in the left side chamber. Under atmospheric pressure, the valve plate 23 can move to the left until the first connection port 32 and the exhaust port 28 are aligned. At this time, the second connection port 27 and the supplementary air port 29 are misaligned. At this time, the inner cavity of the first sealing cover 7 is connected to the inner cavity of the inhalation channel 24 through the first connection port 32, the exhaust port 28, the left side chamber, and the first connection channel 24. When the child continues to inhale, the air in the first sealing cover 7 can enter the child's lungs through the inhalation channel 24, the main flow channel 15, and the ventilation tube. Children undergoing pulmonary function rehabilitation training can perform inhalation training. When the first sealing cover 7 is under negative pressure, external gas enters the first sealing cover 7 through the intake channel 9. The external gas can compress the inhalation moving block 21, causing the inhalation moving block 21 to move upward.

[0040] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional technical means such as bolt connection in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. The materials of each component can be selected according to the requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A child lung function rehabilitation respirator comprising a ventilation pipeline and a respirator body, characterized in that: The respirator body includes a base (6), a main channel (15) is provided in the middle of the base (6), and a connecting connector (10) is provided on the outside of the main channel (15). The outlet end of the ventilation pipe is adapted to the connecting connector (10). An inhalation training component and an exhalation training component are provided on the top of the base (6). The inhalation training component includes a first sealing cover (7). An inhalation moving block (21) is movably connected to the inner cavity of the first sealing cover (7). An inhalation one-way valve is provided on the top of the inner cavity of the first sealing cover (7). The outlet end of the inhalation one-way valve is connected to the main channel (15) through an inhalation channel (24). An air inlet channel (9) is provided in the middle of the bottom of the first sealing cover (7). The exhalation training component includes a second sealing cover (8). An exhalation moving block (19) is movably connected to the inner cavity of the sealing cover (8). An exhalation channel (25) is provided in the middle of the bottom of the second sealing cover (8). An exhaust channel (18) is provided on the side of the bottom of the exhalation channel (25) away from the main channel (15). The side of the bottom of the exhalation channel (25) close to the main channel (15) is connected to the main channel (15) through a connecting channel (26). A valve block (17) that is adapted to both the exhaust channel (18) and the connecting channel (26) is movably connected to the bottom of the inner cavity of the exhalation channel (25). The valve block (17) is connected to the base (6) through a first spring (20). A cartoon display screen (33) is provided on the top of the respirator body. The shape of the cartoon display screen (33) is a cartoon character or animal shape that attracts children.

2. A respiratory device for pulmonary rehabilitation of children as claimed in claim 1 wherein: The ventilation duct is a multi-segment structure design, including a connecting segment (1) and a telescopic segment (3). One end of the connecting segment (1) is provided with a mouthpiece (4) adapted to the child's mouth. The other end of the connecting segment (1) is connected to the telescopic segment (3) through a filter. The end of the telescopic segment (3) away from the filter is detachably connected to the connecting joint (10). The filter includes several housings (2). The bottom end of the housing (2) is provided with an air inlet. The top end of the housing (2) is provided with an air outlet. The bottom of the inner cavity of the housing (2) is detachably connected to a fixing block (11). The top of the fixing block (11) away from the air inlet of the housing (2) is detachably connected to a droplet interception block (12).

3. A respiratory device for pulmonary rehabilitation of children as claimed in claim 2 wherein: The air inlet and outlet of the housing (2) are both located on the same side of the droplet interception block (12).

4. The respiratory device for pulmonary rehabilitation of children according to claim 2, characterized in that: A sealing ring (5) is fitted on the outer ring of one end of the connecting section (1).

5. The respiratory device for pulmonary rehabilitation of children according to claim 1, characterized in that: The exhaust channel (18), connecting channel (26) and exhalation channel (25) form an inverted T-shaped airflow channel. The lower end of the valve block (17) is located in the horizontal end of the inverted T-shaped airflow channel, and the upper end of the valve block (17) is located in the vertical end of the inverted T-shaped airflow channel. The distance between the exhaust channel (18) and the connecting channel (26) is the same as the length of the lower end of the valve block (17).

6. The respiratory device for pulmonary rehabilitation of children according to claim 1, characterized in that: The intake one-way valve includes a valve body (31) embedded in the top of the inner cavity of the first sealing cover (7). The bottom of the valve body (31) is provided with an exhaust port (28) and a replenishment port (29). A replenishment channel (30) is provided on the side of the valve body (31) away from the second sealing cover (8), and an outlet end is provided on the side of the valve body (31) near the second sealing cover (8). A valve plate (23) is movably connected to the inner cavity of the valve body (31). The valve plate (23) is connected to the valve body (31) via a second spring (22), and the… The bottom of the valve plate (23) is provided with a first connection port (32) and a second connection port (27). When the first connection port (32) and the exhaust port (28) are misaligned, the second connection port (27) and the air supply port (29) are aligned. The air supply port (29) and the air supply channel (30) are connected through the second connection port (27). When the first connection port (32) and the exhaust port (28) are aligned, the second connection port (27) and the air supply port (29) are misaligned.

Images