Lung function rehabilitation training instrument

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a lung function rehabilitation training instrument which comprises a variable cross-section tube body, a sealing part provided with an air inlet end with a small caliber and an air outlet end with a large caliber and matched with the inner wall of the variable cross-section tube body, and an elastic element arranged between the air outlet end and the sealing part and used for providing resistance force for the sealing part. The sealing part can move in the length direction of the variable-section pipe body under the action of airflow at the air inlet end, so that a gradually-changed air channel allowing air to pass through is formed between the outer edge of the sealing part and the inner wall of the variable-section pipe body, and the adjusting assembly is movably arranged at the air outlet end and used for adjusting the pre-compression force of the elastic element. And the width of the gradually-changed air passage is monotonically increased along with the increase of the displacement of the sealing element. According to the lung function rehabilitation training instrument, the design of the integrated flat-cone-shaped variable-cross-section breathing tube is adopted, an adjustable spring impedance mechanism is combined, and the effects of simple structure, no-dead-corner cleaning, rapid impedance adjustment and high portability are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a lung function rehabilitation training instrument. BACKGROUND

[0002] Lung function rehabilitation training is an important means to improve the respiratory function of patients. By making patients perform exhalation resistance training (such as blowing action), the respiratory muscles are physically exercised to increase lung capacity and oxygen intake.

[0003] For example, the patent with the authorization announcement number CN215310070U discloses a lung function rehabilitation training device for respiratory medicine, which includes a sleeve, a top cover, a top rod, a supporting rod, a hanging rod, a weight disc and other components. The weight adjustment and disassembly and cleaning are achieved through threaded connection and movable sleeve connection. However, the internal structure (such as the folding telescopic sleeve, the female adapter sleeve, the male adapter column, etc.) has dead angles, which are prone to bacterial growth. The disassembly steps are complicated (multiple threaded components need to be twisted), the cleaning is not thorough, the risk of respiratory tract infection is increased, the resistance is adjusted by adding or removing weights on the weight disc, the adjustment process needs to be manually added or removed, the rehabilitation progress of the patient cannot be quickly responded, the efficiency is low, and the impedance adjustment is inconvenient. The sleeve design has a large volume and contains metal components (such as the weight disc), which is not portable and is difficult to meet the needs of mobile or home use.

[0004] Therefore, there is an urgent need for a lung function rehabilitation training device with simplified structure, easy cleaning, fast impedance adjustment and portability. SUMMARY

[0005] In order to solve the problems of complex structure, difficult cleaning, inconvenient impedance adjustment and poor portability of the existing device, the present application provides a lung function rehabilitation training instrument, which adopts an integrated flat-cone variable cross-section breathing tube design and combines an adjustable spring impedance mechanism to realize a simple structure, no dead angle cleaning, fast impedance adjustment and high portability.

[0006] The present application provides a lung function rehabilitation training instrument, which comprises a variable cross-section tube body having a smaller caliber inlet end and a larger caliber outlet end, a sealing element adapted to the inner wall of the variable cross-section tube body, and an elastic element arranged between the outlet end and the sealing element for providing impedance force to the sealing element, The sealing element can be displaced along the length direction of the variable cross-section tube body under the action of the gas flow at the inlet end, so that a gradually changing air passage is formed between the outer edge of the sealing element and the inner wall of the variable cross-section tube body.

[0007] The elastic element provides impedance force to the sealing element, the gradually changing air passage changes with the blowing intensity, the natural respiratory resistance is simulated, the training safety is improved, the variable cross-section tube body is designed to be lightweight and compact, and is easy to carry and store.

[0008] Further, the adjusting assembly is movably arranged at the air outlet end for adjusting the pre-compression force of the elastic element, so that the difficulty and intensity of the training can be easily adjusted by the adjusting assembly for the patients in the early rehabilitation stage or the people in need of high-intensity training, thereby improving the training effect and promoting the effective rehabilitation of the lung function.

[0009] Further, the air inlet end of the variable cross-section tube body is a round port, the air outlet end is an oval port, a connecting line between the round port and the oval port forms the tube wall of the variable cross-section tube body, and the sealing element is matched with the inner wall of the tube. The air inlet end of the round port can better concentrate the airflow, so that the gas enters the inside of the tube body in a relatively stable state, and the air outlet end of the oval port can make the airflow more dispersed and uniform when the gas is discharged, thereby simulating a state closer to natural breathing.

[0010] Further, the sealing element is an oval gasket, the short axis of the gasket is consistent with the short axis of the oval port, and the diameter of the round port is consistent with the short axis of the oval port. The patient blows air from the air inlet end, the airflow pushes the gasket to move towards the air outlet end, the long axis of the gasket gradually separates from the inner wall of the tube body when the gasket moves, so that the airway width becomes larger and larger, the airflow is uniformly discharged through the airway, and the spring exerts a reverse resistance force on the gasket, so that the patient needs to overcome the resistance to perform the blowing training, thereby exercising the respiratory muscle.

[0011] Further, the width of the gradually changing airway monotonically increases with the displacement amount of the sealing element. During the rehabilitation training, the respiratory muscle strength of the patient gradually increases as the training progresses, and the width of the gradually changing airway monotonically increases with the displacement amount of the sealing element, so that the gradually changing airway can well adapt to the change of the respiratory muscle strength of the patient.

[0012] Further, the air outlet end of the variable cross-section tube body is provided with a cover plate, a through hole is formed in the cover plate, the adjusting assembly includes an adjusting rod, the sealing element and the elastic element are sleeved on the adjusting rod, and the adjusting rod penetrates through the cover plate. The initial compression force of the spring is directly adjusted by the extension length of the adjusting rod, for example, the extension length of the adjusting rod in the tube body is increased to reduce the spring force when the muscle strength of the patient in the early rehabilitation stage is weak, and the extension length of the adjusting rod in the tube body is reduced to increase the spring force when the muscle strength is increased in the later rehabilitation stage.

[0013] Further, the adjusting rod includes a guide section away from the air outlet end and an adjusting section close to the air outlet end, the adjusting section is fixed on the cover plate through a nut, and an external thread matched with the nut is arranged on the outside of the adjusting section. The adjusting process is fast, and only the screw needs to be rotated without disassembling the parts.

[0014] Further, the cover plate is connected with the variable cross-section pipe body by buckling, the variable cross-section pipe body is provided with a convex ring at the end, the cover plate is symmetrically provided with buckling lugs matched with the convex ring at the periphery, and the cover plate is further provided with a convex plug extending into the variable cross-section pipe body. The cover plate and the variable cross-section pipe body can be connected by hand, and the connection is stable. When the patient is performing lung function rehabilitation training, the airflow impact generated by breathing cannot easily loosen the cover plate, ensuring the normal operation of the training instrument. Meanwhile, the convex plug extending into the variable cross-section pipe body on the cover plate plays a good sealing role, which can prevent gas from leaking from the connection between the cover plate and the variable cross-section pipe body, so that the gas can flow along the predetermined path during the training process, improving the effect of rehabilitation training.

[0015] Further, the cover plate is connected with the variable cross-section pipe body by buckling, the variable cross-section pipe body is provided with a convex ring at the end, the cover plate is symmetrically provided with buckling lugs matched with the convex ring at the periphery, and the cover plate is further provided with a convex plug extending into the variable cross-section pipe body. The cover plate and the variable cross-section pipe body can be connected by hand, and the connection is stable. When the patient is performing lung function rehabilitation training, the airflow impact generated by breathing cannot easily loosen the cover plate, ensuring the normal operation of the training instrument. Meanwhile, the convex plug extending into the variable cross-section pipe body on the cover plate plays a good sealing role, which can prevent gas from leaking from the connection between the cover plate and the variable cross-section pipe body, so that the gas can flow along the predetermined path during the training process, improving the effect of rehabilitation training.

[0016] Further, the variable cross-section pipe body is provided with a breathing flat mouth or a breathing mask at the gas inlet end. The breathing flat mouth and the breathing mask can be flexibly selected according to the use habit and actual demand of the patient. For some patients who are used to using the breathing flat mouth, the breathing flat mouth is small and light, and is convenient for being held in the mouth for breathing training, and can more accurately control the in and out of the breathing airflow. The breathing mask is more suitable for patients who feel uncomfortable using the breathing flat mouth or have a large breathing amplitude. The breathing mask can cover the mouth and nose, provide a wider breathing space, and make the patient more natural and relaxed during the breathing process. Meanwhile, the breathing mask can also reduce the oral fatigue that may be caused by holding the breathing flat mouth for a long time.

[0017] The present application has the following advantages: The present application provides a lung function rehabilitation training instrument. The variable cross-section breathing pipe is a single conical cavity, the inner wall is smooth, there are no complex components, and the cleaning dead angle is reduced. The gasket, spring and screw rod can be quickly disassembled, and the screw rod can be removed by being screwed out, which is convenient for thorough cleaning and disinfection and reduces the risk of infection. The spring compression force is directly adjusted by the screwing depth of the screw rod, the impedance is continuously and instantaneously adjusted, the change of the patient's rehabilitation progress is adapted, and the training efficiency is improved. The overall design is lightweight, the structure is compact, and the training instrument is easy to carry and store. The cooperation of the elliptical cross-section and the gasket ensures uniform distribution of airflow, the gradually changing airway changes with the blowing strength, the natural breathing resistance is simulated, and the training safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the technical solutions in the embodiment or prior art of the present application clearer, the drawings needed in the description of the embodiment or prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. Figure 1 is a first angle view of the outside of the pipe body; Figure 2 is a second angle view of the outside of the pipe body; Figure 3 is a first angle view of the inside of the pipe body; Figure 4 is a second angle view of the inside of the pipe body; Figure 5 is a whole view of the training instrument; Figure 6 is a first angle exploded view of Figure 5 ; Figure 7 is a second angle exploded view of Figure 5 ; Figure 8 is a change view of the tapering airway; Figure 9 is a view of the breathing mask; Figure 1. Variable cross-section pipe body, 11. Inlet end, 12. Outlet end, 13. Convex ring, 2. Sealing element, 3. Elastic element, 4. Tapering airway, 5. Adjusting assembly, 51. Adjusting rod, 52. Nut, 6. Cover plate, 61. Plug, 62. Buckle ear, 7. Rear shell, 8. Breathing nozzle, 9. Breathing mask. EMBODIMENT

[0019] The technical solutions of the present application will be described below in connection with the drawings. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments.

[0020] In order to make the lung function rehabilitation training device have the characteristics of simple structure, easy cleaning and rapid impedance adjustment, a lung function rehabilitation training instrument, such as Figure 1 and 2As shown, the device includes a variable cross-section tube 1, a sealing element 2, and an elastic element 3. The variable cross-section tube 1 has a smaller inlet end 11 and a larger outlet end 12. The variable cross-section tube 1 is transparent and has scales on it, making it easy to visually observe the amount of movement of the sealing element 2 within the tube. The sealing element 2 is adapted to the inner wall of the variable cross-section tube 1. The elastic element 3 is disposed between the outlet end 12 and the sealing element 2 to provide resistance to the sealing element 2. The elastic element 3 is a spring. Under the action of the airflow at the inlet end 11, the sealing element 2 can be displaced along the length direction of the variable cross-section tube 1, so that a gradually changing air passage 4 is formed between the outer edge of the sealing element 2 and the inner wall of the variable cross-section tube 1, allowing gas to pass through.

[0021] Initial state: The outer edge of the seal 2 fits into the inner wall of the variable cross-section tube 1, sealing the tube and isolating the spaces on both sides of the seal 2. Training process: The patient blows air from the smaller diameter inlet end 11. The airflow pushes the seal 2 towards the larger diameter outlet end 12. As the seal 2 moves, its outer edge gradually separates from the inner wall of the tube, forming an airway. The size of the airway increases with the displacement of the seal 2. The airflow is discharged through the gradual airway 4. The elastic element 3 applies a reverse resistance force to the seal 2. The patient needs to overcome this resistance to perform blowing training, thereby exercising the respiratory muscles. The variable cross-section tube 1 is a single conical cavity with a smooth inner wall and no complex parts, reducing cleaning dead spots. The gasket, spring, and screw can be quickly disassembled (screw out the screw to remove), facilitating thorough cleaning and disinfection and reducing the risk of infection. The overall lightweight design (medical-grade plastic can be used) and compact variable cross-section structure make it easy to carry and store. The elliptical cross-section and gasket design ensure uniform airflow distribution. The gradual airway 4 adapts to the blowing intensity, simulating natural breathing resistance and improving training safety.

[0022] like Figure 3 and 4 As shown, to adjust the resistance to adapt to changes in the patient's rehabilitation progress, an adjustment component 5 is also included, movably mounted at the air outlet 12, for adjusting the pre-compression force of the elastic element 3. Depending on the patient's rehabilitation level, the resistance is adjusted by rotating the screw. For example, in the early stages of rehabilitation, screwing the screw in extends the spring, reducing the spring force. The patient breathes through the mouthpiece 8, and the airflow pushes the pad to move, overcoming the spring resistance. The greater the blowing intensity, the greater the pad displacement, the wider the gradual airway 4, and the increased airflow. After training, the screw is unscrewed, and the pad and spring are removed and thoroughly cleaned with disinfectant, ensuring no dead corners. When the patient blows air, pushing the pad towards the air outlet 12, the spring is further compressed. According to Hooke's Law (F=kx), the spring resistance increases linearly with the amount of compression.

[0023] The air inlet end 11 of the variable cross-section tube body 1 is a round port, and the air outlet end 12 is an oval port, and the connecting line between the round port and the oval port constitutes the tube wall of the variable cross-section tube body 1, and the sealing element 2 is matched with the inner wall of the tube. The sealing element 2 is an oval gasket, the short axis of the gasket is consistent with the short axis of the oval port, and the diameter of the round port is consistent with the short axis of the oval port. The gradual air passage 4 is formed between the long axis of the oval gasket and the tube wall, and the width of the air passage is expanded. Although the flow area is increased, the local resistance of the airflow is reduced, but the spring resistance is increased, and the overall impedance is dominated, and the gasket is stable at the position balanced by the spring resistance and the airflow thrust. The patient needs to continuously increase the blowing strength to further move the gasket.

[0024] As shown in Figure 8 , the width of the gradual air passage 4 monotonically increases with the displacement of the sealing element 2. Progressive resistance training: In the early rehabilitation stage, the patient's blowing strength is weak, the displacement of the gasket is small, the air passage is narrow, and the training is started with lower resistance; as the patient's muscle strength increases, the gasket can be displaced by a larger displacement, at which time the spring resistance increases significantly, forcing the respiratory muscles to output higher power; simulate natural respiratory load: the positive feedback mechanism of spring resistance and blowing strength meets the needs of synchronous training of respiratory muscle "intensity-endurance". Although the width of the air passage is expanded, the speed of the exhaust airflow is reduced due to the expansion of the cross section (Bernoulli's principle), which partially offsets the influence of the increased flow area, and the patient needs to overcome two kinds of resistance: spring mechanical resistance (main contribution) and airflow viscous resistance (secondary contribution, related to airway size). The decrease in airflow resistance brought by the expansion of the airway is dominated by the increase in spring resistance, so the patient needs to maintain blowing pressure > spring resistance to maintain airflow and ensure continuous and effective training. The dynamic incremental characteristic of spring resistance meets the principle of progressive overload, and the spring resistance continuously increases with displacement, forcing the patient to output stronger blowing force, realizing progressive resistance training, and more in line with the physiological needs of respiratory muscle training.

[0025] As shown in Figure 6 and 7 , the air outlet end 12 of the variable cross-section tube body 1 is provided with a cover plate 6, the cover plate 6 is provided with a through hole, the adjusting assembly 5 includes an adjusting rod 51, the sealing element 2 and the elastic element 3 are sleeved on the adjusting rod 51, and the adjusting rod 51 penetrates through the cover plate 6. The adjusting rod 51 includes a guide section away from the air outlet end 12 and an adjusting section close to the air outlet end 12, the adjusting section is fixed on the cover plate 6 through a nut 52, and the adjusting section is externally provided with an external thread matched with the nut 52.

[0026] When the patient performs blowing training, the exhaled gas enters the variable cross-section tube body 1, pushes the sealing element 2 to move along the guide section of the adjusting rod 51 to the cover plate 6, and in this process, the elastic element 3 is compressed, and the generated elastic force is the required resistance for training. With the increase of the blowing strength of the patient, the displacement of the sealing element 2 increases, and the compression amount of the elastic element 3 also increases, and the spring resistance increases significantly, thereby realizing progressive resistance training.

[0027] By rotating the nut 52, the position of the adjusting rod 51 on the cover plate 6 can be adjusted, thereby changing the initial compression amount of the elastic element 3. The change in the initial compression amount means the adjustment of the initial training resistance. Medical personnel can set a suitable initial training resistance for the patient according to the specific rehabilitation condition of the patient, so that the training is more personalized and precise. In addition, the setting of the adjusting rod 51 can also ensure the stability of the movement track of the sealing element 2 and the elastic element 3, avoid shaking or deviation during training, and ensure the stability and effectiveness of the training.

[0028] Resistance adjustment: By rotating the adjusting section to change the extension length of the adjusting rod 51, the initial compression force of the spring is directly adjusted. For example, in the early stage of rehabilitation, the muscle strength of the patient is weak, and the screw rod is rotated in to reduce the pre-compression force of the spring; in the later stage of rehabilitation, the muscle strength is enhanced, and the screw rod is rotated out to increase the pre-compression force, the adjustment process is fast, only the screw rod needs to be rotated, without the need to disassemble the parts. By adjusting the depth of the screw rod, the spring compression force is directly adjusted, the resistance is continuously and instantaneously adjusted, the changes in the rehabilitation progress of the patient are adapted, and the training efficiency is improved.

[0029] The cover plate 6 is connected with the variable cross-section pipe body 1 by a buckling method, the variable cross-section pipe body 1 is provided with a convex ring 13 at the end, the cover plate 6 is symmetrically provided with buckling ears 62 matched with the convex ring 13 at the periphery, and the cover plate 6 is further provided with a convex plug 61 extending into the variable cross-section pipe body 1. The buckling method makes the installation and disassembly of the cover plate 6 and the variable cross-section pipe body 1 very convenient. When installing, only the buckling ears 62 on the cover plate 6 are aligned with the convex ring 13 at the end of the variable cross-section pipe body 1, and then a certain pressure is applied, the buckling ears 62 will tightly buckle the convex ring 13, and at the same time the convex plug 61 extends into the variable cross-section pipe body 1, playing a further sealing and fixing role. When it is necessary to clean or maintain the inside of the variable cross-section pipe body 1, the cover plate 6 can also be easily disassembled from the variable cross-section pipe body 1.

[0030] As shown in Figure 5 The cover plate 6 is provided with a rear shell 7 outside, a cavity for gas condensation is formed between the rear shell 7 and the cover plate 6, and a through hole is formed in the rear shell 7. The exhaled gas of the patient condenses and accumulates in the rear shell 7, which is convenient for centralized cleaning.

[0031] As shown in Figures 5-7 The air inlet end 11 of the variable cross-section pipe body 1 is provided with a breathing flat mouth 8, which is small and light, and is convenient for breathing training by holding in the mouth, and can more accurately control the in and out of the breathing air flow.

[0032] As shown in Figure 9 The air inlet end 11 of the variable cross-section pipe body 1 is provided with a breathing mask 9, which can cover the mouth and nose, provide a wider breathing space, make the patient more natural and relaxed during breathing, and also reduce the possible oral fatigue caused by holding the breathing flat mouth 8 for a long time.

[0033] The above description is only illustrative and is not restrictive of the present application and modifications will occur to those skilled in the art upon reading the foregoing description. It is therefore intended that the scope of the present application be determined by the appended claims and their equivalents rather than by the description above.

Claims

1. A lung function rehabilitation training instrument, characterized in that: The utility model relates to a variable cross-section pipe body (1) with a smaller caliber inlet end (11) and a larger caliber outlet end (12), a sealing element (2) adapted to the inner wall of the variable cross-section pipe body (1), and a resilient element (3) arranged between the outlet end (12) and the sealing element (2) for providing a resistance force to the sealing element (2), wherein the sealing element (2) is displaced along the length direction of the variable cross-section pipe body (1) under the action of the gas flow at the inlet end (11) to form a gradually changing gas passage (4) between the outer edge of the sealing element (2) and the inner wall of the variable cross-section pipe body (1). Further comprising an adjusting assembly (5) movably arranged at the outlet end (12) for adjusting the pre-compression force of the resilient element (3).

2. The lung function rehabilitation training instrument according to claim 1, characterized in that: The inlet end (11) of the variable cross-section pipe body (1) is a round port, the outlet end (12) is an oval port, and the connecting line between the round port and the oval port constitutes the pipe wall of the variable cross-section pipe body (1), and the sealing element (2) is adapted to the inner wall of the pipe.

3. The lung function rehabilitation training instrument according to claim 1, characterized in that: The sealing element (2) is an oval gasket, the minor axis of the gasket is consistent with the minor axis of the oval port, and the diameter of the round port is consistent with the minor axis of the oval port.

4. The lung function rehabilitation training instrument according to claim 3, characterized in that: The width of the gradually changing gas passage (4) monotonously increases with the displacement amount of the sealing element (2).

5. The lung function rehabilitation training instrument according to claim 4, characterized in that: The outlet end (12) of the variable cross-section pipe body (1) is provided with a cover plate (6), the cover plate (6) is provided with a through hole, the adjusting assembly (5) comprises an adjusting rod (51), the sealing element (2) and the resilient element (3) are sleeved on the adjusting rod (51), and the adjusting rod (51) penetrates through the cover plate (6).

6. The lung function rehabilitation training instrument according to claim 2, characterized in that: The adjusting rod (51) comprises a guide section away from the outlet end (12) and an adjusting section close to the outlet end (12), the adjusting section is fixed on the cover plate (6) through a nut (52), and the outer portion of the adjusting section is provided with an outer thread matched with the nut (52).

7. The lung function rehabilitation training instrument according to claim 6, characterized in that: The cover plate (6) is connected with the variable cross-section pipe body (1) in a buckling mode, the end portion of the variable cross-section pipe body (1) is provided with a convex ring (13), the periphery of the cover plate (6) is symmetrically provided with a buckling lug (62) matched with the convex ring (13), and the cover plate (6) is further provided with a convex plug (61) extending into the variable cross-section pipe body (1).

8. The lung function rehabilitation training instrument according to claim 6, characterized in that: The cover plate (6) is provided with a rear shell (7) outside, a cavity for gas condensation is formed between the rear shell (7) and the cover plate (6), and the rear shell (7) is provided with a through hole.

9. The lung function rehabilitation training instrument according to claim 6, characterized in that: The inlet end (11) of the variable cross-section pipe body (1) is provided with a breathing flat nozzle (8) or a breathing mask (9).

10. The lung function rehabilitation training instrument according to claim 1, characterized in that: ​

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