Respiratory training device and using method thereof

Abstract

The invention discloses a respiratory training device and a using method thereof.The respiratory training device comprises a cylinder body, an air tap and a spherical air bag, the air tap and the spherical air bag are connected to the head end and the tail end of the cylinder body respectively, a splicing pipe is detachably connected between the cylinder body and the air tap, the lower end of the spherical air bag is fixedly connected with an upper connecting nozzle, and a lower connecting nozzle is fixed to the tail end of the cylinder body in a penetrating mode; the lower connecting nozzle is located below the upper connecting nozzle and tightly attached to the upper connecting nozzle, and a circle of first annular groove is formed in the lower end of the upper connecting nozzle. A traditional mode that a spherical air bag and a cylinder body are bonded and fixed through an adhesive is improved into a mode that the spherical air bag and the cylinder body are connected through an upper connecting nozzle and a lower connecting nozzle below the spherical air bag, and dual stability of interference fit and magnetic attraction connection is adopted, so that disassembly is convenient, the sealing performance is guaranteed, the spherical air bag is convenient to replace, and the service life of the cylinder body is prolonged. Moreover, the splicing pipes are replaced by adopting dual stability of interference fit and magnetic suction connection, so that the splicing pipes can be increased or decreased according to requirements, and the length of the respiratory training device can be conveniently adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a breathing training device and a method for using the same. Background Art

[0002] Breathing training is one of the most important treatments for many patients with respiratory diseases. Regular breathing training can help improve lung function, increase breathing efficiency, and strengthen respiratory muscles. Traditional breathing training devices usually consist of a cylinder and a spherical air bag connected to it. The patient inhales and exhales to expand and contract the spherical air bag to achieve the purpose of training.

[0003] However, the existing breathing training device has some shortcomings, mainly including the following aspects:

[0004] The connection is not firm and it is not easy to replace: The spherical airbag in the traditional device is usually connected to the cylinder body by adhesive or other fixing methods. This connection method is often not firm enough and is prone to leakage during use, affecting the training effect. In addition, once the spherical airbag is damaged, it is also troublesome to replace it.

[0005] Flow rate is not adjustable: Most traditional devices cannot accurately adjust the air flow through the cylinder, which limits the flexibility and effectiveness of training. For patients with different conditions and training needs, a fixed flow rate may not meet their personalized needs.

[0006] Non-adjustable length: The length of traditional devices is usually fixed, which is not very friendly to users with different body shapes or training requirements. Especially for the same device used by children and adults, the non-adjustability of the length limits its scope of application.

[0007] Lack of quantitative feedback: There is a lack of quantitative feedback mechanism for training effects, and it is difficult for patients to make appropriate adjustments based on their own training progress.

[0008] In order to solve the above technical problems, the present invention aims to provide a more efficient, convenient and personalized breathing training device, a breathing training device and a method of using the same, so as to help users perform breathing training better. Summary of the invention

[0009] The purpose of the present invention is to overcome the defects of the prior art, provide a breathing training device, and provide a method for using the breathing training device to solve the problems raised in the above background technology.

[0010] A breathing training device comprises a cylinder body, an air nozzle and a spherical air bag respectively connected to the two ends of the cylinder body, a flow regulating mechanism is installed outside the cylinder body, a splicing tube is detachably connected between the cylinder body and the air nozzle, an upper connecting nozzle is fixedly connected to the lower end of the spherical air bag, a lower connecting nozzle is fixed through the end of the cylinder body, the lower connecting nozzle is located below the upper connecting nozzle and is tightly attached to the upper connecting nozzle, a circle of first annular groove is opened at the lower end of the upper connecting nozzle, a first rubber ring is fixed to the upper end of the lower connecting nozzle, the first rubber ring is inserted into the first annular groove and has an interference fit with the first annular groove, first magnetic rings are fixed to the outer side of the lower end of the upper connecting nozzle and the outer side of the upper end of the lower connecting nozzle, the first magnetic ring is located outside the first rubber ring and the first annular groove, and the first magnetic rings attract each other.

[0011] Furthermore, a second rubber ring is fixed to the left end of the spliced ​​tube and the left end of the air nozzle, a second annular groove is formed at the right end of the spliced ​​tube and the first end of the cylinder body, the second rubber ring is inserted into the second annular groove and has an interference fit with the second annular groove, and second magnetic rings are fixed to the outer sides of the left and right ends of the spliced ​​tube, the outer side of the left end of the air nozzle and the outer side of the first end of the cylinder body, the second magnetic ring is located on the outside of the second rubber ring and the second annular groove, and the second magnetic rings attract each other.

[0012] Furthermore, the flow regulating mechanism includes a valve body, a valve plate, a top box, a vertical shaft, a worm gear, a horizontal shaft, and a worm; the valve body and the cylinder body are an integral structure, and the valve plate is rotatably connected to the inside of the valve body.

[0013] Furthermore, the top box is fixed to the upper end of the valve body, the vertical shaft is rotatably connected to the inside of the top box, the lower part of the vertical shaft penetrates into the inside of the valve body, and the lower part of the vertical shaft is fixed to the valve plate.

[0014] Furthermore, the worm wheel is fixed outside the vertical shaft, the worm transmission is connected to the left part of the worm wheel, the horizontal axis is fixed at the center of the worm, the front part of the horizontal axis passes through the top box, and a knob is fixed to the front part of the horizontal axis.

[0015] Furthermore, the upper end of the vertical shaft movably passes through the top box, a turntable is fixed to the upper end of the vertical shaft, and pointing rods are fixed to opposite ends of the turntable surface, and the pointing rods correspond to the two ends of the valve plate.

[0016] A method for using a breathing training device comprises the following steps:

[0017] Preparation

[0018] Install the spherical airbag onto the cylinder body, ensure that the first rubber ring is inserted into the first annular groove and achieves an interference fit, and at the same time, the first magnetic rings attract each other;

[0019] Choose whether to install the splicing tube according to your needs. If you need to increase the length of the cylinder body, align the second rubber ring of the splicing tube with the second annular groove of the cylinder body to achieve interference fit, and ensure that the second magnetic rings attract each other;

[0020] Flow regulation stage

[0021] Turn the knob on the top box to adjust the position of the valve plate in the flow regulating mechanism to change the air flow through the valve body;

[0022] Observe the position of the pointing rod on the turntable to determine the specific rotation angle of the valve plate;

[0023] Training phase

[0024] The patient exhales and inhales through the air nozzle, and the exhaled air passes through the cylinder and enters the spherical airbag, causing it to expand; when inhaling, the air in the spherical airbag returns to the cylinder, causing the spherical airbag to return to its original shape;

[0025] Adjust breathing rhythm and depth according to training needs and personal physical condition;

[0026] Monitoring and adjustment phase

[0027] Use numerical simulation methods to predict the changes in the spherical airbag under different flow settings;

[0028] Set the initial conditions: initial spherical airbag radius R0, flow rate Q, time step Δt;

[0029] The change of the spherical airbag radius with time is iteratively calculated using the numerical integration method;

[0030] Analyze the results and adjust the position of the valve sheet according to the changes of the spherical airbag to achieve the expected training effect;

[0031] Adjust the position of the valve plate in the flow regulating mechanism according to the simulation results to optimize the training effect;

[0032] Ending Phase

[0033] After completing the training, disassemble the splicing tube and spherical airbag as needed for cleaning and maintenance;

[0034] If the balloon needs to be replaced, repeat the steps in the preparation phase.

[0035] Furthermore, the monitoring and adjustment stage is to use a computer to predict the changes of the spherical airbag under different flow settings, specifically, including the steps of:

[0036] Step 1: Establish the relationship between the position of the valve plate and the flow through the valve body, expressed as:

[0037]

[0038] in:

[0039] Q is the flow rate through the valve body;

[0040] k is a coefficient that depends on the flow channel shape factor;

[0041] A is the effective area of ​​the valve opening;

[0042] ΔP is the pressure difference on both sides of the valve body;

[0043] ρ is the gas density.

[0044] The effective area A of the valve plate opening is calculated according to the rotation angle θ of the valve plate, and the formula is expressed as follows:

[0045]

[0046] Step 2: Establish the relationship between the volume of the spherical airbag and the time, expressed as follows:

[0047]

[0048] in:

[0049] V is the volume of the spherical airbag;

[0050] QThe flow rate through the valve body;

[0051] t is time;

[0052] The equation is solved by numerical integration method to obtain the change of the spherical airbag radius with time;

[0053] Step 3: Numerical simulation

[0054] Set initialization parameters:

[0055] Set the time step Δt;

[0056] Set the initial state R(0)=R0, where R0 is the initial radius;

[0057] Set the flow rate Q, which depends on the position θ of the valve plate;

[0058] Iterative updates:

[0059] For each time step Δt, a new radius R(t+Δt) is calculated using a numerical method.

[0060] Step 4: Calculation process

[0061] Set initial conditions:

[0062] Set the initial valve position θ;

[0063] Set the radius R0 of the initial spherical airbag.

[0064] Calculate flow:

[0065] Calculate the effective area A according to the valve plate position θ;

[0066] Calculate the flow rate Q using the given parameters.

[0067] Simulate the expansion process of a spherical airbag:

[0068] The change of the radius R of the spherical airbag with time is iteratively calculated using a numerical method;

[0069] The radius R of the spherical airbag is recorded after each time step;

[0070] Analysis results:

[0071] Analyze the changes of spherical airbag under different flow settings;

[0072] Adjust the position of the valve plate according to the results to achieve the desired training effect.

[0073] Beneficial effects of the present invention:

[0074] 1. Convenient and quick assembly and disassembly

[0075] Magnetic attraction and interference fit design: The spherical airbag and the cylinder body are connected by interference fit and magnetic attraction through the upper and lower connecting nozzles, making the assembly and disassembly of the device very simple while ensuring good air tightness.

[0076] Flexible configuration of splicing tubes: The splicing tubes also utilize interference fit and magnetic connection, which can easily adjust the overall length of the breathing training device according to different training needs.

[0077] 2. Accurate flow control

[0078] Design of the flow regulation mechanism: By adjusting the position of the valve, the air flow can be accurately controlled, thereby adjusting the intensity of breathing training.

[0079] Intuitive flow indication: The setting of the turntable and the pointing rod makes it easy for users to intuitively understand the rotation angle of the valve plate, so as to better control the flow.

[0080] 3. Visual simulation and training effects

[0081] Mathematical model and numerical simulation: By establishing a mathematical model of flow rate and spherical airbag changes and combining it with numerical simulation technology, it is possible to predict the changes in the spherical airbag under different flow rate settings, thereby helping doctors or patients adjust the training intensity as needed.

[0082] Precisely control the training effect: Based on the simulation results, users can adjust the position of the valve according to their personal training goals to achieve personalized breathing training.

[0083] 4. Improve user experience and scope of application

[0084] Enhanced adaptability: By increasing or decreasing the number of tubes, the training device can be adapted to users of different ages or health conditions.

[0085] Ease of operation: Simple assembly and disassembly methods lower the user's usage threshold and improve the practicality of the device.

[0086] In summary, this technical solution not only improves the flexibility and functionality of the breathing training device through innovative design, but also enables users to make personalized adjustments according to their own needs, thereby achieving more effective breathing training. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] Figure 1 It is an overall schematic diagram of the present invention;

[0088] Figure 2 This is a cross-sectional schematic diagram of a spliced ​​pipe of the present invention;

[0089] Figure 3 It is a cross-sectional schematic diagram of the flow regulating mechanism of the present invention;

[0090] Figure 4 This is a cross-sectional schematic diagram of the lower connecting nozzle and the upper connecting nozzle of the present invention being disassembled.

[0091] In the figure: 1-cylinder body, 11-lower connecting nozzle, 12-first rubber ring, 2-air nozzle, 3-joining pipe, 4-flow regulating mechanism, 41-valve body, 42-valve plate, 43-top box, 44-vertical axis, 45-worm gear, 46-horizontal axis, 47-worm, 48-turntable, 49-pointing rod, 5-spherical airbag, 51-upper connecting nozzle, 52-first annular groove, 6-second rubber ring, 7-second annular groove, 8-second magnetic ring, 9-first magnetic ring. DETAILED DESCRIPTION

[0092] See also Figure 1 , Figure 4A breathing training device comprises a cylinder body 1, an air nozzle 2 and a spherical air bag 5 respectively connected to the two ends of the cylinder body 1, a flow regulating mechanism 4 is installed outside the cylinder body 1, a splicing pipe 3 is detachably connected between the cylinder body 1 and the air nozzle 2, an upper connecting nozzle 51 is fixedly connected to the lower end of the spherical air bag 5, a lower connecting nozzle 11 is fixed through the end of the cylinder body 1, the lower connecting nozzle 11 is located below the upper connecting nozzle 51 and is tightly attached to the upper connecting nozzle 51, a first annular groove 52 is opened at the lower end of the upper connecting nozzle 51, a first rubber ring 12 is fixed to the upper end of the lower connecting nozzle 11, the first rubber ring 12 is inserted into the first annular groove 52 and is interference fit with the first annular groove 52, a first magnetic ring 9 is fixed to the outer side of the lower end of the upper connecting nozzle 51 and the outer side of the upper end of the lower connecting nozzle 11, the first magnetic ring 9 is located outside the first rubber ring 12 and the first annular groove 52, The first magnetic rings 9 are attracted to each other. When the spherical airbag 5 is installed on the cylinder body 1, the upper connecting nozzle 51 is matched with the lower connecting nozzle 11, and the first rubber ring 12 is inserted into the first annular groove 52 and has an interference fit with the first annular groove 52. At the same time, the first magnetic rings 9 are attracted to each other, and the installation of the spherical airbag 5 is completed. In this way, when performing breathing training, the exhaled air is input into the spherical airbag 5 through the cylinder body 1, so that the spherical airbag 5 swells, and when the patient inhales, the spherical airbag 5 will return to its original shape, so as to perform breathing training. In this way, the traditional spherical airbag 5 and the cylinder body 1 are bonded and fixed with an adhesive, and the spherical airbag 5 and the cylinder body 1 are improved to be connected through the upper connecting nozzle 51 under the spherical airbag 5 and the lower connecting nozzle 11 of the cylinder body 1, and the interference fit and magnetic connection are used for double stability. This is not only convenient for disassembly, but also has guaranteed sealing, so that the spherical airbag 5 can be replaced conveniently.

[0093] The main purpose of the splicing tube 3 is to meet the needs of different users. The application scenarios include:

[0094] Users of different age groups:

[0095] Children: For children, due to their smaller lung capacity, a shorter cylinder is needed to reduce breathing resistance and make it easier for them to perform breathing training.

[0096] Adults: Adults generally have larger lung volumes and therefore require longer cylinders to provide more resistance and help them perform more effective breathing exercises.

[0097] Users with different health conditions:

[0098] Beginners / Early Recovery: People who are new to breathing exercises or in the early stages of recovery need less resistance to avoid overexertion.

[0099] Advanced Trainers / Late Recovery: As breathing capacity improves, patients need greater resistance to challenge themselves and facilitate further recovery.

[0100] Personalized training needs:

[0101] Professional athletes: require customized training plans to adapt to high-intensity training needs.

[0102] Seniors: Lower resistance is needed to ensure safe training.

[0103] In the embodiment, various lengths of splicing pipes can be provided:

[0104] Several standard lengths of splicing pipes are provided according to different needs, such as short, medium and long specifications.

[0105] See also Figure 2 The left end of the splicing tube 3 and the left end of the air nozzle 2 are both fixed with a second rubber ring 6, the right end of the splicing tube 3 and the head end of the cylinder body 1 are both provided with a circle of second annular groove 7, the second rubber ring 6 is inserted into the second annular groove 7 and is interference fit with the second annular groove 7, the outer sides of the left and right ends of the splicing tube 3, the outer side of the left end of the air nozzle 2 and the outer side of the head end of the cylinder body 1 are all fixed with a second magnetic ring 8, the second magnetic ring 8 is located on the outer sides of the second rubber ring 6 and the second annular groove 7, and the second magnetic rings 8 are attracted to each other, and the setting of the splicing tube 3 can increase the length of the cylinder body 1 according to the needs of the user. When installing the splicing tube 3, the second rubber ring 6 of the splicing tube 3 is matched with the second annular groove 7 of the cylinder body 1, and the second annular groove 7 of the splicing tube 3 is plugged into and interference fit with the second rubber ring 6 of the air nozzle 2. When the splicing tube 3 is not installed, the second rubber ring 6 of the air nozzle 2 is directly plugged into and interference fit with the second annular groove 7 of the cylinder body 1. When disassembling, the splicing tube 3 can be pulled open with force. In this way, the replacement of the splicing tube 3 also adopts the dual stability of interference fit and magnetic connection. In this way, the splicing tube 3 can be increased or decreased according to needs, so as to facilitate the adjustment of the length of the breathing training device.

[0106] See also Figure 3The flow regulating mechanism 4 includes a valve body 41, a valve plate 42, a top box 43, a vertical shaft 44, a worm gear 45, a horizontal shaft 46, and a worm 47. The valve body 41 and the cylinder body 1 are an integral structure. The valve plate 42 is rotatably connected to the inside of the valve body 41. The top box 43 is fixed to the upper end of the valve body 41. The vertical shaft 44 is rotatably connected to the inside of the top box 43. The lower part of the vertical shaft 44 penetrates into the inside of the valve body 41. The lower part of the vertical shaft 44 is fixed to the valve plate 42. The worm gear 45 is fixed to the outside of the vertical shaft 44. The worm 47 is transmission-connected to the left side of the worm gear 45. The horizontal axis 46 is fixed at the center of the worm 47, the front part of the horizontal axis 46 passes through the top box 43, a knob is fixed at the front part of the horizontal axis 46, and the upper end of the vertical axis 44 movably passes through the top box 43. During breathing training, the knob is turned, and the knob drives the horizontal axis 46 to rotate, the horizontal axis 46 drives the worm 47 to rotate, the worm 47 drives the worm wheel 45 to rotate, the worm wheel 45 drives the vertical axis 44 to rotate, and the vertical axis 44 drives the valve plate 42 to rotate. The diameter of the valve plate 42 is equal to the inner diameter of the valve body 41. In this way, as the valve plate 42 rotates, the flow rate of air passing through the valve body 41 can be adjusted.

[0107] See also Figure 3 The upper end of the vertical shaft 44 movably passes through the top box 43, and a turntable 48 is fixed to the upper end of the vertical shaft 44. Pointing rods 49 are fixed to the opposite ends of the surface of the turntable 48. When the vertical shaft 44 rotates, it can also drive the turntable 48 to rotate, and the turntable 48 drives the pointing rod 49 to rotate. Because the pointing rod 49 corresponds to the two ends of the valve plate 42, it is convenient to judge the angle of rotating the valve plate 42, so as to make it more convenient to adjust the flow rate.

[0108] In the embodiment, all parts that directly contact the human body (such as the air nozzle 2, the spherical airbag 5, the upper connecting nozzle 51, the lower connecting nozzle 11, the second rubber ring 6, etc.) should be made of medical grade silicone or medical grade plastic. These materials are non-toxic, odorless, and will not cause skin allergic reactions.

[0109] For components that do not directly contact the human body (such as the cylinder 1, the valve body 41 in the flow regulating mechanism 4, the top box 43, etc.), durable engineering plastics (such as ABS or PC) or metal materials (such as stainless steel or aluminum alloy) can be selected to ensure the structural strength and service life of the device.

[0110] The first magnetic ring 9 and the second magnetic ring 8 should be made of neodymium iron boron magnets with sufficient magnetic force and not easy to demagnetize. These magnets should be encapsulated in a plastic shell to prevent oxidation and corrosion.

[0111] All rubber sealing rings (such as the first rubber ring 12 and the second rubber ring 6) should be made of medical-grade rubber materials that are resistant to aging and wear to ensure sealing after long-term use.

[0112] The entire product should comply with relevant medical device safety standards, such as ISO10993 biocompatibility testing standards, ISO13485 quality management system standards, etc.

[0113] The present application also provides a method for using a breathing training device, the method comprising the following steps:

[0114] Preparation

[0115] The spherical airbag 5 is mounted on the cylinder body 1 , ensuring that the first rubber ring 12 is inserted into the first annular groove 52 and achieves interference fit, while the first magnetic rings 9 are attracted to each other.

[0116] Choose whether to install the splicing pipe 3 as needed. If the length of the cylinder body 1 needs to be increased, align the second rubber ring 6 of the splicing pipe 3 with the second annular groove 7 of the cylinder body 1 to achieve interference fit, and ensure that the second magnetic rings 8 attract each other.

[0117] Flow regulation stage

[0118] The position of the valve plate 42 in the flow regulating mechanism 4 is adjusted to change the air flow through the valve body 41. The flow regulation can be achieved by rotating the knob on the top box 43, thereby driving the valve plate 42 to rotate.

[0119] The position of the pointing rod 49 on the rotating disk 48 is observed to determine the specific rotation angle of the valve plate 42 .

[0120] Training phase

[0121] The patient exhales and inhales through the air nozzle 2, and the exhaled air enters the spherical airbag 5 through the cylinder body 1 to expand it; when inhaling, the air in the spherical airbag 5 returns to the cylinder body 1, so that the spherical airbag 5 returns to its original state.

[0122] Adjust your breathing rhythm and depth according to training needs and your personal physical condition.

[0123] Monitoring and adjustment phase

[0124] Numerical simulation methods are used to predict the changes in the spherical airbag under different flow settings.

[0125] Set the initial conditions: initial spherical airbag radius R0, flow rate Q, and time step Δt.

[0126] The change of the radius of the spherical airbag with time is iteratively calculated using a numerical integration method (such as Euler's method).

[0127] Analyze the results and adjust the position of the valve sheet according to the changes in the spherical airbag to achieve the expected training effect.

[0128] The position of the valve plate 42 in the flow regulating mechanism 4 is adjusted according to the simulation results to optimize the training effect.

[0129] Ending Phase

[0130] After the training is completed, the splicing tube 3 and the spherical airbag 5 are disassembled as needed for cleaning and maintenance.

[0131] If the spherical airbag 5 needs to be replaced, just repeat the steps in the preparation stage.

[0132] Among them, the monitoring and adjustment stage uses a computer to predict the changes of the spherical airbag under different flow settings. The main purpose of "predicting the changes of the spherical airbag under different flow settings" is to achieve more accurate and personalized breathing training. Specifically, the goal of "predicting the changes of the spherical airbag under different flow settings" is summarized as follows: Personalized training: By adjusting the flow rate, it can adapt to the breathing ability and training needs of different users. Different users may require different training intensities, such as children, adults, patients in the early or late stages of rehabilitation, etc.

[0133] Training effect evaluation: By predicting the changes in the spherical airbag, the effect of training under different flow settings can be evaluated. This helps doctors or therapists adjust training plans based on patient feedback and progress.

[0134] User Guidance: Provides an intuitive way for users to understand how to adjust the flow rate to achieve the ideal training intensity. For example, users can judge whether the flow rate setting needs to be adjusted based on the changes in the spherical airbag.

[0135] Equipment Optimization: Predicting the changes in the spherical airbag through mathematical models can help designers optimize the performance of the equipment. For example, the best valve position and flow setting can be determined to ensure that the training is both safe and effective.

[0136] Education and Training: Provide users with educational information about the principles of breathing training to help them understand how to use the equipment effectively. Doctors or therapists can also use this information to train patients on how to use the equipment correctly.

[0137] Product Verification: During the product development stage, the design of the device can be verified to be reasonable by simulating the changes in the spherical airbag under different flow settings. This helps to ensure that the device can work properly under various flow settings.

[0138] Safety assessment: By simulating the changes in the spherical airbag under different flow settings, the performance of the device under extreme conditions can be evaluated to ensure its safety. For example, it can be checked whether the spherical airbag will rupture under high flow settings.

[0139] Predict the changes of spherical airbag under different flow settings, including the following steps:

[0140] Step 1: Establish the relationship between flow rate and valve position

[0141] First, it is necessary to determine the relationship between the position of the valve plate 42 and the flow rate through the valve body 41. The position of the valve plate can be represented by a rotation angle θ, and the flow rate Q can be approximately represented by the following formula:

[0142]

[0143] in:

[0144] Q is the flow rate through the valve body;

[0145] k is a coefficient that depends on the flow channel shape factor;

[0146] A is the effective area of ​​the valve opening;

[0147] ΔP is the pressure difference on both sides of the valve body;

[0148] ρ is the gas density.

[0149] The effective area A of the valve opening can be calculated based on the rotation angle θ of the valve. Assuming that the inner diameter of the valve body is D, the effective area A can be expressed as:

[0150]

[0151] Step 2: Establish the relationship between flow rate and spherical balloon volume change

[0152] Next, it is necessary to establish the relationship between the flow rate Q and the volume change of the spherical airbag 5. The volume V of the spherical airbag can be expressed by the following formula:

[0153]

[0154] in:

[0155] V is the volume of the spherical airbag;

[0156] R is the radius of the spherical balloon.

[0157] The rate of change of the radius R of the spherical airbag with time t can be expressed as:

[0158]

[0159] This is a nonlinear differential equation, which can be solved numerically to obtain the change of the spherical airbag radius over time.

[0160] Based on this, the rate of change of the spherical airbag volume over time can be derived:

[0161] Since the relationship between the volume (V) and radius (R) of a spherical airbag is:

[0162]

[0163] Taking the derivative with respect to time (t), we get the volume change rate

[0164]

[0165] Will Substituting the expression into the above formula, we get the volume change rate:

[0166]

[0167] This means that the rate of change of the spherical airbag volume over time is proportional to the flow rate (Q) through the valve body.

[0168] Step 3: Numerical simulation

[0169] In order to solve the above differential equation, numerical integration methods such as Euler's method or Runge-Kutta method can be used. Assuming the initial condition is R(0) = R0 (initial radius), the simulation can be performed as follows:

[0170] 1. Initialization parameters:

[0171] Set the time step Δt;

[0172] Set the initial state R(0)=R0;

[0173] Set the flow rate Q, which depends on the position θ of the valve plate.

[0174] 2. Iterative update:

[0175] For each time step Δt, a new radius R(t+Δt) is calculated using a numerical method.

[0176] Step 4: Calculation process

[0177] 1. Set initial conditions:

[0178] Set the initial valve position θ;

[0179] Set the radius R0 of the initial spherical airbag.

[0180] 2. Calculate flow:

[0181] Calculate the effective area A according to the valve plate position θ;

[0182] Calculate the flow rate Q using the given parameters.

[0183] 3.Simulate the expansion process of a spherical airbag:

[0184] A numerical method (such as Euler method) is used to iteratively calculate the change of the radius R of the spherical airbag with time;

[0185] The radius R of the spherical balloon is recorded after each time step.

[0186] 4. Analysis results:

[0187] Analyze the changes of spherical airbag under different flow settings;

[0188] Adjust the position of the valve plate according to the results to achieve the desired training effect.

[0189] Sample Code

[0190] Here is a Python code example to demonstrate how to use Euler's method for numerical simulation:

[0191] ```Python

[0192] importnumpyasnp

[0193] defdR_dtQ,R:

[0194] return3Q / 4np.piR2

[0195] defsimulateR(0),Q,dt,time_steps:

[0196] R=R(0)

[0197] Rs=[R(0)]

[0198] for_inrangetime_steps:

[0199] dR=dR_dtQ,Rdt

[0200] R+=dR

[0201] Rs.appendR

[0202] returnRs

[0203] Parameter settings

[0204] R(0)=0.05 initial radius m

[0205] Q=0.001 flow rate m 3 / s

[0206] dt = 0.1 time step s

[0207] time_steps = 100: number of simulation time steps

[0208] Run a simulation

[0209] Rs=simulateR(0),Q,dt,time_steps

[0210] times=np.arange0,dttime_steps,dt

[0211] Output

[0212] print"Times:",times

[0213] print"Radiusm:",Rs

[0214] ```

[0215] This code simulates the inflation of a spherical balloon at a given flow rate Q. You can adjust these values ​​based on your actual parameters to get more accurate results.

[0216] Through this mathematical model, doctors or patients can adjust the position of the valve as needed to achieve specific training effects, such as adjusting the degree of expansion of the spherical airbag to achieve more precise breathing training.

[0217] The following is a specific embodiment. Based on the above mathematical model, a specific example is constructed to show how to use a breathing training device for breathing training. A specific flow setting will be considered, and the Euler method will be used to simulate the expansion process of a spherical airbag.

[0218] Example

[0219] Parameter settings

[0220] Initial radius (R0 = 0.05) m

[0221] Flow rate (Q = 0.001) cubic meters per second (m 3 / s)

[0222] Time step (Deltat = 0.1) seconds (s)

[0223] Number of simulation time steps (N=100)

[0224] Mathematical model

[0225] The relationship between the volume (V) and radius (R) of a spherical airbag is:

[0226]

[0227] The rate of change of the radius (R) of the spherical airbag with time (t) is:

[0228]

[0229] Numerical simulation

[0230] Use the Euler method to simulate the expansion process of a spherical airbag. The following is a specific Python code example:

[0231] importnumpyasnp defdR_dt(Q,R):

[0232] """Calculate the rate of change of radius over time"""

[0233] return3*Q / (4*np.pi*R**2)

[0234] defsimulate(R0,Q,dt,time_steps):

[0235] """Using the Euler method to simulate the inflation process of a spherical airbag"""

[0236] R=R0

[0237] Rs=[R0]

[0238] for_inrange(time_steps):

[0239] dR=dR_dt(Q,R)*dt

[0240] R+=dR

[0241] Rs.append(R)

[0242] returnRs

[0243] Parameter settings

[0244] R0=0.05 initial radius (m)

[0245] Q=0.001 flow rate (m 3 / s)

[0246] dt = 0.1 time step (s)

[0247] time_steps = 100: number of simulation time steps

[0248] Run a simulation

[0249] Rs=simulate(R0,Q,dt,time_steps)

[0250] times=np.arange(0,dt*time_steps,dt)

[0251] Output

[0252] print("Time(s):",times)

[0253] print("Radius(m):",Rs)

[0254] ```

[0255] Results Analysis

[0256] By running the above code, we can get the change of the radius of the spherical airbag over time. It can be observed that as time goes by, the radius of the spherical airbag gradually increases, which reflects the expansion process of the spherical airbag.

[0257] Analysis and Conclusion

[0258] Based on the simulation results, you can see how the radius of the spherical airbag changes over time. For different flow settings, the expansion speed of the spherical airbag will also be different. If you want a faster or slower expansion speed, you can change the flow rate (Q) by adjusting the position of the valve.

[0259] For example, if you want the spherical airbag to expand more slowly during training, you can reduce the flow rate (Q), which can be achieved by adjusting the position of the valve plate. Conversely, if you want the spherical airbag to expand faster, you can increase the flow rate (Q).

[0260] In this way, doctors or patients can adjust the inflation speed of the spherical airbag according to training needs, thereby achieving more precise breathing training.

Claims

1. A breathing training device, comprising a cylinder (1), an air nozzle (2) and a spherical air bag (5) respectively connected to both ends of the cylinder (1), a flow regulating mechanism (4) being installed outside the cylinder (1), characterized in that: A splicing pipe (3) is detachably connected between the cylinder body (1) and the air nozzle (2); an upper connecting nozzle (51) is fixedly connected to the lower end of the spherical airbag (5); a lower connecting nozzle (11) is fixedly passed through the end of the cylinder body (1); the lower connecting nozzle (11) is located below the upper connecting nozzle (51) and is in close contact with the upper connecting nozzle (51); a first annular groove (52) is formed at the lower end of the upper connecting nozzle (51); a first rubber ring (12) is fixed to the upper end of the lower connecting nozzle (11); the first rubber ring (12) is inserted into the first annular groove (52) and is interference fit with the first annular groove (52); a first magnetic ring (9) is fixed to the outer side of the lower end of the upper connecting nozzle (51) and the outer side of the upper end of the lower connecting nozzle (11); the first magnetic ring (9) is located outside the first rubber ring (12) and the first annular groove (52); the first magnetic rings (9) are attracted to each other.

2. A breathing training device according to claim 1, characterized in that: A second rubber ring (6) is fixed to the left end of the splicing pipe (3) and the left end of the air nozzle (2); a second annular groove (7) is formed at the right end of the splicing pipe (3) and the head end of the cylinder body (1); the second rubber ring (6) is inserted into the second annular groove (7) and is interference fit with the second annular groove (7); a second magnetic ring (8) is fixed to the outer sides of the left and right ends of the splicing pipe (3), the outer side of the left end of the air nozzle (2) and the outer side of the head end of the cylinder body (1); the second magnetic ring (8) is located on the outer sides of the second rubber ring (6) and the second annular groove (7); and the second magnetic rings (8) are attracted to each other.

3. A breathing training device according to claim 1, characterized in that: The flow regulating mechanism (4) comprises a valve body (41), a valve plate (42), a top box (43), a vertical shaft (44), a worm gear (45), a horizontal shaft (46), and a worm (47); the valve body (41) and the cylinder body (1) are an integral structure; and the valve plate (42) is rotatably connected to the inside of the valve body (41).

4. A breathing training device according to claim 3, characterized in that: The top box (43) is fixed to the upper end of the valve body (41), the vertical shaft (44) is rotatably connected to the inside of the top box (43), the lower part of the vertical shaft (44) penetrates into the inside of the valve body (41), and the lower part of the vertical shaft (44) is fixed to the valve plate (42).

5. A breathing training device according to claim 4, characterized in that: The worm wheel (45) is fixed on the outside of the vertical shaft (44), the worm (47) is drivingly connected to the left part of the worm wheel (45), the transverse shaft (46) is fixed at the center of the worm (47), the front part of the transverse shaft (46) passes through the top box (43), and a knob is fixed on the front part of the transverse shaft (46).

6. A breathing training device according to claim 5, characterized in that: The upper end of the vertical shaft (44) movably penetrates the top box (43), a rotating disk (48) is fixed to the upper end of the vertical shaft (44), and pointing rods (49) are fixed at opposite ends of the surface of the rotating disk (48), and the pointing rods (49) correspond to the two ends of the valve plate (42).

7. A method for using a breathing training device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Preparation The spherical airbag (5) is mounted on the cylinder body (1), ensuring that the first rubber ring (12) is inserted into the first annular groove (52) and achieves an interference fit, and at the same time, the first magnetic rings (9) are attracted to each other; Whether to install the splicing pipe (3) is selected according to the need. If the length of the cylinder body (1) needs to be increased, the second rubber ring (6) of the splicing pipe (3) is aligned with the second annular groove (7) of the cylinder body (1) to achieve interference fit, and at the same time, the second magnetic rings (8) are ensured to attract each other; Flow regulation stage Turning the knob on the top box (43) to adjust the position of the valve plate (42) in the flow regulating mechanism (4) to change the air flow through the valve body (41); Observe the position of the pointing rod (49) on the rotating disk (48) to determine the specific rotation angle of the valve plate (42); Training phase The patient exhales and inhales through the nozzle (2), and the exhaled air passes through the cylinder (1) and enters the spherical airbag (5), causing it to expand; when inhaling, the air in the spherical airbag (5) returns to the cylinder (1), causing the spherical airbag (5) to return to its original state; Adjust breathing rhythm and depth according to training needs and personal physical condition; Monitoring and adjustment phase Use numerical simulation methods to predict the changes in the spherical airbag under different flow settings; Set the initial conditions: initial spherical airbag radius R0, flow rate Q, time step Δt; The change of the spherical airbag radius with time is iteratively calculated using the numerical integration method; Analyze the results and adjust the position of the valve sheet according to the changes of the spherical airbag to achieve the expected training effect; According to the simulation results, the position of the valve plate (42) in the flow regulating mechanism (4) is adjusted to optimize the training effect; Ending Phase After the training is completed, the splicing tube (3) and the spherical airbag (5) are disassembled as needed for cleaning and maintenance; If the spherical airbag (5) needs to be replaced, repeat the steps in the preparation stage.

8. The method for using the breathing training device according to claim 7, characterized in that: The monitoring and adjustment stage is to use a computer to predict the changes of the spherical airbag under different flow settings, specifically, including the steps of: Step 1: Establish the relationship between the position of the valve plate (42) and the flow rate through the valve body (41), which can be expressed as: in: Q is the flow rate through the valve body; k is a coefficient that depends on the flow channel shape factor; A is the effective area of ​​the valve opening; ΔP is the pressure difference on both sides of the valve body; ρ is the gas density. The effective area A of the valve plate opening is calculated according to the rotation angle θ of the valve plate, and the formula is expressed as follows: Step 2: Establish the relationship between the volume of the spherical airbag and the time, expressed as follows: in: V is the volume of the spherical airbag; QThe flow rate through the valve body; t is time; The equation is solved by numerical integration method to obtain the change of the spherical airbag radius with time; Step 3: Numerical simulation Set initialization parameters: Set the time step Δt; Set the initial state R(0)=R0, where R0 is the initial radius; Set the flow rate Q, which depends on the position of the valve plate θ; Iterative updates: For each time step Δt, a new radius R(t+Δt) is calculated using a numerical method. Step 4: Calculation process Set initial conditions: Set the initial valve plate position θ; Set the radius R0 of the initial spherical airbag. Calculate flow: Calculate the effective area A according to the valve plate position θ; Calculate the flow rate Q using the given parameters. Simulate the expansion process of a spherical airbag: The change of the radius R of the spherical airbag with time is iteratively calculated using a numerical method; The radius R of the spherical airbag is recorded after each time step; Analysis results: Analyze the changes of spherical airbag under different flow settings; Adjust the position of the valve plate according to the results to achieve the desired training effect.

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