Respiratory training auxiliary device for obese patient

Abstract

The invention relates to the field of medical rehabilitation instruments, in particular to a respiratory training assisting device for obese patients, which comprises a breathing mask and a wearing module, the wearing module comprises a self-adaptive trunk fixing assembly, a dynamic supporting assembly and a transmission assembly, the self-adaptive trunk fixing assembly comprises a first arc-shaped frame, a second arc-shaped frame and a locking assembly, buffer pads are arranged on the inner side of the first arc-shaped frame and the inner side of the second arc-shaped frame, and strain gauges are embedded in the buffer pads; the dynamic supporting assembly comprises a chest air bag set and an abdomen air bag set and is communicated with an air pump through a catheter, and the transmission assembly comprises a cam shaft which is provided with a control valve through a connecting rod. The strain gauges are in signal connection with a controller, when the strain gauges detect that local compression force exceeds a preset threshold value, the controller controls the air pump to reduce the inflation rate of the air bag set in the corresponding area, and when the compression force is lower than the threshold value, the inflation rate is increased. The invention aims to provide the chest and abdomen support with the fixed trunk and the dynamically adjustable body, which is high in adaptability.

Description

Technical Field

[0001] This invention relates to the field of medical rehabilitation devices, specifically to a breathing training aid for obese patients. Background Technology

[0002] Obesity has become a growing public health problem worldwide, posing health risks to multiple systems, with the respiratory system being one of the most significantly affected. In obese patients, excessive fat accumulation, particularly in the trunk, alters the normal shape and mobility of the chest and abdomen. Excessive fat accumulation around the chest restricts its expansion; in the abdomen, fat buildup leads to thickening of the abdominal wall and increased intra-abdominal pressure, further limiting the downward movement of the diaphragm. These factors combined often impair respiratory function in obese patients to varying degrees, manifesting as shallow and rapid breathing, decreased pulmonary ventilation, and increased respiratory muscle load, thereby increasing the risk of respiratory diseases such as sleep apnea-hypopnea syndrome and chronic obstructive pulmonary disease.

[0003] Breathing training, as a non-pharmacological treatment, plays a vital role in improving respiratory function in obese patients. Targeted breathing exercises can strengthen respiratory muscles, increase respiratory efficiency, and improve lung ventilation and gas exchange, thereby alleviating dyspnea symptoms and enhancing patients' quality of life. However, the unique physiological characteristics of obese patients present numerous challenges to breathing training, and traditional breathing training methods and assistive devices are often insufficient to meet their needs.

[0004] Existing breathing training devices generally suffer from the following shortcomings: First, traditional fixation devices are mostly standardized designs, and their size and shape are difficult to adapt to the broad torsos of obese patients. During wear, they are prone to loosening and displacement, failing to provide stable support and affecting training effectiveness; or excessive local pressure can cause skin damage and obstructed blood circulation, not only causing discomfort but also potentially leading to local tissue damage, increasing patient pain and resistance to training. Second, during breathing, the range and shape of chest and abdominal movement constantly change. Fixed support structures may not provide sufficient support during inhalation, resulting in limited chest expansion; while during exhalation, they may exert excessive pressure on the chest and abdomen, affecting the smoothness of breathing and thus impacting the safety and effectiveness of breathing training.

[0005] Therefore, a breathing training aid device for obese patients should be developed, taking into account their physiological characteristics. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a respiratory training aid for obese patients. This aid is designed to provide highly adaptable trunk fixation, dynamically adjustable chest and abdominal support, and intelligent training monitoring and control tailored to the physiological characteristics of obese patients. This enhances the comfort, safety, and effectiveness of respiratory training for obese patients, helping them strengthen their respiratory muscles and improve respiratory function.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: A respiratory training assistive device for obese patients includes a breathing mask and a wearable module. The wearable module includes an adaptive trunk fixation component for adapting to and fixing the trunk curve of an obese patient, a dynamic support component for providing dynamic support to the chest and abdomen, and a transmission component for connecting the adaptive trunk fixation component and the dynamic support component. The adaptive trunk fixation component includes a first arc-shaped frame and a second arc-shaped frame. One side of the first arc-shaped frame and the second arc-shaped frame are hinged to each other, and a locking component is installed on the other side of the first arc-shaped frame and the second arc-shaped frame. A honeycomb-shaped buffer pad is provided on the inner side of both the first arc-shaped frame and the second arc-shaped frame, and a strain gauge for detecting the distribution of trunk pressure and the degree of deformation is embedded in the buffer pad.

[0008] The dynamic support assembly includes a chest airbag assembly and an abdominal airbag assembly. Both the chest airbag assembly and the abdominal airbag assembly are connected to a catheter. The end of the catheter away from the chest airbag assembly and the abdominal airbag assembly is connected to an air pump. The transmission assembly includes a camshaft that is linked to the locking assembly. The camshaft is hinged to a connecting rod. A control valve for controlling the air pump flow is installed at the end of the connecting rod away from the camshaft.

[0009] The strain gauge signal is connected to a controller, which is connected to the air pump signal. When the strain gauge detects that the local pressure exceeds a preset threshold, the controller controls the air pump to reduce the inflation rate of the corresponding area airbag group. When the pressure is below the threshold, the inflation rate is increased.

[0010] Furthermore, the breathing mask has a disc-shaped resistance valve on its exhalation tubing, and a pull cord connects the resistance valve to the abdominal airbag assembly.

[0011] The outer surface of the abdominal airbag assembly has an annular protrusion. One end of the pull rope is fixedly connected to the annular protrusion, and the other end of the pull rope is eccentrically connected to the resistance valve. When the abdominal airbag assembly is inflated, the annular protrusion pulls the pull rope, causing the valve plate of the resistance valve to deflect, thereby reducing the flow area of ​​the expiratory tube and increasing the expiratory resistance.

[0012] Furthermore, the locking assembly includes an inner locking rod and an outer locking sleeve. The surface of the inner locking rod is provided with a serrated groove, and the inner side of the outer locking sleeve is provided with an elastic claw that matches the groove. The end of the inner locking rod is hinged to the first arc-shaped frame, and the outer locking sleeve is fixed to the second arc-shaped frame. The cam edge of the cam shaft contacts the outer wall of the outer locking sleeve. When the outer locking sleeve slides along the inner locking rod, it pushes the cam shaft to rotate, which drives the control valve through the connecting rod to change the inflation ratio of the air pump to the chest airbag group and the abdominal airbag group.

[0013] Furthermore, a corrugated tube is provided between the chest airbag assembly and the abdominal airbag assembly. One end of the corrugated tube is connected to the exhaust port of the chest airbag assembly, and the other end of the corrugated tube is connected to the air inlet of the abdominal airbag assembly.

[0014] The outer wall of the bellows is provided with a rack section, which is engaged with an electromagnetic gear electrically connected to the strain gauge; when the strain gauge detects that the trunk deformation exceeds the threshold, the controller drives the electromagnetic gear to rotate, thereby causing the bellows to expand and contract.

[0015] Furthermore, both the outer sides of the first and second arc-shaped frames are provided with arc-shaped slide rails, and sliders are slidably connected to the slide rails. Support rods are fixedly connected to the sliders, and the end of the support rod away from the slider is connected to the headband of the breathing mask.

[0016] When the first and second arc-shaped frames are opened and closed for adjustment, the slider slides along the slide rail, and the wearing position of the breathing mask is adjusted synchronously through the support rod.

[0017] Furthermore, the valve plate of the resistance valve has a fan-shaped vent hole, and a counterweight is provided on the edge of the valve plate; the inner wall of the exhalation pipe is provided with a positioning boss, and when the valve plate deflects at an angle exceeding 30°, the counterweight contacts the positioning boss to form a limit.

[0018] Furthermore, the control valve is a three-position four-way valve, and the valve core of the control valve is equipped with a return spring. The valve core is connected to the connecting rod through the return spring; the cam of the camshaft is provided with a first protrusion and a second protrusion.

[0019] When the locking assembly is in the locked state, the first protrusion pushes the connecting rod to position the valve core in the position of inflating the abdominal airbag assembly; when the locking mechanism is unlocked, the second protrusion contacts the connecting rod, and the valve core returns to the position of inflating the chest airbag assembly.

[0020] Furthermore, the inner wall of the arc-shaped slide rail is provided with several positioning recesses, and the slider is provided with steel ball springs that are adapted to the positioning recesses; when the slider slides to the target position, the steel ball springs are engaged in the positioning recesses to achieve positioning.

[0021] Furthermore, each honeycomb unit of the honeycomb buffer pad is equipped with a spring. One end of the spring is fixedly connected to the surface of the buffer pad, and the other end of the spring is fixedly connected to the first arc-shaped frame and the second arc-shaped frame. When the torso compresses the honeycomb buffer pad, the degree of deformation of the spring and the detection signal of the strain gauge complement each other. The controller controls the operation of the air pump by integrating the data from both.

[0022] Furthermore, the breathing mask is also equipped with a breathing sensor for monitoring breathing rate and breathing depth. The breathing sensor is connected to the controller. The controller dynamically adjusts the inflation strategy of the chest airbag group and the abdominal airbag group based on the breathing data fed back by the breathing sensor and the trunk compression force and deformation data detected by the strain gauge.

[0023] It also includes a display screen, which is connected to the controller via signals. The display screen is used to show relevant parameters of the breathing training in real time.

[0024] The above approach has the following beneficial effects:

[0025] 1. This solution, through the linkage design of adaptive trunk fixation components and dynamic support components, can automatically adapt to and stably fix the body according to the trunk curve of obese patients. At the same time, it dynamically adjusts the support strength of the chest and abdominal airbag groups. Compared with the shortcomings of traditional technologies, such as rigid fixation structures, inability to adapt to irregular trunk curves, and constant support strength, this solution significantly improves wearing stability and comfort, and avoids the problem of the device loosening and slipping during training.

[0026] 2. This solution utilizes the coordinated operation of strain gauges, controllers, and air pumps to adjust the inflation rate of the airbag assembly in real time according to the trunk compression force. Furthermore, the springs and strain gauges within the honeycomb-shaped buffer pads complement each other, making the adjustment more precise. Compared to traditional technologies that lack pressure feedback and cannot adjust the support force as needed, which can easily lead to local compression or insufficient support, this solution effectively reduces discomfort during training and protects the patient's body.

[0027] 3. In this solution, the operation of the locking component is controlled by the camshaft, connecting rod and other transmission components to change the inflation ratio of the chest and abdominal airbag groups. This achieves simultaneous fixation and support optimization. Compared with the shortcomings of traditional technology where the fixation and support structures work independently and need to be adjusted separately, this simplifies the operation process and improves the ease of use of the device.

[0028] 4. The resistance valve and the abdominal airbag assembly in this solution are linked by a pull rope, which can automatically adjust the expiratory resistance according to the expansion degree of the abdominal airbag assembly. In addition, the breathing sensor and controller can dynamically adjust the inflation strategy. Compared with the shortcomings of traditional technology, which requires manual adjustment of breathing resistance and cannot automatically adapt to the patient's breathing status, this solution realizes personalized dynamic adjustment of training intensity and improves the effect of breathing training.

[0029] 5. The coordination of the arc-shaped slide rail, slider and support rod in this solution can simultaneously adjust the position of the breathing mask when the frame is opened and closed. The steel ball spring and positioning recess ensure stable positioning. Compared with the shortcomings of traditional technology where the position of the breathing mask needs to be adjusted separately and is prone to misalignment due to frame changes, this solution ensures that the breathing mask always fits the face and avoids air leakage affecting training.

[0030] 6. This solution displays breathing training parameters in real time on a screen and combines data from multiple sensors to achieve comprehensive monitoring. Compared with traditional technologies that lack intuitive parameter feedback and make it difficult to grasp the training status, this solution makes it easier for patients and medical staff to understand the training situation in a timely manner, adjust the training plan, and improve the scientific nature and controllability of the training.

[0031] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] Figure 1 This is an isometric view of an embodiment of the breathing training aid device for obese patients according to the present invention;

[0033] Figure 2 This is a cross-sectional view of the adaptive trunk fixation component in an embodiment of the respiratory training assist device for obese patients of the present invention.

[0034] Figure 3 This is a framework diagram of an embodiment of the breathing training aid device for obese patients according to the present invention.

[0035] The reference numerals in the accompanying drawings of the instruction manual include: 1. Breathing mask; 2. First arc-shaped frame; 3. Second arc-shaped frame; 4. Chest airbag assembly; 5. Abdominal airbag assembly; 6. Inner locking rod; 7. Outer locking sleeve; 8. Exhalation tube. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The following detailed description illustrates the specific implementation method:

[0040] Example 1:

[0041] As attached Figures 1 to 3 As shown: A breathing training aid for obese patients includes a breathing mask 1 and a wearable module. The breathing mask 1 has a disc-shaped resistance valve on its exhalation channel 8. The wearable module includes an adaptive trunk fixation component for adapting to and fixing the trunk curve of an obese patient, a dynamic support component for providing dynamic support to the chest and abdomen, and a transmission component for connecting the adaptive trunk fixation component and the dynamic support component. The adaptive trunk fixation component includes a first arc-shaped frame 2 and a second arc-shaped frame 3. One side of the first arc-shaped frame 2 and the second arc-shaped frame 3 are hinged to each other, and a locking component is installed on the other side of the first arc-shaped frame 2 and the second arc-shaped frame 3. The locking component includes an inner locking rod 6 and an outer locking sleeve 7. The surface of the inner locking rod 6 is provided with a serrated groove, and the inner side of the outer locking sleeve 7 is provided with an elastic claw that matches the groove. The end of the inner locking rod 6 is hinged to the first arc-shaped frame 2, and the outer locking sleeve 7 is fixed to the second arc-shaped frame 3. The cam edge of the cam shaft contacts the outer wall of the outer locking sleeve 7. When the outer locking sleeve 7 slides along the inner locking rod 6, it pushes the cam shaft to rotate, which drives the control valve through the connecting rod to change the inflation ratio of the air pump to the chest airbag group 4 and the abdominal airbag group 5.

[0042] The inner sides of the first arc-shaped frame 2 and the second arc-shaped frame 3 are provided with honeycomb-shaped buffer pads, and strain gauges for detecting the distribution of compressive force and the degree of deformation of the torso are embedded in the buffer pads.

[0043] The dynamic support assembly includes a chest airbag group 4 and an abdominal airbag group 5. Both the chest airbag group 4 and the abdominal airbag group 5 are connected to a conduit. The end of the conduit away from the chest airbag group 4 and the abdominal airbag group 5 is connected to an air pump. The transmission assembly includes a camshaft that is linked to the locking assembly. The camshaft is hinged to a connecting rod. A control valve for controlling the air pump flow is installed at the end of the connecting rod away from the camshaft. The strain gauge signal is connected to a controller. The controller is connected to the air pump signal. When the strain gauge detects that the local pressure exceeds a preset threshold, the controller controls the air pump to reduce the inflation rate of the corresponding area airbag group. When the pressure is below the threshold, the inflation rate is increased.

[0044] The control valve is a three-position four-way valve. The valve core of the control valve is equipped with a return spring, and the valve core is connected to the connecting rod through the return spring. The cam of the camshaft has a first protrusion and a second protrusion. When the locking assembly is in the locked state, the first protrusion pushes the connecting rod to make the valve core in the position of inflating the abdominal airbag assembly 5. When the locking mechanism is unlocked, the second protrusion contacts the connecting rod, and the valve core returns to the position of inflating the chest airbag assembly 4.

[0045] A pull rope connects the resistance valve to the abdominal airbag assembly 5. The outer surface of the abdominal airbag assembly 5 is provided with an annular protrusion. One end of the pull rope is fixedly connected to the annular protrusion, and the other end of the pull rope is eccentrically connected to the resistance valve. When the abdominal airbag assembly 5 is inflated, the annular protrusion pulls the pull rope, causing the valve plate of the resistance valve to deflect, thereby reducing the flow area of ​​the exhalation channel 8 and increasing the exhalation resistance.

[0046] A bellows is provided between the chest airbag assembly 4 and the abdominal airbag assembly 5. One end of the bellows is connected to the exhaust port of the chest airbag assembly 4, and the other end of the bellows is connected to the air inlet of the abdominal airbag assembly 5. The outer wall of the bellows is provided with a rack section, which is engaged with an electromagnetic gear electrically connected to the strain gauge. When the strain gauge detects that the torso deformation exceeds the threshold, the controller drives the electromagnetic gear to rotate, thereby causing the bellows to extend and retract.

[0047] The breathing mask 1 is also equipped with a breathing sensor for monitoring breathing rate and breathing depth. The breathing sensor is connected to the controller. The controller dynamically adjusts the inflation strategy of the chest airbag group 4 and the abdominal airbag group 5 based on the breathing data fed back by the breathing sensor and the trunk compression force and deformation data detected by the strain gauge. It also includes a display screen, which is connected to the controller and is used to display the relevant parameters of breathing training in real time.

[0048] Both the outer sides of the first arc-shaped frame 2 and the second arc-shaped frame 3 are provided with arc-shaped slide rails. A slider is slidably connected to the slide rail, and a support rod is fixedly connected to the slider. The end of the support rod away from the slider is connected to the headband of the breathing mask 1. When the first arc-shaped frame 2 and the second arc-shaped frame 3 are opened and closed for adjustment, the slider slides along the slide rail, and the wearing position of the breathing mask 1 is adjusted synchronously through the support rod.

[0049] The specific implementation process is as follows: When the patient uses the device of this invention, the first arc-shaped frame 2 and the second arc-shaped frame 3 are first placed around the torso, and initial fixation is achieved by adjusting the locking assembly. The outer locking sleeve 7 is pushed to slide along the inner locking rod 6, so that the elastic claw on its inner side engages with the serrated groove of the inner locking rod 6, completing the locking of the adaptive torso fixation assembly. During this process, the outer wall of the outer locking sleeve 7 pushes the camshaft to rotate. When the locking assembly is in the locked state, the first protrusion of the camshaft pushes the connecting rod, so that the valve core of the three-position four-way valve is in the position of inflating the abdominal airbag assembly 5. The air pump inflates the abdominal airbag assembly 5 first through the conduit. The honeycomb-shaped buffer pads on the inner side of the first arc-shaped frame 2 and the second arc-shaped frame 3 will be in close contact with the patient's torso. The honeycomb structure of the buffer pads can disperse pressure and improve wearing comfort. At the same time, the strain gauges in the buffer pads start to work, monitoring the pressure distribution at the contact point between the torso and the frame in real time.

[0050] Once the abdominal airbag assembly 5 is inflated to a certain extent, providing adequate support for the patient's abdomen, the locking assembly is unlocked to a position suitable for the torso. The outer locking sleeve 7 slides along the inner locking rod 6, pushing the camshaft to rotate, causing the second protrusion to contact the connecting rod. The valve core is reset under the action of the return spring, switching to the position of inflating the chest airbag assembly 4. The air pump then inflates the chest airbag assembly 4, which gradually expands, providing stable support for the patient's chest.

[0051] As the abdominal airbag assembly 5 inflates, the annular protrusions on its outer surface pull the pull cord. Because the pull cord is eccentrically connected to the valve plate of the resistance valve, the valve plate deflects, reducing the flow area of ​​the expiratory conduit 8 and increasing expiratory resistance. This effectively exercises the patient's respiratory muscles. Simultaneously, the honeycomb-shaped buffer pads inside the first arc-shaped frame 2 and the second arc-shaped frame 3 make closer contact with the torso. Strain gauges within the buffer pads continuously monitor the distribution of torso pressure and the degree of deformation in real time, transmitting the signals to the controller. At this time, if the patient is performing chest breathing training, the abdominal airbag assembly 5 does not continue to inflate, the resistance valve maintains its initial flow area, and the expiratory resistance is lower, making it more suitable for the needs of chest breathing training. The bellows also adaptively expands and contracts according to the deformation of the torso, ensuring that the support for both the chest and abdomen conforms to the torso.

[0052] When a patient begins breathing training, the breathing sensors on the breathing mask 1 accurately monitor respiratory rate and depth, and promptly feed this data back to the controller. The controller combines the data on trunk compression and deformation detected by strain gauges with the data from the breathing sensors to dynamically adjust the inflation strategy: if the strain gauges detect localized compression exceeding a preset threshold, the controller immediately controls the air pump to reduce the inflation rate of the corresponding area's airbag assembly to avoid excessive compression of the patient's trunk; if the compression is below the threshold, the inflation rate is increased to ensure support. For example, when the patient inhales, the chest expands, and the chest airbag assembly 4 is compressed. After the strain gauges detect the pressure change, the controller can adjust the air pump's inflation volume of the chest airbag assembly 4 accordingly, matching the support strength to the chest expansion state.

[0053] When the strain gauge detects that the torso deformation exceeds the threshold, the controller drives the electromagnetic gear to rotate. The electromagnetic gear meshes with the rack segment on the outer wall of the bellows, thereby causing the bellows to expand and contract. This adjusts the airflow between the chest and abdominal airbag groups 5, ensuring that the support of the two airbag groups can be adjusted in a timely manner according to the torso deformation.

[0054] During the opening and closing adjustment of the first arc-shaped frame 2 and the second arc-shaped frame 3, the slider on the outer arc-shaped slide rail will slide accordingly, and the wearing position of the breathing mask 1 will be adjusted synchronously through the support rod to ensure that the breathing mask 1 is always in close contact with the patient's face, avoiding air leakage and other situations that may affect the breathing training effect. When the slider slides to the appropriate position, the steel ball spring inside will lock into the positioning recess on the inner wall of the slide rail to achieve stable positioning and prevent the breathing mask 1 from shifting due to the slider sliding during training.

[0055] During training, the display screen clearly shows various parameters in real time, such as respiratory rate, respiratory depth, expiratory resistance, and cuff pressure, allowing patients and medical staff to monitor the training status at any time. When the patient's respiratory rate increases or the respiratory depth becomes shallow, the controller adjusts the inflation volume of the air pump to the chest cuff group 4 and the abdominal cuff group 5 based on the data fed back from the respiratory sensors. At the same time, the resistance valve automatically adjusts to ensure that the training intensity is precisely adapted to the patient's current physical condition, ensuring the safety and effectiveness of the training.

[0056] The controller dynamically adjusts the inflation strategy of the air pump for the two sets of airbags by constantly combining the pressure data from the strain gauges and the respiratory data from the respiratory sensors. This ensures that the support strength and breathing rhythm are coordinated, preventing both excessive compression of the patient's torso and insufficient support that could affect the training effect. This invention, through the organic combination of mechanical linkage and intelligent control, can provide personalized support based on the torso characteristics of obese patients, and can dynamically adapt the intensity of respiratory training through airbag inflation and resistance valve adjustment, greatly improving the effectiveness and safety of respiratory training.

[0057] Example 2:

[0058] The difference from Embodiment 1 is that the valve plate of the resistance valve has a fan-shaped vent hole and a counterweight is provided on the edge of the valve plate; the inner wall of the exhalation pipe 8 is provided with a positioning boss, and when the valve plate deflects at an angle of more than 30°, the counterweight contacts the positioning boss to form a limit.

[0059] The specific implementation process is as follows: As the abdominal airbag assembly 5 inflates, the annular protrusion on its outer surface pulls the pull cord. Due to the eccentric connection between the pull cord and the valve plate of the resistance valve, the valve plate deflects. At this time, the fan-shaped ventilation hole on the valve plate rotates with the valve plate, and its relative position with the inner wall of the expiratory conduit 8 changes, further precisely adjusting the flow area of ​​the expiratory conduit 8. As the deflection angle of the valve plate gradually increases, the area of ​​the fan-shaped ventilation hole blocked by the inner wall of the conduit increases, the actual ventilation area decreases, and the expiratory resistance increases stepwise, enhancing the training intensity of the respiratory muscles. At the same time, the counterweight on the edge of the valve plate rotates synchronously with the valve plate, using gravity to assist the valve plate in stable deflection and avoid swaying caused by airflow impact. When the deflection angle of the valve plate exceeds 30°, the counterweight will contact the positioning protrusion on the inner wall of the expiratory conduit 8, forming a rigid limit, preventing the valve plate from deflecting excessively and causing the expiratory conduit 8 to be completely closed, ensuring the patient's breathing patency.

[0060] Example 3:

[0061] The difference from Embodiment 2 is that each honeycomb unit of the honeycomb buffer pad is equipped with a spring. The specifications (deformation data) of the spring are input into the controller. One end of the spring is fixedly connected to the surface of the buffer pad, and the other end of the spring is fixedly connected to the first arc frame 2 and the second arc frame 3. When the torso compresses the honeycomb buffer pad, the degree of deformation of the spring and the detection signal of the strain gauge complement each other. The controller controls the operation of the air pump by combining the data of both.

[0062] The specific implementation process is as follows: The honeycomb-shaped buffer pads inside the first arc-shaped frame 2 and the second arc-shaped frame 3 are in close contact with the torso. The springs inside the buffer pads are further deformed due to the pressure from the torso, and the degree of deformation is indirectly fed back. At the same time, strain gauges continuously detect the distribution of pressure and the degree of deformation on the torso in real time and transmit the signals to the controller. The controller integrates the degree of spring deformation and the detection signals from the strain gauges, because the two complement each other, and can more comprehensively and accurately grasp the pressure situation on the torso.

[0063] When the strain gauge detects that the torso deformation exceeds the threshold, and this is confirmed by combining the spring deformation data, the controller will drive the electromagnetic gear to rotate, causing the bellows to expand and contract, and adjusting the gas flow between the chest and abdominal airbag assembly 5.

[0064] Example 4:

[0065] The difference from Embodiment 3 is that the inner wall of the arc-shaped slide rail is provided with several positioning recesses, and the slider is provided with steel ball springs that are adapted to the positioning recesses; when the slider slides to the target position, the steel ball springs are engaged in the positioning recesses to achieve positioning.

[0066] The specific implementation process is as follows: When the first arc frame 2 and the second arc frame 3 are adjusted to the appropriate position and the slider slides to the corresponding target position, the steel ball spring is no longer squeezed, and will pop out and get stuck in the positioning recess on the inner side wall of the slide rail, so as to achieve stable positioning of the slider. The breathing mask 1 is fixed in the position that fits the face through the support rod.

[0067] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A respiratory training aid for obese patients, comprising a breathing mask (1) and a wearable module, characterized in that, The wearable module includes an adaptive trunk fixation component for adapting to and fixing the trunk curve of an obese patient, a dynamic support component for providing dynamic support to the chest and abdomen, and a transmission component for connecting the adaptive trunk fixation component and the dynamic support component. The adaptive trunk fixation component includes a first arc frame (2) and a second arc frame (3). One side of the first arc frame (2) and the second arc frame (3) are hinged to each other, and a locking component is installed on the other side of the first arc frame (2) and the second arc frame (3). The inner sides of the first arc frame (2) and the second arc frame (3) are provided with honeycomb-shaped buffer pads, and strain gauges for detecting the distribution of trunk compression force and the degree of deformation are embedded in the buffer pads. The dynamic support assembly includes a chest airbag assembly (4) and an abdominal airbag assembly (5). Both the chest airbag assembly (4) and the abdominal airbag assembly (5) are connected to a catheter. The end of the catheter away from the chest airbag assembly (4) and the abdominal airbag assembly (5) is connected to an air pump. The transmission assembly includes a camshaft that is linked to the locking assembly. The camshaft is hinged to a connecting rod. A control valve for controlling the air pump flow is installed at the end of the connecting rod away from the camshaft. The strain gauge signal is connected to a controller, which is connected to the air pump signal. When the strain gauge detects that the local pressure exceeds a preset threshold, the controller controls the air pump to reduce the inflation rate of the corresponding area airbag group. When the pressure is below the threshold, the inflation rate is increased.

2. The breathing training aid for obese patients according to claim 1, characterized in that, The breathing mask (1) has a disc-shaped resistance valve on its exhalation tube (8), and a pull cord is connected between the resistance valve and the abdominal airbag assembly (5). The outer surface of the abdominal airbag assembly (5) is provided with an annular protrusion. One end of the pull rope is fixedly connected to the annular protrusion, and the other end of the pull rope is eccentrically connected to the resistance valve. When the abdominal airbag assembly (5) is inflated, the annular protrusion pulls the pull rope to deflect the valve plate of the resistance valve, thereby reducing the flow area of ​​the exhalation channel (8) and increasing the exhalation resistance.

3. The breathing training aid for obese patients according to claim 2, characterized in that, The locking assembly includes an inner locking rod (6) and an outer locking sleeve (7). The inner locking rod (6) has a serrated groove on its surface. The outer locking sleeve (7) has an elastic claw that matches the groove on its inner side. The end of the inner locking rod (6) is hinged to the first arc frame (2). The outer locking sleeve (7) is fixed to the second arc frame (3). The cam edge of the cam shaft contacts the outer wall of the outer locking sleeve (7). When the outer locking sleeve (7) slides along the inner locking rod (6), it pushes the cam shaft to rotate. The connecting rod drives the control valve to change the inflation ratio of the air pump to the chest airbag group (4) and the abdominal airbag group (5).

4. The breathing training aid for obese patients according to claim 3, characterized in that, A corrugated tube is provided between the chest airbag group (4) and the abdominal airbag group (5). One end of the corrugated tube is connected to the exhaust port of the chest airbag group (4), and the other end of the corrugated tube is connected to the air inlet of the abdominal airbag group (5). The outer wall of the bellows is provided with a rack section, which is engaged with an electromagnetic gear electrically connected to the strain gauge; when the strain gauge detects that the trunk deformation exceeds the threshold, the controller drives the electromagnetic gear to rotate, thereby causing the bellows to expand and contract.

5. The breathing training aid for obese patients according to claim 4, characterized in that, The outer sides of the first arc frame (2) and the second arc frame (3) are provided with arc slide rails, and sliders are slidably connected on the slide rails. Support rods are fixedly connected to the sliders, and the end of the support rod away from the slider is connected to the headband of the breathing mask (1). When the first arc frame (2) and the second arc frame (3) are opened and closed for adjustment, the slider slides along the slide rail and adjusts the wearing position of the breathing mask (1) synchronously through the support rod.

6. The breathing training aid for obese patients according to claim 5, characterized in that, The valve plate of the resistance valve has a fan-shaped vent hole and a counterweight on the edge of the valve plate; the inner wall of the exhalation pipe (8) is provided with a positioning boss. When the valve plate deflects at an angle of more than 30°, the counterweight contacts the positioning boss to form a limit.

7. The breathing training aid for obese patients according to claim 6, characterized in that, The control valve is a three-position four-way valve. The valve core of the control valve is equipped with a return spring, and the valve core is connected to the connecting rod through the return spring. The cam of the camshaft has a first protrusion and a second protrusion. When the locking assembly is locked, the first protrusion pushes the connecting rod to put the valve core in the position of inflating the abdominal airbag assembly (5); when the locking mechanism is unlocked, the second protrusion contacts the connecting rod and the valve core is reset to the position of inflating the chest airbag assembly (4).

8. The breathing training aid for obese patients according to claim 7, characterized in that, The inner wall of the arc-shaped slide rail is provided with several positioning recesses, and the slider is provided with steel ball springs that are adapted to the positioning recesses; when the slider slides to the target position, the steel ball springs are engaged in the positioning recesses to achieve positioning.

9. The breathing training aid for obese patients according to claim 8, characterized in that, Each honeycomb unit of the honeycomb buffer pad is equipped with a spring. One end of the spring is fixedly connected to the surface of the buffer pad, and the other end of the spring is fixedly connected to the first arc frame (2) and the second arc frame (3). When the torso compresses the honeycomb buffer pad, the degree of deformation of the spring and the detection signal of the strain gauge complement each other. The controller controls the operation of the air pump by integrating the data of both.

10. The breathing training aid for obese patients according to claim 9, characterized in that, The breathing mask (1) is also equipped with a breathing sensor for monitoring breathing rate and breathing depth. The breathing sensor is connected to the controller signal. The controller dynamically adjusts the inflation strategy of the chest airbag group (4) and the abdominal airbag group (5) based on the breathing data fed back by the breathing sensor and the trunk compression force and deformation data detected by the strain gauge. It also includes a display screen, which is connected to the controller via signals. The display screen is used to show relevant parameters of the breathing training in real time.

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