An intelligent breathing assistance system for pulmonary rehabilitation

Abstract

The present invention relates to the field of rehabilitation assistance technology, and particularly relates to an intelligent breathing assistance system for pulmonary rehabilitation, comprising: a breathing part, the breathing part includes a breathing cylinder body, the breathing cylinder body includes a fixed cylinder body and a folding cylinder body, and an auxiliary component is provided in the fixed cylinder body; a wearing part, the wearing part includes a chest cover and an abdominal cover, a connection channel and a vibration channel are opened in the chest cover, an airbag is embedded in the abdominal cover, and a vibration expectoration component is provided in the vibration channel; a chest-abdominal movement pattern recognition unit for detecting the breathing pattern of a user; a pulmonary function detection unit for calculating and detecting the tidal volume of the user; a personalized training control unit for adjusting the breathing resistance according to the tidal volume and the breathing pattern. According to different breathing patterns of the user, the present invention utilizes the kinetic energy of the exhaled gas of the user to adjust the breathing assistance force, and real-time monitors key parameters such as tidal volume and recovery condition, further improving the effect of pulmonary rehabilitation and realizing more accurate and effective breathing assistance treatment.

Description

Technical Field

[0001] The present invention relates to the field of rehabilitation assistance technology, and particularly to an intelligent breathing assistance system for pulmonary rehabilitation. Background Art

[0002] With the improvement of people's living standards and the enhancement of health awareness, pulmonary rehabilitation plays an increasingly important role in modern medicine. Traditional pulmonary rehabilitation methods mainly include drug treatment, physical therapy, breathing training, etc., but these methods often have problems such as limited effects and poor user compliance. In recent years, with the continuous development of intelligent technology, intelligent breathing assistance systems have gradually become a research hotspot in the field of pulmonary rehabilitation.

[0003] In the prior art, patent document CN116889667A discloses a portable children's breathing assistance device, including a box body, a mask and an exercise component. A pair of straps is provided on one side of the box body. The exercise component includes a moving plate slidably provided at the bottom end of the box body. A hydraulic rod is provided on the moving plate. A connecting frame is provided at the output rod end of the hydraulic rod. A rotating rod is penetrated through the connecting frame. Connecting handles are provided at both ends of the rotating rod. Two groups of fixing blocks are provided on the moving plate. Pedals are slidably clamped on the two groups of fixing blocks. The pedals can be rotatably connected to the connecting handles. A first pulley is coaxially provided on the rotating rod. A generator is provided on the moving plate. A second pulley connected by a coupling is provided at the input shaft end of the generator. A belt is provided between the first pulley and the second pulley. By pulling the moving plate, after the moving plate is completely pulled out, the accompanying personnel can drive the hydraulic rod to extend to help the child adjust the height of the connecting frame, and complete the height adjustment of the connecting frame to realize a portable and practical breathing assistance device.

[0004] In actual use, the breathing condition of the user may change with the treatment process, physical condition or external environment. Therefore, the auxiliary force provided by the breathing assistance device should be able to be adjusted accordingly to meet the actual needs of the user. However, although the above breathing assistance device has portability and practicality, there are still certain limitations in the dynamic adjustment of the auxiliary force, and it is difficult to achieve the effect of dynamic adjustment according to the actual situation of the user child. For this reason, it is necessary to design an intelligent breathing assistance system for pulmonary rehabilitation, which realizes the real-time monitoring and precise control of the user's breathing condition through integrating advanced technologies such as sensors, controllers and algorithms, so as to provide more accurate and effective breathing assistance treatment. Summary of the Invention

[0005] To solve the above problems, the present invention provides an intelligent breathing assistance system for pulmonary rehabilitation, which adjusts the breathing assistance force by using the kinetic energy of the user's exhaled gas according to different breathing patterns of the user, and real-time monitors key parameters such as tidal volume and recovery situation, further improving the effect of pulmonary rehabilitation and realizing more accurate and effective breathing assistance treatment.

[0006] To achieve the above object, the technical solution of the present invention is as follows: An intelligent breathing assistance system for pulmonary rehabilitation, comprising:

[0007] A breathing part, the breathing part includes a face mask, the face mask is fixedly connected to a breathing cylinder body, the breathing cylinder body includes a fixed cylinder body and a folding cylinder body, one end of the fixed cylinder body is fixedly connected to one side of the face mask and the other end thereof is fixedly connected to the folding cylinder body, a one-way air valve is provided on the side wall of the folding cylinder body away from the fixed cylinder body, an auxiliary component is provided in the fixed cylinder body, when the user exhales and inhales through the face mask, the auxiliary component respectively guides the air flow in the fixed cylinder body according to the intensity of the user's exhalation and inhalation;

[0008] A wearing part, the wearing part sequentially includes a chest cover and an abdominal cover integrally formed from top to bottom, both sides of the abdominal cover are fixedly connected with fixed strap assemblies for fixing the abdominal cover, a back strap assembly for fixing the chest cover is provided on the chest cover, a connection channel and a vibration channel are opened in the chest cover, and an air bag for assisting the user's diaphragmatic movement is embedded in the abdominal cover, both ends of the connection channel are respectively communicated with a telescopic cylinder body and the air bag, one end of the vibration channel is communicated with the middle of the connection channel, the other end of the vibration channel penetrates through the side wall of the chest cover and is communicated with the outside of the chest cover, a vibration expectoration component for generating vibration to assist the user in expectoration is provided in the vibration channel, when the user exhales, the air flow potential energy of the user's exhaled gas is utilized and according to the user's different breathing modes, the air bag and the expectoration component are respectively driven, and the auxiliary intensity of the air bag is proportional to the user's tidal volume;

[0009] A chest and abdomen movement pattern recognition unit, the chest and abdomen movement pattern recognition unit includes a displacement sensor, a pressure sensor and a breathing pattern evaluation module, the displacement sensor is used to detect the vertical displacement between the chest cover and the chest cavity, and the pressure sensor is used to collect the pressure distribution data between the abdominal cover and the user's abdomen;

[0010] A breathing pattern evaluation module, which is used to receive the data signals collected by the displacement sensor and the pressure sensor, analyze and generate the user's breathing pattern data, and then transmit the breathing pattern data to the subsequent unit;

[0011] A pulmonary function detection unit, the pulmonary function detection unit includes a flow sensor, an air bag volume sensor and a tidal volume calculation module; the flow sensor is used to monitor the air flow velocity in real time, and the air bag volume sensor is used to collect the volume change value of the air bag;

[0012] A tidal volume calculation module, which is used to receive the user's exhaled air flow velocity and volume change value respectively collected by the flow sensor and the air bag volume sensor, calculate the tidal volume of the user's breathing through the air bag volume and air flow velocity, and simultaneously evaluate the user's recovery situation;

[0013] A personalized training control unit, including a rotary resistance adjusting member and a resistance adjusting module;

[0014] The resistance adjustment module is used to receive breathing pattern data and tidal volume data, generate a dynamic parameter table based on the user's preset age, gender and medical history, and send different drive signals to the resistance adjustment component according to the dynamic parameter table.

[0015] The technical principle of the above solution is as follows: When the user breathes through the mask, the exhaled gas first enters the breathing cylinder. Inside the breathing cylinder, the auxiliary component dynamically guides the airflow according to the intensity of the user's exhalation and inhalation, providing the necessary auxiliary force for the user's breathing process, thereby helping the user to perform lung rehabilitation more effectively. When the user exhales, the flow potential energy of the exhaled gas drives the expansion of the airbag, providing auxiliary movement for the diaphragm, and at the same time activates the vibrating expectoration component, which helps the user expectorate through vibration to improve breathing conditions. The effectiveness of the diaphragm assistance and expectoration functions is dynamically synchronized with the user's breathing pattern. During the user's breathing process, the chest and abdominal movement pattern recognition unit collects the user's breathing data in real time through displacement sensors and pressure sensors. This data is analyzed and processed by the breathing pattern evaluation module to generate the user's breathing pattern data. The pulmonary function detection unit monitors the user's airflow velocity and airbag volume change in real time through flow sensors and airbag volume sensors. This data is used by the tidal volume calculation module to calculate the user's tidal volume and thus evaluate the user's recovery status. Finally, the personalized training control unit generates personalized training parameters based on the user's breathing pattern and tidal volume data, combined with the user's preset age, gender, and medical history. These parameters are applied in real time to the breathing assistance process through the resistance adjustment element and resistance adjustment module.

[0016] The above scheme has the following beneficial effects:

[0017] 1. Through the combined design of a fixed cylinder and a folding cylinder, the foldable structure can be retracted to reduce the storage volume; the wearable part is formed by integrating the chest cover and abdominal cover, and with the adjustable fixing straps and shoulder strap components, it is lightweight and fits the human body curve. This design makes the overall structure of the device compact, stable to wear, and does not require external large equipment. It is suitable for use at home or on the move, and enhances the user's freedom in rehabilitation training.

[0018] 2. This solution utilizes the flow potential energy of exhaled air to drive the airbag expansion, assisting diaphragmatic movement and activating the vibrating expectorant component. The airbag volume sensor is linked in real time to the tidal volume calculation module, ensuring that the assistance intensity is proportional to the user's actual breathing capacity. This design, which requires no external energy source, directly drives the assistance function through the user's spontaneous breathing, dynamically matching the assistance intensity with the user's recovery progress, avoiding over-reliance or insufficient training.

[0019] 3. The chest and abdomen movement pattern recognition unit analyzes the breathing pattern in real time, such as chest breathing, abdominal breathing, or mixed breathing; the breathing pattern evaluation module adjusts the vibration expectoration frequency and airbag assistance intensity accordingly, and then the personalized training control unit combines the dynamic parameter table, age, gender, and medical history to generate a resistance adjustment signal. It realizes providing differential assistance for different breathing patterns, optimizing the expectoration effect and the training efficiency of the diaphragm, and achieving personalized breathing assistance effect.

[0020] 4. The rigid connection design of the chest cover and the abdominal cover enhances the stability of the device and reduces the movement interference during the breathing assistance process; at the same time, a displacement sensor is designed to detect the chest displacement and a pressure sensor is designed to detect the abdominal pressure distribution, and combined with the tidal volume calculation module to comprehensively evaluate the breathing pattern and the recovery of lung function; through multi-dimensional data fusion, the accuracy of breathing pattern recognition is improved, providing a reliable basis for the evaluation of the rehabilitation progress and parameter adjustment, and reducing the risk of misjudgment.

[0021] Further, the auxiliary component includes a transmission rod rotatably connected in parallel to the inner side wall of the fixed cylinder. A first driven gear close to the mask side and a second driven gear close to the folding cylinder side are sleeved and fixed on the transmission rod. The first driven gear meshes with an input gear, and the second driven gear meshes with an output gear. Both the input gear and the output gear are rotatably connected to the inner side wall of the fixed cylinder. Input rotating blades and output rotating blades are respectively rotatably connected to the surfaces of the input gear and the output gear by grooving.

[0022] Beneficial effects: This design converts the airflow in the fixed cylinder into the rotational motion of the gears through the transmission rod, and then drives the rotation of the input rotating blades and the output rotating blades. The meshing of the first driven gear and the input gear, as well as the meshing of the second driven gear and the output gear, realizes the transmission and conversion of the airflow intensity. When the user exhales, the airflow pushes the first driven gear to rotate, which in turn drives the input gear and the input rotating blades to rotate, converting the kinetic energy of the airflow into mechanical energy. Similarly, when the user inhales, the airflow enters the fixed cylinder through the one-way air valve of the folding cylinder, pushing the second driven gear to rotate, which in turn drives the output gear and the output rotating blades to rotate, realizing the assistance for inhalation.

[0023] Further, the diameter of the first driven gear is smaller than that of the second driven gear, and the diameter of the input gear is larger than that of the output gear.

[0024] Beneficial effects: In this design, when the user exhales or inhales, the transmission mechanism driven by the flowing gas amplifies the rotational power of the output gear relative to the input gear. The speed-up transmission mechanism can enhance the negative pressure generation efficiency of the output rotating blades, enabling the negative pressure to quickly match the breathing rhythm, such as quickly increasing the pressure during inhalation, reducing the probability of breathing assistance lag.

[0025] Further, the number of blades of the input rotating blades is smaller than that of the output rotating blades.

[0026] Beneficial Effects: This design optimizes airflow distribution during breathing. Because the input rotor has fewer blades, it is better driven by the user's exhaled air, providing less resistance during exhalation and enabling smoother exhalation. In contrast, the output rotor, with its larger number of blades, more effectively provides negative pressure assistance for both exhalation and inspiration, improving the efficiency of the respiratory assistance system while ensuring user comfort and safety during breathing.

[0027] Furthermore, the vibration expectorant component includes a spring sheet arranged in the vibration channel, one end of the spring sheet passes through the side wall of the vibration channel and extends to the outside of the chest cover and is fixedly connected to an elastic semicircular body. The spring sheet and the vibration channel are hinged at the penetration point, and the end of the spring sheet away from the semicircular body fits the inner wall of the vibration channel.

[0028] Beneficial Effects: This design, through the combination of a spring plate and a semicircular body, achieves a vibrating expectorant function. When the user exhales, the potential energy of the exhaled air drives the spring plate to vibrate, which in turn drives the semicircular body to vibrate within the vibration channel. This vibration assists the user in expectorating and improving breathing. Furthermore, the design of the spring plate and semicircular body ensures high stability and durability of the vibrating expectorant assembly, ensuring long-term and effective respiratory support.

[0029] Furthermore, a limiting groove is provided on the inner wall of the vibration channel, and the limiting groove corresponds to the fitting position of the spring sheet and the inner wall of the vibration channel.

[0030] Beneficial effects: This design improves the stability and reliability of the vibration expectoration component by setting a limit groove; the limit groove can limit the displacement of the spring sheet during the vibration process, preventing it from being damaged or detaching from the vibration channel due to excessive vibration, and ensuring that the spring sheet can maintain its original vibration frequency and amplitude during long-term use, thereby continuously and effectively providing users with auxiliary treatment of vibration expectoration.

[0031] Furthermore, the limiting groove is an arc-shaped structure.

[0032] Beneficial Effects: The arc-shaped limit groove better aligns with the spring's vibration trajectory, reducing friction and resistance during vibration, thereby improving vibration efficiency. Furthermore, the arc-shaped limit groove design limits the activation of the spring's vibration mechanism. Vibration is only activated when the vibration channel is not squeezed, that is, when the vibration channel is wide enough. This allows the direction of gas flow in the connecting channel to be adjusted according to the breathing pattern, and automatically adjusts the intensity and frequency of the vibration expectoration according to the user's actual breathing condition, providing users with more personalized and efficient respiratory assistance therapy.

[0033] Furthermore, the folding cylinder is a composite structure of a memory alloy frame and a silicone material, which can be folded and stored with one hand.

[0034] Beneficial effects: The collapsible cylinder of this composite structure is not only lightweight but also durable. The shape memory alloy framework endows it with excellent shape memory ability, enabling the collapsible cylinder to quickly return to the preset folded state after each use, facilitating carrying and storage. The silicone material provides good sealing performance and comfort, ensuring that there is no gas leakage or structural deformation caused by external factors during the folding and storage process, enhancing the reliability of the product and the user experience. In addition, the design of single-handed folding and storage greatly facilitates user operation, making this intelligent breathing assistance system more user-friendly and suitable for users of different ages and physical conditions, providing a more convenient and efficient assistance means for pulmonary rehabilitation.

[0035] Furthermore, in the breathing pattern evaluation module, for the calculation of breathing pattern data, the vertical displacement change rate of the chest cavity is calculated using displacement data, and the ratio of the pressure change rate in the central abdominal area is calculated using pressure data; the breathing pattern is classified into thoracic breathing, abdominal breathing, and mixed breathing according to the magnitude of this ratio.

[0036] Beneficial effects: Through precise data analysis, this breathing pattern evaluation module can judge the user's breathing pattern in real time and accurately, providing a scientific basis for subsequent personalized treatment. The different classifications of thoracic breathing, abdominal breathing, and mixed breathing reflect the muscle usage of the user during the breathing process, which is crucial for evaluating respiratory function, detecting respiratory disorders, and formulating targeted rehabilitation plans. By continuously monitoring the breathing pattern, the system can promptly detect breathing abnormalities, remind the user to adjust the breathing method or take necessary medical measures, thereby effectively preventing the occurrence and development of respiratory diseases and further enhancing the pertinence and effectiveness of breathing assistance treatment.

[0037] Furthermore, in the tidal volume calculation module, for the analysis of the user's recovery situation, first, the peak flow rate in the volume change value is extracted, the expiratory time constant is calculated by the ratio of the real-time volume of the airbag to the peak flow rate, and the recovery situation of the user's lung elastic recoil force is evaluated according to the expiratory time constant.

[0038] Beneficial effects: Through precise monitoring of the airbag volume and analysis of the peak flow rate, this tidal volume calculation module can reflect the user's expiratory efficiency and lung elastic state in real time. As an important indicator for evaluating the lung elastic recoil force, the value change of the expiratory time constant directly reflects the recovery situation of lung function. By continuously monitoring the expiratory time constant, the system can promptly detect the improvement or deterioration trend of lung elastic function, provide valuable clinical data for doctors, thereby adjusting the treatment plan and promoting the process of the user's pulmonary rehabilitation. In addition, the analysis results of this module are also helpful for evaluating the treatment effect of the breathing assistance device, providing data support for the optimization and improvement of the device, and further enhancing the overall effect of pulmonary rehabilitation treatment.

[0039] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Brief Description of the Drawings

[0040] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention;

[0041] Figure 2 It is an axonometric sectional view of the chest cover in an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention;

[0042] Figure 3 In an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention Figure 2 An enlarged schematic view of the vibration expectoration component at position A;

[0043] Figure 4 It is an axonometric sectional view of the abdominal cover in an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention;

[0044] Figure 5 It is an axonometric sectional view of the breathing cylinder body in an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention;

[0045] Figure 6 In an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention Figure 5 An enlarged schematic view of the arrangement at the rotation groove at position B;

[0046] Figure 7 It is a schematic diagram of the operation of each unit in an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention.

[0047] Reference numerals in the drawings of the specification include: 1, face mask; 2, breathing cylinder body; 201, fixed cylinder body; 202, folding cylinder body; 3, one-way air valve; 4, chest cover; 5, abdominal cover; 6, fixed strap assembly; 7, back strap assembly; 8, connection channel; 9, vibration channel; 10, airbag; 11, vibration expectoration component; 1101, spring piece; 1102, semi-cylinder; 12, transmission rod; 13, first driven gear; 14, second driven gear; 15, input gear; 16, output gear; 17, input rotating blade; 18, output rotating blade; 19, limiting groove. Detailed Description of the Embodiment

[0048] The technical solutions of the present invention will be clearly and completely described below with reference to the drawings. Apparently, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The following is a further detailed description through specific embodiments:

[0052] Embodiment 1:

[0053] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown: An intelligent breathing assistance system for pulmonary rehabilitation, comprising:

[0054] A breathing part, the breathing part includes a mask 1, a breathing port is opened on the mask 1, a breathing cylinder body 2 is provided on one side of the mask 1, the breathing cylinder body 2 includes a fixed cylinder body 201 and a folding cylinder body 202, the folding cylinder body 202 is made of silica gel material, the fixed cylinder body 201 is communicated with the breathing port and one end thereof is integrally formed with the breathing mask 1, one end of the fixed cylinder body 201 far from the breathing mask 1 is welded and fixed to one end of the folding cylinder body 202, and a one-way air valve 3 is provided on the side wall of the folding cylinder body 202 far from the fixed cylinder body 201. The one-way air valve 3 only allows gas to flow from the outside of the folding cylinder body 202 to the inside of the folding cylinder body 202, so that while the user inhales to supplement fresh air, the gas exhaled by the user can be utilized. <~

[0055] A rotating groove is provided on the inner side wall of the fixed cylinder body 201. Specifically, in combination with Figure 5

[0050] and

[0050] Figure 6As shown in the figure, a transmission rod 12 is provided in the rotation groove. Both ends of the transmission rod 12 are rotatably connected to the inner walls on both sides of the rotation groove through bearings. On the transmission rod 12, there are a first driven gear 13 close to the mask 1 and a second driven gear 14 close to the folding cylinder 202. The first driven gear 13 meshes with an input gear 15, and the second driven gear 14 meshes with an output gear 16. The diameter of the first driven gear 13 is smaller than that of the second driven gear 14, and the diameter of the input gear 15 is larger than that of the output gear 16. Both the input gear 15 and the output gear 16 are rotatably connected to the inner side wall of the fixed cylinder 201 through hinge supports. The surfaces of the input gear 15 and the output gear 16 are respectively grooved with input rotating blades 17 and output rotating blades 18. The input rotating blades 17 and the output rotating blades 18 are respectively rotatably connected to the input gear 15 and the output gear 16 through rotating shafts. Particularly, the number of blades of the input rotating blades 17 is less than that of the output rotating blades 18, and the blades of the input rotating blades 17 and the output rotating blades 18 are both arranged obliquely in the same inclined direction. When the user exhales, the exhaled gas enters the fixed cylinder 201 through the mask 1, driving the input rotating blades 17 to rotate. Since the number of blades of the input rotating blades 17 is less, the frequency of the input rotating blades 17 driven by the gas flow is lower than that of the output rotating blades 18. Thus, when the air flow passes through the output rotating blades 18, an overall acceleration effect will be produced. Also, because the input gear 15 meshes with the first driven gear 13, at this time, the accelerated rotation of the overall input rotating blades 17 and output rotating blades 18 will generate a negative pressure to assist the user in exhaling. The generation of this suction force helps to affect the sputum adhering to the patient's respiratory tract and is beneficial to the realization of the expectorant function.

[0056] When the user inhales, the external air enters the fixed cylinder 201 through the folding cylinder 202, driving the output rotating blades 18 to rotate. Since the number of blades of the output rotating blades 18 is more, its rotation speed is relatively slow, but the generated torque is large enough to drive the output gear 16 and the second driven gear 14 to rotate. The second driven gear 14 drives the first driven gear 13 to rotate in the reverse direction through the transmission rod 12, and then drives the input gear 15 and the input rotating blades 17 to rotate in the reverse direction. At this time, the reverse negative pressure generated by the rotation of the input rotating blades 17 assists the user in expanding the chest and inhaling, helping the lungs to expand. Since the whole process is dynamically adjusted, it will not cause damage to the user's lungs due to excessive expansion.

[0057] The wearing part, such as Figure 1As shown, the wearing part sequentially includes a chest cover 4 and an abdominal cover 5 from top to bottom. The abdominal cover 5 is integrally formed with the chest cover 4. A fixed strap assembly 6 is provided on the abdominal cover 5. The fixed strap assembly 6 includes two fixed straps respectively fixedly connected to both sides of the abdominal cover 5. The two fixed straps can be detachably connected through a contraction buckle. A back strap assembly 7 is provided on the chest cover 4. The back strap assembly 7 includes back straps respectively fixedly connected to both sides of the chest cover 4. When the user breathes, the chest cover 4 and the abdominal cover 5 are worn on the body, serving as the main supporting components for breathing assistance and realizing the portability of breathing assistance.

[0058] A connection channel 8 and a vibration channel 9 are formed inside the chest cover 4. Combining Figure 2 、 Figure 3 and Figure 4 As shown, an airbag 10 is embedded in the abdominal cover 5. One end of the connection channel 8 is connected to the folding cylinder 202 through a trachea, and the other end of the connection channel 8 is connected to the airbag 10 through a trachea. One end of the vibration channel 9 is connected to the middle of the connection channel 8, and the other end of the vibration channel 9 penetrates through the side wall of the chest cover 4 and communicates with the outside of the chest cover 4. A vibration expectoration component 11 is provided in the vibration channel 9. The vibration expectoration component 11 includes a spring piece 1101. One end of the spring piece 1101 penetrates through the side wall of the vibration channel 9 and extends to the outside of the chest cover 4 and an elastic semi-cylinder 1102 is welded to it. The spring piece 1101 is hinged to the vibration channel 9 at the penetration point. The end of the spring piece 1101 away from the semi-cylinder 1102 is in contact with the inner side wall of the vibration channel 9.

[0059] Taking two different breathing conditions of the user as examples for illustration: Firstly, when the user's breathing mode is mainly chest breathing, the abdominal displacement of the user is relatively small, which means that the variable volume of the airbag 10 in the abdominal cover 5 is limited, and the resistance of the airflow flowing from the connection channel 8 to the airbag 10 is large, resulting in more exhaled gas of the user flowing through the connection channel 8 to the vibration channel 9. In this case, the continuous airflow impacts the spring piece 1101. Since the spring piece 1101 has certain elasticity, the spring piece 1101 will deform and vibrate under the action of this impact force. This vibration drives the semi-cylinder 1102 to vibrate the user's chest area. This vibration will be transmitted to the airway through the sternum, helping to loosen and move the viscous secretions in the airway, so that the sputum can be more easily expectorated, realizing the effect of using the energy of the user's own exhalation to vibrate and assist in expectoration during the process of assisting the user's breathing.

[0060] Secondly, when the user's breathing pattern is mainly abdominal breathing, the abdominal undulation displacement of the user is relatively large, while the thoracic undulation displacement decreases. At this time, more of the gas exhaled by the user flows into the airbag 10 through the connection channel 8. At this time, the inflation of the airbag 10 corresponds to the upward movement of the user's diaphragm during exhalation. The supporting force generated on the user's abdomen by the increase in the volume of the airbag 10 assists the movement of the user's diaphragm. In addition, the increased volume of the airbag 10 is proportional to the amount of gas exhaled by the user, that is, the more gas the user exhales, the larger the increased volume of the airbag 10, realizing dynamic assistance adapted to the user's tidal volume and improving the treatment efficiency of respiratory assistance.

[0061] Since during abdominal breathing, the relative displacement between the user's chest area and the chest cover 4 is reduced compared to chest breathing, but not completely eliminated. Therefore, to improve the respiratory assistance for the user during abdominal breathing, specifically as Figure 3 shown, the inner wall of the vibration channel 9 is designed with a limiting groove 19 with an arc structure. The limiting groove 19 corresponds to the fitting position of the spring piece 1101 and the inner wall of the vibration channel 9. Since both the chest cover 4 and the abdominal cover 5 are elastic, when the chest cover 4 fits with the chest area, the spring piece 1101 will snap into the limiting groove 19, thereby reducing the gas flowability in the vibration channel 9 at this time, that is, it is beneficial to increase the stability of the auxiliary effect of the airbag 10 during abdominal breathing. Only when a relatively large relative displacement occurs between the chest cover 4 and the chest area, the spring piece 1101 disengages from the side wall of the limiting groove 19, and at this time, the air flow can pass through the limiting groove 19 to cause the spring piece 1101 to undergo reciprocating deformation. In addition, the limiting groove 19 with an arc structure provides a directional channel for the gas to pass through the spring piece 1101, increasing the probability of deformation of the spring piece 1101 and improving the stability of the expectoration effect of the semi-cylinder 1102 during chest breathing.

[0062] As Figure 7 shown, the chest and abdomen movement pattern recognition unit includes a displacement sensor, a pressure sensor, and a breathing pattern evaluation module. The displacement sensor is adhesively fixed to the outer wall of the chest cover 4. The displacement sensor is preferably a flexible LVDT displacement sensor, and the displacement sensor is used to detect the vertical displacement between the chest cover 4 and the thoracic cavity. The pressure sensor is adhesively fixed to the outer wall of the abdominal cover 5. The pressure sensor is preferably a piezoresistive thin film sensor, and the pressure sensor is used to collect the pressure distribution data between the abdominal cover 5 and the user's abdomen. When the user performs abdominal breathing, the diaphragm presses downward, causing the abdomen to expand, and the resistance value of the pressure sensor changes with the pressure.

[0063] The breathing pattern assessment module receives data signals collected by the displacement and pressure sensors and calculates the ratio of the rate of change of vertical chest displacement (ΔD) to the rate of change of pressure in the central abdominal area (ΔP). If the ratio exceeds 16 mm / kPa (e.g., rapid increase in chest displacement with minimal change in abdominal pressure), it is determined to be thoracic breathing. If the ratio is less than 0.5 mm / kPa (significant abdominal rise and fall with minimal chest displacement), it is determined to be abdominal breathing. All other cases are classified as mixed breathing. The breathing pattern data is then transmitted to subsequent units.

[0064] A pulmonary function detection unit includes a flow sensor, an airbag 10 volume sensor, and a tidal volume calculation module; the flow sensor is adhered and fixed to the connection between the fixed cylinder 201 and the folding cylinder 202. The flow sensor is preferably a miniature hot wire flow meter. The flow sensor is used to monitor the airflow velocity in real time. The airbag 10 volume sensor is adhered and fixed to the inner wall of the airbag 10. The airbag 10 volume sensor is preferably a capacitive sensor. The airbag 10 volume sensor is used to collect the volume change value of the airbag 10.

[0065] The tidal volume calculation module is used to receive the user's expiratory airflow velocity and volume change values collected by the flow sensor and the airbag 10 volume sensor respectively, calculate the tidal volume using a weighted fusion algorithm of the airbag 10 volume (70% weight) and the flow integral (30% weight), and introduce temperature compensation to correct the error to eliminate flow measurement deviations caused by changes in the respiratory gas temperature. At the same time, the expiratory time constant is calculated based on the ratio of the airbag 10 volume to the peak flow rate to evaluate the recovery of the user's lung elastic recoil force.

[0066] The personalized training control unit includes a resistance adjustment member and a resistance adjustment module; the resistance adjustment member is fixedly connected to the rotation connection of the input gear 15 through a snap structure, and the resistance adjustment member is preferably a magnetorheological clutch;

[0067] The resistance adjustment module is used to receive breathing pattern data and tidal volume data, generate a dynamic parameter table based on the user's preset age, gender and medical history, and send different driving signals to the resistance adjustment component according to the dynamic parameter table; when the user is an elderly user, the resistance adjustment component is driven to reduce the basic resistance and produce a smooth resistance curve to avoid sudden load-induced respiratory muscle fatigue. When the user is a postoperative user, a driving signal is sent to adjust the resistance adjustment component to simulate the changes in deep breathing resistance and promote diaphragm strength recovery.

[0068] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of this invention.

Claims

1. An intelligent respiratory assistance system for pulmonary rehabilitation, characterized in that: include: The breathing part comprises a mask (1), the mask (1) is fixedly connected to a breathing cylinder (2), the breathing cylinder (2) comprises a fixed cylinder (201) and a folding cylinder (202), one end of the fixed cylinder (201) is fixedly connected to one side of the mask (1) and the other end thereof is fixedly connected to the folding cylinder (202), a one-way air valve (3) is provided on a side wall of the folding cylinder (202) away from the fixed cylinder (201), and an auxiliary component is provided in the fixed cylinder (201), and when a user exhales and inhales through the mask (1), the auxiliary component guides the flow of air in the fixed cylinder (201) according to the intensity of the user's exhalation and inhalation respectively; The wearing part includes, from top to bottom, an integrally formed chest cover (4) and an abdominal cover (5), both sides of the abdominal cover (5) are fixedly connected with a fixing strap assembly (6) for fixing the abdominal cover (5), the chest cover (4) is provided with a shoulder strap assembly (7) for fixing the chest cover (4), a connecting channel (8) and a vibration channel (9) are provided in the chest cover (4), and an air bag (10) for assisting the user's diaphragm movement is embedded in the abdominal cover (5), and the two ends of the connecting channel (8) are respectively connected to the telescopic cylinder and the air bag ( 10) is connected, one end of the vibration channel (9) is connected to the middle of the connecting channel (8), and the other end of the vibration channel (9) passes through the side wall of the chest cover (4) and is connected to the outside of the chest cover (4), and a vibration expectorant component (11) for generating vibration to assist the user in expectorating is provided in the vibration channel (9). When the user exhales, the flow potential energy of the user's exhaled gas is utilized and according to the user's different breathing patterns, the airbag (10) and the expectorant component are driven respectively, and the assisting strength of the airbag (10) is proportional to the user's tidal volume; A chest and abdomen movement pattern recognition unit, the chest and abdomen movement pattern recognition unit includes a displacement sensor, a pressure sensor and a breathing pattern evaluation module, the displacement sensor is used to detect the vertical displacement between the chest cover (4) and the chest cavity, and the pressure sensor is used to collect pressure distribution data between the abdominal cover (5) and the user's abdomen; A breathing pattern evaluation module is used to receive data signals collected by the displacement sensor and the pressure sensor, analyze and generate the user's breathing pattern data, and then transmit the breathing pattern data to subsequent units; A pulmonary function detection unit, comprising a flow sensor, an airbag (10) volume sensor, and a tidal volume calculation module; the flow sensor is used to monitor the airflow velocity in real time, and the airbag (10) volume sensor is used to collect the volume change value of the airbag (10); a tidal volume calculation module for receiving the user's exhaled airflow velocity and volume change values collected by the flow sensor and the airbag (10) volume sensor respectively, calculating the user's breathing tidal volume through the airbag (10) volume and airflow velocity, and simultaneously evaluating the user's recovery status; Personalized training control unit, including a resistance adjustment element and a resistance adjustment module; The rotation resistance adjusting member is used to adjust the rotation resistance of the input gear (15); The resistance adjustment module is used to receive breathing pattern data and tidal volume data, generate a dynamic parameter table based on the user's preset age, gender and medical history, and send different drive signals to the resistance adjustment component according to the dynamic parameter table.

2. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 1, characterized in that: The auxiliary component comprises a transmission rod (12) connected in parallel rotation to the inner wall of the fixed cylinder (201); a first driven gear (13) close to the side of the mask (1) and a second driven gear (14) close to the side of the folding cylinder (202) are fixed on the transmission rod (12); the first driven gear (13) is meshed with an input gear (15); the second driven gear (14) is meshed with an output gear (16); the input gear (15) and the output gear (16) are both connected in rotation to the inner wall of the fixed cylinder (201); the surfaces of the input gear (15) and the output gear (16) are respectively grooved and connected in rotation to an input rotor blade (17) and an output rotor blade (18).

3. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 2, characterized in that: The diameter of the first driven gear (13) is smaller than the diameter of the second driven gear (14), and the diameter of the input gear (15) is larger than the diameter of the output gear (16).

4. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 3, characterized in that: The number of blades of the input rotor blade (17) is smaller than the number of blades of the output rotor blade (18).

5. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 4, characterized in that: The vibration expectorant assembly (11) comprises a spring sheet (1101) arranged in the vibration channel (9), one end of the spring sheet (1101) passes through the side wall of the vibration channel (9) and extends to the outside of the chest cover (4) and is fixedly connected to an elastic semicircular body (1102), the spring sheet (1101) and the vibration channel (9) are hinged at the penetration point, and the end of the spring sheet (1101) away from the semicircular body (1102) fits the inner wall of the vibration channel (9).

6. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 5, characterized in that: A limiting groove (19) is provided on the inner wall of the vibration channel (9), and the limiting groove (19) corresponds to the fitting position of the spring sheet (1101) and the inner wall of the vibration channel (9).

7. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 6, characterized in that: The limiting groove (19) is an arc-shaped structure.

8. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 7, characterized in that: The folding cylinder (202) is a composite structure of a memory alloy frame and a silicone material, and can be folded and stored with one hand.

9. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 8, characterized in that: In the breathing pattern evaluation module, the breathing pattern data is calculated by using displacement data to calculate the rate of change of vertical displacement of the chest cavity, and using pressure data to calculate the ratio of the rate of change of pressure in the central area of the abdomen; the breathing pattern is classified into thoracic breathing, abdominal breathing and mixed breathing according to the size of the ratio.

10. The intelligent respiratory assistance system for pulmonary rehabilitation according to claim 9, characterized in that: In the tidal volume calculation module, for the analysis of the user's recovery status, first, the peak flow rate in the volume change value is extracted, and the expiratory time constant is calculated by the ratio of the real-time volume of the air bag (10) to the peak flow rate. The recovery of the user's lung elastic recoil force is evaluated based on the expiratory time constant.

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