Intelligent respiration assisting system for lung rehabilitation

Abstract

The invention relates to the technical field of rehabilitation assistance, in particular to an intelligent breathing assistance system for lung rehabilitation, comprising: a breathing part, the breathing part comprising a breathing cylinder, the breathing cylinder comprising a fixed cylinder and a folding cylinder, the fixed cylinder being internally provided with an auxiliary assembly; the wearing part comprises a chest cover and an abdomen cover, a connecting channel and a vibration channel are formed in the chest cover, an air bag is embedded in the abdomen cover, and a vibration phlegm eliminating assembly is arranged in the vibration channel; the thoracico-abdominal movement mode recognition unit is used for detecting a breathing mode of a user; the lung function detection unit is used for calculating and detecting the tidal volume of a user; the personalized training control unit is used for adjusting breathing resistance according to the tidal volume and breathing modes, according to different breathing modes of users, the breathing assisting force is adjusted through kinetic energy of gas exhaled by the users, key parameters such as the tidal volume and the recovery condition are monitored in real time, the lung rehabilitation effect is further improved, and the lung rehabilitation effect is improved. And more accurate and effective breathing adjuvant therapy is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation assistance, 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 technologies, intelligent breathing assistance systems have gradually become a research hotspot in the field of pulmonary rehabilitation.

[0003] In the prior art, the patent document CN116889667A discloses a portable children's breathing assistance device, which includes a box body, a face mask and an exercise component. A pair of shoulder straps are arranged on one side of the box body. The exercise component includes a moving plate slidably arranged at the bottom end of the box body. A hydraulic rod is arranged on the moving plate. A connecting frame is arranged at the output rod end of the hydraulic rod. A rotating rod is arranged through the connecting frame. Connecting handles are arranged at both ends of the rotating rod. Two groups of fixing blocks are arranged on the moving plate. Pedals are slidably clamped on the two groups of fixing blocks. The pedals can be rotatably connected with the connecting handles. A first belt pulley is coaxially arranged on the rotating rod. A generator is arranged on the moving plate. A second belt pulley connected by a coupling is arranged at the input shaft end of the generator. A belt is arranged between the first belt pulley and the second belt pulley. In this invention, 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 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 assisting 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 assisting force, and it is difficult to achieve the effect of dynamically adjusting 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: A breathing part, the breathing part includes a face mask, the face mask is fixedly communicated with 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, and 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; 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, and a vibration expectoration component for generating vibration to assist the user in expectoration is provided in the vibration channel. When the user exhales, the potential energy of the flowing user 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; A chest and abdomen movement mode recognition unit, the chest and abdomen movement mode recognition unit includes a displacement sensor, a pressure sensor and a breathing mode evaluation module, the displacement sensor is used for detecting the vertical displacement between the chest cover and the chest cavity, and the pressure sensor is used for collecting the pressure distribution data between the abdominal cover and the user's abdomen; A breathing mode evaluation module, which is used for receiving the data signals collected by the displacement sensor and the pressure sensor, analyzing and generating the user's breathing mode data, and then transmitting the breathing mode data to the subsequent unit; 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 for real-time monitoring of the air flow velocity, and the air bag volume sensor is used for collecting the volume change value of the air bag; A tidal volume calculation module, which is used for receiving the user's exhaled air flow velocity and volume change value respectively collected by the flow sensor and the air bag volume sensor, calculating the tidal volume of the user's breathing through the air bag volume and the air flow velocity, and simultaneously evaluating the user's recovery situation; A personalized training control unit, including a rotation resistance adjusting part and a resistance adjusting module; A resistance adjusting module, which is used for receiving the breathing mode data and the tidal volume data, generating a dynamic parameter table in combination with the user's preset age, gender and medical history, and sending different driving signals to the rotation resistance adjusting part according to the dynamic parameter table.

[0007] The technical principle of the above scheme is as follows: when the user breathes through the mask, the exhaled gas first enters the breathing cylinder. In 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 to help the user perform lung rehabilitation more effectively. When the user exhales, the flow potential energy of the exhaled gas drives the expansion of the airbag, provides auxiliary movement for the diaphragm, and activates the vibration expectorant component at the same time, helping the user to expectorate through vibration to improve the breathing condition, and the effectiveness of the diaphragm auxiliary and expectorant 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 the displacement sensor and the pressure sensor. These data are 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 value in real time through the flow sensor and the airbag volume sensor. These data are used by the tidal volume calculation module to calculate the user's tidal volume and evaluate the user's recovery. Finally, the personalized training control unit generates personalized training parameters based on the user's breathing pattern data and tidal volume data, combined with the user's preset age, gender, medical history and other information. These parameters are applied to the breathing assistance process in real time through the resistance adjustment component and the resistance adjustment module.

[0008] The above scheme has the following beneficial effects: 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 the abdominal cover, and is equipped with adjustable fixed 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, which improves the user's freedom in rehabilitation training.

[0009] 2. This solution uses the flow potential energy of exhaled gas to drive the airbag to expand, assist the diaphragm movement, and activate the vibration expectorant component. The airbag volume sensor is linked to the tidal volume calculation module in real time to ensure that the assistance intensity is proportional to the user's actual breathing ability. This design does not require external energy, and directly drives the auxiliary function through the user's spontaneous breathing, achieving dynamic matching of the assistance intensity and the user's recovery progress, avoiding over-reliance or insufficient training.

[0010] 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 strength 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 provides differentiated assistance for different breathing patterns, optimizes the expectoration effect and diaphragm training efficiency, and achieves personalized breathing assistance effect.

[0011] 4. The rigid connection design between the chest cover and the abdominal cover enhances the stability of the device and reduces movement interference during respiratory assistance. At the same time, a displacement sensor is designed to detect chest displacement and a pressure sensor is designed to detect abdominal pressure distribution. Combined with the tidal volume calculation module, it comprehensively evaluates the respiratory pattern and the recovery of lung function. By fusing multi-dimensional data, the accuracy of respiratory pattern recognition is improved, providing a reliable basis for rehabilitation progress evaluation and parameter adjustment, and reducing the risk of misjudgment.

[0012] Furthermore, 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 blades and output blades are rotatably connected to the surfaces of the input gear and the output gear respectively by slots.

[0013] Beneficial effects: This design converts the airflow in the fixed cylinder into the rotational motion of gears through the transmission rod, and then drives the rotation of the input blades and the output blades. The meshing of the first driven gear with the input gear and the meshing of the second driven gear with the output gear achieve the transfer 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 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 blades to rotate to achieve inhalation assistance.

[0014] Furthermore, 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.

[0015] 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-increasing transmission mechanism can enhance the negative pressure generation efficiency of the output blades, enabling the negative pressure to quickly match the breathing rhythm, such as rapidly increasing pressure during inhalation, and reducing the probability of respiratory assistance lag.

[0016] Furthermore, the number of blades of the input blades is less than that of the output blades.

[0017] Beneficial effects: This design can optimize the distribution of airflow during respiration. Since the number of blades of the input blades is less, it can be better driven by the gas exhaled by the user, thus providing less resistance when the user exhales and enabling the user to exhale smoothly. In contrast, due to the larger number of blades of the output blades, it can more effectively provide negative pressure assistance for both exhalation and inhalation, improving the efficiency of the respiratory assistance system and ensuring the comfort and safety of the user during respiration.

[0018] Furthermore, the vibration expectoration component includes a spring piece disposed in the vibration channel. One end of the spring piece penetrates through the side wall of the vibration channel and extends to the outside of the chest cover, and an elastic semi-cylinder is fixedly connected thereto. The spring piece is hinged to the vibration channel at the penetration point, and the end of the spring piece away from the semi-cylinder fits against the inner side wall of the vibration channel.

[0019] Beneficial effects: This design realizes the function of vibration expectoration through the combination of the spring piece and the semi-cylinder. When the user exhales, the flowing potential energy of the exhaled gas drives the spring piece to vibrate, and then drives the semi-cylinder to vibrate in the vibration channel. This vibration can assist the user in expectorating phlegm and improving the breathing condition. At the same time, the design of the spring piece and the semi-cylinder makes the vibration expectoration component have high stability and durability, and can effectively provide respiratory assistance treatment for the user for a long time.

[0020] 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 piece and the inner wall of the vibration channel.

[0021] Beneficial effects: This design improves the stability and reliability of the vibration expectoration component through the setting of the limiting groove; the limiting groove can limit the displacement of the spring piece during vibration, prevent it from being damaged or disengaged from the vibration channel due to excessive vibration, and ensure that the spring piece can maintain its original vibration frequency and amplitude during long-term use, so as to continuously and effectively provide auxiliary treatment for the user's vibration expectoration.

[0022] Furthermore, the limiting groove is of an arc structure.

[0023] Beneficial effects: The arc-shaped limiting groove can better fit the vibration track of the spring piece, reduce the friction and resistance of the spring piece during vibration, and thus improve the vibration efficiency. In addition, the design of the arc-shaped limiting groove also sets a limit for the start of the vibration mechanism of the spring piece. Only when the vibration channel is not squeezed, that is, when the vibration channel is wide enough, the vibration is driven, so as to adjust the gas flow direction of the connection channel according to the breathing mode, and realize the automatic adjustment of the intensity and frequency of vibration expectoration according to the actual breathing condition of the user, providing more personalized and efficient respiratory assistance treatment for the user.

[0024] Furthermore, the folding cylinder body is a composite structure of a shape memory alloy skeleton and a silica gel material, and can be folded and stored with one hand.

[0025] Beneficial effects: The foldable 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 foldable cylinder to quickly return to the preset folded state after each use, facilitating carrying and storage. The silicone material provides good airtightness 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 one-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.

[0026] Furthermore, in the breathing pattern assessment 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.

[0027] Beneficial effects: Through precise data analysis, this breathing pattern assessment module can accurately judge the user's breathing pattern in real time, 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 breathing disorders, and formulating targeted rehabilitation plans. By continuously monitoring the breathing pattern, the system can promptly detect breathing abnormalities, reminding the user to adjust the breathing method or take necessary medical measures, thus effectively preventing the occurrence and development of respiratory diseases and further enhancing the pertinence and effectiveness of breathing assistance treatment.

[0028] 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.

[0029] Beneficial effects: Through precise airbag volume monitoring and peak flow rate analysis, 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 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, providing valuable clinical data for doctors to adjust 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.

[0030] 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 by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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; 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; Figure 3 In an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention Figure 2 An enlarged view of the vibration expectoration component at A in it; 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; 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; Figure 6 In an embodiment of the intelligent breathing assistance system for pulmonary rehabilitation of the present invention Figure 5 An enlarged view of the arrangement at the rotation groove at B in it; 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.

[0032] Reference numerals in the accompanying 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 rotor; 18, output rotor; 19, limit groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, 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 scope of protection of the present invention.

[0034] 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 to 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.

[0035] 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.

[0036] The following is a further detailed description through specific embodiments: Embodiment 1:

[0037] 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: 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 away 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 away 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.

[0038] A rotating groove is provided on the inner side wall of the fixed cylinder body 201. Specifically, in combination with Figure 5 and 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 body 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. The input gear 15 and the output gear 16 are both rotatably connected to the inner side wall of the fixed cylinder body 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 in an inclined manner with the same inclined direction. When the user exhales, the exhaled gas enters the fixed cylinder body 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. Therefore, when the air flow passes through the output rotating blades 18, an overall acceleration effect will be generated. 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 attached to the patient's respiratory tract, which is beneficial to the realization of the expectorant function.

[0039] When the user inhales, the external air enters the fixed cylinder body 201 through the folding cylinder body 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 harm to the user's lungs due to excessive expansion.

[0040] 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 shrinkage 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 as the main supporting components for breathing assistance, realizing the portability of breathing assistance.

[0041] A connection channel 8 and a vibration channel 9 are opened in 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 communicated with the folding cylinder 202 through a trachea, and the other end of the connection channel 8 is communicated with the airbag 10 through a trachea. One end of the vibration channel 9 is communicated with 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 to communicate 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 thereto. 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 fits against the inner side wall of the vibration channel 9.

[0042] Taking two different breathing conditions of the user as examples for explanation: First, 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 air flow from the connection channel 8 to the airbag 10 is relatively large, resulting in more of the user's exhaled gas flowing through the connection channel 8 to the vibration channel 9. In this case, the continuous air flow impacts the spring piece 1101. Since the spring piece 1101 has a 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 is 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.

[0043] Secondly, when the user's breathing pattern is mainly diaphragmatic 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 greater 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.

[0044] During diaphragmatic breathing, the relative displacement between the user's chest area and the chest cover 4 is reduced compared to thoracic breathing, but it does not completely disappear. Therefore, to improve the respiratory assistance for the user during diaphragmatic breathing, specifically as Figure 3 shown, an arc-shaped limiting groove 19 is provided on the inner wall of the vibration channel 9. 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 diaphragmatic breathing. Only when there is a large relative displacement 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 arc-shaped limiting groove 19 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 vibration and phlegm-dispelling effect of the semi-cylinder 1102 during thoracic breathing.

[0045] 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 chest 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 diaphragmatic breathing, the diaphragm presses down, causing the abdomen to expand, and the resistance value of the pressure sensor changes with the pressure; A breathing pattern evaluation module, which is used to receive the data signals collected by the displacement sensor and the pressure sensor, and calculate the ratio of the change rate of the vertical displacement of the chest cavity (ΔD) to the change rate of the pressure in the central area of the abdomen (ΔP). If the ratio exceeds 16 mm / kPa (such as a rapid increase in chest cavity displacement while the change in abdominal pressure is weak), it is determined as thoracic breathing; if the ratio is lower than 0.5 mm / kPa (significant abdominal undulation while the chest cavity displacement is tiny), it is determined as abdominal breathing, and the rest are classified as mixed breathing; then the breathing pattern data is transmitted to the subsequent unit.

[0046] A lung function detection unit, which includes a flow sensor, a balloon 10 volume sensor, and a tidal volume calculation module; the flow sensor is adhesively fixed at the connection between the fixed cylinder 201 and the folded cylinder 202. The flow sensor is preferably a micro hot-wire flowmeter, and the flow sensor is used to monitor the air flow velocity in real time. The balloon 10 volume sensor is adhesively fixed to the inner wall of the balloon 10. The balloon 10 volume sensor is preferably a capacitive sensor, and the balloon 10 volume sensor is used to collect the volume change value of the balloon 10; A tidal volume calculation module, which is used to receive the user's exhalation air flow velocity and volume change value collected by the flow sensor and the balloon 10 volume sensor respectively, calculate the tidal volume by using a weighted fusion algorithm of the balloon 10 volume (70% weight) and the flow integral (30% weight), and introduce temperature compensation to correct the error to eliminate the flow measurement deviation caused by the change in the temperature of the breathing gas. At the same time, calculate the expiratory time constant by the ratio of the balloon 10 volume to the peak flow to evaluate the recovery of the user's lung elastic recoil force.

[0047] A personalized training control unit, which includes a rotation resistance adjusting member and a resistance adjusting module; the rotation resistance adjusting member is fixedly connected to the rotation connection of the input gear 15 through a snap structure, and the rotation resistance adjusting member is preferably a magnetorheological clutch; The resistance adjusting module is used to receive the breathing pattern data and the tidal volume data, generate a dynamic parameter table in combination with the user's preset age, gender, and medical history, and send different drive signals to the rotation resistance adjusting member according to the dynamic parameter table; when the user is an elderly user, drive the rotation resistance adjusting member to reduce the basic resistance and generate a smooth resistance curve to avoid sudden load causing respiratory muscle fatigue. When the user is a postoperative user, send a drive signal to adjust the rotation resistance adjusting member to simulate the change in deep breathing resistance and promote the recovery of diaphragmatic strength.

[0048] Obviously, the above embodiments are only examples clearly described 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 list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An intelligent breathing assistance system for pulmonary rehabilitation, characterized in that, Comprising: A breathing part, the breathing part includes a face mask (1), the face mask (1) is fixedly connected to a breathing cylinder body (2), the breathing cylinder body (2) includes a fixed cylinder body (201) and a folding cylinder body (202), one end of the fixed cylinder body (201) is fixedly connected to one side of the face mask (1) and the other end thereof is fixedly connected to the folding cylinder body (202), a one-way air valve (3) is provided on the side wall of the folding cylinder body (202) away from the fixed cylinder body (201), an auxiliary component is provided in the fixed cylinder body (201), when the user exhales and inhales through the face mask (1), the auxiliary component guides the air flow in the fixed cylinder body (201) respectively according to the intensity of the user's exhalation and inhalation; A wearing part, the wearing part successively includes a chest cover (4) and an abdominal cover (5) which are integrally formed from top to bottom, fixing strap assemblies (6) for fixing the abdominal cover (5) are fixedly connected to both sides of the abdominal cover (5), a back strap assembly (7) for fixing the chest cover (4) is provided on the chest cover (4), a connection channel (8) and a vibration channel (9) are opened in the chest cover (4), and an airbag (10) for assisting the user's diaphragmatic movement is embedded in the abdominal cover (5), both ends of the connection channel (8) are respectively communicated with a telescopic cylinder body and the airbag (10), one end of the vibration channel (9) is communicated with the middle part of the connection channel (8), the other end of the vibration channel (9) penetrates through the side wall of the chest cover (4) and is communicated with the outside of the chest cover (4), a vibration expectoration assisting component (11) for generating vibration to assist the user in expectoration is provided in the vibration channel (9), when the user exhales, the airbag (10) and the expectoration assisting component are respectively driven by using the flow potential energy of the user's exhaled gas and according to the user's different breathing modes, and the assisting intensity of the airbag (10) is proportional to the user's tidal volume; A chest and abdomen movement mode recognition unit, the chest and abdomen movement mode recognition unit includes a displacement sensor, a pressure sensor and a breathing mode evaluation module, the displacement sensor is used for detecting the vertical displacement between the chest cover (4) and the chest cavity, and the pressure sensor is used for collecting the pressure distribution data between the abdominal cover (5) and the user's abdomen; A breathing mode evaluation module, which is used for receiving the data signals collected by the displacement sensor and the pressure sensor, analyzing and generating the user's breathing mode data, and then transmitting the breathing mode data to the subsequent unit; A lung function detection unit, the lung function detection unit includes a flow sensor, an airbag (10) volume sensor and a tidal volume calculation module; the flow sensor is used for monitoring the air flow velocity in real time, and the airbag (10) volume sensor is used for collecting the volume change value of the airbag (10); A tidal volume calculation module, which is used for receiving the user's exhaled air flow velocity and volume change value respectively collected by the flow sensor and the airbag (10) volume sensor, calculating the tidal volume of the user's breathing by using the airbag (10) volume and the air flow velocity, and simultaneously evaluating the user's recovery condition; A personalized training control unit, including a rotation resistance adjusting part and a resistance adjusting module; The rotation resistance adjusting part is used for adjusting the rotation resistance of the input gear (15); The resistance adjustment module is used to receive respiratory mode data and tidal volume data, generate a dynamic parameter table by combining the user's preset age, gender, and medical history, and send different drive signals to the transfer resistance adjustment component according to the dynamic parameter table.

2. The intelligent breathing assistance system for pulmonary rehabilitation according to claim 1, characterized in that, The auxiliary component includes a transmission rod (12) rotatably connected in parallel to the inner side wall of the fixed cylinder body (201). A first driven gear (13) near the mask (1) and a second driven gear (14) near the folding cylinder body (202) are sleeved and fixed on the transmission rod (12). The first driven gear (13) meshes with an input gear (15), and the second driven gear (14) meshes with an output gear (16). The input gear (15) and the output gear (16) are both rotatably connected to the inner side wall of the fixed cylinder body (201). Input rotating blades (17) and output rotating blades (18) are respectively rotatably connected to the surfaces of the input gear (15) and the output gear (16) through grooves.

3. The intelligent breathing assistance system for pulmonary rehabilitation according to claim 2, wherein, 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).

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

5. The intelligent breathing assistance system for pulmonary rehabilitation according to claim 4, characterized in that, The vibration expectoration component (11) includes a spring piece (1101) arranged in the vibration channel (9). 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 fixedly connected thereto. The spring piece (1101) is hinged to the vibration channel (9) at the penetration position. The end of the spring piece (1101) away from the semi-cylinder (1102) fits against the inner side wall of the vibration channel (9).

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

7. The intelligent breathing assistance system for pulmonary rehabilitation according to claim 6, wherein, The limiting groove (19) is an arc-shaped structure.

8. The intelligent breathing assistance system for pulmonary rehabilitation according to claim 7, wherein, The folding cylinder body (202) is a composite structure of a shape memory alloy skeleton and a silica gel material, and can be folded and stored with one hand.

9. The intelligent breathing assistance system for pulmonary rehabilitation according to claim 8, wherein, In the respiratory mode evaluation module, for the calculation of respiratory mode 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 respiratory mode is classified into thoracic breathing, abdominal breathing, and mixed breathing according to the magnitude of this ratio.

10. The intelligent breathing assistance system for pulmonary rehabilitation according to claim 9, wherein 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 (10) 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.

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