Bidirectional limb training device for chronic kidney disease rehabilitation

Abstract

The invention relates to the technical field of medical rehabilitation equipment, and discloses a bidirectional limb training device for rehabilitation of chronic nephropathy, which comprises a bottom frame, sliding rails are mounted on two sides of the bottom frame, a seat is mounted at the top of the bottom frame, a second sliding seat is slidably arranged between the two sliding rails, and the second sliding seat is positioned behind the seat. A water tank is installed at the rear ends of the two sliding rails, a first water pump is installed on an output pipe on the weighting box, one end of a first hose is installed at the output end of the first water pump, the other end of the first hose is connected to a water inlet in the top of the water tank, and a second water pump is installed on an output pipe on the water tank. By monitoring the edema, the blood pressure and the heart rate in real time, the training intensity is intelligently adjusted, the training individuation and safety are improved, the cardiovascular monitoring function is integrated to ensure safety, an alarm is given or training is suspended in time when abnormity occurs, and the massage function after training effectively relieves the edema, promotes blood circulation, accelerates rehabilitation and improves the comfort degree.

Description

Technical Field

[0001] The invention relates to the technical field of medical rehabilitation equipment, in particular to a bidirectional limb training device for chronic kidney disease rehabilitation. Background Art

[0002] Patients with chronic kidney disease often experience varying degrees of physical decline during the course of the disease, especially atrophy of limb muscles, reduced mobility, and lower limb edema. These changes not only affect the patient's quality of life, but also further increase the metabolic and circulatory burden brought by the disease. Limb training plays a key role in the rehabilitation process. Its core significance lies in improving the patient's exercise endurance and limb function through systematic and continuous muscle stimulation, while promoting the return of blood and lymph to a certain extent, which helps to alleviate the problem of fluid retention caused by renal dysfunction.

[0003] However, the current equipment used for this type of rehabilitation training has some limitations that are difficult to ignore in practical applications. Most equipment design ideas still remain on a unified standard, and there is a lack of dynamic adjustment mechanism for training intensity. For patients with frequent fluctuations in edema, such a rigid setting can easily cause a mismatch between training load and actual tolerance, which can neither guarantee training results nor easily cause excessive fatigue or even potential injuries.

[0004] In addition, current equipment generally does not pay enough attention to changes in vital signs during training. Although some products are equipped with basic heart rate or blood pressure monitoring functions, they are mostly static records and cannot cover the entire training cycle. If a patient has sudden abnormal heart rate or blood pressure fluctuations during training, the device itself cannot identify them in time, let alone provide intervention prompts, which leaves obvious hidden dangers in rehabilitation safety.

[0005] Another issue that is easily overlooked is the recovery phase after training. After completing heavy-load exercise, patients often experience edema in the calf area, muscle soreness, and other reactions. Unfortunately, most current equipment only focuses on the training process, and lacks a systematic design for post-training relief support, so patients are often in a "finished, finished" state. This not only affects the quality of recovery, but may also slow down the overall rehabilitation progress. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a bidirectional limb training device for chronic kidney disease rehabilitation, which solves the problems of difficulty in adjusting the training intensity, lack of safety monitoring of the process and insufficient recovery after training in chronic kidney disease patients during rehabilitation training.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A two-way four-limb training device for the rehabilitation of chronic kidney disease, including a chassis, on both sides of which slide rails are installed. A seat is installed on the top of the chassis. A second sliding seat slides between the two slide rails. The second sliding seat is located behind the seat. A weight box is installed on the top of the second sliding seat. A water tank is installed at the rear ends of the two slide rails. A first water pump is installed on the outlet pipe of the weight box. One end of a hose is installed at the output end of the first water pump, and the other end is connected to the water inlet at the top of the water tank. A second water pump is installed on the outlet pipe of the water tank. One end of a second hose is installed at the output end of the second water pump, and the other end is connected to the water inlet at the top of the weight box. A frame is installed at the front ends of the two slide rails. An integrated four-limb monitoring system is installed on the processor inside the frame, which is used to dynamically adjust the four-limb training intensity by monitoring the patient's blood pressure, heart rate and edema in real time. A display screen is installed at one end of the top of the frame facing the seat. In the display screen, massage mechanisms are installed on both sides of the frame, which are used to massage the patient's calves after training to reduce edema. A first sliding seat slides between the two slide rails. The first sliding seat is located in front of the seat. Two connecting seats are installed on the front side of the bottom of the first sliding seat. A collar is sleeved in the middle of the two connecting seats. One end of a first pull rope is connected to the outside of the collar, and the other end is connected to the second sliding seat. A foot fixing component is arranged on the top of the first sliding seat, which is used for the patient's leg to drive the first sliding seat to slide between the two slide rails, so as to achieve the purpose of leg training. Arm training components are installed on the side walls of the two slide rails. Two measuring components are installed on both sides of the frame, which are used to synchronously monitor edema, blood pressure and heart rate when the patient is performing four-limb training.

[0008] Preferably, the massage mechanism includes an adjustment component and a soothing component. The adjustment component is used to control the soothing component to move above the patient's leg. The soothing component is used to massage the patient's leg to reduce edema. The adjustment component includes a movable frame. One end of the movable frame rotates on the outer wall of the frame, and an adjustment rod one slides in the middle of the other end. A plurality of first through holes penetrate through the middle of the other end of the movable frame. A tightening bolt one penetrates through one of the first through holes, and the outer wall of the tightening bolt one is threaded in the threaded hole on the outer wall of the adjustment rod one.

[0009] Preferably, the massage component includes an adjustment frame. The middle of the adjustment frame rotates at the bottom of the adjustment rod one. Arc-shaped plates are installed on both sides of the adjustment frame. A plurality of groups of massage heads rotate on the arc-shaped plates. A first motor is connected to the end of each massage head.

[0010] Preferably, the sole fixing assembly includes two mounting plates, a connecting rod is mounted between the two mounting plates, pedals are rotatably mounted on both sides of the outer wall of the connecting rod, a plurality of fixing straps are mounted on both sides of the two pedals, fixing seats are mounted on both sides of the top of the first sliding seat, an electric telescopic rod is rotatably mounted on the top of each fixing seat, the output end of the electric telescopic rod is connected to the pedal through a rotating shaft, a movable seat is rotatably mounted on the bottom of each fixing seat, one end of a first spring is mounted on the outer wall of the movable seat, and the other end is mounted on the pedal.

[0011] Preferably, the arm training assembly includes a movable arm, the bottom of the movable arm is rotatably mounted on the outer wall of the sliding rail, a movable arm slides inside the movable arm, a handle is fixed to the top of the movable arm, one end of a second pulling rope is connected to the outer wall of the movable arm, a side plate is mounted on the outer wall of the sliding rail, a first pulley and a second pulley are rotatably mounted on the outer wall of the side plate, and the other end of the second pulling rope passes through the first pulley and the second pulley and is connected to the second sliding seat.

[0012] Preferably, a plurality of second through holes are penetrated through the middle of the movable arm, a second tightening bolt is penetrated through one of the second through holes, and the outer wall of the second tightening bolt is threadedly connected to a threaded hole in the outer wall of the movable arm.

[0013] Preferably, the first pulling rope penetrates through the middle of the convex block on the outer wall of the side plate, a third spring is sleeved on the outer wall of the first pulling rope, one end of the third spring is connected to the middle of the convex block on the outer wall of the side plate, and the other end is connected to the outer wall of the second sliding seat. A second spring is sleeved on the outer wall of the second pulling rope, one end of the second spring is close to the outer part of the first pulley, and the other end is connected to the outer wall of the second sliding seat.

[0014] Preferably, the measuring assembly includes an air pump, the air pump is externally mounted in the frame housing, one end of an air pipe is connected to the output end of the air pump, the other end is connected to an airbag, a pressure sensor is arranged outside the airbag, a cuff is wrapped outside the airbag and the pressure sensor, and a PPG sensor is arranged on the outer wall of the cuff.

[0015] Preferably, the limb monitoring system includes: A data acquisition module for real-time collecting the blood pressure, heart rate and edema data of the patient and transmitting them to the system for analysis; A data analysis and processing module for analyzing the collected data and calculating the most suitable training intensity and adjustment plan; A control instruction issuing module for issuing control instructions according to the analysis results and adjusting the operations of the first water pump and the second water pump to adjust the training intensity; A health monitoring and alarm module for monitoring the blood pressure and heart rate of the patient, and issuing an alarm and prompting to stop training when abnormal; A massage control module for controlling the operation of the massage mechanism after the training to promote blood circulation and reduce edema; A display and operation interface module for providing real-time health data, training intensity, and control instruction feedback to patients and medical staff, and allowing interactive operations.

[0016] The present invention provides a two-way four-limb training device for the rehabilitation of chronic kidney disease, having the following beneficial effects: 1. By real-time monitoring of the patient's edema degree, the system can flexibly adjust the water volume of the weight box according to the edema level, thereby changing the training load, achieving the effect of intelligently adjusting the training intensity according to the individual edema situation. Compared with the fixed-intensity training scheme in the prior art, this method effectively avoids the possible injuries caused by excessive training load when the patient has severe edema, and improves the personalization and safety of the rehabilitation training.

[0017] 2. By integrating the real-time monitoring functions of heart rate and blood pressure, the present invention can continuously detect cardiovascular data during the patient's training process and issue an alarm or automatically pause the training in case of abnormalities. This function greatly enhances the safety during the training process, ensures that the patient can obtain timely treatment in any emergency situation, and avoids accidents in high-risk situations compared with the traditional training equipment that cannot monitor the cardiovascular situation in real time, making the training safer and more reliable.

[0018] 3. After the training is completed, the present invention automatically activates the massage mechanism to perform soothing massage on the patient's calves to help reduce edema. Compared with the traditional method without effective recovery measures after training, the present invention can relieve edema in time after training, promote blood circulation, reduce the patient's discomfort, accelerate the rehabilitation process, and improve the overall training effect and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic diagram of the bottom structure of the device of the present invention; Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is a schematic diagram of the first drawstring of the present invention; Figure 5 is Figure 1 an enlarged view of part B in Figure 6 is a schematic diagram of the massage mechanism of the present invention; Figure 7 is a schematic diagram of the measurement component of the present invention; Figure 8 is a schematic diagram of the internal structure of the sleeve of the present invention; Figure 9 is a framework diagram of the system of the present invention.

[0020] Among them, 1. chassis; 2. slide rail; 3. seat; 4. first sliding seat; 5. connecting seat; 6. collar; 7. first pull rope; 8. second sliding seat; 9. weight box; 10. first water pump; 11. first hose; 12. water tank; 13. second water pump; 14. second hose; 15. mounting plate; 16. connecting rod; 17. foot pedal; 18. fixed seat; 19. electric telescopic rod; 20. movable seat; 21. first spring; 22. fixing belt; 23. frame; 24. movable frame; 25. first adjusting rod; 26. first through hole; 27. first tightening bolt; 28. adjusting frame; 29. arc plate; 30. first motor; 31. massage head; 32. movable arm; 33. moving arm; 34. second through hole; 35. handle; 36. second pull rope; 37. side plate; 38. first pulley; 39. second pulley; 40. air pump; 41. air pipe; 42. sleeve; 43. display screen; 44. airbag; 45. pressure sensor; 46. PPG sensor; 47. second spring; 48. third spring; 49. second tightening bolt. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Please refer to the appendix Figure 1 - appendix Figure 4, an embodiment of the present invention provides a two-way four-limb training device for chronic kidney disease rehabilitation, including a chassis 1. Slide rails 2 are installed on both sides of the chassis 1. A seat 3 is installed on the top of the chassis 1. A second sliding seat 8 slides between the two slide rails 2. The second sliding seat 8 is located behind the seat 3. A weight box 9 is installed on the top of the second sliding seat 8. A water tank 12 is installed at the rear ends of the two slide rails 2. A first water pump 10 is installed on the output pipe of the weight box 9. One end of a first hose 11 is installed at the output end of the first water pump 10, and the other end is connected to the water inlet at the top of the water tank 12. A second water pump 13 is installed on the output pipe of the water tank 12. One end of a second hose 14 is installed at the output end of the second water pump 13, and the other end is connected to the water inlet at the top of the weight box 9. A frame 23 is installed at the front ends of the two slide rails 2. An integrated four-limb monitoring system is integrated on the processor in the frame 23, which is used to dynamically adjust the four-limb training intensity by real-time monitoring of the patient's blood pressure, heart rate and edema conditions. A display screen 43 is installed at one end of the top of the frame 23 facing the seat 3. In the display screen 43, massage mechanisms are installed on both sides of the frame 23, which are used to massage the patient's calves after training to reduce edema. A first sliding seat 4 slides between the two slide rails 2. The first sliding seat 4 is located in front of the seat 3. Two connecting seats 5 are installed on the front side of the bottom of the first sliding seat 4. A collar 6 is sleeved in the middle of the two connecting seats 5. One end of a first pull rope 7 is connected to the outside of the collar 6, and the other end is connected to the second sliding seat 8. A foot fixing assembly is arranged on the top of the first sliding seat 4, which is used for the patient's leg to drive the first sliding seat 4 to slide between the two slide rails 2, so as to achieve the purpose of leg training. Arm training components are installed on the side walls of the two slide rails 2. Two measuring components are installed on both sides of the frame 23, which are used to synchronously monitor edema, blood pressure and heart rate when the patient is performing four-limb training.

[0023] The arm training component includes a movable arm 32. The bottom of the movable arm 32 rotates on the outer wall of the slide rail 2. A moving arm 33 slides inside the movable arm 32. A handle 35 is fixed on the top of the moving arm 33. One end of a second pull rope 36 is connected to the outer wall of the movable arm 32. A side plate 37 is installed on the outer wall of the slide rail 2. A first pulley 38 and a second pulley 39 rotate on the outer wall of the side plate 37. The other end of the second pull rope 36 passes through the first pulley 38 and the second pulley 39 and is connected to the second sliding seat 8.

[0024] The first pull rope 7 passes through the middle of the convex block on the outer wall of the side plate 37. A third spring 48 is sleeved on the first pull rope 7. One end of the third spring 48 is connected to the middle of the convex block on the outer wall of the side plate 37, and the other end is connected to the outer wall of the second sliding seat 8. A second spring 47 is sleeved on the second pull rope 36. One end of the second spring 47 is close to the outside of the first pulley 38, and the other end is connected to the outer wall of the second sliding seat 8.

[0025] Specifically, the patient first sits on the seat 3, and then the medical staff wears the measurement component and the foot fixing component for the patient. The measurement component pre-measures the limb edema condition of the patient, and the measured data is transmitted to the limb monitoring system. After data analysis, the edema level of the patient (such as mild, moderate, severe) is judged, and the training intensity is adjusted according to the edema level. The system control instruction issuing module controls the water pump two 13 to pump the water in the water tank 12 into the weight box 9 through the hose two 14, and adjusts the water volume in the weight box 9. The heavier the edema, the system reduces the water volume in the weight box 9, reduces the training load, and avoids excessive stretching of the limb.

[0026] When the patient starts the tensile training, the measurement component starts to monitor the patient's heart rate and blood pressure in real time. Through the operation of the PPG sensor 46, the system can obtain the pulse waveform and continuously monitor the changing trends of the heart rate and blood pressure according to the optical principle (such as reflective or transmissive optoelectronic method). If during the training process, the system detects an abnormal increase in heart rate or abnormal blood pressure fluctuations, the system will immediately give feedback, such as alarm reminder, pause training or automatically adjust the training intensity to ensure the safety of the patient. During the training, the patient holds the handle 35 and pushes it back and forth for training, controlling the moving arm 33 to drive the movable arm 32 to swing. As the movable arm 32 swings back and forth, it will drive the second pull rope 36 to slide along the outside of the second pulley 39 and the first pulley 38. At the same time, the legs bend and straighten, driving the first sliding seat 4 to move back and forth along the two slide rails 2, synchronously pulling the first pull rope 7 to slide in the middle of the convex block on the outer wall of the side plate 37. As the second pull rope 36 and the first pull rope 7 move in displacement, they will synchronously drive the second sliding seat 8 to slide along the two slide rails 2. If it moves towards the seat 3, the second spring 47 and the third spring 48 will be squeezed and compressed, generating a reactive force of resilience, so as to facilitate the subsequent return of the second sliding seat 8, thus realizing the cyclic back-and-forth movement of the second sliding seat 8.

[0027] After the training is over, the medical staff can push the movable frame 24 to drive the massage component to move above the patient's calf. Subsequently, the massage component is controlled by the adjustment component to wrap the patient's calf. Then, the massage component is controlled to start through the display screen 43 to massage and soothe the patient's calf and reduce edema.

[0028] During the massage, for the convenience of the next use of the device, the water pump one 10 can be controlled to start through the display screen 43, so as to input the water in the weight box 9 into the water tank 12 through the hose one 11. If it is used for a long time, fresh water can be filled into the water tank 12 through the water inlet on the water tank 12 for use.

[0029] Throughout the process, both the patient and the medical staff can view the physiological data such as the edema level, training intensity, heart rate and blood pressure, as well as the system feedback in real time through the display screen 43 to ensure that the training intensity and health status are always properly adjusted.

[0030] Please refer to the attached Figure 1 and the attached Figure 6 , the massage mechanism includes an adjustment component and a soothing component. The adjustment component is used to control the soothing component to move above the patient's leg, and the soothing component is used to massage the patient's leg to reduce edema; The adjustment component includes a movable frame 24. One end of the movable frame 24 is rotatably connected to the outer wall of the frame 23, and a first adjustment rod 25 slides in the middle of the other end. A plurality of first through holes 26 penetrate through the middle of the other end of the movable frame 24. A tightening bolt 27 penetrates through one of the first through holes 26, and the outer wall of the tightening bolt 27 is threaded into the threaded hole on the outer wall of the first adjustment rod 25.

[0031] The massage component includes an adjustment frame 28. The middle of the adjustment frame 28 is rotatably connected to the bottom of the first adjustment rod 25. Arc-shaped plates 29 are installed on both sides of the adjustment frame 28. A plurality of groups of massage heads 31 are rotatably connected to the arc-shaped plates 29. A first motor 30 is connected to the end of each massage head 31.

[0032] Specifically, after the training, the medical staff can push the movable frame 24 to drive the massage component to move above the patient's calf. Then, by rotating the tightening bolt 27, the fixation of the first adjustment rod 25 in the middle of the movable frame 24 is released. Then, according to the position of the patient's leg, the first adjustment rod 25 is moved to control the position movement of the adjustment frame 28, so that the arc-shaped plates 29 on both sides wrap the patient's calf. Then, the tightening bolt 27 is passed through a new first through hole 26 and screwed into the threaded hole on the first adjustment rod 25 to fix the height of the first adjustment rod 25. Then, the first motors 30 are controlled to start through the display screen 43, so that the plurality of groups of massage heads 31 massage and soothe the patient's calf to reduce edema.

[0033] Please refer to the attached Figure 5 , the sole fixing component includes two mounting plates 15. A connecting rod 16 is installed between the two mounting plates 15. Pedals 17 are rotatably connected to both sides of the outer wall of the connecting rod 16. A plurality of fixing straps 22 are installed on both sides of the two pedals 17. Fixed seats 18 are installed on both sides of the top of the first sliding seat 4. An electric telescopic rod 19 is rotatably connected to the top of each fixed seat 18. The output end of the electric telescopic rod 19 is connected to the pedal 17 through a rotating shaft. A movable seat 20 is rotatably connected to the bottom of each fixed seat 18. One end of a first spring 21 is installed on the outer wall of the movable seat 20, and the other end is installed on the pedal 17.

[0034] Specifically, when using the device, medical staff can assist in wearing the foot fixing component. The patient places the foot on the footrest 17, and then the medical staff fixes the patient's foot through the fixing straps 22 on both sides to prevent it from detaching from the footrest 17 during training, so that the lower limbs cannot be trained. To facilitate the comfort of the patient's foot during training, when placing the foot on the footrest 17, the medical staff or the patient can control the electric telescopic rod 19 through the display screen 43 to adjust the slope of the footrest 17 to be appropriate. When the slope of the footrest 17 is adjusted, it will drive the first spring 21 to deform, causing it to compress and generate a reaction force of rebound, thereby improving the stability of the footrest 17.

[0035] Please refer to the appendix Figure 4 , a plurality of second through holes 34 are provided through the middle of the movable arm 32. A tightening bolt 49 is provided through one of the second through holes 34, and the outer wall of the tightening bolt 49 is threadedly connected to the threaded hole in the outer wall of the movable arm 33.

[0036] Specifically, during training, the patient can adjust the handle 35 to the most comfortable grasping height according to the length of their own arm. The fixing of the movable arm 33 in the movable arm 32 can be released by rotating the tightening bolt 49. Then, move the movable arm 33. After adjusting the handle 35 to the most suitable grasping height, pass the tightening bolt 49 through the new second through hole 34 and screw it into the threaded hole on the movable arm 33 to complete the fixing of the movable arm 33 after adjustment.

[0037] Please refer to the appendix Figure 7 - appendix Figure 8 , the measuring component includes an air pump 40. The air pump 40 is externally installed in the housing of the frame 23. One end of the output end of the air pump 40 is connected to one end of an air pipe 41, and the other end is connected to an airbag 44. A pressure sensor 45 is provided outside the airbag 44. The airbag 44 and the pressure sensor 45 are wrapped with a cuff 42, and a PPG sensor 46 is provided on the outer wall of the cuff 42.

[0038] Specifically, after the patient sits on the seat 3, the four cuffs 42 are successively worn on the patient's limbs and firmly fixed using the letter Velcro on the cuffs 42. Subsequently, the air pump 40 is activated, and the gas enters the airbag 44 inside the cuff 42 through the trachea 41, causing it to expand. The expanded airbag 44 generates an external pressure that acts on the user's limbs, wrapping and pressing the patient's limbs. As the airbag 44 continues to inflate and the external pressure gradually increases, the pressure sensor 45 continuously collects the relationship between the pressure of the airbag 44 and the limb response. The "pressure feedback" of the limb under the action of the inflated airbag 44 reflects the tightness and moisture content of the limb tissue, thereby determining whether the patient has edema and the degree of edema. The collected pressure change data is transmitted into the system, and the algorithm determines the patient's edema level (such as mild, moderate, or severe). Different levels reflect the degree of fluid retention in the patient's limbs and will significantly affect the training tolerance.

[0039] After the patient starts the tensile training, the measurement component continuously monitors his physiological state: The PPG sensor 46 works: Through the optical principle (generally the reflective or transmissive optoelectronic method), this sensor continuously monitors the patient's pulse waveform, thereby obtaining the trends of heart rate and blood pressure in real time.

[0040] If a warning signal of abnormal increase in heart rate or abnormal fluctuation in blood pressure is monitored during the training process, the system will immediately give feedback, such as issuing a reminder, pausing the training, or adjusting the training intensity.

[0041] Please refer to the appendix Figure 9 , the limb monitoring system includes: A data acquisition module, which is used to continuously collect the patient's blood pressure, heart rate, and edema data and transmit them to the system for analysis; A data analysis and processing module, which is used to analyze the collected data and calculate the most suitable training intensity and adjustment plan; A control instruction issuing module, which is used to issue control instructions according to the analysis results and adjust the operations of the first water pump 10 and the second water pump 13 to adjust the training intensity; A health monitoring and alarm module, which is used to monitor the patient's blood pressure and heart rate and issue an alarm and prompt to stop the training when abnormal; A massage control module, which is used to control the operation of the massage mechanism after the training ends to promote blood circulation and reduce edema; A display and operation interface module, which is used to provide real-time health data, training intensity, and control instruction feedback for the patient and medical staff and allow interactive operations.

[0042] In this embodiment, the data acquisition module is used to continuously monitor the state of the patient's limbs, mainly including three-dimensional indicators of blood pressure, heart rate, and limb edema degree. Specifically: In a possible implementation, the monitoring of blood pressure and heart rate relies on a sensor based on the principle of Photoplethysmography (PPG). The sensor is set on the cuff 42, and after wearing, it is located at the patient's arm or calf. Preferably, a reflective structure is adopted, which has low power consumption and continuous monitoring capabilities.

[0043] In another implementation, edema detection is achieved based on the pressurization response method. Specifically, it includes controlling the air pump 40 to inflate the airbag 44, and the pressure sensor 45 set inside the cuff 42 collects the response curve of the pressure inside the airbag 44 changing with time in real time. By analyzing the pressure rise rate per unit time, the target pressure the time required to reach the required value, and the stable pressure fluctuation under the maintained pressure state,

[0044] where, represents the edema score, represents the time required for the airbag 44 to reach the target pressure P0 from the initial state, in seconds, represents the average rate of pressure rise, in kPa / s, represents the fluctuation amplitude during the target pressure holding period, in kPa, , , are weight coefficients set empirically and need to be determined through clinical data regression analysis.

[0045] Generally, the higher the value, the more obvious the degree of limb edema of the patient. Multiple grade boundary values (such as mild, moderate, severe) are set in the system for subsequent adaptive adjustment of the training load.

[0046] In this embodiment, while obtaining the above physiological parameters, the data analysis and processing module classifies and predicts the trend of the patient's current physiological state by setting a threshold interval and a trend change function. For example, when it is detected that the heart rate rise rate d(HR) / dt in multiple consecutive cycles exceeds the set value, or the blood pressure fluctuation exceeds the normal range, the system will generate a prediction label and transmit it to the control module.

[0047] As an option, the system can also introduce a neural network algorithm model to perform multi-dimensional learning on the collected data to judge the patient's tolerance during the training process. The input of such a model includes the maximum heart rate, training duration, edema score W, and maximum pulling force Fmax of the past N trainings, etc., and the output is the current training recommended intensity level L, which has a certain personalized adjustment ability.

[0048] In the present invention, after receiving the output information from the analysis module, the control instruction issuing module directly controls the action logics of the first water pump 10 and the second water pump 13. Among them: In a possible implementation manner, the second water pump 13 is used to inject the liquid in the water tank 12 into the weight box 9 to increase the training load; the first water pump 10 is used to extract the liquid in the reverse direction to reduce the load.

[0049] Specifically, the volume of the liquid in the weight box can be expressed as: ; wherein, is the current instantaneous flow rate of the pump, with the unit of mL / s, is the time, with the unit of s, is the initial volume, with the unit of mL.

[0050] The system outputs a target according to the W value and the training stage and controls the pump set to make the current tend to the target value. The flow rate regulation is achieved by controlling the motor speed through PWM modulation.

[0051] In this embodiment, the health monitoring and alarm module is responsible for the abnormal recognition and response logics during the training process. When the PPG module detects that the heart rate HR continuously exceeds the set upper limit value HRmax, or the systolic blood pressure SBP exceeds the limit range, the module generates an alarm signal and triggers the control module to suspend the load output. This logic can set the hard stop priority, which is superior to other control instructions In some embodiments, the alarm signal can be linked to the display interface module to issue a graphic or voice prompt, or can be transmitted to the display screen 43 through the data interface.

[0052] Specifically, the system can make the following judgments during the training: If HR(t) > HRmax and the duration > , then perform the following actions: Stop the training force feedback module; Reduce the pressure of the airbag 44 to the safety threshold; Activate the red alarm indication and display the prompt of "excessive heart rate"; Start the automatic massage preprocessing mode.

[0053] In this embodiment, the massage control module is activated after the training ends, and the massage component is moved to the target limb area through the movable frame 24.

[0054] In a common method, the massage pressure Pm is controlled at 0.5–1.5 kPa, and the cycle is set to alternate between 15–30 seconds to promote blood return and relieve edema.

[0055] The massage rhythm and intensity can be automatically adjusted according to the training intensity L value and the edema level of the patient. value.

[0056] In another implementation, the module supports manual parameter override, facilitating medical staff to modify the preset massage plan according to the actual situation.

[0057] In this embodiment, the display and operation interface module integrates a touch screen or a remote interaction interface for presenting real-time data including edema score, current training load, heart rate fluctuation curve, training time, massage progress, etc.

[0058] As an option, the module supports remote monitoring and parameter adjustment permission allocation for rehabilitation training under the remote guidance of nursing staff.

[0059] In some embodiments, the interface module also integrates a data export interface, supporting the storage of training log data or uploading it to a cloud database for subsequent medical evaluation or training effect analysis.

[0060] During the overall operation of the system, data interaction between modules is carried out through a bus structure or a wireless communication protocol to form a complete closed-loop control system. The core logic is centered around a processor, receiving various inputs such as physiological status, control feedback, training task instructions, etc. and generating corresponding output signals to ensure the safety and individual adaptability of the training process.

[0061] Working principle: When using the device of the present application to perform rehabilitation training on patients with chronic kidney disease, after the patient sits on the seat 3, four cuffs 42 are respectively worn on the patient's limbs in sequence and firmly fixed by the letter magic tapes on the cuffs 42. Then, the air pump 40 is started, and the gas enters the airbag 44 in the cuff 42 through the trachea 41, causing it to expand. The expanded airbag 44 generates an external pressure that acts on the patient's limbs, wrapping and compressing the patient's limbs. As the airbag 44 continues to inflate and the external pressure gradually increases, the pressure sensor 45 continuously collects the relationship between the pressure of the airbag 44 and the limb response. The "pressure feedback" of the limb under the action of the inflated airbag 44 reflects the tightness and moisture content of the limb tissue, thereby determining whether the patient has edema and the degree of edema. The collected pressure change data is transmitted into the system, and the algorithm determines the edema level of the patient (such as mild, moderate or severe). Different levels reflect the degree of fluid retention in the patient's limbs, which will significantly affect the training tolerance. The data analysis and processing module issues an instruction to the water pump two 13 according to the degree of edema, pumping the water in the water tank 12 into the weight box 9. The water volume in the weight box 9 directly affects the load of the tension device used by the patient during training. The heavier the edema, the lighter the weight added, so as to avoid overstretching the limbs. After the patient starts the tension training, the measurement component continuously monitors the patient's physiological state: The PPG sensor 46 works: Through the optical principle (generally the reflective or transmissive optoelectronic method), the sensor continuously monitors the patient's pulse waveform, thereby obtaining the real-time trends of heart rate and blood pressure changes.

[0062] If a warning signal of abnormal increase in heart rate or abnormal blood pressure fluctuation is detected during the training process, the system will immediately give feedback, such as issuing a reminder, pausing the training or adjusting the training intensity.

[0063] After the preparatory work is completed, the staff assists the patient to wear the foot fixing component. Then, the patient holds the handle 35 and pushes it back and forth, and the legs push back and forth to perform limb training. After the training is over, the medical staff can push the movable frame 24 to drive the massage component to move above the patient's calf. Then, the massage component is controlled by the adjustment component to wrap the patient's calf. Then, the massage component is started through the display screen to massage and soothe the patient's calf to reduce edema. Throughout the process, the patient and the medical staff can view the data and system feedback in real time through the display screen, including the edema level, training intensity, and whether the plan needs to be adjusted.

[0064] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-way four-limb training device for the rehabilitation of chronic kidney disease, comprising a chassis (1), characterized in that, On both sides of the chassis (1), slide rails (2) are installed. A seat (3) is installed on the top of the chassis (1). A second sliding seat (8) slides between the two slide rails (2). The second sliding seat (8) is located behind the seat (3). A weight box (9) is installed on the top of the second sliding seat (8). A water tank (12) is installed at the rear ends of the two slide rails (2). A first water pump (10) is installed on the output pipe of the weight box (9). One end of a first hose (11) is installed at the output end of the first water pump (10), and the other end is connected to the water inlet at the top of the water tank (12). A second water pump (13) is installed on the output pipe of the water tank (12). One end of a second hose (14) is installed at the output end of the second water pump (13), and the other end is connected to the water inlet at the top of the weight box (9). A frame (23) is installed at the front ends of the two slide rails (2). An integrated processor in the frame (23) is integrated with a limb monitoring system, which is used to dynamically adjust the limb training intensity by real-time monitoring of the patient's blood pressure, heart rate and edema conditions. A display screen (43) is installed at one end of the top of the frame (23) facing the seat (3). In the display screen (43), massage mechanisms are installed on both sides of the frame (23), which are used to massage the patient's calves to reduce edema after training. A first sliding seat (4) slides between the two slide rails (2). The first sliding seat (4) is located in front of the seat (3). Two connecting seats (5) are installed on the front side of the bottom of the first sliding seat (4). A collar (6) is sleeved in the middle of the two connecting seats (5). One end of a first pull rope (7) is connected to the outside of the collar (6), and the other end is connected to the second sliding seat (8). A sole fixing assembly is arranged on the top of the first sliding seat (4), which is used for the patient's leg to drive the first sliding seat (4) to slide between the two slide rails (2), so as to achieve the purpose of leg training. Arm training components are installed on the side walls of the two slide rails (2). Two measuring components are installed on both sides of the frame (23), which are used to synchronously monitor edema, blood pressure and heart rate when the patient is performing limb training.

2. The two-way four-limb training device for chronic kidney disease rehabilitation according to claim 1, wherein, The massage mechanism includes an adjustment component and a soothing component. The adjustment component is used to control the soothing component to move above the patient's leg. The soothing component is used to massage the patient's leg to reduce edema; The adjustment component includes a movable frame (24). One end of the movable frame (24) rotates on the outer wall of the frame (23), and a first adjustment rod (25) slides in the middle of the other end. A plurality of first through holes (26) penetrate through the middle of the other end of the movable frame (24). A first tightening bolt (27) penetrates through one of the first through holes (26), and the outer wall of the first tightening bolt (27) is threaded in the threaded hole on the outer wall of the first adjustment rod (25).

3. The two-way four-limb training device for chronic kidney disease rehabilitation according to claim 1, characterized in that, The massage component includes an adjustment frame (28). The middle of the adjustment frame (28) rotates at the bottom of the first adjustment rod (25). Arc-shaped plates (29) are installed on both sides of the adjustment frame (28). Multiple groups of massage heads (31) rotate on the arc-shaped plates (29). A first motor (30) is connected to the end of each massage head (31).

4. A two-way four-limb training device for chronic kidney disease rehabilitation according to claim 1, characterized in that, The sole fixing component includes two mounting plates (15). A connecting rod (16) is mounted between the two mounting plates (15). Pedals (17) are rotatably mounted on both sides of the outer wall of the connecting rod (16). A plurality of fixing straps (22) are mounted on both sides of the two pedals (17). Fixed seats (18) are mounted on both sides of the top of the first sliding seat (4). An electric telescopic rod (19) is rotatably mounted on the top of each fixed seat (18). The output end of the electric telescopic rod (19) is connected to the pedal (17) through a rotating shaft. An adjustable seat (20) is rotatably mounted on the bottom of each fixed seat (18). One end of a first spring (21) is mounted on the outer wall of the adjustable seat (20), and the other end is mounted on the pedal (17).

5. A two-way four-limb training device for chronic kidney disease rehabilitation according to claim 1, characterized in that, The arm training component includes a movable arm (32). The bottom of the movable arm (32) is rotatably mounted on the outer wall of the slide rail (2). A moving arm (33) slides inside the movable arm (32). A handle (35) is fixed to the top of the moving arm (33). One end of a second pull rope (36) is connected to the outer wall of the movable arm (32). A side plate (37) is mounted on the outer wall of the slide rail (2). A first pulley (38) and a second pulley (39) are rotatably mounted on the outer wall of the side plate (37). The other end of the second pull rope (36) passes through the first pulley (38) and the second pulley (39) and is connected to the second sliding seat (8).

6. The bilateral four-limb training device for chronic kidney disease rehabilitation according to claim 5, characterized in that, A plurality of second through holes (34) penetrate through the middle of the movable arm (32). A tightening bolt two (49) penetrates through one of the second through holes (34), and the outer wall of the tightening bolt two (49) is threadedly connected to a threaded hole in the outer wall of the moving arm (33).

7. A two-way four-limb training device for chronic kidney disease rehabilitation according to claim 5, characterized in that, The first pull rope (7) passes through the middle of the convex block on the outer wall of the side plate (37). A third spring (48) is sleeved on the outer part of the first pull rope (7). One end of the third spring (48) is connected to the middle of the convex block on the outer wall of the side plate (37), and the other end is connected to the outer wall of the second sliding seat (8). A second spring (47) is sleeved on the outer part of the second pull rope (36). One end of the second spring (47) is close to the outside of the first pulley (38), and the other end is connected to the outer wall of the second sliding seat (8).

8. A two-way four-limb training device for chronic kidney disease rehabilitation according to claim 1, characterized in that, The measuring component includes an air pump (40). The air pump (40) is externally mounted inside the housing of the frame (23). One end of an air pipe (41) is connected to the output end of the air pump (40), and the other end is connected to an airbag (44). A pressure sensor (45) is arranged outside the airbag (44). The airbag (44) and the pressure sensor (45) are wrapped with a cuff (42). A PPG sensor (46) is arranged on the outer wall of the cuff (42).

9. A two-way four-limb training device for chronic kidney disease rehabilitation according to claim 1, characterized in that, The four-limb monitoring system includes: A data acquisition module for real-time collecting the patient's blood pressure, heart rate and edema data and transmitting them to the system for analysis; A data analysis and processing module for analyzing the collected data and calculating the most suitable training intensity and adjustment plan; A control instruction issuing module for issuing control instructions according to the analysis results to adjust the operations of the first water pump (10) and the second water pump (13) to adjust the training intensity; A health monitoring and alarm module for monitoring the patient's blood pressure and heart rate and giving an alarm and prompting to stop training when abnormal; The massage control module is used to control the operation of the massage mechanism after the training to promote blood circulation and reduce edema. The display and operation interface module is used to provide real-time health data, training intensity, and control instruction feedback for patients and medical staff, and allow interactive operations.

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