ICU critical patient passive limb activity rehabilitation device

Abstract

The application discloses an ICU critical patient passive limb activity rehabilitation device, and relates to the technical field of ICU critical patient rehabilitation devices.The ICU critical patient passive limb activity rehabilitation device comprises a base, a support fixedly connected to one side of the base, and a trunk frame arranged on the top of the base; and a training assembly is arranged in the inner cavity of the base.The double functions of single power source simultaneously driving lower limb passive flexion and extension training and foot massage are realized through cooperation of the driving assembly and the training assembly; when a servo motor drives a lead screw to rotate, a threaded seat moves along the axial direction of the lead screw; the trunk frame and a leg frame movably connected to the trunk frame are driven by a vertical frame to relatively rotate, thereby simulating passive flexion and extension movement of a hip joint; the threaded seat synchronously drives a piston rod to reciprocate in an air cylinder, compressed gas generated by the piston rod is delivered to an air bag through an air pipe, and a massage block at the top of the air bag is used for alternately pressing the foot bottom of a patient, so that the device cost and energy consumption are reduced without additionally arranging a motor or an air pump.

Description

Technical Field

[0001] This invention belongs to the field of rehabilitation equipment technology for ICU critically ill patients, and in particular relates to a passive limb movement rehabilitation device for ICU critically ill patients. Background Technology

[0002] ICU critical care patients are those whose conditions are critical or complex and require close monitoring and comprehensive treatment in the intensive care unit (ICU). These patients are often at risk of death and may require highly specialized care due to severe trauma, postoperative complications, severe infection, respiratory failure, heart failure or other systemic diseases. Critically ill patients in the ICU often rely on advanced medical equipment for vital sign monitoring, respiratory support and various drug treatments to ensure their vital signs are stable and promote recovery.

[0003] There are still some problems in the rehabilitation process of ICU critically ill patients using existing technologies. For example, patients in the ICU are prone to complications such as joint contractures, deep vein thrombosis, and ICU-acquired weakness due to prolonged bed rest and inability to move actively. At present, clinical practice mainly relies on manual passive movement or ordinary rehabilitation devices for training. However, manual operation is labor-intensive and training is not continuous. Existing devices lack safety interlocking mechanisms adapted to the ICU environment, cannot automatically adjust training parameters according to the patient's real-time vital signs, and have limited functions, mostly only realizing lower limb flexion and extension movements, and not fully utilizing the drive stroke to simultaneously complete auxiliary functions such as foot massage.

[0004] To address these issues, we provide a passive limb movement rehabilitation device for critically ill ICU patients. Summary of the Invention

[0005] The purpose of this invention is to provide a passive limb movement rehabilitation device for ICU critically ill patients. By combining training components and drive components, it solves the problems of high manual labor intensity and limited functionality in the prior art when passively training the limbs of ICU critically ill patients.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0007] This invention relates to a passive limb movement rehabilitation device for critically ill ICU patients, comprising a base, a support fixedly connected to one side of the base, and a torso frame mounted on the top of the base; a training component is disposed within the inner cavity of the base, the training component including a leg frame, the leg frame being movably connected to one side of the torso frame via a pivot, and support frames rotatably connected to both sides of the leg frame via pivots, the bottom of one side of the support frame being rotatably connected to one side of the support via a pivot, a frame fixedly connected to the top of the support, a partition fixedly connected to the inner cavity of the frame, and an airbag fixedly connected to one side of the partition. A massage block is fixedly connected to the top of the airbag, and an air tube is connected to one side of the airbag. A first valve is installed on the surface of the air tube. A drive assembly is provided in the inner cavity of the base. The drive assembly includes a lead screw, which is located on one side of the inner cavity of the base. A threaded seat is threaded to the surface of the lead screw. A vertical frame is fixedly connected to the top of the threaded seat. The top of one side of the vertical frame is fixedly connected to one side of the torso frame. An air cylinder is fixedly connected to the top of one side of the support. One end of the air cylinder is connected to one end of the air tube. A piston rod is slidably connected to the inner cavity of the air cylinder. One end of the piston rod is fixedly connected to one side of the threaded seat.

[0008] The present invention is further configured such that a head frame is fixedly connected to one side of the torso frame, and a first sensor is fixedly connected to both sides of the inner cavity of the head frame, wherein the first sensor is a body temperature sensor.

[0009] The present invention is further configured such that a second sensor is fixedly connected to both sides of the inner cavity of the torso frame, and a third sensor is fixedly connected to both sides of the inner cavity of the leg frame. The second sensor is a respiratory rate sensor, and the third sensor is an electromyography sensor.

[0010] The present invention is further configured such that the inner cavity of the base has a cavity, one side of the cavity is rotatably connected to one end of the lead screw via a rotating shaft, and one side of the base has a heat dissipation mesh.

[0011] The present invention is further configured such that a limiting rod is fixedly connected to one side of the cavity, and the surface of the limiting rod is slidably connected to a guide hole opened on the threaded seat.

[0012] The present invention is further configured such that a servo motor is fixedly connected to one side of the cavity, and the output end of the servo motor is fixedly connected to one end of the lead screw.

[0013] The invention is further configured such that a spare pipe is connected to one side of the top of the air cylinder, and a second valve is installed on the surface of the spare pipe.

[0014] The present invention is further configured such that a first fixing strap and a second fixing strap are fixedly connected to the torso frame and the leg frame respectively, and both the first fixing strap and the second fixing strap are detachably glued by Velcro.

[0015] The present invention is further configured such that a control panel is fixedly connected to the top of the base, and the control panel is electrically connected to the first sensor, the second sensor, the third sensor, the servo motor, the first valve, and the second valve respectively. The control panel is equipped with a microprocessor for receiving sensor signals and controlling the start, stop, speed, and direction of the servo motor, as well as controlling the opening and closing states of the first valve and the second valve.

[0016] The present invention is further configured such that a vital signs data interface is provided on one side of the base for receiving patient physiological parameter signals from an external monitor, and the microprocessor controls the operation or shutdown of the servo motor according to the signals.

[0017] The present invention has the following beneficial effects.

[0018] This invention achieves the dual function of simultaneously driving passive flexion and extension training of the lower limbs and foot massage through the cooperation of the drive component and training component. When the servo motor drives the lead screw to rotate, the threaded seat moves along the axis of the lead screw, which drives the torso frame and the leg frame connected to it to rotate relative to each other through the vertical frame, simulating the passive flexion and extension movement of the hip joint. The threaded seat synchronously drives the piston rod to reciprocate in the air cylinder. The compressed gas generated is delivered to the air bag through the air tube, so that the massage block at the top of the air bag alternately presses the sole of the patient's foot. There is no need to add an extra motor or air pump, which reduces equipment cost and energy consumption. At the same time, it ensures the natural synchronization of flexion and extension movements and massage rhythm, and improves the overall coordination of rehabilitation training.

[0019] This invention enhances the safety and adaptability of the equipment in the ICU environment by integrating multiple sensors and an intelligent control panel. The first sensor in the head frame can monitor the patient's body temperature in real time, the second sensor in the torso frame monitors the respiratory rate, and the third sensor in the leg frame monitors electromyographic activity. All sensor signals are transmitted to a microprocessor for analysis. When the sensors detect abnormal physiological parameters, the microprocessor can automatically control the servo motor to stop and issue an alarm to avoid secondary injury to the patient during training. At the same time, the control panel also controls the opening and closing of the first and second valves, realizing the on-demand activation or deactivation of the foot massage function, meeting the individualized needs of ICU patients at different stages of rehabilitation.

[0020] This invention, through a vital signs data interface on one side of the base, can receive real-time physiological parameter signals such as heart rate, blood pressure, and blood oxygen saturation from an external ICU monitor. The microprocessor dynamically controls the operation or shutdown of the servo motor based on these signals, forming a closed-loop linkage between the device and the hospital monitoring system. In addition, the fixing straps on the torso frame and leg frame are detachably glued with Velcro, which can reliably restrain the patient's limbs on the frame and prevent slippage during training. This device has a compact structure and is easy to operate, which can significantly reduce the labor intensity of medical staff in manual passive activities, while providing continuous, standardized, and intelligent passive rehabilitation training. It has important clinical value in preventing joint contractures, deep vein thrombosis, and ICU-acquired weakness.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 A three-dimensional passive limb movement rehabilitation device for critically ill ICU patients Figure 1 .

[0024] Figure 2 A three-dimensional passive limb movement rehabilitation device for critically ill ICU patients Figure 2 .

[0025] Figure 3 This is a schematic diagram of the base surface structure in a passive limb movement rehabilitation device for critically ill ICU patients.

[0026] Figure 4 This is a schematic diagram of the surface structure of the torso frame in a passive limb movement rehabilitation device for critically ill ICU patients.

[0027] Figure 5 This is a schematic diagram of the internal structure of a hollow cavity in a passive limb movement rehabilitation device for critically ill ICU patients.

[0028] Figure 6 This is a schematic diagram of the top structure of a support in a passive limb movement rehabilitation device for critically ill ICU patients.

[0029] Figure 7 This is a schematic diagram of the surface structure of an airbag in a passive limb movement rehabilitation device for critically ill ICU patients.

[0030] In the attached diagram: 1. Base; 2. Support; 3. Torso frame; 4. Leg frame; 5. Support frame; 6. Frame; 7. Partition; 8. Airbag; 9. Massage block; 10. Air tube; 11. First valve; 12. Threaded seat; 13. Vertical frame; 14. Air cylinder; 15. Piston rod; 16. Head frame; 17. First sensor; 18. Second sensor; 19. Third sensor; 20. Cavity; 21. Heat dissipation vent; 22. Limiting rod; 23. Servo motor; 24. Spare tube; 25. Second valve; 26. First fixing strap; 27. Second fixing strap; 28. Control panel; 29. ​​Vital signs data interface; 30. Lead screw. Detailed Implementation

[0031] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Example 1 Please see Figures 1-7 This invention relates to a passive limb movement rehabilitation device for critically ill ICU patients, comprising a base 1, a support 2 fixedly connected to one side of the base 1, and a torso frame 3 mounted on the top of the base 1; a training component is disposed within the cavity of the base 1, the training component including a leg frame 4, the leg frame 4 being movably connected to one side of the torso frame 3 via a pivot, and support frames 5 being rotatably connected to both sides of the leg frame 4 via pivots, the bottom of one side of the support frame 5 being rotatably connected to one side of the support 2 via a pivot, a frame 6 being fixedly connected to the top of the support 2, a partition 7 being fixedly connected to the cavity of the frame 6, an airbag 8 being fixedly connected to one side of the partition 7, and a massage button being fixedly connected to the top of the airbag 8. The friction block 9 and the airbag 8 are connected to one side of the air tube 10, and the surface of the air tube 10 is equipped with a first valve 11; the inner cavity of the base 1 is provided with a drive assembly, which includes a lead screw 30. The lead screw 30 is located on one side of the inner cavity of the base 1, and the surface of the lead screw 30 is threadedly connected to a threaded seat 12. The top of the threaded seat 12 is fixedly connected to a vertical frame 13. The top of one side of the vertical frame 13 is fixedly connected to one side of the torso frame 3. The top of the support 2 is fixedly connected to an air cylinder 14. One end of the air cylinder 14 is connected to one end of the air tube 10. The inner cavity of the air cylinder 14 is slidably connected to a piston rod 15. One end of the piston rod 15 is fixedly connected to one side of the threaded seat 12.

[0033] Specifically: Base 1 serves as the supporting foundation for the entire rehabilitation device. Its internal cavity 20 has reserved installation space for integrating a vital signs detection module or related circuit boards. Support 2 is fixedly connected to one side of base 1, supporting the moving end of leg frame 4 and providing a fulcrum for rotation. Torso frame 3 is located on top of base 1, and it forms a movable hinge with leg frame 4 via a pivot, allowing leg frame 4 to rotate around the distal end of torso frame 3. Support frames 5 are rotatably connected to both sides of leg frame 4 via pivots. The bottom of support frames 5 is rotatably connected to support 2, thus forming a four-bar linkage mechanism to ensure leg stability. The frame 4 maintains a stable posture trajectory during movement. The top of the support 2 is fixed with a frame 6. The inner cavity of the frame 6 is divided into an installation area by a partition 7. The airbag 8 is fixed to one side of the partition 7. The top of the airbag 8 is bonded or embedded with a massage block 9 made of medical silicone material. The airbag 8 is connected to the air cylinder 14 through the air pipe 10. The first valve 11 installed on the air pipe 10 is used to control the opening and closing of the air passage. When the threaded seat 12 moves along the lead screw 30, the piston rod 15 is pushed and pulled. The gas in the air cylinder 14 enters or exits the airbag 8 through the air pipe 10, realizing the alternating lifting and lowering movement of the massage block 9.

[0034] Example 2 Please see Figures 1-7 Based on embodiment 1, a head frame 16 is fixedly connected to one side of the torso frame 3. A first sensor 17 is fixedly connected to both sides of the inner cavity of the head frame 16. The first sensor 17 is a body temperature sensor. A second sensor 18 is fixedly connected to both sides of the inner cavity of the torso frame 3. A third sensor 19 is fixedly connected to both sides of the inner cavity of the leg frame 4. The second sensor 18 is a respiratory rate sensor. The third sensor 19 is an electromyography sensor. A cavity 20 is opened in the inner cavity of the base 1. One side of the cavity 20 is rotatably connected to one end of the lead screw 30 through a rotating shaft. A heat dissipation mesh 21 is opened on one side of the base 1. A limit rod 22 is fixedly connected to one side of the cavity 20. The surface of the limit rod 22 is slidably connected to the guide hole opened on the threaded seat 12.

[0035] Specifically: The head frame 16 is fixedly connected to one side of the torso frame 3, forming a 60-70° angle with the torso frame 3, which meets the physiological position requirements of the semi-recumbent position for ICU patients. A first sensor 17, a non-contact infrared body temperature sensor, is embedded on both sides of the inner wall of the head frame 16 to monitor the patient's head temperature in real time. A second sensor 18, a piezoelectric thin-film respiratory rate sensor, is embedded on both sides of the inner wall of the torso frame 3 to obtain respiratory waveforms by detecting chest wall movement. A third sensor is embedded on both sides of the inner wall of the leg frame 4. 19. The third sensor 19 is a surface electromyography sensor, used to collect electromyographic signals of the tibialis anterior muscle or gastrocnemius muscle of the calf to determine whether the patient has spasm or voluntary resistance. The cavity 20 opened in the inner cavity of the base 1 provides installation space for the lead screw 30. One side of the cavity 20 is rotatably connected to the end of the lead screw 30 through a bearing. The limiting rod 22 is fixed to one side of the cavity 20, and its surface slides with the guide hole opened on the threaded seat 12 to prevent the threaded seat 12 from rotating with the lead screw 30 and to ensure its linear motion trajectory. The heat dissipation mesh 21 opened on one side of the base 1 is used for ventilation and heat dissipation of the servo motor 23.

[0036] Example 3 Please see Figures 1-7 Based on Embodiments 1 and 2, a servo motor 23 is fixedly connected to one side of the cavity 20. The output end of the servo motor 23 is fixedly connected to one end of the lead screw 30. A spare tube 24 is connected to one side of the top of the air cylinder 14. A second valve 25 is installed on the surface of the spare tube 24. A first fixing strap 26 and a second fixing strap 27 are fixedly connected to the torso frame 3 and the leg frame 4, respectively. The first fixing strap 26 and the second fixing strap 27 are detachably glued by Velcro. A control panel 28 is fixedly connected to the top of the base 1. The control panel 28 is electrically connected to the first sensor 17, the second sensor 18, the third sensor 19, the servo motor 23, the first valve 11, and the second valve 25, respectively. The control panel 28 is equipped with a microprocessor for receiving sensor signals and controlling the start, stop, speed, and direction of the servo motor 23, as well as controlling the opening and closing states of the first valve 11 and the second valve 25. A vital signs data interface 29 is provided on one side of the base 1 for receiving patient physiological parameter signals from an external monitor. The microprocessor controls the operation or shutdown of the servo motor 23 according to the signals.

[0037] Specifically: The servo motor 23 is fixedly installed on one side of the cavity 20, and its output shaft is fixedly connected to one end of the lead screw 30 through a coupling, providing power to the entire drive system. A spare pipe 24 is connected to one side of the top of the air cylinder 14, and a second valve 25 is installed on the spare pipe 24. When the second valve 25 is open and the first valve 11 is closed, the air cylinder 14 is connected to the atmosphere through the spare pipe 24, and the piston rod 15 moves only to expel air, while the airbag 8 does not move, thus realizing the on-demand closure of the foot massage function. A first fixing strap 26 is fixedly connected to the torso frame 3, and a second fixing strap 26 is fixedly connected to the leg frame 4. Two fixed straps 27 are detachably glued using Velcro. The inside of the straps is lined with a breathable pressure-reducing pad to reduce the risk of pressure sores. The control panel 28 is fixed to the top of the base 1 and is electrically connected to the sensors, servo motors 23 and valves. Its built-in microprocessor is used for signal acquisition and actuator control. A vital signs data interface 29 is provided on one side of the base 1. This interface can be an RS232, USB or Bluetooth module, used to receive signals such as heart rate, blood pressure, and blood oxygen from the ICU monitor. The microprocessor automatically controls the start and stop of the servo motors 23 according to preset thresholds to form a safety interlock.

[0038] The working principle of this invention is as follows: Before use, medical staff place the patient lying flat on the rehabilitation device, with the patient's torso aligned with the torso frame 3, the head placed on the head frame 16, and the legs placed on the leg frame 4. The patient's torso and lower legs are reliably fixed by the first fixing strap 26 and the second fixing strap 27. The breathable pressure-reducing pad on the inside of the straps can reduce the risk of local pressure sores. According to the patient's rehabilitation needs, training parameters are set through the control panel 28, and the working mode is selected by the combination of opening and closing the first valve 11 and the second valve 25: when foot massage is needed, the first valve 11 is opened and the second valve 25 is closed, so that the air cylinder 14 and the air bag 8 are in a connected state. When massage is not needed, the first valve 11 is closed and the second valve 25 is opened, so that the air cylinder 14 is connected to the atmosphere through the spare tube 24. The piston rod 15 moves only to expel air, and the air bag 8 does not move.

[0039] After the device is started, the servo motor 23 drives the lead screw 30 to rotate in the forward direction. The threaded seat 12 moves to the distal end along the axis of the lead screw 30. On the one hand, the threaded seat 12 pushes the torso frame 3 through the vertical frame 13. Since the torso frame 3 is relatively fixed to the base 1, its reaction force causes the leg frame 4 to be lifted upward around the rotation axis of the distal end of the torso frame 3, simulating the passive flexion movement of the hip joint. On the other hand, the threaded seat 12 synchronously drives the piston rod 15 to perform compression movement in the air cylinder 14, forcing the gas into the air bag 8 through the air tube 10, causing the air bag 8 to expand and push the massage block 9 upward, producing a pressing effect on the patient's sole. When the servo motor 23 rotates in the reverse direction, the threaded seat 12 retracts to the proximal end, and the leg frame 4 returns to its original position under the guidance of the support frame 5, simulating the extension movement of the hip joint. At the same time, the piston rod 15 retracts, and the gas in the air bag 8 returns to the air cylinder 14 through the air tube 10. The massage block 9 descends, and the pressure on the sole of the foot is released. This process is repeated to achieve the synchronous performance of passive flexion and extension training of the lower limbs and alternating foot massage.

[0040] During training, the first sensor 17 inside the head frame 16 monitors the patient's body temperature in real time, the second sensor 18 inside the torso frame 3 monitors respiratory rate, and the third sensor 19 inside the leg frame 4 monitors electromyographic activity. All sensor signals are transmitted to the microprocessor in the control panel 28 for analysis. Simultaneously, the vital signs data interface 29 on one side of the base 1 continuously receives signals such as heart rate, blood pressure, and blood oxygen saturation from the ICU monitor. When any sensor or external vital signs parameter exceeds a preset safety threshold, the microprocessor immediately controls the servo motor 23 to stop and issues an audible and visual alarm to prevent secondary harm to the patient. Medical staff can view various data and adjust training parameters at any time through the control panel 28. After training, the equipment automatically resets to its initial position.

[0041] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A passive limb movement rehabilitation device for critically ill ICU patients, comprising a base (1), characterized in that: A support (2) is fixedly connected to one side of the base (1), and a torso frame (3) is provided on the top of the base (1). The base (1) has a training component in its inner cavity. The training component includes a leg frame (4), which is movably connected to one side of the torso frame (3) via a pivot. Both sides of the leg frame (4) are rotatably connected to a support frame (5) via a pivot. The bottom of one side of the support frame (5) is rotatably connected to one side of the support (2) via a pivot. The top of the support (2) is fixedly connected to a frame (6). The inner cavity of the frame (6) is fixedly connected to a partition (7). One side of the partition (7) is fixedly connected to an airbag (8). The top of the airbag (8) is fixedly connected to a massage block (9). One side of the airbag (8) is connected to an air tube (10). A first valve (11) is installed on the surface of the air tube (10). The base (1) is provided with a drive assembly in its inner cavity. The drive assembly includes a lead screw (30). The lead screw (30) is located on one side of the inner cavity of the base (1). The lead screw (30) is threadedly connected to a threaded seat (12). A vertical frame (13) is fixedly connected to the top of the threaded seat (12). The top of one side of the vertical frame (13) is fixedly connected to one side of the torso frame (3). An air cylinder (14) is fixedly connected to one side of the top of the support (2). One end of the air cylinder (14) is connected to one end of the air pipe (10). A piston rod (15) is slidably connected to the inner cavity of the air cylinder (14). One end of the piston rod (15) is fixedly connected to one side of the threaded seat (12).

2. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 1, characterized in that: The torso frame (3) is fixedly connected to a head frame (16) on one side, and a first sensor (17) is fixedly connected to both sides of the inner cavity of the head frame (16). The first sensor (17) is a body temperature sensor.

3. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 1, characterized in that: The torso frame (3) has a second sensor (18) fixedly connected to both sides of its inner cavity, and the leg frame (4) has a third sensor (19) fixedly connected to both sides of its inner cavity. The second sensor (18) is a respiratory rate sensor, and the third sensor (19) is an electromyography sensor.

4. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 1, characterized in that: The base (1) has an inner cavity (20), one side of which is rotatably connected to one end of the lead screw (30) via a rotating shaft, and one side of the base (1) has a heat dissipation mesh (21).

5. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 4, characterized in that: A limiting rod (22) is fixedly connected to one side of the cavity (20), and the surface of the limiting rod (22) is slidably connected to the guide hole opened on the threaded seat (12).

6. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 4, characterized in that: A servo motor (23) is fixedly connected to one side of the cavity (20), and the output end of the servo motor (23) is fixedly connected to one end of the lead screw (30).

7. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 1, characterized in that: The top side of the air cylinder (14) is connected to a spare pipe (24), and a second valve (25) is installed on the surface of the spare pipe (24).

8. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 1, characterized in that: The torso frame (3) and leg frame (4) are respectively fixedly connected with a first fixing strap (26) and a second fixing strap (27), and the first fixing strap (26) and the second fixing strap (27) are both detachably glued by Velcro.

9. The passive limb movement rehabilitation device for critically ill ICU patients according to claim 1, characterized in that: The base (1) is fixedly connected to a control panel (28) on top. The control panel (28) is electrically connected to the first sensor (17), the second sensor (18), the third sensor (19), the servo motor (23), the first valve (11), and the second valve (25). The control panel (28) is equipped with a microprocessor, which is used to receive sensor signals and control the start, stop, speed and direction of the servo motor (23), as well as control the opening and closing states of the first valve (11) and the second valve (25).

10. A passive limb movement rehabilitation device for critically ill ICU patients according to claim 1, characterized in that: The base (1) has a vital signs data interface (29) on one side, which is used to receive the patient's physiological parameter signals from the external monitor. The microprocessor controls the operation or shutdown of the servo motor (23) according to the signal.

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