Auxiliary device for shoulder joint rehabilitation of hemiplegic patient in soft paralysis period

Abstract

The utility model discloses an auxiliary device for shoulder joint rehabilitation of a hemiplegic patient in a soft paralysis period, which comprises a mechanical arm, a mechanical arm mounting frame, a servo motor and a lifting mechanism, the elbow fixator, the forearm fixator and the big arm fixator each comprise a tile-shaped plate, a sliding block and an adjustable bandage, the tile-shaped plates are attached to the corresponding portions of the human arm, the adjustable bandages are used for fixing the corresponding portions of the human arm, the mechanical arm is provided with a guide rail matched with the sliding block, the sliding block is further provided with a limiting screw, and the limiting screw is connected with the sliding block. The positions of the elbow fixator, the forearm fixator and the big arm fixator on the mechanical arm can be independently adjusted and fixed through limiting screws, one end of the mechanical arm is rotatably connected with the mechanical arm mounting frame, the mechanical arm is driven by the servo motor to rotate, the mechanical arm mounting frame is connected with the lifting mechanism, and the lifting mechanism is connected with the mechanical arm. The terrain clearance of the mechanical arm can be adjusted through the lifting mechanism.

Description

Technical Field

[0001] This utility model relates to an assistive device for shoulder joint rehabilitation in the flaccid paralysis stage of hemiplegic patients. Background Technology

[0002] Hemiplegia is a motor disorder caused by brain injury, commonly seen in cases of stroke and traumatic brain injury. During rehabilitation, the recovery of shoulder joint function is crucial for hemiplegic patients, as shoulder joint mobility directly impacts their daily life and self-care abilities. In the early stages of hemiplegia, patients may experience flaccid paralysis of the shoulder joint, manifesting as muscle weakness, limited range of motion, and pain.

[0003] Currently, the main methods of rehabilitation treatment include physical therapy, functional training, and the use of assistive devices. However, existing shoulder joint rehabilitation equipment often has the following problems:

[0004] Poor adaptability: Many rehabilitation devices cannot be adjusted according to the specific condition of the patient, resulting in inconvenience in use and failure to effectively meet individual needs.

[0005] Limited range of motion: Some equipment designs fail to provide comprehensive movement modes, limiting multi-dimensional training of the patient's shoulder joint and affecting rehabilitation outcomes.

[0006] Usage complexity: Existing equipment is often complex to operate, requiring patients or caregivers to have a high level of technical skills, which affects the frequency and effectiveness of equipment use.

[0007] Lack of feedback mechanisms: Many rehabilitation devices are not equipped with real-time monitoring systems and lack assessment of movement status, making it difficult to adjust rehabilitation plans based on scientific data. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an assistive device for shoulder joint rehabilitation in the flaccid paralysis stage of hemiplegic patients.

[0009] An assistive device for shoulder joint rehabilitation during the flaccid paralysis phase of hemiplegic patients includes a robotic arm, a robotic arm mounting frame, a servo motor, and a lifting mechanism. The robotic arm is equipped with an elbow fixator, a forearm fixator, and an upper arm fixator. Each of these fixators includes a tile-shaped plate, a slider, and an adjustable strap. The tile-shaped plate conforms to the corresponding part of the human arm, and the adjustable strap is used to fix the corresponding part of the human arm. The robotic arm has a guide rail that cooperates with the slider, and the slider also has a limit screw. The positions of the elbow fixator, forearm fixator, and upper arm fixator on the robotic arm can be independently adjusted and fixed by the limit screw. One end of the robotic arm is rotatably connected to the robotic arm mounting frame, with a rotation angle of 0° to 270°. The rotation of the robotic arm is driven by a servo motor. The robotic arm mounting frame is connected to the lifting mechanism, and the height of the robotic arm off the ground can be adjusted by the lifting mechanism, with an adjustment range of 500mm to 1800mm.

[0010] As a further improvement, the robotic arm is made of aluminum alloy, and the elbow fixation, forearm fixation and upper arm fixation are made of polytetrafluoroethylene. The inner sides of the elbow fixation, forearm fixation and upper arm fixation are provided with silicone pads, elastic rubber or sponge pads.

[0011] As a further improvement, the robotic arm mounting frame is equipped with a limiter to limit the rotation range of the robotic arm.

[0012] As a further improvement, the adjustable strap is a tightening Velcro elastic strap.

[0013] As a further improvement, the servo motor is equipped with a feedback device for monitoring the operating status, and the feedback device includes an encoder.

[0014] As a further improvement, the lifting mechanism includes a base with four first guide columns on it. The first guide columns pass through the four corners of the lifting platform, and the lifting platform can slide up and down along the first guide columns. A nut is provided at the center of the lifting platform, and the nut is fitted onto a lead screw to rotate, thereby driving the lifting platform to rise or fall. The lead screw is connected to a stepper motor through a gear set. The lifting platform is connected to a robotic arm mounting frame through four second guide columns. A limiting plate is provided at the top of the first guide columns, and the limiting plate has guide holes that match the second guide columns.

[0015] Beneficial effects:

[0016] Personalized adjustment: It can be adjusted according to the patient's body shape and rehabilitation needs to achieve optimal support and comfort.

[0017] Diverse movement modes: Provides a variety of movement modes to promote shoulder joint movement in different directions and improve rehabilitation results.

[0018] Simple and easy to use: The design is simple and easy to operate, making it convenient for patients and nursing staff to use and improving the utilization rate of rehabilitation equipment.

[0019] Real-time monitoring and feedback: The built-in monitoring system records and analyzes exercise data in real time, providing a basis for decision-making during the rehabilitation process. Attached Figure Description

[0020] Figure 1 This is a three-dimensional diagram of an assistive device used for shoulder joint rehabilitation during the flaccid paralysis phase in hemiplegic patients.

[0021] Figure 2 This is a front view of an assistive device used for shoulder joint rehabilitation during the flaccid paralysis phase in hemiplegic patients;

[0022] 1. Robotic arm 2. Robotic arm mounting frame 3. Servo motor 4. Lifting mechanism 5. Elbow fixator 6. Forearm fixator 7. Upper arm fixator 8. Slider 9. Guide rail 10. Adjustable strap 11. Base 12. Gear set 13. Stepper motor 14. Nut 15. Lifting platform 16. Lead screw 17. First guide post 18. Second guide post 19. Limit plate. Detailed Implementation

[0023] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0024] like Figures 1-2 As shown, an assistive device for shoulder joint rehabilitation in the flaccid paralysis stage of hemiplegic patients includes a robotic arm 1, a robotic arm mounting frame 2, a servo motor 3, a lifting mechanism 4, an elbow fixator 5, a forearm fixator 6, an upper arm fixator 7, a slider 8, a guide rail 9, an adjustable strap 10, a base 11, a gear set 12, a stepper motor 13, a nut 14, a lifting platform 15, a lead screw 16, a first guide post 17, a second guide post 18, and a limiting plate 19.

[0025] An assistive device for shoulder joint rehabilitation in the flaccid paralysis stage of hemiplegic patients includes a robotic arm 1, a robotic arm mounting frame 2, a servo motor 3, and a lifting mechanism 4. The robotic arm 1 is equipped with an elbow fixator 5, a forearm fixator 6, and an upper arm fixator 7. The robotic arm 1 is made of aluminum alloy, while the elbow fixator 5, forearm fixator 6, and upper arm fixator 7 are made of polytetrafluoroethylene (PTFE). The inner sides of the elbow fixator 5, forearm fixator 6, and upper arm fixator 7 are lined with silicone pads, elastic rubber, or sponge pads. Both the fixation device 6 and the upper arm fixation device 7 include a tile-shaped plate, a slider 8, and an adjustable strap 10. The tile-shaped plate fits into the corresponding part of the human arm. The adjustable strap 10 is used to fix the corresponding part of the human arm. The adjustable strap 10 is a tightening Velcro elastic strap. The robotic arm 1 is provided with a guide rail 9 that cooperates with the slider 8. The slider 8 is also provided with a limit screw. The positions of the elbow fixation device 5, the forearm fixation device 6, and the upper arm fixation device 7 on the robotic arm 1 can be adjusted independently and fixed by the limit screw.

[0026] One end of the robotic arm 1 is rotatably connected to the robotic arm mounting frame 2, with a rotation angle of 0° to 270°.

[0027] The robotic arm mounting frame 2 is equipped with a limiter to limit the rotation range of the robotic arm 1. The rotation of the robotic arm 1 is driven by a servo motor 3. The servo motor 3 is equipped with a feedback device to monitor the operating status. The feedback device includes an encoder. The robotic arm mounting frame 2 is connected to the lifting mechanism 4. The height of the robotic arm 1 off the ground can be adjusted by the lifting mechanism 4. The adjustment range of the height off the ground is 500mm to 1800mm.

[0028] The lifting mechanism 4 includes a base 11 with four first guide posts 17 on it. The first guide posts 17 pass through the four corners of the lifting platform 15, and the lifting platform 15 can slide up and down along the first guide posts 17. A nut 14 is provided at the center of the lifting platform 15. The nut 14 is fitted on the lead screw 16 and rotates to drive the lifting platform 15 to rise or fall. The lead screw 16 is connected to the stepper motor 13 through the gear set 12. The lifting platform 15 is connected to the robotic arm mounting frame 2 through four second guide posts 18. A limiting plate 19 is provided at the top of the first guide post 17, and the limiting plate 19 is provided with guide holes that match the second guide posts 18.

[0029] Example 1:

[0030] With the patient seated or standing, adjust the height of robotic arm 1 from the ground to 1000mm–1600mm. Secure the patient's arm to the elbow fixator 5, forearm fixator 6, and upper arm fixator 7 using Velcro elastic straps. The patient's arm should be perpendicular to the ground, with an initial angle of 0°. Set the servo motor 3 parameters, and rotate robotic arm 1 from 0° to 90° or 0° to 180° at a speed of 1 second per cycle, with a 30-second interval every minute, for a total duration of 5–10 minutes. Observe the patient's changes and reactions. Changes in angle or speed will trigger an alarm, immediately stopping the treatment. After treatment, turn off the power and remove the Velcro elastic straps.

[0031] Example 2:

[0032] The patient lies supine on the bed. The height of robotic arm 1 off the ground is adjusted to 500-800mm. The patient's arm is secured to the elbow fixator 5, forearm fixator 6, and upper arm fixator 7 using Velcro elastic straps. At this point, the patient's arm is parallel to the bed surface, with an initial angle of 90°. The parameters of servo motor 3 are set, and the rotation angle of robotic arm 1 is set to 90°-180° or 90°-270°, with a speed of 1 second per cycle, a 30-second interval every minute, and a total duration of 5-10 minutes. The patient's changes and reactions are observed. Changes in angle or speed will trigger an alarm device, immediately stopping the treatment. After treatment, the power is turned off, and the Velcro elastic straps are removed.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An assistive device for shoulder joint rehabilitation during the flaccid paralysis phase of hemiplegic patients, characterized in that, The system includes a robotic arm, a robotic arm mounting frame, a servo motor, and a lifting mechanism. The robotic arm is equipped with an elbow fixator, a forearm fixator, and an upper arm fixator. Each of these fixators includes a tile-shaped plate, a slider, and an adjustable strap. The tile-shaped plate fits into the corresponding part of the human arm, and the adjustable strap is used to fix the corresponding part of the human arm. The robotic arm has a guide rail that cooperates with the slider, and the slider also has a limit screw. The positions of the elbow fixator, forearm fixator, and upper arm fixator on the robotic arm can be adjusted independently and fixed by the limit screw. One end of the robotic arm is rotatably connected to the robotic arm mounting frame, with a rotation angle of 0° to 270°. The rotation of the robotic arm is driven by a servo motor. The robotic arm mounting frame is connected to the lifting mechanism, and the height of the robotic arm off the ground can be adjusted by the lifting mechanism, with an adjustment range of 500mm to 1800mm.

2. The assistive device for shoulder joint rehabilitation during the flaccid paralysis phase of hemiplegic patients according to claim 1, characterized in that, The robotic arm is made of aluminum alloy, and the elbow, forearm, and upper arm fixation devices are made of polytetrafluoroethylene. The inner sides of the elbow, forearm, and upper arm fixation devices are provided with silicone pads, elastic rubber, or sponge pads.

3. The assistive device for shoulder joint rehabilitation during the flaccid paralysis phase of hemiplegic patients according to claim 1, characterized in that, The robotic arm mounting frame is equipped with a limiter to limit the rotation range of the robotic arm.

4. The assistive device for shoulder joint rehabilitation during the flaccid paralysis phase of hemiplegic patients according to claim 1, characterized in that, The adjustable strap is a tightening Velcro elastic strap.

5. An assistive device for shoulder joint rehabilitation in the flaccid paralysis stage of hemiplegic patients according to claim 1, characterized in that, The servo motor is equipped with a feedback device for monitoring its operating status, and the feedback device includes an encoder.

6. The assistive device for shoulder joint rehabilitation in the flaccid paralysis stage of hemiplegic patients according to claim 1, characterized in that, The lifting mechanism includes a base with four first guide columns on it. The first guide columns pass through the four corners of the lifting platform, allowing the lifting platform to slide up and down along the first guide columns. A nut is located at the center of the lifting platform, which is fitted onto a lead screw and rotates to drive the lifting platform to rise or fall. The lead screw is connected to a stepper motor via a gear set. The lifting platform is connected to a robotic arm mounting frame via four second guide columns. A limiting plate is located at the top of the first guide columns, and the limiting plate has guide holes that match the second guide columns.

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