Intelligent counterforce self-adaptive training instrument for postoperative rehabilitation of hand tendon

Abstract

The invention relates to the technical field of postoperative rehabilitation, and particularly discloses an intelligent counterforce self-adaptive training instrument for hand tendon postoperative rehabilitation, which comprises a palm sleeve, a finger sleeve is arranged at the front end of the palm sleeve, a sensor is arranged on the inner wall of the finger sleeve, a pulling assembly is arranged on the back surface of the finger sleeve, and the pulling assembly comprises a pulling part, a sliding seat and a moving plate. One end of the tension piece is fixed on the surface of the fingerstall, the other end of the tension piece is connected with the sliding seat, and the sliding seat is connected with the moving plate; the device further comprises a connecting base, the connecting base is arranged on the outer wall of the movable plate in a sleeving mode, a first electromagnetic plate is arranged on the inner wall of the connecting base, and a first metal block abuts against the surface of the first electromagnetic plate, so that double self-adaptive adjustment of resistance and attaching force is achieved; and the confrontation resistance of the corresponding tension piece and the pressing force of the air bag on the sensor are automatically adjusted in a grading manner.

Description

Technical Field

[0001] This invention relates to the field of postoperative rehabilitation technology, specifically to an intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons. Background Technology

[0002] The core of postoperative rehabilitation for hand tendon injuries lies in protecting and repairing the tendon while scientifically applying controllable resistance to promote gliding, prevent adhesions, and gradually restore the active flexion and extension function of the fingers. Currently, the mainstream clinical rehabilitation methods still rely on rubber bands, elastic bands, or simple spring-type training devices. These devices are simple in structure and low in cost, but they have fundamental defects: the resistance is fixed and cannot be adaptively adjusted. In the early postoperative period, patients have weak muscle strength, and fixed high resistance can easily cause pain, edema, or even tendon re-rupture. In the middle and late stages of rehabilitation, if the resistance cannot be increased with the increase of muscle strength, the training stimulation is insufficient, leading to stagnation in functional recovery.

[0003] In recent years, although some intelligent rehabilitation devices have attempted to introduce motors or pneumatic systems to achieve adjustable resistance, they generally suffer from two major bottlenecks: First, they lack the ability to independently perceive and respond to the movement state of individual fingers. Most devices uniformly adjust resistance on a whole-hand basis, ignoring the clinical reality that tendon injuries of multiple fingers are often asymmetrical and that the recovery progress of each finger varies significantly, making it difficult to achieve precise rehabilitation "tailored to each finger." Second, the human-computer interaction adaptability is poor. In order to collect motion data, devices often embed angle or pressure sensors in the finger sleeves. However, the contour of the finger changes continuously during dynamic flexion, and the sensors are prone to displacement, loosening, or local compression, causing signal drift or patient discomfort, which seriously affects the reliability of monitoring and training compliance. To address this, we propose an intelligent resistance force adaptive training device for postoperative rehabilitation of hand tendons. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent resistance adaptive training device for postoperative rehabilitation of hand tendons, in order to solve the problems mentioned in the background art, that existing postoperative rehabilitation devices for hand tendons mostly use fixed resistance, which cannot be dynamically adjusted according to the muscle strength of a single finger, easily leading to insufficient training or secondary injury; and that the sensors have poor fit and are easy to shift during movement, affecting the monitoring accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent resistance force adaptive training device for postoperative rehabilitation of hand tendons, comprising a palm sleeve, a finger sleeve provided at the front end of the palm sleeve, and a sensor provided on the inner wall of the finger sleeve, and a pulling component provided on the back of the finger sleeve, the pulling component comprising a pulling member, a sliding seat and a moving plate, one end of the pulling member being fixed to the surface of the finger sleeve, the other end of the pulling member being connected to the sliding seat, and the sliding seat being connected to the moving plate; It also includes: a connecting seat, which is sleeved on the outer wall of the moving plate. An electromagnetic plate is installed on the inner wall of the connecting seat, and a metal block is pressed against the surface of the electromagnetic plate. The bending angle of the trainee's fingers is monitored by a sensor. During the training process, when the sensor detects that the bending angle of a single set of finger sleeves is not in place, it is determined that the muscle strength of that finger is insufficient. At this time, the controller changes the energization state of the electromagnet corresponding to the surface of the electromagnetic plate, changes the position of the moving plate, realizes the adjustment operation of the tension of the tension component, and thus adjusts the resistance level of the tension component. The inflation adjustment component is located on the back of the sensor. It includes an inflation element, a compression plate, a screw, an air reservoir, and a motor. The sensor monitors the bending angle, and the controller synchronously drives the motor to work according to the angle value. The motor drives the screw to rotate, which causes the compression plate to move upward and compress the air reservoir. This allows the gas inside the air reservoir to enter the inflation element, which inflates and compresses the sensor, making the sensor fit against the back of the finger. This allows the pressure of the sensor to be adjusted synchronously according to the bending angle of the finger.

[0006] Among them, the end of the tension member away from the sliding seat is successively fitted with limiting sleeve three, limiting sleeve two and limiting sleeve one, and limiting sleeve one, limiting sleeve two and limiting sleeve three are all fixed on the surface of the finger sleeve. Limiting sleeve one, limiting sleeve two and limiting sleeve three are distributed sequentially along the arc-shaped contour of the back side of the finger sleeve and fixed to the outer surface of the arc-shaped segment.

[0007] Among them, metal block one is fixed to the side of the moving plate, electromagnetic plate one is fixed to the inner wall of the connecting seat, and electromagnet one, electromagnet two and electromagnet three are arranged sequentially on the surface of electromagnetic plate one.

[0008] The inflatable component includes an airbag one, a connecting bag, and an airbag two. Airbag one and airbag two are connected through the connecting bag. Both airbag one and airbag two are set as flat elliptical airbags, with their outward convex arc surface facing the sensor abutting against the back side of the sensor, so as to press the sensor tightly against the finger surface when inflated.

[0009] Among them, an inflation tube is provided on the side of the second airbag, and a connecting tube is provided on the end face of the inflation tube, and the connecting tube is connected to the air storage bag.

[0010] The compression plate is located at the bottom of the air reservoir, and the screw is threaded inside the compression plate. One end of the screw is rotatably connected to the inner wall of the protective cover, and the other end of the screw is fixedly connected to the output shaft of the motor. The protective cover is fixed to the inner wall of the palm sleeve. The connecting pipe, air reservoir, and compression plate are all located inside the protective cover. A buffer pad is fixed to the end of the protective cover away from the sensor.

[0011] The connecting pipe is equipped with a flow regulating component, which includes a baffle one and a baffle two. The baffle one is fixed to the inner wall of the connecting pipe, and the baffle two is rotatably connected to the inner wall of the connecting pipe. The baffle one and the baffle two are in contact with each other.

[0012] The connecting pipe has an air vent on the side near the inflation pipe. Baffle 1 has an air inlet 1 connected to the air vent, and baffle 2 has an air inlet 2. The air inlets 1 and 2 are initially misaligned. By rotating baffle 2, the overlapping area of ​​the two can be changed to adjust the gas flow rate.

[0013] Among them, a metal sheet is fixed to the outer wall of the baffle, and the metal sheet presses against the surface of the electromagnetic plate. The electromagnetic plate is set on the inner wall of the connecting pipe.

[0014] Among them, electromagnets four, five and six are arranged sequentially on the surface of electromagnetic plate two. According to the bending angle of a single group of fingers, the controller controls the energizing state of electromagnets four, five and six. By changing the energizing state of electromagnets four, five and six, the metal plate two is driven by magnetic attraction to rotate baffle two to the corresponding angle, thereby adjusting the inflation amount of the inflatable component.

[0015] This invention has at least the following beneficial effects: Achieving dual adaptive adjustment of resistance and fit: By monitoring the bending angle of a single finger in real time through sensors, the system can independently judge the muscle strength and mobility of each finger, and automatically adjust the resistance of the corresponding tension component and the pressure of the airbag against the sensor, truly achieving personalized rehabilitation training for each finger, avoiding overload or undertraining caused by "one-size-fits-all" training.

[0016] Ensuring safe rehabilitation and preventing secondary injuries: When a finger is unable to complete a predetermined movement due to insufficient muscle strength, pain avoidance, or joint stiffness, the system immediately identifies and automatically reduces the training resistance of that finger, effectively preventing tendon re-rupture or joint damage caused by forced traction, and significantly improving the safety of early postoperative rehabilitation.

[0017] Dynamically optimized sensor fit performance: An innovative airbag adaptive inflation mechanism is introduced to adjust the pressure on the sensor in real time according to the degree of finger flexion—the more the finger is flexed, the greater the fit force, ensuring that the sensor is always in close contact with the skin surface, greatly improving the accuracy and stability of motion data acquisition, and providing a reliable basis for accurately assessing rehabilitation progress.

[0018] Fully automated operation, reducing reliance on medical care: The entire training process requires no manual intervention. From resistance setting and fit adjustment to abnormal response, everything is intelligently completed by the controller, reducing the workload of rehabilitation therapists and supporting patients' self-training at home, thus improving rehabilitation compliance and efficiency.

[0019] Compact structure and excellent ergonomics: All drive and adjustment components are integrated inside the palm and finger sleeves, with a simple appearance and comfortable wear; the electromagnetic-mechanical linkage design provides rapid response and precise positioning, and there are no exposed transmission parts, making it safe and reliable to use.

[0020] Supports multi-level fine adjustment to adapt to different rehabilitation stages: Through the combination control of multiple sets of electromagnets and baffles, the resistance and inflation volume can be adjusted in multiple levels, which can flexibly match the rehabilitation needs of different stages such as the postoperative acute phase, recovery phase and functional enhancement phase, extend the service life of the equipment and improve its clinical applicability. Attached Figure Description

[0021] Figure 1 This is a first three-dimensional schematic diagram of the present invention; Figure 2 This is a second three-dimensional schematic diagram of the present invention; Figure 3 This is a partial structural diagram of the pull component of the present invention; Figure 4 This is a partial structural schematic diagram of the limiting sleeve of the present invention; Figure 5 for Figure 4 Enlarged view of region A in the middle; Figure 6 This is a partial structural schematic diagram of the protective cover of the present invention; Figure 7 This is a partial structural cross-sectional view of the finger sleeve of the present invention; Figure 8 This is a partial structural cross-sectional view of the protective cover of the present invention; Figure 9 This is a partial structural schematic diagram of airbag one and airbag two of the present invention; Figure 10 This is a partial structural cross-sectional view of the connecting pipe and flow regulating assembly according to Embodiment 2 of the present invention; Figure 11 This is a partial structural cross-sectional view of the connecting pipe in Embodiment 2 of the present invention.

[0022] In the diagram: 11. Palm glove; 12. Finger glove; 13. Sensor; 2. Pulling assembly; 21. Pulling component; 22. Sliding seat; 23. Moving plate; 24. Connecting seat; 25. Metal block one; 26. Electromagnetic plate one; 27. Electromagnet one; 28. Electromagnet two; 29. ​​Electromagnet three; 31. Limiting sleeve one; 32. Limiting sleeve two; 33. Limiting sleeve three; 4. Inflation adjustment assembly; 41. Airbag one; 42. Connecting bag; 43. Airbag II; 44. Inflation tube; 45. Connecting tube; 46. Air reservoir; 47. Extrusion plate; 48. Screw; 49. Motor; 5. Protective cover; 6. Flow regulating component; 61. Vent; 62. Baffle I; 63. Air outlet I; 64. Baffle II; 65. Air outlet II; 66. Metal sheet II; 67. Electromagnet II; 71. Electromagnet IV; 72. Electromagnet V; 73. Electromagnet VI; 8. Buffer pad. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0024] Please see Figures 1 to 9 The present invention provides a technical solution: an intelligent resistance force adaptive training device for postoperative rehabilitation of hand tendons, including a palm sleeve 11, a finger sleeve 12 is provided at the front end of the palm sleeve 11, and a sensor 13 is provided on the inner wall of the finger sleeve 12. A pulling component 2 is provided on the back of the finger sleeve 12. The pulling component 2 includes a pulling member 21, a sliding seat 22 and a moving plate 23. One end of the pulling member 21 is connected to the sliding seat 22, and the sliding seat 22 is connected to the moving plate 23. It also includes: a connecting seat 24, which is sleeved on the outer wall of the movable plate 23. The inner wall of the connecting seat 24 is provided with an electromagnetic plate 26, and a metal block 25 is pressed against the surface of the electromagnetic plate 26. The bending angle of the trainee's fingers is monitored by the sensor 13. During the training process, when the sensor 13 detects that the bending angle of a single set of finger sleeves 12 is not in place, it is determined that the finger muscle strength is insufficient. At this time, the controller changes the energization state of the electromagnet corresponding to the surface of the electromagnetic plate 26, changes the position of the movable plate 23, realizes the adjustment operation of the tension member 21, and thus adjusts the resistance level of the tension member 21. The inflation adjustment component 4 is located on the back of the sensor 13. The inflation adjustment component 4 includes an inflation component, a compression plate 47, a screw 48, an air reservoir 46, and a motor 49. The sensor 13 monitors the bending angle, and the controller synchronously drives the motor 49 to work according to the angle value. The motor 49 drives the screw 48 to rotate. The rotation of the screw 48 causes the compression plate 47 to move upward and compress the air reservoir 46, so that the gas inside the air reservoir 46 enters the inflation component. The inflation component bulges up and compresses the sensor 13, so that the sensor 13 fits against the back of the finger, realizing the synchronous adjustment of the compression force of the sensor 13 according to the bending angle of the finger.

[0025] The end of the tension member 21 away from the sliding seat 22 is sequentially fitted with a limiting sleeve 33, a limiting sleeve 22 and a limiting sleeve 1 31, and the limiting sleeve 1 31, the limiting sleeve 22 and the limiting sleeve 33 are all fixed on the surface of the finger sleeve 12. The limiting sleeve 1 31, the limiting sleeve 22 and the limiting sleeve 33 are sequentially distributed along the arc-shaped contour of the back side of the finger sleeve 12 and fixed to the outer surface of the arc-shaped segment.

[0026] Metal block 25 is fixed to the side of movable plate 23, electromagnetic plate 26 is fixed to the inner wall of connecting seat 24, and electromagnet 27, electromagnet 28 and electromagnet 3 29 are arranged sequentially on the surface of electromagnetic plate 26.

[0027] The inflatable component includes an airbag 41, a connecting bag 42, and an airbag 43. The airbag 41 and the airbag 43 are connected through the connecting bag 42. Both the airbag 41 and the airbag 43 are configured as flat elliptical airbags. Their convex arc surfaces facing the sensor 13 abut against the back side of the sensor 13 so as to press the sensor 13 against the finger surface when inflated.

[0028] An inflation tube 44 is provided on the side of the second airbag 43, and a connecting tube 45 is provided on the end face of the inflation tube 44, and the connecting tube 45 is connected to the air storage bag 46.

[0029] The extrusion plate 47 is located at the bottom of the air reservoir 46. The screw 48 is threadedly connected to the inside of the extrusion plate 47. One end of the screw 48 is rotatably connected to the inner wall of the protective cover 5, and the other end of the screw 48 is fixedly connected to the output shaft of the motor 49. The protective cover 5 is fixed to the inner wall of the palm sleeve 11. The connecting pipe 45, the air reservoir 46 and the extrusion plate 47 are all located inside the protective cover 5. A buffer pad 8 is fixed to the end of the protective cover 5 away from the sensor 13.

[0030] During training, sensor 13 monitors the bending angle of a single finger of the trainee in real time. In the initial state, electromagnet 3 29 is energized, and metal block 1 25 is tightly attracted to electromagnet 3 29 under magnetic attraction, so that tension component 21 maintains the preset initial tension, corresponding to standard training resistance.

[0031] When a finger corresponding to a certain set of finger sleeves 12 fails to complete the predetermined flexion action, i.e., the flexion angle does not reach the target value, the controller determines that the finger may have rehabilitation obstacles such as insufficient muscle strength, pain avoidance, or joint stiffness. At this time, the system automatically executes the first level of resistance reduction: the controller cuts off the power supply to electromagnet 3 29 to demagnetize it, and at the same time starts electromagnet 2 28 to be energized; under the action of magnetic force, electromagnet 2 28 attracts metal block 1 25 to move in its direction, driving the moving plate 23 to move synchronously, and then pulls the tension member 21 to contract towards the finger sleeve 12 through the sliding seat 22, thereby reducing the tension of the tension member 21, reducing the pulling resistance to the finger sleeve 12, and ensuring that the training process is safe and painless.

[0032] If the finger still cannot complete the target flexion angle after the resistance is reduced, the system further performs a second level of resistance reduction: the controller turns off electromagnet 28 and turns on electromagnet 27; the metal block 25 is attracted by electromagnet 27, which drives the moving plate 23 to continue to move, further reducing the tension of the tensioning component 21, achieving a greater reduction in resistance to adapt to the patient's current functional state and avoid overload.

[0033] Meanwhile, sensor 13 continuously transmits the finger bending angle signal to the controller. The controller dynamically adjusts the inflation adjustment component 4 based on the real-time angle data: when the degree of finger bending increases, the controller drives motor 49 to work, and motor 49 drives screw 48 to rotate; under the action of threaded transmission, screw 48 pushes the extrusion plate 47 to move upward, thereby extruding the air storage bag 46. After the air storage bag 46 is compressed, the internal gas enters the second air bag 43 through the connecting pipe 45 and the inflation pipe 44 in sequence, and then flows into the first air bag 41 through the connecting bag 42, so that the first air bag 41 and the second air bag 43 inflate synchronously.

[0034] As the convex surfaces of airbag 1 41 and airbag 2 43 press against the back of sensor 13, their inflation volume increases with the increase of the finger bending angle, thereby applying greater reverse pressure to sensor 13, forcing sensor 13 to fit more tightly against the back of the finger. This achieves an adaptive feedback mechanism of "the deeper the bend, the tighter the fit", effectively improving sensing accuracy and wearing comfort, and ensuring the reliability of rehabilitation training data and the stability of human-computer interaction. Example 2

[0035] Please see Figures 10 to 11 The inside of the connecting pipe 45 is provided with a flow regulating component 6, which includes a first baffle 62 and a second baffle 64. The first baffle 62 is fixed to the inner wall of the connecting pipe 45, and the second baffle 64 is rotatably connected to the inner wall of the connecting pipe 45. The first baffle 62 and the second baffle 64 fit together.

[0036] A vent 61 is provided on the side of the connecting pipe 45 near the inflation pipe 44. A first baffle 62 is provided with a first air outlet 63 that communicates with the vent 61. A second baffle 64 is provided with a second air outlet 65. The first air outlet 63 and the second air outlet 65 are initially misaligned. By rotating the second baffle 64, the overlapping area of ​​the two can be changed to adjust the gas flow rate.

[0037] A metal sheet 266 is fixed to the outer wall of the baffle 2 64, and the metal sheet 2 66 presses against the surface of the electromagnetic plate 2 67, which is located on the inner wall of the connecting pipe 45.

[0038] Electromagnets 4 71, 5 72, and 6 73 are sequentially arranged on the surface of electromagnetic plate 2 67. According to the bending angle of a single set of fingers, the controller controls the energizing state of electromagnets 4 71, 5 72, and 6 73 accordingly. By changing the energizing state of electromagnets 4 71, 5 72, and 6 73, the metal plate 2 66 is magnetically driven to rotate baffle 2 64 to the corresponding angle, thereby adjusting the inflation amount of the inflatable component.

[0039] In the initial state, electromagnet 673 is energized, and the magnetic force it generates causes metal plate 266 to be tightly attracted to it. At this time, baffle 264 is located at the initial angle position, and air inlet 265 and air inlet 163 maintain the maximum overlapping area, the gas flow cross section is the largest, and airbag 141 and airbag 243 obtain sufficient inflation volume, thereby applying reference pressure to sensor 13.

[0040] During training, sensor 13 monitors the bending angle of each finger in real time. When the bending angle of a single finger is significantly smaller than that of other fingers, the system determines that the finger may have limited movement or poor fit. Sensor 13 transmits the angle signal to the controller, which then performs the first-level adjustment of the fit force: cutting off the power supply to electromagnet 6 73 to demagnetize it, and simultaneously turning on electromagnet 5 72. Under the magnetic attraction, electromagnet 5 72 attracts metal plate 2 66 to move in its direction, causing baffle 2 64 to rotate synchronously. As baffle 2 64 rotates, the overlapping area between air outlet 2 65 on it and air outlet 63 on baffle 1 62 decreases, the gas flow cross section shrinks, and the flow rate decreases, resulting in a reduction in the amount of gas entering airbag 1 41 and airbag 2 43, and a decrease in the degree of inflation, thereby reducing the pressure on sensor 13 and avoiding excessive pressure that could affect the natural flexion of the fingers or cause discomfort.

[0041] If the bending angle of the finger is still significantly low after adjustment, the controller further performs a second-level adjustment of the contact force: electromagnet 5 72 is turned off, and electromagnet 4 71 is energized; metal plate 2 66 is attracted by electromagnet 4 71, which drives baffle 2 64 to continue rotating, further reducing the overlapping area of ​​air inlet 2 65 and air inlet 1 63, reducing the gas flow rate again, and further reducing the inflation of airbag 1 41 and airbag 2 43, thus achieving fine and graded adjustment of the pressure of the sensor 13.

[0042] Through the above mechanism, the system can dynamically and independently adjust the local adhesion force according to the movement performance of a single finger, ensuring that the sensor 13 always adheres to the back of the finger with appropriate pressure—neither too loose to cause signal distortion, nor too tight to cause pain or restrict movement, thus significantly improving the safety, comfort and data accuracy of rehabilitation training.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons, comprising: A palm sleeve, the front end of which is provided with a finger sleeve, and the inner wall of the finger sleeve is provided with a sensor. The back of the finger sleeve is provided with a pulling assembly, which includes a pulling member, a sliding seat and a moving plate. One end of the pulling member is fixed to the surface of the finger sleeve, and the other end of the pulling member is connected to the sliding seat. The sliding seat is connected to the moving plate. Its characteristic is that it also includes: A connecting seat is sleeved on the outer wall of the moving plate. An electromagnetic plate is provided on the inner wall of the connecting seat, and a metal block is pressed against the surface of the electromagnetic plate. The bending angle of the trainee's fingers is monitored by a sensor. During the training process, when the sensor detects that the bending angle of a single finger sleeve is not in place, it is determined that the finger muscle strength is insufficient. At this time, the controller changes the energization state of the electromagnet corresponding to the surface of the electromagnetic plate, changes the position of the moving plate, realizes the adjustment operation of the tension of the tension component, and thus adjusts the resistance level of the tension component. An inflation adjustment assembly is located on the back of the sensor. The inflation adjustment assembly includes an inflation component, a compression plate, a screw, an air reservoir, and a motor. The sensor monitors the bending angle, and the controller synchronously drives the motor to work according to the angle value. The motor drives the screw to rotate, and the rotation of the screw causes the compression plate to move upward and compress the air reservoir. This allows the gas inside the air reservoir to enter the inflation component, causing the inflation component to bulge and compress the sensor, making the sensor fit against the back of the finger. This allows the pressure of the sensor to be adjusted synchronously according to the bending angle of the finger.

2. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 1, characterized in that: The end of the tension member away from the sliding seat is sequentially fitted with a limiting sleeve three, a limiting sleeve two, and a limiting sleeve one, and the limiting sleeve one, the limiting sleeve two, and the limiting sleeve three are all fixed on the surface of the finger sleeve. The limiting sleeve one, the limiting sleeve two, and the limiting sleeve three are sequentially distributed along the arc-shaped contour of the back side of the finger sleeve and fixed to the outer surface of the arc-shaped segment.

3. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 1, characterized in that: The metal block is fixed to the side of the moving plate, the electromagnetic plate is fixed to the inner wall of the connecting seat, and the surface of the electromagnetic plate is sequentially provided with electromagnet one, electromagnet two and electromagnet three.

4. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 1, characterized in that: The inflatable component includes an airbag one, a connecting bag, and an airbag two. The airbag one and the airbag two are connected through the connecting bag, and both the airbag one and the airbag two are configured as flat elliptical airbags. Their outward convex arc surface facing the sensor abuts against the back side of the sensor so as to press the sensor tightly against the finger surface when inflated.

5. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 4, characterized in that: An inflation tube is provided on the side of the second airbag, and a connecting tube is provided on the end face of the inflation tube, and the connecting tube is connected to the air storage bag.

6. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 1, characterized in that: The extrusion plate is located at the bottom of the air reservoir. The screw is threaded inside the extrusion plate. One end of the screw is rotatably connected to the inner wall of the protective cover, and the other end of the screw is fixedly connected to the output shaft of the motor. The protective cover is fixed to the inner wall of the palm sleeve. The connecting tube, the air reservoir, and the extrusion plate are all located inside the protective cover. A buffer pad is fixed to the end of the protective cover away from the sensor.

7. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 5, characterized in that: The connecting pipe is equipped with a flow regulating component, which includes a first baffle and a second baffle. The first baffle is fixed to the inner wall of the connecting pipe, and the second baffle is rotatably connected to the inner wall of the connecting pipe. The first baffle and the second baffle are in contact with each other.

8. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 7, characterized in that: The connecting pipe has an air vent on the side near the inflation pipe. The baffle one has an air inlet one that communicates with the air vent, and the baffle two has an air inlet two. The air inlet one and the air inlet two are initially misaligned. By rotating the baffle two, the overlapping area of ​​the two can be changed to adjust the gas flow rate.

9. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 8, characterized in that: A metal sheet is fixed to the outer wall of the second baffle, and the metal sheet presses against the surface of the second electromagnetic plate. The second electromagnetic plate is disposed on the inner wall of the connecting pipe.

10. The intelligent adaptive resistance training device for postoperative rehabilitation of hand tendons according to claim 9, characterized in that: Electromagnets four, five, and six are sequentially arranged on the surface of the electromagnetic plate two. According to the bending angle of a single set of fingers, the controller controls the energizing state of electromagnets four, five, and six accordingly. By changing the energizing state of electromagnets four, five, and six, the metal plate two is driven by magnetic attraction to rotate the baffle two to the corresponding angle, thereby adjusting the inflation amount of the inflatable component.

Images