A lying position knee joint training auxiliary device

Abstract

The application discloses a lying position knee joint training auxiliary device, which comprises a supporting plate and a locking device. The supporting plate comprises leg supporting plates and movable supporting plates, and at least two leg supporting plates and movable supporting plates are arranged. The two leg supporting plates are pivotally connected with each other, and the two leg supporting plates are arranged between the two movable supporting plates. The movable supporting plates are pivotally connected with the leg supporting plates. The locking device comprises a guide block and a plug-in rod. The guide block is arranged on the leg supporting plate, and the guide block is provided with a guide hole. The plug-in rod is slidably arranged in the guide hole. The movable supporting plate is provided with a plug-in piece, and the plug-in piece is provided with a plug-in hole. The plug-in hole is located on the moving path of the plug-in rod. The two leg supporting plates are pivotally connected with each other, so that the included angle between the two leg supporting plates can be changed along with the flexion and extension of the knee joint, and the knee joint activity training in the lying position is realized. When the plug-in rod is inserted into the plug-in hole, the movable supporting plate and the leg supporting plate are integrated, the movable supporting plate becomes the extension section of the leg supporting plate, and the supporting length can be adjusted.

Description

Technical Field

[0001] This invention relates to the field of medical rehabilitation training equipment technology, and in particular to a supine knee joint training auxiliary device. Background Technology

[0002] Patients who require prolonged bed rest due to pathological factors such as trauma, postoperative recovery, or neurological disorders have their knee joints in a state of continuous immobilization. Under these conditions, the knee joint is prone to a series of secondary pathological changes, including limited range of motion, progressive muscle weakness, soft tissue contractures, and joint function degeneration. Therefore, targeted knee joint training in a supine position is a necessary prerequisite for maintaining joint mobility, delaying muscle weakness, and preventing functional loss.

[0003] Existing rehabilitation training devices are often designed for specific populations (such as adults or children) or specific pathological stages, making it difficult to achieve broad adaptability and universality when facing significant differences in bone size, limb circumference, and joint range of motion among patients of different ages. For patients in the early postoperative inflammatory and edematous stage, low-intensity and precisely controllable passive movement patterns are needed; for those in the mid-to-late recovery stages, a transition to active resistance or active assistance exercises is required. However, existing knee joint training devices struggle to cover the diverse needs of different populations. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a supine knee joint training assistive device that covers people with different needs.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A supine knee joint training assistive device, comprising:

[0007] A support plate, comprising a leg support plate and a movable support plate, wherein at least two leg support plates and two movable support plates are provided. The two leg support plates are respectively used to support the thigh and the calf. The two leg support plates are pivotally connected to each other so that the included angle between the two leg support plates can be changed. The two leg support plates are located between the two movable support plates. The movable support plate is pivotally connected to the leg support plate and located in the extension direction of the leg support plate so that the movable support plate and the leg support plate can swing freely.

[0008] A locking device includes a guide block and a connecting rod. The guide block is disposed on the leg support plate and has a guide hole. The axial direction of the guide hole is the same as the extension direction of the leg support plate. The connecting rod slides through the guide hole. The movable support plate has a connector with a connector hole located on the movement path of the connecting rod. The connector hole is used for the connecting rod to be inserted to prevent the movable support plate and the leg support plate from swinging relative to each other.

[0009] Furthermore, the supine knee joint training assistive device also includes a lifting rod and a winch. The leg support plate is provided with a pivot hole, and the pivot shaft between the two leg support plates is coaxially arranged with the axis of the pivot hole. The lifting rod passes through the pivot hole and is coaxially arranged with the pivot hole. The lifting rod is connected to the winch by a connecting rope so as to change the included angle between the two leg support plates by driving the lifting rod to rise or fall.

[0010] Furthermore, the supine knee joint training assistive device also includes a lifting frame and a pulley, the winch is located below the lifting frame, the pulley is located at the top of the lifting frame, and the connecting rope is wound around the pulley and connected to the lifting rod.

[0011] Furthermore, multiple movable support plates are provided, and the multiple movable support plates are arranged sequentially along the extension direction of the leg support plate, with adjacent movable support plates pivotally connected.

[0012] Furthermore, the supine knee joint training assistive device also includes a base, the base is provided with a guide rail and a slider, the length direction of the guide rail is the same as the extension direction of the support plate, multiple sliders are provided, multiple sliders are slidably connected to the guide rail, multiple sliders are respectively corresponding to and cooperate with multiple movable support plates, and the movable support plates are supported by the sliders.

[0013] Furthermore, a limiting rod is provided between the plurality of sliders, and the length of the limiting rod is the same as the distance between the plurality of movable support plates, so that the distance between the plurality of sliders is equal to the distance between the movable support plates.

[0014] Furthermore, one of the movable support plates, located away from the leg support plate, is fixedly connected to the slider.

[0015] Furthermore, two guide rails are provided, located on both sides of the base. Both guide rails are slidably connected to multiple sliders. The movable support plate is correspondingly engaged with the two sliders, so that the two sides of the movable support plate are supported by the sliders. Two locking devices are provided, located on opposite sides of the leg support plate. The opposite sides of the movable support plate are provided with plug-in members that engage with the plug-in rod, so that the two sides of the movable support plate can be restricted from swinging by the plug-in rod.

[0016] Furthermore, the top of the leg support plate is provided with a first pad, and the top of the movable support plate is provided with a second pad. The first pad has a limiting part, which is used to prevent the patient's leg from slipping.

[0017] Furthermore, the first pad is provided with an adjustable strap for securing the patient's leg.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The support system includes a leg support plate and a movable support plate, with at least two of each. The two leg support plates support the thigh and calf respectively, and are pivotally connected to each other to allow for changing the angle between them. The two leg support plates are positioned between the two movable support plates, which are pivotally connected to and located in the extension direction of the leg support plates, allowing for free swinging between them. The pivotal connection of the two leg support plates allows the angle between them to change with knee flexion and extension, enabling knee joint movement training in a supine position. The movable support plate, pivotally connected to the leg support plates, allows the heel to move along the surface of the movable support plate when the knee is flexed. The movable support plate moves accordingly and remains under the heel, creating a barrier between the heel and the bed or floor, preventing direct friction between the heel and the floor and reducing the risk of skin abrasion.

[0020] 2. The locking device includes a guide block and a connecting rod. The guide block is located on the leg support plate and has a guide hole. The axis of the guide hole is in the same direction as the extension direction of the leg support plate. The connecting rod slides through the guide hole. The movable support plate has a connector with a connector hole located on the movement path of the connecting rod. The connector hole is used for the connecting rod to be inserted, preventing the movable support plate and the leg support plate from swinging against each other. Through the cooperation of the guide block, connecting rod, and connector, when the connecting rod is inserted into the connector hole, the movable support plate and the leg support plate form a single unit, with the movable support plate becoming an extension of the leg support plate, thus adjusting the support length. When the connecting rod is withdrawn, the movable support plate resumes free swing and independently performs the padding protection function. This structure allows the same device to meet the support length requirements of patients with different body shapes while also ensuring skin protection, resulting in a compact structure and integrated functions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the supine knee joint training assistive device of the present invention;

[0022] Figure 2 for Figure 1 The side view shown;

[0023] Figure 3 for Figure 2 The sectional view shown;

[0024] Figure 4 for Figure 1 The schematic diagram shown indicates that the supine knee joint training assistive device is in a bent knee position.

[0025] In the diagram: 1. Support plate; 101. Leg support plate; 102. Movable support plate; 2. Guide block; 3. Connecting rod; 4. Connecting piece; 5. Lifting rod; 6. Winch; 7. Connecting rope; 8. Lifting frame; 9. Pulley; 10. Base; 11. Guide rail; 12. Slider; 13. Limiting rod; 14. First protective pad; 15. Second protective pad; 16. Adjustable strap. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] See Figures 1-4 A preferred embodiment of the present invention provides a supine knee joint training assistive device, comprising: a support plate 1 and a locking device.

[0030] The support plate 1 includes a leg support plate 101 and a movable support plate 102. At least two leg support plates 101 and two movable support plates 102 are provided. The two leg support plates 101 are used to support the thigh and calf respectively, and are pivotally connected to each other so that the included angle between them can be changed. The two leg support plates 101 are located between the two movable support plates 102. The movable support plate 102 is pivotally connected to the leg support plate 101 and located in the extending direction of the leg support plate 101, allowing the movable support plate 102 and the leg support plate 101 to swing freely. The two leg support plates 101 are used to support the thigh and calf respectively, and are pivotally connected to each other, allowing the included angle between them to be changed, thereby achieving knee flexion training. Two leg support plates 101 are positioned between two movable support plates 102. The movable support plates 102 are pivotally connected to the leg support plates 101 and located in the extending direction of the leg support plates 101, allowing the movable support plates 102 and the leg support plates 101 to swing freely. Based on this structure, during knee flexion, the patient's heel moves and always rests on the surface of the movable support plate 102. The movable support plate 102 acts as an isolation layer between the patient's heel and the bed or ground, effectively preventing direct friction between the heel and the supporting surface below, thereby reducing the risk of skin abrasion and improving comfort and safety during training.

[0031] The locking device includes a guide block 2 and a plug rod 3. The guide block 2 is disposed on the leg support plate 101 and has a guide hole. The axial direction of the guide hole is the same as the extension direction of the leg support plate 101. The plug rod 3 slides through the guide hole. The movable support plate 102 is provided with a plug member 4 and a plug hole. The plug hole is located on the moving path of the plug rod 3 and is used for the plug rod 3 to be inserted to prevent the movable support plate 102 and the leg support plate 101 from swinging relative to each other. When the connector rod 3 is inserted into the connector hole, the movable support plate 102 and the leg support plate 101 are locked together and cannot swing relative to each other, forming a single integrated structure. At this time, the movable support plate 102 is equivalent to an extension of the leg support plate 101 in the extension direction, thereby adjusting the support length of the leg support plate 101. When the connector rod 3 is pulled out of the connector hole, the lock is released, and the movable support plate 102 can swing freely relative to the leg support plate 101. At this time, the movable support plate 102 only serves as a padding and protective structure when the heel moves and no longer provides support for the limb. This structure can be flexibly switched according to the differences in lower limb length and training needs of different patients. For example, for adult patients with longer lower limbs, the connecting rod 3 can be inserted into the connecting hole to lock the movable support plate 102 in the outward-extending position, thereby extending the overall support length and ensuring full support for the leg. For pediatric patients, the connecting rod 3 can be kept in the withdrawn state, allowing the movable support plate 102 to swing freely. The support needs can be met using only the length of the leg support plate 101 itself, avoiding the foot being suspended in the air and causing traction on the knee joint. Thus, this locking device, through the cooperation of the connecting rod 3 and the connecting hole, achieves adjustment of the support length, effectively enhancing the device's adaptability to patients of different body shapes.

[0032] Working principle: Two leg support plates 101 support the thigh and lower leg respectively, and are pivotally connected to each other, allowing the angle between the two leg support plates 101 to change, thereby enabling knee flexion or extension training. When the patient performs knee flexion and extension, the leg support plate 101 supporting the thigh and the leg support plate 101 supporting the lower leg rotate relative to each other, allowing the knee joint to gain a range of motion. When the connecting rod 3 is inserted into the connecting hole, the relative swing between the movable support plate 102 and the leg support plate 101 is stopped, and the movable support plate 102 becomes an extension of the leg support plate 101 in the extension direction, which can be adapted to patients with longer legs for training; when the connecting rod 3 is pulled out of the connecting hole, the movable support plate 102 and the leg support plate 101 resume free swing, and the movable support plate 102 can swing with the movement of the heel, which can then be adapted to patients with shorter legs for training.

[0033] Clearly, the two leg support plates 101 are pivotally connected, allowing the angle between them to change with knee flexion and extension, enabling knee joint mobility training in a supine position. The movable support plate 102 is pivotally connected to the leg support plate 101. When the knee is bent, the heel moves along the surface of the movable support plate 102, which moves accordingly and remains under the heel, creating an isolation between the heel and the bed or floor, preventing direct friction and reducing the risk of skin abrasion. The locking device, through the cooperation of the guide block 2, the insertion rod 3, and the insertion piece 4, allows the movable support plate 102 and the leg support plate 101 to function as a single unit when the insertion rod 3 is inserted into the insertion hole. The movable support plate 102 becomes an extension of the leg support plate 101, allowing for adjustment of the support length. When the insertion rod 3 is removed, the movable support plate 102 resumes free swing and independently performs its padding protection function. This structure allows the same device to meet the support length needs of patients with different body shapes while also providing skin protection, resulting in a compact and functionally integrated design.

[0034] In this embodiment, preferably, a supine knee joint training assistive device further includes a lifting rod 5 and a winch 6. The leg support plate 101 is provided with a pivot hole, and the pivot shaft between the two leg support plates 101 is coaxially arranged with the axis of the pivot hole. The lifting rod 5 passes through the pivot hole and is coaxially arranged with it. The lifting rod 5 and the winch 6 are connected by a connecting rope 7, so that the angle between the two leg support plates 101 can be changed by driving the lifting rod 5 up or down. The patient can actively operate the winch 6 to move the lifting rod 5, thereby autonomously controlling the flexion and extension angle and training range of the knee joint, achieving an active training mode. When the patient drives the winch 6 to wind up the connecting rope 7, the lifting rod 5 is pulled upwards, reducing the angle between the two leg support plates 101 and causing passive flexion of the knee joint. At this time, the winch 6 provides upward assistance to help the patient complete the knee flexion movement. When the patient releases the winch 6 in the opposite direction, the lifting rod 5 descends under the action of gravity, increasing the angle between the two leg support plates 101 and extending the knee joint. The patient can control the descent speed according to their own muscle strength to adjust the extension resistance. For patients in the recovery period with weak muscle strength, the assistance provided by the winch 6 can be used to complete the flexion movement, avoiding training interruption due to insufficient strength. For patients whose muscle strength is gradually recovering, the lifting rod 5 can be slowly lowered by controlling the release speed, using their own weight to provide resistance training. For patients who need to maintain training at a specific angle, the position of the lifting rod 5 can be locked by the winch 6 to keep the two leg support plates 101 at a fixed angle, achieving static maintenance training. Therefore, through the cooperation of the lifting rod 5 and the winch 6, this structure provides adjustable assistance or resistance during active training, enabling patients to flexibly control the training intensity according to their own muscle strength and achieve a gradual transition from assisted training to resistance training.

[0035] In this embodiment, preferably, a supine knee joint training assistive device further includes a lifting frame 8 and a pulley 9. The winch 6 is located below the lifting frame 8, and the pulley 9 is located at the top of the lifting frame 8. The connecting rope 7 is wound around the pulley 9 and connected to the lifting rod 5. The winch 6, located below the lifting frame 8, lowers the overall center of gravity of the device, ensuring the lifting frame 8 remains stable during training and preventing the device from tipping over due to a high center of gravity, which could cause knee sprains. The winch 6 is connected to the lifting rod 5 via the connecting rope 7 wound around the pulley 9, allowing the operating position of the winch 6 to be separated from the movement direction of the lifting rod 5. The patient can drive the winch 6 from a position where force can be applied. The guiding effect of the pulley 9 converts the horizontal or oblique pulling force into a vertical upward force on the lifting rod 5, while the rolling friction characteristics of the pulley 9 reduce resistance during transmission. The transmission path and operating interface are optimized by setting up the lifting frame 8 and pulley 9. At the same time, the stability of the device is improved by the low-position arrangement of the winch 6, so that patients can achieve smooth and safe lifting control with less operating force during active training.

[0036] In this embodiment, preferably, multiple movable support plates 102 are provided, and the multiple movable support plates 102 are arranged sequentially along the extension direction of the leg support plate 101, with adjacent movable support plates 102 pivotally connected. Each movable support plate 102 can be locked or unlocked with the leg support plate 101 by a locking device, thereby allowing the support length to be selected between multiple levels. When it is necessary to extend the support length, the plug rod 3 is inserted into the plug hole of the corresponding movable support plate 102, and the movable support plate 102 is rigidly connected to the leg support plate 101 and cannot swing, becoming an extension of the leg support plate 101; when a longer support length is needed, multiple movable support plates 102 can be locked sequentially, so that the support length increases according to the set level. When the plug rod 3 is pulled out, the movable support plate 102 returns to a free swinging state and no longer undertakes the support function. For taller adult patients, one or two movable support plates 102 can be locked sequentially at the farthest end to extend the support length and achieve complete leg support. For adolescent patients in their growth and development stage, the number of locked movable support plates 102 can be gradually increased according to their height growth, so that the support length can be adjusted synchronously with changes in height. Thus, this structure, through the sequential setting and locking of multiple movable support plates 102, achieves multi-level fine adjustment of the support length, effectively expanding the applicability of the device.

[0037] In this embodiment, preferably, a supine knee joint training assistive device further includes a base 10. The base 10 is provided with a guide rail 11 and sliders 12. The length direction of the guide rail 11 is the same as the extension direction of the support plate 1. Multiple sliders 12 are provided, and multiple sliders 12 are slidably connected to the guide rail 11. The multiple sliders 12 are respectively matched with multiple movable support plates 102, and the movable support plates 102 are supported by the sliders 12. When the movable support plate 102 swings with the movement of the heel, the sliders 12 slide synchronously on the guide rail 11, forming a continuous and stable bottom support for the movable support plate 102. This converts the sliding friction between the movable support plate 102 and the base 10 into rolling or low-resistance sliding between the sliders 12 and the guide rail 11, significantly reducing the frictional resistance during the movement of the movable support plate 102. When a patient performs knee flexion and extension exercises, the heel drives the movable support plate 102 to move, and the slider 12 slides smoothly along the guide rail 11, making the swinging process of the movable support plate 102 smoother and avoiding relative sliding or jamming between the heel and the movable support plate 102 due to uneven resistance. For patients with weak muscle strength who need active assisted training, the smooth sliding trajectory allows the patient to complete the knee flexion and extension movements with less voluntary force, avoiding compensation due to excessive resistance. Thus, this structure, through the cooperation of the slider 12 and the guide rail 11, effectively reduces movement resistance while supporting the movable support plate 102, improving the smoothness and controllability of training.

[0038] In this embodiment, preferably, a limiting rod 13 is provided between the plurality of sliders 12. The length of the limiting rod 13 is the same as the distance between the plurality of movable support plates 102, so that the distance between the plurality of sliders 12 is equal to the distance between the movable support plates 102. The limiting rod 13 connects the plurality of sliders 12 into one unit, so that the relative position of each slider 12 on the guide rail 11 is fixed, ensuring that the distance between the sliders 12 is always consistent with the distance between the movable support plates 102. When the plug rod 3 is inserted into the plug hole of a movable support plate 102 and locked with the leg support plate 101, the movable support plate 102 changes from a free swing state to a locked state. At this time, when it is swung to a horizontal position, since the distance between the sliders 12 is the same as the distance between the movable support plates 102, the movable support plate 102 falls exactly on the support surface of the corresponding slider 12, achieving precise alignment support. When multiple movable support plates 102 are locked sequentially, the position of each slider 12 corresponds one-to-one with the position of each movable support plate 102, ensuring that all locked movable support plates 102 can obtain stable bottom support when the knee joint is extended, and preventing some movable support plates 102 from being suspended or tilted due to spacing deviation. This ensures accurate matching between the locked movable support plates 102 and the sliders 12, so that the support structure maintains stable force transmission even in the length adjustment state.

[0039] In this embodiment, preferably, one of the movable support plates 102 furthest from the leg support plate 101 is fixedly connected to the slider 12. Based on this structure, a defined positional relationship is formed between the movable support plate 102 furthest from the leg support plate 101 and the slider 12, and its position relative to the base 10 remains fixed, not participating in the switching operation of the locking device. When other movable support plates 102 are locked sequentially via the plug-in rod 3, the fixedly connected movable support plate 102 is always located at the farthest end, serving as the final endpoint for heel support. This ensures that the heel receives a stable support surface regardless of the number of locked intermediate movable support plates 102. Simultaneously, since the movable support plate 102 is fixedly connected to the slider 12, the position of the slider 12 on the guide rail 11 is determined. When other movable support plates 102 are locked, their corresponding sliders 12 maintain a distance from the fixed slider 12 due to the action of the limiting rod 13. This ensures that all locked movable support plates 102 accurately rest on the support surface of their respective sliders 12, preventing the failure of the fit between the end movable support plate 102 and the slider 12 due to cumulative displacement of the slider 12. By fixing the farthest movable support plate 102 to the slider 12, the reliability of the end support and the datum positioning of the slider 12 are guaranteed during the support length adjustment process, ensuring a stable fit between the multi-stage adjustment structure and the slider 12.

[0040] In this embodiment, preferably, two guide rails 11 are provided, and the two guide rails 11 are located on both sides of the base 10. Both guide rails 11 are slidably connected to a plurality of sliders 12. The movable support plate 102 is correspondingly engaged with the two sliders 12 so that the two sides of the movable support plate 102 are supported by the sliders 12. Two locking devices are provided, and the two locking devices are located on opposite sides of the leg support plate 101. The opposite sides of the movable support plate 102 are provided with plug-in members 4 that cooperate with the plug-in rod 3 so that the two sides of the movable support plate 102 can be restricted from swinging by the plug-in rod 3. The movable support plate 102 is supported on both sides by sliders 12 on two guide rails 11, forming a double-sided support. This ensures that the movable support plate 102 is evenly supported as it moves with the heel, preventing movement stagnation caused by unilateral suspension or tilting. Simultaneously, the double-sided locking device locks both sides of the movable support plate 102, restricting its swing in the locked state and preventing twisting or deflection due to unilateral locking. This ensures a stable and rigid connection between the movable support plate 102 and the leg support plate 101. For heavier patients, the double-sided sliders 12 distribute the pressure on the movable support plate 102, preventing overload on one side and resulting in poor sliding or structural deformation. The cooperation of the double-sided guide rails 11 and the double-sided locking device enhances the stability of the movable support plate 102's movement and locking, ensuring stable and reliable support under different usage conditions.

[0041] In this embodiment, preferably, the top of the leg support plate 101 is provided with a first pad 14, and the top of the movable support plate 102 is provided with a second pad 15. The first pad 14 has a limiting part, which is used to prevent the patient's leg from slipping. The first pad 14 and the second pad 15 form flexible contact layers on the supporting surfaces of the leg support plate 101 and the movable support plate 102, respectively, to disperse the pressure between the patient's lower limb and the support structure and reduce local pressure discomfort caused by prolonged training. The limiting part is provided on the first pad 14 to provide lateral restraint to the thigh or calf placed on it, preventing the leg from slipping off the support plate 1 due to limb swing or muscle contraction during knee flexion and extension. When the patient performs passive training, the limiting part can maintain the correct placement of the lower limb on the support plate 1 and prevent deviation of the training trajectory caused by slippage; while when the patient performs active resistance training, the limiting part can resist the lateral component force generated when the limb exerts force, ensuring that the force is effectively transmitted to the training structure rather than consumed by limb displacement. Meanwhile, the restraint provides additional security during training, reducing anxiety caused by fear of slippage and allowing patients to focus more on executing training movements. This structure, through the flexible support of the first pad 14 and the second pad 15 combined with the lateral restraint of the restraint, enhances training comfort while ensuring lower limb stability during training.

[0042] In this embodiment, preferably, the first pad 14 is provided with an adjustable strap 16, which is used to fix the patient's leg. Based on the lateral restraint provided by the limiting part, the adjustable strap 16 further applies circumferential fixation to the patient's lower limb, forming a reliable connection between the leg and the first pad 14, preventing relative displacement due to limb movement or force exertion during training. When the patient performs passive training, the strap can firmly fix the lower limb to the leg support plate 101, ensuring the relative position of the thigh and lower leg remains stable during knee flexion and extension, allowing the training trajectory to be completely guided by the device. When the patient performs active resistance training, the strap can resist the tendency to disengage when the limb actively exerts force, ensuring that the force applied by the patient is effectively transmitted to the support structure, avoiding decreased training efficiency or compensatory movements due to unstable fixation. The adjustable strap 16 can be adjusted according to the patient's limb circumference to meet the fixation needs of patients of different body types, avoiding discomfort caused by excessive tightness or fixation failure due to excessive looseness. Through the synergistic effect of the adjustable strap 16 and the limiting part, the stability of training is improved while taking into account the individual adaptation needs of different patients.

[0043] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A supine knee joint training assistive device, characterized in that, include: A support plate (1) includes a leg support plate (101) and a movable support plate (102). At least two leg support plates (101) and two movable support plates (102) are provided. The two leg support plates (101) are used to support the thigh and the calf respectively. The two leg support plates (101) are pivotally connected to each other so that the included angle between the two leg support plates (101) can be changed. The two leg support plates (101) are located between the two movable support plates (102). The movable support plate (102) is pivotally connected to the leg support plate (101) and located in the extension direction of the leg support plate (101) so that the movable support plate (102) and the leg support plate (101) can swing freely. The locking device includes a guide block (2) and a plug rod (3). The guide block (2) is located on the leg support plate (101). The guide block (2) has a guide hole. The axial direction of the guide hole is the same as the extension direction of the leg support plate (101). The plug rod (3) slides through the guide hole. The movable support plate (102) has a plug member (4). The plug member (4) has a plug hole. The plug hole is located on the moving path of the plug rod (3). The plug hole is used for the plug rod (3) to be plugged in, so as to prevent the movable support plate (102) and the leg support plate (101) from swinging against each other.

2. The supine knee joint training assistive device according to claim 1, characterized in that, The supine knee joint training assist device further includes a lifting rod (5) and a winch (6). The leg support plate (101) is provided with a pivot hole. The pivot shaft between the two leg support plates (101) is coaxially arranged with the axis of the pivot hole. The lifting rod (5) passes through the pivot hole and is coaxially arranged with the pivot hole. The lifting rod (5) and the winch (6) are connected by a connecting rope (7) so as to change the included angle between the two leg support plates (101) by driving the lifting rod (5) to rise or fall.

3. The supine knee joint training assistive device according to claim 2, characterized in that, The supine knee joint training auxiliary device further includes a lifting frame (8) and a pulley (9). The winch (6) is located below the lifting frame (8), the pulley (9) is located at the top of the lifting frame (8), and the connecting rope (7) is wound around the pulley (9) and connected to the lifting rod (5).

4. The supine knee joint training assistive device according to claim 1, characterized in that, The movable support plate (102) is provided in multiple ways, and the multiple movable support plates (102) are arranged sequentially along the extension direction of the leg support plate (101), and two adjacent movable support plates (102) are pivotally connected.

5. The supine knee joint training assistive device according to claim 1, characterized in that, The supine knee joint training auxiliary device further includes a base (10), the base (10) is provided with a guide rail (11) and a slider (12), the length direction of the guide rail (11) is the same as the extension direction of the support plate (1), there are multiple sliders (12), the multiple sliders (12) are slidably connected to the guide rail (11), the multiple sliders (12) are respectively corresponding to and cooperate with the multiple movable support plates (102), and the movable support plates (102) are supported by the sliders (12).

6. The supine knee joint training assistive device according to claim 5, characterized in that, A limiting rod (13) is provided between the plurality of sliders (12), and the length of the limiting rod (13) is the same as the distance between the plurality of movable support plates (102), so that the distance between the plurality of sliders (12) is equal to the distance between the movable support plates (102).

7. The supine knee joint training assistive device according to claim 5, characterized in that, One of the movable support plates (102) located away from the leg support plate (101) is fixedly connected to the slider (12).

8. The supine knee joint training assistive device according to claim 5, characterized in that, Two guide rails (11) are provided, and the two guide rails (11) are located on both sides of the base (10). Both guide rails (11) are slidably connected to multiple sliders (12). The movable support plate (102) is correspondingly engaged with the two sliders (12) so that the two sides of the movable support plate (102) are supported by the sliders (12). Two locking devices are provided, and the two locking devices are located on opposite sides of the leg support plate (101). The opposite sides of the movable support plate (102) are provided with plug-in parts (4) that cooperate with the plug-in rod (3) so that the two sides of the movable support plate (102) can be restricted from swinging by the plug-in rod (3).

9. The supine knee joint training assistive device according to claim 1, characterized in that, The top of the leg support plate (101) is provided with a first pad (14), and the top of the movable support plate (102) is provided with a second pad (15). The first pad (14) has a limiting part, which is used to prevent the patient's leg from slipping.

10. A supine knee joint training assistive device according to claim 9, characterized in that, The first pad (14) is provided with an adjustable strap (16) for securing the patient's leg.

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