Stable supporting training frame for knee joint rehabilitation treatment

Abstract

The invention relates to the technical field of medical instruments, and discloses a stable supporting training frame for knee joint rehabilitation treatment, which comprises an upper outer bracket, a lower outer bracket, flexible linings arranged on the inner sides of the outer brackets, hanging rings arranged on the outer contours of the outer brackets, bandages arranged on the inner sides of the hanging rings, and a connecting assembly arranged between the two outer brackets, the inflation assembly is arranged on the inner side of the flexible lining, and the adjusting assembly is arranged on the side face of the outer support. According to the stable supporting training frame for knee joint rehabilitation treatment, after the inflation assembly, the adjusting assembly and the wearable device are arranged, an air pump injects air into an air pipe, the air flows into the inflation assembly through a connecting pipe, the inflation assembly is inflated and expands, the space between the flexible lining and the leg is gradually filled, the binding state is gradually tightened, and in the tightening process, the flexible lining and the leg are not prone to falling off. A user can fully feel that the binding elastic band is gradually enhanced, more accurate control can be achieved, the situation that the binding elastic band is too loose or too tight is avoided, and the wearing comfort is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a stable support training frame for knee joint rehabilitation. Background Technology

[0002] In the field of orthopedic rehabilitation, the knee joint, due to its complex structure and high weight-bearing requirements, is susceptible to sports injuries, arthritis, ligament or meniscus injuries, etc. Therefore, the need for stable support and precise protection during its rehabilitation process is extremely urgent. As a core rehabilitation device, the knee joint stabilization training frame is mainly used for patients' rehabilitation training and daily activities. It provides structural support to the knee joint, maintains the correct joint alignment, reduces the load on the joint and surrounding muscles, lowers the risk of secondary injury, and simultaneously assists in the repair of damaged tissues, accelerating the rehabilitation process.

[0003] Currently, most knee support training racks on the market rely on a binding-type fixation structure. They use elastic straps, Velcro, and other components to bind the rack around the knee joint, relying on binding pressure to achieve fixation and support. While these support training racks can meet basic support needs to a certain extent in clinical applications and daily use, they have many inherent defects that seriously affect the user experience and rehabilitation outcomes. Specific problems are as follows: First, the tightness of the binding is difficult to control precisely, easily leading to problems such as excessive tightness compressing muscles and blood vessels. Because existing support training frames mostly use a coarse-grained length adjustment system for the binding straps, lacking a precise feedback and control mechanism for binding pressure, users often overtighten the straps in pursuit of better fixation. Excessive tightness directly compresses the muscle tissue around the knee joint, obstructing blood circulation and causing local soreness and numbness. Long-term use may even lead to muscle atrophy, hindering the rehabilitation process. Simultaneously, blood vessel compression affects lower limb blood circulation, causing swelling and insufficient blood supply, which, especially for postoperative rehabilitation and elderly patients, can lead to serious circulatory disorders and complications, jeopardizing rehabilitation safety.

[0004] Secondly, excessively loose straps will result in poor fixation and ineffective support. If the straps are adjusted too loosely, relative sliding can easily occur between the support frame and the knee joint, making it impossible to stably maintain the correct position and force line of the knee joint and effectively distribute the joint load. When patients are performing rehabilitation training or daily activities, the frame cannot provide reliable stability protection, which will not only reduce the effectiveness of rehabilitation training but may also increase the risk of secondary damage to damaged tissues due to excessive joint movement or abnormal force, thus violating the core design purpose of the support frame.

[0005] Furthermore, muscle contraction during leg movement dynamically affects the tightness of the binding, leading to continuous fluctuations in support stability. The knee joint is surrounded by abundant muscles, which undergo periodic contraction and relaxation during walking, bending, and extension, causing dynamic changes in leg circumference. Existing binding-type support training frames have fixed strap lengths, which cannot adapt to the changes in leg circumference caused by muscle contraction: when muscles contract, the leg circumference increases, making the originally suitable straps too tight, causing compression problems again; when muscles relax, the leg circumference decreases, and the straps loosen, resulting in reduced fixation and frame slippage. This dynamic fluctuation in tightness prevents the support training frame from maintaining stable support and fixation, affecting the continuity and safety of rehabilitation training, reducing user comfort due to repeated tightness changes, and even causing some users to abandon wearing it due to discomfort, delaying rehabilitation progress.

[0006] In summary, existing knee rehabilitation stability support training frames suffer from inherent defects due to their binding-type fixation structure. These defects include difficulty in precisely controlling tightness, the impact of muscle contraction dynamics on support stability, and the inability to balance compression risks with effective fixation. Consequently, they fail to fully meet the core requirements of safe, stable, and comfortable support during knee rehabilitation. Therefore, developing a knee rehabilitation stability support training frame that can circumvent these defects, achieve precise tightness adjustment, adapt to changes in muscle contraction, and balance support stability with wearing comfort has become a pressing technical problem to be solved in the field of orthopedic rehabilitation equipment. Summary of the Invention

[0007] Given that existing technologies have problems such as difficulty in accurately controlling the tightness of the binding-type fixation structure of knee joint support training frames, the dynamic impact of muscle contraction on support stability, the inability to balance the risk of compression and the fixation effect, and the inability to meet the needs of safe, stable and comfortable support during rehabilitation, a stable support training frame for knee joint rehabilitation therapy is proposed.

[0008] This application provides a stable support training frame for knee joint rehabilitation therapy. Its purpose is to: avoid the inherent defects of existing binding-type fixation structures, achieve precise adjustment of the tightness of the straps, enable the device to adapt to the dynamic changes in circumference caused by the contraction and relaxation of leg muscles, maintain stable support and fixation effect at all times, effectively avoid the risk of muscle and blood vessel compression while ensuring reliable knee joint support and force line maintenance, take into account the safety, support stability and wearing comfort of rehabilitation use, adapt to the use needs of knee joint rehabilitation training and daily activities, help repair damaged tissues and accelerate the rehabilitation process.

[0009] The technical solution of the present invention is as follows: a stable support training frame for knee joint rehabilitation treatment, comprising upper and lower outer supports, a flexible inner liner disposed on the inner side of the outer supports, a hanging ring disposed on the outer contour of the outer supports, a strap disposed on the inner side of the hanging ring, a connecting component disposed between the two outer supports, and further comprising an inflation component disposed on the inner side of the flexible inner liner, and an adjustment component disposed on the side of the outer supports. The adjustment assembly includes an air pipe disposed on the side of the outer support, an air pump disposed at the bottom of the air pipe, a connecting pipe disposed on the outside of the air pipe, a piston plate disposed inside the air pipe, a sliding column disposed on the top of the piston plate, a splicing pipe disposed on the top of the air pipe, an air exchange port disposed on the outside of the splicing pipe, and a pressure assembly disposed inside the air pipe. The outer support has an insertion hole on its side, through which a connecting pipe passes and communicates with the inflation assembly. The piston plate is located above the connecting pipe, the splicing pipe is connected to the air pipe, and the sliding column is slidably inserted into the splicing pipe.

[0010] Furthermore, the pressure assembly includes a nut disposed at the top of the splice pipe and a compression spring disposed between the nut and the sliding post.

[0011] Furthermore, the pressure assembly includes an upper groove at the bottom of the piston plate, an upper insert block inside the upper groove, a lower groove at the bottom wall of the air tube, a lower insert block inside the lower groove, a tension spring between the lower insert block and the upper insert block, a threaded hole at the outside of the air tube, a retaining groove at the outside of the lower insert block, and a locking bolt at the threaded hole. Both the upper and lower slots are arranged in a ring array around the central axis of the trachea, and the locking bolt extends into the slot.

[0012] Furthermore, the outer bracket has two binding holes on its side, one above the other, and an elastic sleeve is provided on the outside of the air pump. A binding rope that passes through the binding hole is provided on the outside of the elastic sleeve.

[0013] Furthermore, the connecting assembly includes a connecting plate disposed at the connection point of the two outer supports, a limiting slide groove opened at one end of the outer support near the connecting plate, a limiting slide rod disposed on the side of the connecting plate, and an anti-resistance box disposed at the connection point of the outer support and the connecting plate. The limiting slide rod is inserted into the limiting slide groove, and the two outer brackets are connected by interlocking teeth.

[0014] Furthermore, the inflatable component specifically includes an air cushion unevenly distributed along the inner contour of the flexible liner, a groove opened on the side of the air cushion near the flexible liner, an air hole opened on the inner wall of the groove, a ventilation band set on the inner wall of the groove, and an air nozzle set on the end of the ventilation band away from the air cushion. The flexible liner, air cushion, and ventilation strip are all provided with Velcro. The air cushions are arranged in sequence, with the ventilation strip on the preceding air cushion extending to the following air cushion and inserting the corresponding air nozzle into the air hole. A sealing plug is installed in the first air hole of the sequence, and the ventilation strip on the last air cushion of the sequence extends towards the insertion hole and inserts the corresponding air nozzle into the insertion hole.

[0015] Furthermore, a mesh cover is provided on the side of the air cushion away from the flexible liner.

[0016] Furthermore, the outer side of the outer bracket is provided with anti-slip components.

[0017] Furthermore, the anti-slip component includes a buckle disposed on the outer side of the upper outer bracket and a strap disposed on the inner side of the buckle.

[0018] Furthermore, the anti-slip component includes a support arm disposed on the side of the lower outer bracket and a pedal disposed at the bottom of the support arm.

[0019] The beneficial effects of this invention are: 1. By setting up an inflation component and an adjustment component, after wearing the device, the straps are tied to a relatively loose state. Then, the air pump injects air into the air tube. The air flows into the inflation component through the connecting tube. The inflation component inflates and expands, gradually filling the space of the flexible lining and legs, so that the binding gradually tightens. In this tightening process, the user can fully feel the gradual increase in the elasticity of the binding strap, which can achieve more precise control and avoid being too loose or too tight, thus improving wearing comfort.

[0020] 2. By setting a piston plate, when the inflation component is inflated, the pressure inside the air tube and the inflation component increases synchronously and is in a balanced state. When the leg moves, the muscles contract and expand, the inflation component is squeezed, and the air inside it flows back into the air tube. The piston plate resists the pressure component and slides upward in the air tube. Then the pressure on the inflation component disappears, and the air is replenished into the inflation component. In this way, the inflation component can change with the changes in the muscles, further improving the wearing comfort.

[0021] 3. By setting anti-slip components, the external support can be restricted to prevent it from sliding or shifting during exercise, which helps to ensure the training effect of the equipment.

[0022] 4. By setting a compression spring, the compression spring with different resistance can be quickly replaced by opening the nut, making the equipment more compatible with the user. The overall structure is simple, the cost is low, and the probability of failure is also reduced.

[0023] 5. By setting multiple sets of tension springs, during operation, selectively tightening the locking bolts to enter the slots locks the lower insert. Other locking bolts are stored in the threaded holes, and the lower inserts are not locked. Thus, when the piston plate moves, the unlocked lower inserts move synchronously with the connecting pipe, while the locked lower inserts remain in the lower slot, causing the corresponding tension springs to be stretched, generating resistance against the piston plate. In this way, using different numbers of tension springs will produce different resistances, making the equipment more compatible with the user, and the overall equipment is simple to use and more convenient to operate.

[0024] 6. With multiple air cushions, the corresponding adhesion points and number of adhesions can be selected according to the user's muscle contours, so that the device fits the thigh better and is more comfortable to wear. In addition, the ventilation band connects the air cushions, which not only facilitates the installation of multiple air cushions, but also makes the ventilation band pressed between the air cushion and the flexible inner lining during inflation, resulting in a tighter connection and reducing the possibility of detachment and air leakage. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the external support of the present invention; Figure 3 This is a schematic diagram of the adjustment component of the present invention; Figure 4 For the present invention Figure 3 Second-person perspective illustration; Figure 5 This is an exploded view of the adjustment assembly of the present invention; Figure 6 This is a cross-sectional view of the adjustment group in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the compression spring in Embodiment 1 of the present invention; Figure 8 This is a cross-sectional view of the adjustment group in Embodiment 2 of the present invention; Figure 9 This is a cross-sectional view of the adjustment group in Embodiment 3 of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point A in the middle; Figure 11 This is a schematic diagram of the tension spring in Embodiment 3 of the present invention; Figure 12 This is a schematic diagram of the inflation component of the present invention; Figure 13 For the present invention Figure 12 Second-person perspective illustration; Figure 14 This is a schematic diagram of the anti-slip component in Embodiment 5 of the present invention; Figure 15 This is a schematic diagram of the anti-slip component in Embodiment 6 of the present invention.

[0026] In the picture: 1. Outer support; 11. Insertion hole; 12. Binding hole; 2. Flexible inner liner; 3. Hanging ring; 4. Strap; 5. Connecting assembly; 51. Connecting plate; 52. Limiting slide groove; 53. Limiting slide rod; 54. Resistance box; 6. Inflation assembly; 61. Air cushion; 62. Groove; 63. Air hole; 64. Ventilation belt; 65. Air nozzle; 66. Net cover; 7. Adjustment assembly; 71. Air tube; 72. Air pump; 721. Elastic sleeve; 722. Binding rope; 73. Connecting pipe; 74. Piston plate; 75. Sliding column; 76. Splicing pipe; 77. Vent; 78. Nut; 79. Compression spring; 710. Upper groove; 711. Upper insert; 712. Lower groove; 713. Lower insert; 714. Tension spring; 715. Threaded hole; 716. Slot; 717. Locking bolt; 81. Buckle; 82. Shoulder strap; 83. Support arm; 84. Pedal. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Example 1, referring to Figures 1-6 The first embodiment of the present invention provides a stable support training frame for knee joint rehabilitation treatment, including two outer supports 1, a flexible inner liner 2 disposed on the inner side of the outer supports 1, a hanging ring 3 disposed on the outer contour of the outer supports 1, a strap 4 disposed on the inner side of the hanging ring 3, a connecting component 5 disposed between the two outer supports 1, and also includes an inflation component 6 disposed on the inner side of the flexible inner liner 2 and an adjustment component 7 disposed on the side of the outer supports 1.

[0029] The adjustment assembly 7 includes an air pipe 71 disposed on the side of the outer support 1, an air pump 72 disposed at the bottom of the air pipe 71, a connecting pipe 73 disposed on the outside of the air pipe 71, a piston plate 74 disposed inside the air pipe 71, a sliding column 75 disposed on the top of the piston plate 74, a splicing pipe 76 disposed on the top of the air pipe 71, an air exchange port 77 disposed on the outside of the splicing pipe 76, and a pressure assembly disposed inside the air pipe 71.

[0030] Specifically, the outer support 1 is C-shaped and fastens to the user's leg. The upper outer support 1 fastens to the outside of the thigh, with the top fastening behind the thigh, while the lower outer support 1 fastens to the outside of the calf, with the bottom fastening to the front of the calf. The junction of the two outer supports 1 is located near the knee. The flexible inner liner 2 has the same outline as the outer support 1 and is connected to the outer support 1 using multiple support pillars to improve the comfort of wearing the device. Hanging loops 3 are distributed on both sides of the outer support 1 and are rotatably connected to it. The outer side of the strap 4 is sewn with Velcro, and the connecting component 5 is rotatably connected to the outer support 1. An insertion hole 11 is opened on the side of the outer support 1, and the air tube 71 is attached to the outside of the outer support 1. The air tube 71 is close to the inner thigh, where it can lower the pressure. To minimize the possibility of collision with external objects, the air outlet of the air pump 72 is threaded into the bottom of the air pipe 71. The connecting pipe 73 is welded to the air pipe 71 and passes through the insertion hole 11 to communicate with the inflation assembly 6. The piston plate 74 is slidably installed inside the air pipe 71 and is located above the connecting pipe 73. The sliding column 75 is threadedly connected to the piston plate 74. The splicing pipe 76 is threadedly connected to the air pipe 71 and communicates with the air pipe 71. An air guide groove is provided on the outside of the sliding column 75 to connect the air pipe 71 and the splicing pipe 76. The sliding column 75 is slidably inserted into the splicing pipe 76. The sliding column 75 is used for attachment guidance to make the sliding state of the piston plate 74 more stable. Anti-slip parts are provided on the outside of the outer bracket 1.

[0031] By setting up the inflation component 6 and the adjustment component 7, after wearing the device, the strap 4 is tied to a relatively loose state. Then, the air pump 72 injects air into the air tube 71, and the air flows into the inflation component 6 through the connecting tube 73. The inflation component 6 inflates and expands, gradually filling the space between the flexible inner liner 2 and the legs, so that the binding state gradually tightens. In this tightening process, the user can fully feel the gradual increase of the binding elastic band, which can achieve more precise control and avoid the situation of being too loose or too tight, thus improving the wearing comfort.

[0032] Simultaneously, by setting the piston plate 74, when the inflation component 6 is inflated, the pressure inside the air tube 71 and the inflation component 6 increases synchronously and is in a balanced state. When the leg moves, the muscles contract and expand, the inflation component 6 is squeezed, and the air inside it flows back into the air tube 71. The piston plate 74 resists the pressure component and slides upward in the air tube 71. Then the pressure on the inflation component 6 disappears, and the air is replenished back into the inflation component 6. In this way, the inflation component 6 can change with the changes in the muscles, further improving the wearing comfort.

[0033] Specifically, the outer bracket 1 has two binding holes 12 on its side, one above the other. An elastic sleeve 721 is fitted on the outside of the air pump 72. A binding rope 722 that passes through the binding hole 12 is fixedly connected to the outside of the elastic sleeve 721.

[0034] When installing the adjustment component 7, first put the elastic sleeve 721 on the outside of the air pump 72, then pass the binding rope 722 through one binding hole 12 and then through another binding hole 12. Then tighten the binding rope 722 and tie a knot to fix it, so that the air pump 72 is firmly attached to the outer bracket 1 to avoid swaying during the movement.

[0035] The connecting component 5 includes a connecting plate 51 disposed at the connection of the two outer supports 1, a limiting slide groove 52 opened at one end of the outer support 1 near the connecting plate 51, a limiting slide rod 53 disposed on the side of the connecting plate 51, and an anti-resistance box 54 disposed at the connection of the outer support 1 and the connecting plate 51.

[0036] Specifically, the two ends of the connecting plate 51 are rotatably connected to the two outer supports 1 respectively. The limiting groove 52 is arc-shaped, and the center of the arc is located on the rotation axis of the outer support 1. The limiting rod 53 is inserted into the limiting groove 52. When the outer support 1 rotates based on the connecting plate 51, the limiting rod 53 slides in the limiting groove 52, which can make the movement state of the two outer supports 1 more stable. At the same time, it can limit the rotation angle of the outer support 1 and play a good protective role during exercise. The connection between the two outer supports 1 is provided with interlocking teeth. The resistance box 54 is equipped with a resistance spring. The rotation axis of the outer support 1 extends into the resistance box 54 and is connected to the resistance spring, so that the outer support 1 generates a certain resistance when rotating, which can achieve a better exercise effect.

[0037] Example 2, refer to Figures 7-8 This is a second embodiment of the present invention, which differs from the first embodiment in that: the pressure assembly includes a nut 78 disposed on the top of the splicing pipe 76, and a compression spring 79 disposed between the nut 78 and the sliding post 75.

[0038] Specifically, the nut 78 is threadedly connected to the splicing pipe 76, and the compression spring 79 has an installation groove at its bottom. The compression spring 79 is located inside the splicing pipe 76, with its top inserted into the installation groove and its bottom pressing against the top of the sliding column 75. In this way, by opening the nut 78, compression springs 79 with different resistance can be quickly replaced, making the equipment more compatible with the user. The overall structure is simple, the cost is low, and the probability of failure is also reduced.

[0039] The remaining structure is the same as that in Example 1.

[0040] Example 3, referring to Figures 9-10This is the third embodiment of the present invention, which differs from the first embodiment in that: the pressure assembly includes an upper groove 710 opened at the bottom of the piston plate 74, an upper insert 711 disposed inside the upper groove 710, a lower groove 712 opened at the bottom wall of the air pipe 71, a lower insert 713 disposed inside the lower groove 712, a tension spring 714 disposed between the lower insert 713 and the upper insert 711, a threaded hole 715 opened on the outside of the air pipe 71, a retaining groove 716 disposed on the outside of the lower insert 713, and a locking bolt 717 disposed in the threaded hole 715.

[0041] Specifically, the upper groove 710 and the lower groove 712 are arranged in a ring array around the central axis of the trachea 71. The upper groove 710 and the lower groove 712 are arranged vertically and vertically. The upper insert 711 is inserted into the upper groove 710 and fixed with glue. The lower insert 713 is slidably inserted into the lower groove 712. The opening at the top of the lower groove 712 is provided with an outwardly expanding inclined surface, which can guide the lower insert 713 into the lower groove 712. The two ends of the tension spring 714 are welded to the upper insert 711 and the lower insert 713 respectively. The threaded hole 715 communicates with the lower groove 712. The slot 716 corresponds to the threaded hole 715. The locking bolt 717 is threadedly connected to the threaded hole 715 and extends into the slot 716.

[0042] By setting multiple sets of tension springs 714, during operation, the locking bolts 717 are selectively turned to enter the slots 716, locking the lower insert 713. The other locking bolts 717 are stored in the threaded holes 715, and the lower insert 713 is not locked. When the piston plate 74 moves, the unlocked lower insert 713 moves synchronously with the connecting pipe 73, while the locked lower insert 713 stays in the lower groove 712, causing the corresponding tension spring 714 to be stretched, generating resistance to the piston plate 74. In this way, using different numbers of tension springs 714 will produce different resistances, making the equipment more compatible with the user, and the overall equipment is simple to use and more convenient to operate.

[0043] The remaining structure is the same as that in Example 1.

[0044] Example 4, refer to Figures 1-2 , Figures 12-13 This is the fourth embodiment of the present invention. The difference between this embodiment and the first embodiment is that the inflatable component 6 specifically includes an air cushion 61 that is unevenly distributed along the inner contour of the flexible inner liner 2, a groove 62 opened on the side of the air cushion 61 near the flexible inner liner 2, an air hole 63 opened on the inner wall of the groove 62, a ventilation band 64 disposed on the inner wall of the groove 62, and an air nozzle 65 disposed on the end of the ventilation band 64 away from the air cushion 61.

[0045] Specifically, the surfaces of the flexible liner 2, air cushion 61, and ventilation band 64 are all equipped with Velcro. The flexible liner 2 has a hook side sewn on. The air cushion 61 has a rough side glued to one side of the flexible liner 2 and a hook side glued to the other side. The hook side is glued to the groove 62. The ventilation band 64 has a rough side glued to both sides. The air cushion 61 can be selected according to the user's muscle contour to select the corresponding adhesion points and number of adhesions. The air cushions 61 are arranged in sequence and glued to the flexible liner 2 using Velcro. The ventilation band 64 on the preceding air cushion 61 extends to the following air cushion 61 and overlaps into the groove 62. One side of the ventilation band 64 is attached to the inner wall of the groove 62 via Velcro, and the other side is attached to the flexible liner 2 via Velcro. At the same time, the corresponding air nozzle 65 is inserted into the air hole 63. The air nozzle 65 is made of iron. A magnet is provided in the air hole 63 to attract the air nozzle 65. A threaded sealing plug is installed in the first air hole 63 in the sequence. The ventilation band 64 on the last air cushion 61 in the sequence extends towards the insertion hole 11 and is flipped so that the corresponding air nozzle 65 is inserted into the insertion hole 11. The connecting tube 73 is threadedly connected to the air nozzle 65 in the insertion hole 11. A mesh cover 66 is provided on the side of the air cushion 61 away from the flexible liner 2.

[0046] With multiple air cushions 61, the corresponding adhesion points and number of adhesions can be selected according to the user's muscle contour, so that the device fits the thigh better and is more comfortable to wear. Furthermore, the ventilation band 64 connects the air cushions 61, which not only facilitates the installation of multiple air cushions 61, but also, when inflated, the ventilation band 64 is pressed between the air cushions 61 and the flexible inner liner 2, making the connection tighter and reducing the possibility of detachment and air leakage.

[0047] The remaining structure is the same as that in Example 1.

[0048] Example 5, refer to Figure 14 This is the fifth embodiment of the present invention. The difference between this embodiment and the first embodiment is that the anti-slip component includes a buckle 81 disposed on the outside of the upper outer bracket 1 and a strap 82 disposed on the inside of the buckle 81.

[0049] Specifically, the buckle 81 is divided into two parts: a female buckle and a male buckle. The female buckle is glued to the outer bracket 1, and the female buckle is tied to the shoulder strap 82. The other end of the shoulder strap 82 can be hung on the waist belt or carried on the shoulder, which can effectively prevent the outer bracket 1 from slipping.

[0050] The remaining structure is the same as that in Example 1.

[0051] Example 6, refer to Figure 15 This is the sixth embodiment of the present invention. The difference between this embodiment and the first embodiment is that the anti-slip component includes a support arm 83 disposed on the side of the lower outer bracket 1 and a pedal 84 disposed at the bottom of the support arm 83.

[0052] Specifically, the support arm 83 is located on the outside of the thigh. The upper end of the support arm 83 is fixed to the outer bracket 1 by bolts. The bottom end of the support arm 83 is inserted into the shoe. The pedal 84 is fixed to the support arm 83 by bolts. The pedal 84 is made of flexible rubber plate and is stepped on. In this way, the support arm 83 is used to support the outer bracket 1 to prevent the outer bracket 1 from slipping.

[0053] The remaining structure is the same as that in Example 1.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A stable support training frame for knee joint rehabilitation, comprising two outer supports (1), a flexible inner liner (2) disposed on the inner side of the outer supports (1), a hanging ring (3) disposed on the outer contour of the outer supports (1), a strap (4) disposed on the inner side of the hanging ring (3), and a connecting component (5) disposed between the two outer supports (1), characterized in that: It also includes an inflation assembly (6) disposed inside the flexible inner liner (2) and an adjustment assembly (7) disposed on the side of the outer support (1). The adjustment assembly (7) includes an air pipe (71) disposed on the side of the outer support (1), an air pump (72) disposed at the bottom of the air pipe (71), a connecting pipe (73) disposed on the outside of the air pipe (71), a piston plate (74) disposed inside the air pipe (71), a sliding column (75) disposed on the top of the piston plate (74), a splicing pipe (76) disposed on the top of the air pipe (71), an air exchange port (77) disposed on the outside of the splicing pipe (76), and a pressure assembly disposed inside the air pipe (71). The outer bracket (1) has an insertion hole (11) on its side. The connecting pipe (73) passes through the insertion hole (11) and communicates with the inflation assembly (6). The piston plate (74) is located above the connecting pipe (73). The splicing pipe (76) is connected to the air pipe (71). The sliding column (75) is slidably inserted into the splicing pipe (76).

2. The stable support training frame for knee joint rehabilitation therapy according to claim 1, characterized in that: The pressure assembly includes a nut (78) disposed on the top of the splice pipe (76) and a compression spring (79) disposed between the nut (78) and the sliding column (75).

3. The stable support training frame for knee joint rehabilitation therapy according to claim 1, characterized in that: The pressure assembly includes an upper groove (710) at the bottom of the piston plate (74), an upper insert (711) inside the upper groove (710), a lower groove (712) on the inner bottom wall of the air pipe (71), a lower insert (713) inside the lower groove (712), a tension spring (714) between the lower insert (713) and the upper insert (711), a threaded hole (715) on the outside of the air pipe (71), a retaining groove (716) on the outside of the lower insert (713), and a locking bolt (717) in the threaded hole (715). The upper groove (710) and the lower groove (712) are arranged in a ring array around the central axis of the trachea (71), and the locking bolt (717) extends into the slot (716).

4. The stable support training frame for knee joint rehabilitation therapy according to claim 1, characterized in that: The outer bracket (1) has two binding holes (12) on its side, and an elastic sleeve (721) is provided on the outside of the air pump (72). A binding rope (722) that passes through the binding hole (12) is provided on the outside of the elastic sleeve (721).

5. The stable support training frame for knee joint rehabilitation therapy according to claim 1, characterized in that: The connecting assembly (5) includes a connecting plate (51) disposed at the connection of the two outer supports (1), a limiting slide groove (52) opened at one end of the outer support (1) near the connecting plate (51), a limiting slide rod (53) disposed on the side of the connecting plate (51), and an anti-resistance box (54) disposed at the connection of the outer support (1) and the connecting plate (51). The limiting slide bar (53) is inserted into the limiting slide groove (52), and the two outer brackets (1) are provided with interlocking teeth at the connection point.

6. The stable support training frame for knee joint rehabilitation therapy according to claim 5, characterized in that: The inflation component (6) specifically includes an air cushion (61) unevenly distributed along the inner contour of the flexible inner liner (2), a groove (62) opened on the side of the air cushion (61) close to the flexible inner liner (2), an air hole (63) opened on the inner wall of the groove (62), a ventilation band (64) set on the inner wall of the groove (62), and an air nozzle (65) set on the end of the ventilation band (64) away from the air cushion (61). The surfaces of the flexible liner (2), air cushion (61), and ventilation strip (64) are all provided with Velcro. The air cushions (61) are arranged in sequence, with the ventilation strip (64) on the preceding air cushion (61) extending towards the following air cushion (61) and inserting the corresponding air nozzle (65) into the air hole (63). A sealing plug is installed in the first air hole (63) of the sequence. The ventilation strip (64) on the last air cushion (61) of the sequence extends towards the insertion hole (11) and inserts the corresponding air nozzle (65) into the insertion hole (11).

7. The stable support training frame for knee joint rehabilitation therapy according to claim 6, characterized in that: The air cushion (61) is provided with a mesh cover (66) on the side away from the flexible inner liner (2).

8. The stable support training frame for knee joint rehabilitation therapy according to claim 1, characterized in that: The outer support (1) is provided with anti-slip parts on its outer side.

9. The stable support training frame for knee joint rehabilitation therapy according to claim 8, characterized in that: The anti-slip component includes a buckle (81) disposed on the outside of the upper outer bracket (1) and a shoulder strap (82) disposed on the inside of the buckle (81).

10. The stable support training frame for knee joint rehabilitation therapy according to claim 8, characterized in that: The anti-slip component includes a support arm (83) disposed on the side of the lower outer bracket (1) and a pedal (84) disposed at the bottom of the support arm (83).

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