Lower limb rehabilitation training and walking aid integrated device

Abstract

The invention provides a lower limb rehabilitation training and walking aid integrated device, and relates to the technical field of rehabilitation training, the lower limb rehabilitation training and walking aid integrated device comprises a waist fixing device, a mounting rack is fixedly connected to the back of the waist fixing device, upper supporting legs are arranged at the two ends of the waist fixing device, hinging devices are arranged at the bottom ends of the upper supporting legs, and lower supporting legs are arranged at the other ends of the hinging devices; positioning bolts are arranged at the splicing positions of the hinging devices and the upper supporting legs and the splicing positions of the hinging devices and the lower supporting legs, through the collaborative design of a hinging device locking mechanism and a waist and leg linkage structure, the dynamic locking function is achieved, a patient is allowed to freely switch a walking mode and a standing mode according to requirements, and the scene adaptability of rehabilitation training is remarkably improved; the upper supporting leg can slightly adapt to the radian of the waist through the meshing design of a torsional spring reset mechanism and a semicircular gear, the protection pad is matched for buffering, the pressure of the waist is effectively dispersed, the risk of secondary damage is reduced, meanwhile, stepless height adjustment of the upper supporting leg and the lower supporting leg is achieved through combination of a positioning bolt and a multi-through-hole structure, and therefore the flexibility of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation training technology, and in particular to an integrated device for lower limb rehabilitation training and mobility assistance. Background Technology

[0002] Currently, most lower limb rehabilitation training and walking aids adopt rigid support structures or single-function designs, making it difficult to balance the flexibility of rehabilitation training with the stability of walking support. For example, traditional walking aids usually restrict joint movement through fixed brackets, resulting in stiff walking postures for patients and muscle atrophy with long-term use. While some rehabilitation devices have joint movement functions, they lack leg upright locking mechanisms, failing to meet the needs of patients for standing training or short rest. In addition, the height adjustment of existing devices mostly relies on manual disassembly or segmented splicing, which is cumbersome to operate and difficult to accurately adapt to users with different leg lengths, thus limiting rehabilitation efficiency and wearing comfort.

[0003] The core problem with existing technologies lies in the limitations of their structural design: First, the articulated joints lack dynamic locking functions, making it impossible to quickly switch between walking and standing modes, resulting in a limited range of rehabilitation training scenarios; second, the lumbar and leg linkage mechanisms mostly use rigid connections, which are difficult to adapt to the natural curvature of the human lumbar region, easily causing concentrated pressure on the lumbar region; third, height adjustment relies on external tools or complex operations, making it impossible for patients to independently complete the adaptation and adjustment. To address these issues, we propose an integrated device for lower limb rehabilitation training and mobility assistance. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an integrated device for lower limb rehabilitation training and walking assistance, including a waist fixation device. The back of the waist fixation device is fixedly connected to a mounting frame. Both ends of the waist fixation device are provided with upper support legs. The bottom end of each upper support leg is provided with a hinge. The other end of each hinge is provided with a lower support leg. The joint between the hinge and the upper and lower support legs is provided with a positioning bolt. Wherein: the hinge includes a connecting frame one and a connecting frame two. The side of the connecting frame two is provided with through holes three at equal intervals in a straight line. The bottom end of the connecting frame two is provided with a limiting groove. A locking block is slidably connected inside the limiting groove. A spring is fixedly connected to the top of the locking block. The top of the spring is fixedly connected to the top of the inner wall of the limiting groove.

[0005] Preferably, the side of the connecting frame one is provided with through holes two in a straight line at equal intervals, and a locking rod is fixedly connected to the top of one side of the connecting frame one. The side of the locking rod is rotatably connected to the bottom of the limiting groove. The side of the locking rod is provided with a groove, and the groove on the side of the locking rod is adapted to the bottom of the locking block.

[0006] Preferably, a protective pad is fixedly connected to the surface of the waist stabilizer, and connecting straps are fixedly connected to both ends of the waist stabilizer. The two connecting straps are fixedly connected by a connector. Fixing strips are fixedly connected to the sides of both ends of the waist stabilizer, and the bottom ends of the fixing strips are rotatably connected to the top of the upper support leg.

[0007] Preferably, the inner wall of the mounting bracket is rotatably connected to a rotating shaft, and a torsion spring is sleeved in the middle of the side of the rotating shaft. The torsion spring is located inside the mounting bracket and its two ends are fixedly connected to the mounting bracket and the rotating shaft, respectively. Limiting arms are fixedly connected to both ends of the rotating shaft.

[0008] Preferably, the other end of each limiting arm is rotatably connected to a pull rod one, the other end of each pull rod one is rotatably connected to a pull rod two, the other end of each pull rod two is rotatably connected to a mounting block via a pin, and one end of the pin on one end of each pull rod two passes through the mounting block and is also fixedly connected to a limiting gear.

[0009] Preferably, a semi-circular gear is fixedly connected to the top of each of the upper support legs. The semi-circular gear is rotatably connected to the mounting block through a connecting shaft. The semi-circular teeth on the side of the connecting shaft mesh with the side of the limiting gear. The surface of each upper support leg is provided with through holes one at equal intervals in a straight line. The upper support leg is fixedly connected to the connecting frame two through the splicing of through hole one, positioning bolt and through hole three. A restraint strap one is fixedly connected to the side of each upper support leg.

[0010] Preferably, a footrest is fixedly connected to the bottom end of the lower support leg, and a restraint strap is fixedly connected to the side of each lower support leg. Each lower support leg has through holes four spaced out in a straight line. The lower support leg is fixedly connected to the connecting frame one through the splicing of the through holes four, the positioning bolt and the through holes two.

[0011] The technical effects and advantages of this invention are as follows: 1. This invention achieves a dynamic locking function through the coordinated design of the hinge locking mechanism and the waist-leg linkage structure, allowing patients to freely switch between walking and standing modes according to their needs, significantly improving the adaptability of rehabilitation training scenarios. Furthermore, the torsion spring reset mechanism and the semi-circular gear meshing design allow the upper support leg to slightly adapt to the curvature of the waist. Combined with the protective pad cushioning, it effectively disperses the pressure on the waist and reduces the risk of secondary injury. At the same time, the combination of the positioning bolt and the multi-hole structure enables stepless height adjustment of the upper and lower support legs, allowing patients to independently complete the adaptation adjustment, shortening the operation time and greatly improving the ease of use.

[0012] 2. This invention shortens the patient's rehabilitation period and improves the efficiency of muscle strength recovery by simulating the joint movement design of natural gait. The modular structure supports rapid customization according to parameters such as the patient's leg length and joint range of motion, making it widely adaptable. At the same time, the lightweight materials and ergonomic design of the restraint strap can effectively extend the patient's daily wearing tolerance time. It is not only suitable for postoperative rehabilitation patients, but can also be extended to the daily walking assistance of the elderly, with broad social benefits and market prospects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the waist-stabilizing device structure of the present invention; Figure 3 This is a schematic diagram of the limiting arm linkage structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the connecting frame 2 and the upper support leg of the present invention; Figure 5 This is a schematic diagram of the hinge locking structure of the present invention; Figure 6 This is a schematic diagram of the connection structure between the connecting frame and the lower support leg of the present invention.

[0014] The attached diagram is labeled as follows: 1. Waist stabilizer; 101. Protective pad; 102. Connecting strap; 103. Connector; 104. Fixing strip; 2. Mounting bracket; 201. Rotating shaft; 202. Torsion spring; 203. Limiting arm; 204. Pull rod one; 205. Pull rod two; 2051. Limiting gear; 206. Mounting block; 3. Upper support leg; 301. Connecting shaft; 302. Semi-circular gear; 303. Through hole one; 304. Restraint strap one; 4. Hinge; 401. Connecting bracket one; 4011. Through hole two; 4012. Locking rod; 402. Connecting bracket two; 4021. Through hole three; 4022. Limiting groove; 403. Locking block; 404. Spring; 5. Lower support leg; 501. Footrest; 502. Restraint strap two; 503. Through hole four; 6. Positioning bolt. Detailed Implementation

[0015] This invention provides an integrated device for lower limb rehabilitation training and mobility assistance, such as... Figure 1 - Figure 6 As shown, it includes a waist stabilizer 1, a mounting bracket 2 fixedly connected to the back of the waist stabilizer 1, upper support legs 3 at both ends of the waist stabilizer 1, a hinge 4 at the bottom end of the upper support legs 3, a lower support leg 5 at the other end of the hinge 4, and a positioning bolt 6 at the joint between the hinge 4 and the upper support legs 3 and the lower support legs 5. The hinge 4 includes a first connecting frame 401 and a second connecting frame 402. The second connecting frame 402 has through holes 4021 equidistantly spaced in a straight line on its side. A limiting groove 4022 is formed at the bottom of the second connecting frame 402. A locking block 403 is slidably connected inside the limiting groove 4022. A spring 404 is fixedly connected to the top of the locking block 403, and the top of the spring 404 is fixedly connected to the top of the inner wall of the limiting groove 4022. The first connecting frame 401 has through holes 4011 equidistantly spaced in a straight line on its side. A locking rod 4012 is fixedly connected to the top of one side of the first connecting frame 401. The side of the locking rod 4012 is fixedly connected to the bottom of the limiting groove 4022. The device features a rotating connection at one end. A groove is provided on the side of the locking rod 4012, which matches the bottom end of the locking block 403. During use, when the thigh and calf bend, the device rotates around the locking rod 4012, allowing for flexibility and enabling the patient to walk naturally while wearing the device. Furthermore, the locking block 403 allows the patient to keep one leg upright by pressing it down, causing it to engage with the groove on the surface of the locking rod 4012, thus locking the hinge 4 and limiting the leg's upright position, thereby improving the device's effectiveness.

[0016] like Figure 1 and Figure 2 As shown, a protective pad 101 is fixedly connected to the surface of the waist stabilizer 1. A connecting strap 102 is fixedly connected to both ends of the waist stabilizer 1. The two connecting straps 102 are fixedly connected through a connector 103. A fixing strip 104 is fixedly connected to the sides of both ends of the waist stabilizer 1. The bottom end of the fixing strip 104 is rotatably connected to the top end of the upper support leg 3. When in use, the connecting strap 102 is wrapped around the waist and then connected to the connector 103 to bind the device to the waist area of ​​the human body, thus completing the basic wearing. The protective pad 101 on the back of the waist stabilizer 1 fits against the waist of the human body to provide cushioning.

[0017] like Figure 2 and Figure 3As shown, a rotating shaft 201 is rotatably connected to the inner wall of the mounting bracket 2. A torsion spring 202 is sleeved in the middle of the side of the rotating shaft 201. The torsion spring 202 is located inside the mounting bracket 2, and its two ends are fixedly connected to the mounting bracket 2 and the rotating shaft 201, respectively. Limiting arms 203 are fixedly connected to both ends of the rotating shaft 201. A pull rod 204 is rotatably connected to the other end of each limiting arm 203. A pull rod 205 is rotatably connected to the other end of each pull rod 204. A mounting block 206 is rotatably connected to the other end of the pull rod 205 via a pin. One end of the pin passes through the mounting block 206 and is fixedly connected to the limiting gear 2051. In use, the rotating shaft 201 will drive the limiting gear 2051 and the semi-circular gear 302 to mesh and rotate through the limiting arm 203, the first pull rod 204, the second pull rod 205, and the mounting block 206, so that the upper support leg 3 can rotate slightly relative to the waist stabilizer 1 to adapt to the natural curvature of the human waist. The torsion spring 202 provides the return spring force for the rotation, ensuring the stability of the device and reducing the force required for the patient to reset, thereby improving the effectiveness of the device.

[0018] like Figure 4 As shown, a semi-circular gear 302 is fixedly connected to the top of each upper support leg 3. The semi-circular gear 302 is rotatably connected to the mounting block 206 through the connecting shaft 301. The semi-circular teeth on the side of the connecting shaft 301 mesh with the side of the limiting gear 2051. The surface of each upper support leg 3 has through holes 303 at equal intervals in a straight line. The upper support leg 3 is fixedly connected to the connecting frame 402 through the splicing of the through holes 303, the positioning bolt 6 and the through hole 4021. A restraining strap 304 is fixedly connected to the side of each upper support leg 3. In use, by adjusting the connection between the positioning bolt 6 and different through holes 4021 and 303, the position between the connecting frame 402 and the upper support leg 3 can be adjusted, thereby adjusting the height of the device. This allows the device to extend and retract along its length to accommodate different users' leg lengths, thus improving the flexibility of the device.

[0019] like Figure 6 As shown, a footrest 501 is fixedly connected to the bottom end of the lower support leg 5, and a restraint strap 502 is fixedly connected to the side of the lower support leg 5. The surface of the lower support leg 5 is provided with through holes 503 at equal intervals in a straight line. The lower support leg 5 is fixedly connected to the connecting frame 401 through the splicing of the through holes 503, the positioning bolt 6 and the through hole 4011. In use, by adjusting the position of the positioning bolt 6 and the different through holes 4011 and 503, the position between the hinge 4 and the lower support leg 5 can be adjusted, thereby adjusting the height of the device. This allows the device to extend and retract along the length direction to accommodate the leg length of different users, thereby improving the flexibility of the device.

[0020] The working principle of this invention is as follows: When in use, firstly, the footrest 501 at the end of the lower support leg 5 is placed against the sole of the foot, and the second restraint strap 502 is used in conjunction with the first restraint strap 304 on the surface of the upper support leg 3 to fix the lower leg and thigh to the device respectively, so that the lower limbs of the human body and the device form a linkage support relationship. Then, after the connecting strap 102 is wrapped around the waist, it is connected to the connector 103 to bind the device to the waist area of ​​the human body, thus completing the basic wearing. The protective pad 101 on the back of the waist stabilizer 1 fits against the waist of the human body to provide cushioning. During use, when the angle between the user's waist and legs changes, the rotating shaft 201 drives the limiting gear 2051 and the semi-circular gear 302 to rotate through the limiting arm 203, pull rod one 204, pull rod two 205, and mounting block 206. This allows the upper support leg 3 to rotate slightly relative to the waist stabilizer 1, adapting to the natural curvature of the human waist. The torsion spring 202 provides a return force for the rotation, ensuring the stability of the device and reducing the force required for the patient to return to the starting position, thereby improving the device's stability. The device's effectiveness is enhanced when the thigh and calf bend together. It rotates around the locking rod 4012, allowing for greater flexibility and enabling the patient to walk naturally while wearing it. Furthermore, the locking block 403 allows the patient to keep one leg upright by pressing it down into a groove on the locking rod 4012, thus locking the hinge 4 and limiting the leg's upright position. This improves the device's overall effectiveness.

[0021] When the height of the device needs to be adjusted, the position between the connecting bracket 4022 and the upper support leg 3 can be adjusted by adjusting the connection between the positioning bolt 6 and different through holes 4021 and 303. Similarly, the position between the hinge 4 and the lower support leg 5 can be adjusted by adjusting the position between the positioning bolt 6 and different through holes 4011 and 503, thereby adjusting the height of the device. This allows the device to extend and retract along its length to accommodate different users' leg lengths, thus improving the device's flexibility.

[0022] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A device for rehabilitation training and walking aid of lower limbs, comprising a waist fixing device (1), characterized in that: The back of the waist fixing device (1) is fixedly connected with a mounting rack (2), both ends of the waist fixing device (1) are provided with upper supporting legs (3), the bottom ends of the upper supporting legs (3) are provided with hinged devices (4), the other ends of the hinged devices (4) are provided with lower supporting legs (5), and the splicing positions of the hinged devices (4) and the upper supporting legs (3) and the lower supporting legs (5) are provided with positioning pins (6). The hinged device (4) comprises a connecting frame one (401) and a connecting frame two (402), a plurality of through holes three (4021) are linearly and equidistantly formed in the side surface of the connecting frame two (402), a limiting groove (4022) is formed in the bottom end of the connecting frame two (402), a locking block (403) is slidably connected in the limiting groove (4022), a spring (404) is fixedly connected to the top end of the locking block (403), and the top end of the spring (404) is fixedly connected to the top end of the inner wall of the limiting groove (4022).

2. The device according to claim 1, characterized in that: A plurality of through holes two (4011) are linearly and equidistantly formed in the side surface of the connecting frame one (401), a locking rod (4012) is fixedly connected to the top end of one side of the connecting frame one (401), the side surface of the locking rod (4012) is rotatably connected to the bottom end of the limiting groove (4022), a groove is formed in the side surface of the locking rod (4012), and the groove in the side surface of the locking rod (4012) is matched with the bottom end of the locking block (403).

3. The device according to claim 1, characterized in that: The surface of the waist fixing device (1) is fixedly connected with a protective pad (101), both ends of the waist fixing device (1) are fixedly connected with connecting belts (102), the two connecting belts (102) are fixedly connected through a connecting head (103), the side surfaces of both ends of the waist fixing device (1) are fixedly connected with fixing strips (104), and the bottom ends of the fixing strips (104) are rotatably connected to the top ends of the upper supporting legs (3).

4. The device according to claim 1, characterized in that: A rotating shaft (201) is rotatably connected to the inner wall of the mounting rack (2), a torsional spring (202) is sleeved on the middle portion of the side surface of the rotating shaft (201), the torsional spring (202) is located in the mounting rack (2) and is fixedly connected to the mounting rack (2) and the rotating shaft (201) at both ends, and limiting arms (203) are fixedly connected to both ends of the rotating shaft (201).

5. The device according to claim 4, characterized in that: The other ends of the limiting arms (203) are rotatably connected with pull rods one (204), the other ends of the pull rods one (204) are rotatably connected with pull rods two (205), the other ends of the pull rods two (205) are rotatably connected with mounting blocks (206) through bolts, and the bolts at one end of the pull rods two (205) pass through the mounting blocks (206) and are further fixedly connected with limiting gears (2051).

6. The device according to claim 1, characterized in that: The top end of the upper support leg (3) is fixedly connected with a semicircular gear (302), the semicircular gear (302) is rotatably connected with the mounting block (206) through a connecting shaft (301), the semicircular teeth on the side surface of the connecting shaft (301) are meshingly connected with the side surface of the limiting gear (2051), the surface of the upper support leg (3) is linearly and equidistantly provided with a through hole one (303), the upper support leg (3) is fixedly connected with the connecting frame two (402) through the splicing and connection of the through hole one (303), the positioning bolt (6) and the through hole three (4021), and the side surface of the upper support leg (3) is fixedly connected with a binding belt one (304).

7. The device according to claim 1, characterized in that: The bottom end of the lower support leg (5) is fixedly connected with a foot support (501), the side surface of the lower support leg (5) is fixedly connected with a binding belt two (502), the surface of the lower support leg (5) is linearly and equidistantly provided with a through hole four (503), and the lower support leg (5) is fixedly connected with the connecting frame one (401) through the splicing and connection of the through hole four (503), the positioning bolt (6) and the through hole two (4011).

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