Lower limb rehabilitation training device

Abstract

This utility model belongs to the field of rehabilitation medical device technology, and in particular relates to a lower limb rehabilitation training device. The device includes a fixing plate, a seat cushion on top of the fixing plate, an adjustment mechanism on the top of the fixing plate, a fixing block on the right side of the seat cushion, and a binding component on the fixing block. A first connecting rod is hinged to the top left side of the fixing block, and a second connecting rod is hinged to the bottom left side of the fixing block. The other end of the second connecting rod is connected to a first groove, and a slide rail is provided at the bottom of the first groove. A connecting block is provided between the two first grooves, and the connecting block and the first groove are detachably connected. A driving mechanism is provided on the top of the fixing plate. This design allows for adjustment of the seat cushion height, making it easier for family members or nurses to assist patients in sitting on the cushion for lower limb training. A driving mechanism pushes the connecting block, and the connection state between the connecting block and the first groove allows for simultaneous movement of both legs or single-leg movement, thus reducing production costs.

Description

Technical Field

[0001] This utility model belongs to the field of rehabilitation medical device technology, and in particular relates to a lower limb rehabilitation training device. Background Technology

[0002] In neurology, many neurological diseases can affect the brain or spinal cord's control over the muscles of the lower limbs, leading to motor disorders, sensory abnormalities, or balance problems and lower limb dysfunction, such as stroke, Parkinson's disease, and multiple sclerosis. To restore or improve the patient's lower limb function and ability to live independently, lower limb rehabilitation training is usually required. Through lower limb training, the range of motion of joints can also be maintained, normal bone use can be promoted, and muscle atrophy can be reduced.

[0003] Currently, lower limb training includes joint range of motion training and assisted leg movement. Leg training currently involves having the patient sit in a chair, securing their legs, and then using a hydraulic cylinder or electric actuator to move the legs. However, because the chair height is not adjustable, it is difficult for the patient to move when assisted into the chair by family members or nurses. Furthermore, current methods use two actuators to simultaneously or separately move both legs, which increases costs and adds to the patient's financial burden. Utility Model Content

[0004] The purpose of this invention is to provide a lower limb rehabilitation training device that allows for height adjustment of the seat and reduces the number of drive mechanisms.

[0005] The lower limb rehabilitation training device includes a horizontally arranged fixed plate, a seat cushion above the fixed plate, an adjustment mechanism for adjusting the height of the seat cushion at the top of the fixed plate, two fixed blocks arranged in a front-to-back pattern on the right side of the seat cushion, and binding components for binding the legs on the fixed blocks.

[0006] The top left side of the fixed block is hinged with a first link that swings up and down. The other end of the first link is connected to the fixed plate. The bottom left side of the fixed block is hinged with a second link that swings up and down. The other end of the second link is connected to a first groove. The bottom of the first groove is provided with a slide rail that slides left and right with it. The slide rail is fixed to the fixed plate.

[0007] A connecting block is horizontally arranged between the two first grooves. The connecting block and the first groove are detachably connected. A drive mechanism for pushing the connecting block is provided on the top of the fixing plate.

[0008] Furthermore, the adjustment mechanism includes an adjustment rod vertically fixed to the top of the fixed plate, an adjustment tube sleeved on the adjustment rod, and the adjustment tube and the adjustment rod being threaded together;

[0009] The top end of the adjustment tube is connected to the bottom of the seat cushion via a connecting component. The connecting component is used to connect the adjustment tube to the seat cushion and allow the adjustment tube to rotate independently. The top of the fixed plate is provided with a limiting component that restricts the horizontal rotation of the seat cushion.

[0010] Furthermore, the adjusting rod is a screw, and the inner wall of the adjusting tube has an internal thread that is threaded to it.

[0011] Furthermore, the connecting assembly includes a bearing, and the bottom of the seat has a rotating groove for the top end of the adjusting tube to be inserted and rotated freely, with the bearing installed between the adjusting tube and the rotating groove.

[0012] Furthermore, the limiting component includes a guide rod vertically fixed to the top of the fixing plate, with a guide tube independently sleeved on the guide rod, and the top end of the guide tube fixed to the bottom of the seat cushion.

[0013] Furthermore, there are four guide rods and four guide tubes, located at the four corners of the bottom of the seat cushion, and bolts are provided on the guide tubes to fix them to the guide rods.

[0014] Furthermore, each of the fixed blocks is provided with a pedal at its bottom, and a movable block is fixed to the side of the pedal near the fixed block. The fixed block is provided with a sliding groove for the movable block to be inserted and slide along the length of the fixed block, and the fixed block is provided with bolts to fix the movable block in the sliding groove.

[0015] Furthermore, a second groove is provided between the slide rail and the first groove, which slides left and right with the slide rail. The first groove is fitted onto the top of the second groove. The side wall of the first groove is provided with a first sliding groove for inserting a connecting block and sliding it horizontally to the right. The connecting block passes through the first sliding groove and is fixed to the side wall of the second groove.

[0016] The first groove body has a first bolt on its side wall away from the connecting block. The first groove body has two threaded holes that are threaded to the first bolt. One threaded hole is aligned with the second groove body, and the other threaded hole is offset from the second groove body.

[0017] Furthermore, a limiting block is fixed to the inner sidewall at the bottom of the second groove, and a second sliding groove is provided on the sidewall of the slide rail for the limiting block to be inserted and slide left and right.

[0018] Furthermore, the bottom of the limiting block is equipped with a first roller that rolls left and right at the bottom of the second slide groove, and the end of the limiting block located in the second slide groove is equipped with a second roller that rolls left and right at the bottom of the second slide groove.

[0019] The bottom of the slide rail is fixed with a base. The base and the slide rail are in an inverted "T" shape. The bottom of the base is provided with a third slide groove for the side wall of the first groove to be inserted and slide left and right. The bottom of the first groove is equipped with a third roller that rolls left and right in the third slide groove.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention allows for adjustable seat height, making it easier for family members or nurses to assist patients in sitting on the seat for lower limb training. The connecting block moves the first groove, causing the fixed block to tilt and move the patient's legs. By controlling the connection state between the connecting block and the first groove, the function of moving both legs simultaneously or moving one leg can be achieved. The connecting block only requires one drive mechanism, thus reducing production costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 for Figure 1 Enlarged schematic diagram of the bottom structure of the central fixing block;

[0024] Figure 3 for Figure 1 A schematic diagram of the mating structure of the second groove, connecting block, first groove, slide rail and base;

[0025] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0026] Figure 5 for Figure 1 A front view structural diagram;

[0027] The components in the diagram are named as follows: 1. Fixed plate; 2. Adjusting rod; 3. Adjusting tube; 4. Guide rod; 5. Guide tube; 6. Seat cushion; 7. Fixed block; 8. Strap; 9. Movable block; 10. Pedal; 11. Slide rail; 11.1. Limiting groove; 12. Base; 13. Second groove; 14. Connecting block; 15. First groove; 16. First bolt; 17. First roller; 18. Second roller; 19. Third roller; 20. Limiting block. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0029] The lower limb rehabilitation training device described in this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 as shown, comprising a horizontally arranged fixing plate 1. A seat cushion 6 is disposed above the fixing plate 1, a backrest is disposed on the left side of the seat cushion 6, handguards are disposed on the front and rear sides of the seat cushion 6, two fixing blocks 7 arranged in a front-rear manner are disposed on the right side of the seat cushion 6, and straps 8 are disposed on both front and rear sides of the fixing block 7. The two front and rear straps 8 can be connected by a hook and loop fastener, so that the straps 8 fix the patient's leg to the fixing block 7. Certainly, the two front and rear straps 8 can also be knotted to bind the leg to the fixing block 7, and the straps 8 constitute a binding assembly for binding the leg to the fixing block 7. In order to increase the contact area between the fixing block 7 and the leg, as shown in Figure 2 , the right side of the fixing block 7 is provided with a placement groove of an arc structure, and the placement groove is of a "C" type structure, which can increase the contact area between the right side of the fixing block 7 and the leg, thereby enhancing the fixing effect on the leg.

[0030] The top of the left side of the fixing block 7 is hinged with a first connecting rod that swings up and down, and the other end of the first connecting rod is connected to the fixing plate 1. The bottom end of the left side of the fixing block 7 is hinged with a second connecting rod that swings up and down, the other end of the second connecting rod is connected with a first groove body 15, the first groove body 15 is a groove of a "concave" type structure with an opening facing downward, the bottom of the first groove body 15 is provided with a sliding rail 15 in sliding fit therewith in the left-right direction, and the sliding rail 11 is fixed to the fixing plate 1.

[0031] A connecting block 14 is horizontally disposed between the two first groove bodies 15, the connecting block 14 is detachably connected with the first groove bodies 15, and a hydraulic cylinder is mounted on the top of the fixing plate 1 to push the connecting block 14. Certainly, an electric push rod can also be used to push the connecting block 14, and the first groove body 15 slides horizontally on the sliding rail 11, while the second connecting rod is hinged to the top of the first groove body 15, so the piston rod of the hydraulic cylinder or the electric push rod does not directly bear the load, and the gravity of the fixing block 7 is converted into a force in the horizontal direction, thereby protecting the hydraulic cylinder or the electric push rod. The hydraulic cylinder or the electric push rod is a driving mechanism for pushing the connecting block 14.

[0032] The adjusting mechanism comprises an adjusting rod 2 vertically fixed on the top of the fixing plate 1, an adjusting tube 3 is sleeved on the adjusting rod 2, and the adjusting tube 3 is in threaded fit with the adjusting rod 2.

[0033] The adjusting rod 2 is a screw, and the inner wall of the adjusting tube 3 has an internal thread that engages with it. The combined length of the adjusting rod 2 and the adjusting tube 3 is adjusted through the threaded engagement, thereby adjusting the height of the seat cushion 6. In some embodiments, the adjusting rod 2 can also be a lead screw. A turntable is horizontally fixed to the bottom end of the adjusting rod 2. The diameter of the adjusting rod 2 is smaller than the diameter of the turntable. A circular groove for inserting the turntable is opened on the top of the fixing plate 1. A bearing is installed between the turntable and the circular groove. A ball nut that engages with the lead screw is provided on the adjusting rod 2. The ball nut is fixed to the bottom end of the adjusting tube 3, and the top end of the adjusting tube 3 is fixed to the bottom of the seat cushion 6. By rotating the adjusting rod 2, the ball nut drives the adjusting tube 3 to move up and down. In order to facilitate the rotation of the turntable, a handle can also be fixed to the top of the turntable.

[0034] The bottom of the seat cushion 6 has a rotating groove for the top end of the adjusting tube 3 to be inserted and rotate freely. The rotating groove is circular, and the outer diameter of the adjusting tube 3 is smaller than the diameter of the rotating groove. A bearing is installed between the adjusting tube 3 and the rotating groove. The inner ring of the bearing is fixedly fitted onto the top end of the adjusting tube 3, and the outer ring of the bearing is fixed to the rotating groove. The adjusting tube 3 and the seat cushion 6 are connected by the bearing, allowing the adjusting tube 3 to rotate freely. In some embodiments, a connecting tube can also be fitted onto the top of the adjusting tube 3, and the connecting tube is fixed to the bottom of the seat cushion 6. A bearing is installed between the connecting tube and the adjusting tube 3. This section as a whole constitutes a connecting assembly for connecting the adjusting tube 3 and the seat cushion 6 and allowing the adjusting tube 3 to rotate independently.

[0035] A guide rod 4 is vertically fixed to the top of the fixed plate 1. A guide tube 5 is independently fitted onto the guide rod 4. The top end of the guide tube 5 is fixed to the bottom of the seat cushion 6. The length of the guide rod 4 is the same as the length of the adjusting rod 2, and the length of the guide tube 5 is the same as the length of the adjusting tube 3. The guide rod 4 restricts the horizontal movement of the guide tube 5, thereby restricting the rotation of the seat cushion 6. This section together constitutes a limiting component for restricting the horizontal rotation of the seat cushion 6.

[0036] Four guide rods 4 and four guide tubes 5 are provided, located at the four corners of the bottom of the seat cushion 6. The adjusting rod 2 and the adjusting tube 3 are located in the middle of the seat cushion 6 and the fixing plate 1. The guide tube 5 is provided with bolts to fix it to the guide rod 4. When the height of the seat cushion 6 is adjusted by rotating the adjusting tube 3, the bolts on the guide tube 5 are loosened. After adjustment, the guide tube 5 and the guide rod 4 are fixed by the bolts on the guide tube 5, so that the guide rod 4 and the guide tube 5 can also support the seat cushion 6, reduce the load on the adjusting rod 2 and the adjusting tube 3, and protect the threads of the adjusting rod 2 and the adjusting tube 3.

[0037] The five adjacent sections above together constitute the adjustment mechanism for adjusting the height of the seat cushion 6. Of course, in some embodiments, the adjustment rod 2 and adjustment tube 3 can be omitted, and the height of the seat cushion 6 can be adjusted directly through the four guide rods 4, guide tubes 5 and bolts.

[0038] Of course, the first connecting rod at the top left end of the fixed block 7 can be hinged to the two guide tubes 5 on the right side, so that the movement of the seat cushion 6 and the guide tubes 5 can drive the first connecting rod and the fixed block 7 to move. Of course, the first connection at the top left side of the fixed block 7 can also be directly supported and fixed to the top of the fixed plate 1 to support the top of the fixed block 7.

[0039] Each of the fixed blocks 7 has a foot pedal 10 at its bottom. The foot pedal 10 is used by the patient to step on it, increasing the patient's comfort. A movable block 9 is fixed to the side of the foot pedal 10 near the fixed block 7. The thickness of the movable block 9 is less than the thickness of the thinnest part of the fixed block 7 after the placement groove is opened. The fixed block 7 has a sliding groove for the movable block 9 to be inserted and slide along the length direction of the fixed block 7. The fixed block 7 is provided with bolts to fix the movable block 9 in the sliding groove. By sliding the movable block 9 in the sliding groove, the distance between the foot pedal 10 and the fixed block 7 can be adjusted.

[0040] A second groove 13 is provided between the slide rail 11 and the first groove 15, which slides left and right with the slide rail 11. The second groove 13 and the first groove 15 have the same structure, also in the form of a downward-opening "U" shape. The first groove 15 is fitted onto the top of the second groove 13. The distance between the front and rear outer side walls of the second groove 13 is less than the distance between the front and rear inner side walls of the first groove 15. The side wall of the first groove 15 has a first sliding groove for the insertion of a connecting block 14 and its horizontal sliding to the right. The connecting block 14 passes through the first sliding groove and is fixed to the side wall of the second groove 13. The first sliding groove has no right side wall. There is a distance between the first sliding groove and the left end of the first groove 15. The front side wall of the rear first groove 15 has a first sliding groove. A first sliding groove is provided on the rear side wall of body 15; of course, in some embodiments, the side wall of the second groove body 13 can extend beyond the side wall of the first groove body 15, so that the connecting block 14 can be directly fixed to the second groove body 13, thus eliminating the need for the first sliding groove; a first bolt 16 is provided on the side wall of the first groove body 15 away from the connecting block 14, a first bolt 16 is provided on the rear side wall of the rear first groove body 15, a first bolt 16 is provided on the front side wall of the front first groove body 15, and two threaded holes are provided on the first groove body 15 that are threadedly engaged with the first bolt 16. One threaded hole is aligned with the second groove body 13, and the other threaded hole is offset from the second groove body 13. The two threaded holes are arranged left and right, with the threaded hole on the right aligned with the second groove body 13. Figure 5As shown, when the first bolt 16 is in the threaded hole on the left, the screw of the first bolt 16 abuts against the side wall of the slide rail 11, fixing the first groove 15 to the slide rail 11. When the first bolt 16 is in the threaded hole on the right, the screw of the first bolt 16 abuts against the side wall of the second groove 13, thereby fixing the first groove 15 and the second groove 13. This section as a whole makes the first groove 15 and the connecting block 14 detachably connected.

[0041] A limiting block 20 is fixed to the inner side wall at the bottom of the second groove 13. The side wall of the slide rail 11 is provided with a second slide groove for the limiting block 20 to be inserted and slide left and right. By allowing the limiting block 20 to slide in the second slide groove, the second groove 13 can be prevented from detaching from the top of the slide rail 11.

[0042] The bottom of the limiting block 20 is equipped with a first roller 17 that rolls left and right at the bottom of the second slide groove, and the end of the limiting block 20 located in the second slide groove is equipped with a second roller 18 that rolls left and right at the bottom of the second slide groove. The bottom of the slide rail 11 is fixed with a base 12, and the base 12 and the slide rail 11 are in an inverted "T" shape. The bottom of the base 12 is provided with a third slide groove for the side wall of the first groove 15 to be inserted and slide left and right. The bottom of the first groove 15 is equipped with a third roller 19 that rolls left and right in the third slide groove. The first roller 17, the second roller 18 and the third roller 19 are all directional rollers that roll left and right. Through the first roller 17, the second roller 18 and the third roller 19, the friction between the second groove 13 and the slide rail 11 can be reduced, so that the sliding of the first groove 15 and the second groove 13 is smoother.

[0043] The working principle and technical effects of this embodiment:

[0044] When using, such as Figure 1As shown, loosen the bolt on the guide tube 5, then rotate the adjusting tube 3 to lower the height of the seat cushion 6. A family member or nurse then assists the patient to sit on the seat cushion 6. The adjusting tube 3 is then rotated to adjust the seat cushion 6 to a suitable height based on the patient's height or leg length. The patient's legs are then placed on the right side of the fixing block 7 and secured with the straps 8. Depending on the patient's leg movement needs, if simultaneous leg movement training is required, the first groove 15 and the second groove 13 are fixed with the first bolt 16. The connecting block 14 is then pushed, causing it to slide and change the tilt angle of the fixing block 7, thus assisting the patient's leg movement. If only one leg needs movement, such as the posterior leg, the first bolt 16 on the front first groove 15 is loosened, and then the front first bolt 16 is screwed into the threaded hole on the left side of the front first groove 15. The groove 15 is fixed to the front slide rail 11. When the connecting block 14 is pushed to the right, the connecting block 14 will still drive the rear first groove 15 to slide, while the front connecting block 14 will slide out of the first slide groove on the rear side wall of the front first groove 15. The connecting block 14 only drives the front second groove 13 to slide. In this way, the movement of the connecting block 14 only drives the rear first groove 15 to slide, and only the rear leg is moved. The same applies to the front leg. The rear first groove 15 is fixed to the rear slide rail 11. The height of the seat cushion 6 can be adjusted to make it easier for the patient to sit on the seat cushion 6. Only one drive mechanism is needed to drive the connecting block 14 to move. By fixing the connecting block 14 and the first groove 15, the connecting block 14 can drive or not drive the first groove 15 to slide, so that both legs can move or one leg can move. A single drive mechanism can complete the movement of both legs and different single legs. One drive mechanism reduces production costs.

Claims

1. A lower limb rehabilitation training device, comprising a horizontally arranged fixing plate (1), characterized in that: A seat cushion (6) is provided above the fixing plate (1). An adjustment mechanism for adjusting the height of the seat cushion (6) is provided on the top of the fixing plate (1). Two fixing blocks (7) arranged in a front-to-back manner are provided on the right side of the seat cushion (6). A binding component for binding the legs is provided on the fixing block (7). The top left side of the fixed block (7) is hinged with a first link that swings up and down. The other end of the first link is connected to the fixed plate (1). The bottom left side of the fixed block (7) is hinged with a second link that swings up and down. The other end of the second link is connected to a first groove (15). The bottom of the first groove (15) is provided with a slide rail (11) that slides left and right with it. The slide rail (11) is fixed to the fixed plate (1). A connecting block (14) is horizontally arranged between the two first grooves (15). The connecting block (14) and the first grooves (15) are detachably connected. A drive mechanism for pushing the connecting block (14) is provided on the top of the fixing plate (1).

2. The lower limb rehabilitation training device according to claim 1, characterized in that: The adjustment mechanism includes an adjustment rod (2) vertically fixed to the top of the fixed plate (1), and an adjustment tube (3) is sleeved on the adjustment rod (2). The adjustment tube (3) and the adjustment rod (2) are threaded together. The top end of the adjusting tube (3) is connected to the bottom of the seat cushion (6) via a connecting component. The connecting component is used to connect the adjusting tube (3) to the seat cushion (6) and allow the adjusting tube (3) to rotate independently. The top of the fixing plate (1) is provided with a limiting component that restricts the horizontal rotation of the seat cushion (6).

3. The lower limb rehabilitation training device according to claim 2, characterized in that: The adjusting rod (2) is a screw, and the inner wall of the adjusting tube (3) is provided with an internal thread that is threaded to it.

4. The lower limb rehabilitation training device according to claim 3, characterized in that: The connecting assembly includes a bearing, and the bottom of the seat (6) has a rotating groove for the top end of the adjusting tube (3) to be inserted and rotated freely. The bearing is installed between the adjusting tube (3) and the rotating groove.

5. The lower limb rehabilitation training device according to claim 4, characterized in that: The limiting component includes a guide rod (4) vertically fixed to the top of the fixing plate (1), a guide tube (5) independently fitted on the guide rod (4), and the top end of the guide tube (5) fixed to the bottom of the seat cushion (6).

6. The lower limb rehabilitation training device according to claim 5, characterized in that: The guide rod (4) and guide tube (5) are each provided with 4 rods, which are located at the 4 corners of the bottom of the seat cushion (6). The guide tube (5) is provided with bolts to fix it to the guide rod (4).

7. The lower limb rehabilitation training device according to claim 6, characterized in that: Each of the fixed blocks (7) is provided with a pedal (10) at its bottom. A movable block (9) is fixed to the side of the pedal (10) near the fixed block (7). A sliding groove is provided on the fixed block (7) for the movable block (9) to be inserted and slide along the length of the fixed block (7). A bolt is provided on the fixed block (7) to fix the movable block (9) in the sliding groove.

8. The lower limb rehabilitation training device according to claim 7, characterized in that: A second groove (13) is provided between the slide rail (11) and the first groove (15) and slides left and right with the slide rail (11). The first groove (15) is fitted on the top of the second groove (13). The side wall of the first groove (15) is provided with a first sliding groove for the insertion of the connecting block (14) and sliding horizontally to the right. The connecting block (14) passes through the first sliding groove and is fixed to the side wall of the second groove (13). The first groove (15) has a first bolt (16) on its side wall away from the connecting block (14). The first groove (15) has two threaded holes that are threaded to the first bolt (16). One of the threaded holes is aligned with the second groove (13), and the other threaded hole is offset from the second groove (13).

9. The lower limb rehabilitation training device according to claim 8, characterized in that: A limiting block (20) is fixed to the inner side wall at the bottom of the second groove (13), and a second sliding groove is provided on the side wall of the slide rail (11) for the limiting block (20) to be inserted and slide left and right.

10. The lower limb rehabilitation training device according to claim 9, characterized in that: The bottom of the limiting block (20) is equipped with a first roller (17) that rolls left and right at the bottom of the second slide groove, and the end of the limiting block (20) located in the second slide groove is equipped with a second roller (18) that rolls left and right at the bottom of the second slide groove. The bottom of the slide rail (11) is fixed with a base (12). The base (12) and the slide rail (11) are in an inverted "T" shape. The bottom of the base (12) is provided with a third slide groove for the side wall of the first groove (15) to be inserted and slide left and right. The bottom of the first groove (15) is equipped with a third roller (19) that rolls left and right in the third slide groove.

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