A device for knee flexion training

Abstract

The utility model belongs to knee joint training device technical field, especially a device for knee joint flexion training, the mode of lower leg self -activity exercise is limited to the patient of better knee joint function recovery only, and for other patients, the problem of greater exercise intensity, present the following scheme, including the seat plate, the bottom fixed setting of seat plate has the support inclined plate and the support vertical rod, the other end fixed setting of support inclined plate has the first antiskid cross bar of ground contact, the side hinged of seat plate has the backrest, the inner wall of backrest is fixedly arranged with the back cushion, the utility model discloses when using, through the extension of electric push rod to drive the rotation of lower leg movable frame, can assist the patient to carry out knee joint flexion training, even for the patient of poor knee joint function recovery can provide effective exercise, and through controller can accurate adjustment electric push rod's extension speed and amplitude, thereby change knee joint flexion training's intensity, satisfy the rehabilitation demand of different patients.

Description

Technical Field

[0001] This utility model relates to the field of knee joint training device technology, and in particular to a device for knee joint flexion training. Background Technology

[0002] The knee flexion training device is a rehabilitation device specifically designed to improve and restore knee flexion function. It is suitable for post-operative knee rehabilitation, patients with arthritis, or people with limited knee mobility.

[0003] A search revealed a patent with publication number CN218923697U that discloses a flexion exercise device specifically for patients after knee replacement surgery. Although this device can exercise the knee flexion function by using the weight of the lower leg, the method of exercising the lower leg independently is only suitable for patients whose knee function has recovered well. For other patients, the exercise intensity is too high.

[0004] To address the aforementioned problems, this utility model document proposes a device for knee flexion training. Utility Model Content

[0005] This invention provides a device for knee flexion training, which solves the problem that existing methods of calf voluntary movement training are only suitable for patients with good knee joint function recovery, while the training intensity is too high for other patients.

[0006] This utility model provides the following technical solution:

[0007] A device for knee flexion training, comprising:

[0008] The seat has a supporting inclined plate and a supporting vertical rod fixedly installed at its bottom. A first anti-slip horizontal bar that contacts the ground is fixedly installed at the other end of the supporting inclined plate. A backrest is hinged to one side of the seat, and a backrest cushion is fixedly installed on the inner wall of the backrest. Two lower leg movable frames are symmetrically hinged at the bottom edge of the seat. The two lower leg movable frames are located on both sides of the supporting vertical rod. An ankle fixing strap equipped with buckles and Velcro is fixedly installed at the bottom end of the lower leg movable frames.

[0009] The first adjustment component, located on the support vertical rod, is used to adjust the inclination of the seat board;

[0010] The second adjustment component is located on the backrest and is used to adjust the tilt of the backrest.

[0011] The drive assembly, located on the seat, is used to adjust the knee flexion angle.

[0012] In one possible design, the first adjustment component includes a hollow rod disposed at the bottom of the support vertical rod, the bottom end of the support vertical rod being slidably mounted in the cavity at the top of the hollow rod, a first bolt for locking the extension length of the support vertical rod being threaded into a threaded hole on the hollow rod, and a second anti-slip crossbar being fixedly disposed at the bottom end of the hollow rod.

[0013] In one possible design, the second adjustment assembly includes a rod hinged to the outer wall of the backing plate, and the surface of the supporting inclined plate is equidistantly provided with limiting pieces for abutting the other end of the rod.

[0014] In one possible design, the drive assembly includes two mounting plates symmetrically fixed to the bottom of the seat, with an electric push rod hinged to one side of each mounting plate and the other end of the electric push rod hinged to the side wall of the corresponding lower leg movement frame.

[0015] In one possible design, armrests are fixedly installed on both sides of the seat, and the armrests are equipped with controllers for controlling the operation of corresponding electric actuators.

[0016] In one possible design, a movable plate is slidably installed in the cavity at the top of the backrest, a headrest is fixedly installed on the inner wall of the movable plate, and a second bolt for locking the extension length of the movable plate is threaded into the threaded hole on the backrest.

[0017] In one possible design, two thigh support straps are symmetrically fixed to the top of the seat. An arc-shaped silicone plate for conforming to the upper surface of the thigh is fixed to the inner wall of the thigh support strap. O-rings for cooperating with the thigh support straps are fixed to both sides of the seat. One end of the thigh support strap passes through the corresponding O-ring and is fixed by a set of Velcro on the outer wall.

[0018] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0019] The working principle and usage process of this technical solution are as follows:

[0020] Before use, the tilt of the seat and backrest can be adjusted according to the patient's needs. For the seat, this is achieved through the first adjustment component: loosen the first bolt, and the support rod can slide in the cavity at the top of the hollow rod. After adjusting the tilt of the seat, tighten the first bolt to lock the extension length of the support rod. For the backrest, this is achieved through the second adjustment component: place the insert rod on the limiting piece at a suitable position on the surface of the support plate to change the tilt angle of the backrest. If necessary, the extension length of the movable plate on the backrest can also be adjusted by loosening the second bolt, sliding the movable plate to make the headrest reach a suitable height, and then tightening the second bolt to lock it.

[0021] Next, the patient sits on the seat board with their back against the backrest cushion, places their thighs on the seat board, and uses two thigh fixation straps to pass through the corresponding O-rings and secure them with Velcro, so that the curved silicone plate fits against the upper surface of the thigh, thereby stabilizing the thigh. Then, both feet are placed into the ankle fixation straps at the bottom of the two lower leg frames, and the adjustment straps at the ends of the ankle fixation straps are passed through the buckles and the Velcro hook side is glued to the Velcro loop side to ensure the stability of the lower legs during training.

[0022] After the patient is seated on the device and ready, the drive assembly is activated via the controller on the arm rest. The electric push rod in the drive assembly begins to work. One end of the electric push rod is hinged to the mounting plate, and the other end is hinged to the side wall of the lower leg movement frame. When the electric push rod extends or retracts, it drives the lower leg movement frame to rotate around the hinge point with the bottom edge of the seat plate, thereby adjusting the flexion angle of the knee joint and realizing knee flexion training. The extension and retraction speed and amplitude of the electric push rod can be adjusted via the controller according to the patient's rehabilitation status and tolerance to change the intensity of the knee flexion training. After the training is completed, the electric push rod is stopped via the controller, the ankle and thigh fixation straps are loosened, and the patient gets up from the device and leaves.

[0023] This utility model has the following beneficial effects:

[0024] This invention is applicable to patients undergoing knee surgery rehabilitation, arthritis patients, or people with limited knee joint mobility. It uses the extension and retraction of an electric push rod to drive the rotation of the lower leg movement frame, which can assist patients in performing knee flexion training. It can provide effective exercise even for patients with poor knee joint function recovery.

[0025] This invention allows for precise adjustment of the extension and retraction speed and amplitude of the electric push rod via a controller, thereby changing the intensity of knee flexion training to meet the rehabilitation needs of different patients. It is also simple and convenient to operate, allowing patients to train independently.

[0026] The first and second adjustment components of this invention are used to adjust the tilt of the seat and backrest respectively to adapt to the sitting posture and backrest needs of different patients; the use of thigh fixation straps, curved silicone plates and ankle fixation straps ensures the stability and safety of patients during training. Attached Figure Description

[0027] Figure 1 A three-dimensional structural diagram of a device for knee flexion training provided in an embodiment of this utility model;

[0028] Figure 2 This is a schematic diagram of another perspective of a device for knee flexion training provided in an embodiment of the present invention.

[0029] Figure 3A schematic diagram of the first adjustment component of a device for knee flexion training provided in an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the drive assembly structure of a device for knee flexion training provided in an embodiment of this utility model;

[0031] Figure 5 This is a schematic diagram of the thigh fixation strap structure of a device for knee flexion training provided in an embodiment of the present invention.

[0032] Reference numerals: 1. Seat board; 2. Supporting inclined plate; 3. First anti-slip crossbar; 4. Supporting vertical bar; 5. Hollow bar; 6. Second anti-slip crossbar; 7. First bolt; 8. Backrest; 9. Cushion; 10. Insert rod; 11. Limiting plate; 12. Movable plate; 13. Headrest; 14. Second bolt; 15. Lower leg movement frame; 16. Ankle fixing strap; 17. Mounting plate; 18. Electric push rod; 19. Arm rest frame; 20. Controller; 21. Thigh fixing strap; 22. Curved silicone plate; 23. O-ring buckle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0036] Example 1

[0037] Please refer to Figure 1-4 A device for flexion training, comprising:

[0038] The seat 1 serves as the main support for the patient's sitting posture. A support ramp 2 and a support vertical rod 4 are fixedly installed at its bottom. A first anti-slip crossbar 3, in contact with the ground, is fixedly installed at the other end of the support ramp 2 to ensure the stability of the device during training. A first adjustment component is installed on the support vertical rod 4 to adjust the inclination of the seat 1 to accommodate different patient postures. The first adjustment component includes a hollow rod 5 located at the bottom of the support vertical rod 4. The bottom end of the support vertical rod 4 is slidably installed within the cavity at the top of the hollow rod 5. A first bolt 7, threaded into a threaded hole on the hollow rod 5, is used to lock the extension length of the support vertical rod 4. By adjusting the extension length of the support vertical rod 4 within the hollow rod 5, and then tightening the first bolt 7 so that its end passes through the threaded hole and abuts against the side wall of the support vertical rod 4 for fixation, the inclination of the seat 1 is changed. A second anti-slip crossbar 6 is fixedly installed at the bottom end of the hollow rod 5 to further improve the stability of the device.

[0039] Two calf movement frames 15 are symmetrically hinged at the bottom edge of the seat board 1. The two calf movement frames 15 are located on both sides of the support vertical bar 4. An ankle fixation strap 16 equipped with buckles and Velcro is fixed at the bottom of the calf movement frame 15 to fix the patient's ankle and ensure the stability of the calf during training.

[0040] A backrest 8 is hinged to one side of the seat 1. A cushion 9 is fixedly installed on the inner wall of the backrest 8 to provide comfortable back support for the patient. A second adjustment component is provided on the backrest 8 to adjust the tilt of the backrest 8 so that the patient can find the most comfortable backrest angle. The second adjustment component includes a rod 10 hinged to the outer wall of the backrest 8. Limiting pieces 11 for abutting the other end of the rod 10 are fixedly installed at equal intervals on the surface of the supporting inclined plate 2. By adjusting the position of the rod 10 on the supporting inclined plate 2, the tilt of the backrest 8 can be changed, and the bottom end of the rod 10 is used to abut against different limiting pieces 11 for fixation.

[0041] A movable plate 12 is slidably installed in the cavity at the top of the backrest 8. A headrest 13 is fixedly installed on the inner wall of the movable plate 12. A second bolt 14 for locking the extension length of the movable plate 12 is threaded into the threaded hole on the backrest 8. By adjusting the extension length of the movable plate 12 in the cavity of the backrest 8, and then tightening the second bolt 14 so that its end passes through the threaded hole and is tightly abutted against the side wall of the movable plate 12, the patient can easily adjust the position of the headrest 13.

[0042] The drive assembly is mounted on the seat 1 and is used to adjust the knee flexion angle. Specifically, two mounting plates 17 are symmetrically fixed at the bottom of the seat 1. An electric push rod 18 is hinged to one side of the mounting plate 17, and the other end of the electric push rod 18 is hinged to the side wall of the corresponding lower leg movement frame 15. Arm rest frames 19 are fixedly mounted on both sides of the seat 1. A controller 20 is provided on the arm rest frame 19 to control the operation of the corresponding electric push rod 18, so that the patient can control the extension and retraction of the electric push rod 18 by operating the controller 20 with their arm, thereby adjusting the knee flexion angle.

[0043] This application can be used for knee flexion training, or in other fields applicable to this application.

[0044] Example 2

[0045] Improvements based on Example 1:

[0046] A device for knee flexion training, which is used in the field of knee joint training devices;

[0047] Please refer to Figure 1-2 and Figure 5 Two thigh fixation straps 21 are symmetrically fixed to the top of the seat board 1. An arc-shaped silicone plate 22 for conforming to the upper surface of the thigh is fixed on the inner wall of the thigh fixation strap 21 to improve the comfort of the patient's thigh. O-ring buckles 23 that work with the thigh fixation straps 21 are fixed on both sides of the seat board 1. One end of the thigh fixation strap 21 passes through the corresponding O-ring buckle 23 and is fixed by a set of Velcro on the outer wall to ensure the stability of the thigh during training.

[0048] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric actuator 18 and the controller 20 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0049] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0050] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A device for knee flexion training, characterized in that, include: A seat (1) is provided with a support slope (2) and a support vertical rod (4) fixedly installed at the bottom of the seat (1). A first anti-slip horizontal rod (3) in contact with the ground is fixedly installed at the other end of the support slope (2). A backrest (8) is hinged to one side of the seat (1). A backrest (9) is fixedly installed on the inner wall of the backrest (8). Two lower leg movable frames (15) are symmetrically hinged at the bottom edge of the seat (1). The two lower leg movable frames (15) are located on both sides of the support vertical rod (4). An ankle fixing strap (16) equipped with buckles and Velcro is fixedly installed at the bottom end of the lower leg movable frame (15). The first adjustment component is located on the support vertical rod (4) and is used to adjust the inclination of the seat plate (1); The second adjustment component is located on the backrest (8) and is used to adjust the tilt of the backrest (8); A drive assembly, located on the seat (1), is used to adjust the knee flexion angle.

2. A device for knee flexion training according to claim 1, characterized in that The first adjustment component includes a hollow rod (5) disposed at the bottom of the support vertical rod (4). The bottom end of the support vertical rod (4) is slidably installed in the cavity at the top of the hollow rod (5). A first bolt (7) for locking the extension length of the support vertical rod (4) is threaded into the threaded hole on the hollow rod (5). A second anti-slip crossbar (6) is fixedly disposed at the bottom end of the hollow rod (5).

3. A device for knee flexion exercise as claimed in claim 1 wherein, The second adjustment assembly includes a rod (10) hinged to the outer wall of the backing plate (8), and a limiting piece (11) for abutting the other end of the rod (10) is fixedly provided at equal intervals on the surface of the supporting inclined plate (2).

4. The device for knee flexion training according to claim 1, wherein The drive assembly includes two mounting plates (17) symmetrically fixed at the bottom of the seat plate (1). An electric push rod (18) is hinged to one side of the mounting plate (17), and the other end of the electric push rod (18) is hinged to the side wall of the corresponding lower leg movable frame (15).

5. A device for knee flexion training according to claim 4, characterized in that Both sides of the seat (1) are fixedly provided with arm rests (19), and the arm rests (19) are provided with controllers (20) for controlling the operation of the corresponding electric push rods (18).

6. A device for knee flexion training as claimed in claim 1, wherein, A movable plate (12) is slidably installed in the cavity at the top of the backrest (8). A headrest (13) is fixedly installed on the inner wall of the movable plate (12). A second bolt (14) for locking the extension length of the movable plate (12) is threaded into the threaded hole on the backrest (8).

7. A device for knee flexion exercise as claimed in claim 1 wherein, Two thigh fixing straps (21) are symmetrically fixedly installed on the top of the seat (1). An arc-shaped silicone plate (22) for fitting the upper surface of the thigh is fixedly installed on the inner wall of the thigh fixing strap (21). O-ring buckles (23) that cooperate with the thigh fixing straps (21) are fixedly installed on both sides of the seat (1). One end of the thigh fixing strap (21) passes through the corresponding O-ring buckle (23) and is fixed by a set of Velcro on the outer wall.

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