Knee joint postoperative rehabilitation training device

Abstract

The utility model belongs to the technical field of knee joint postoperative rehabilitation training, particularly relates to a knee joint postoperative rehabilitation training device, and aims to solve the problems that the existing knee joint training effect depending on artificial assistance is unstable, and the traditional rehabilitation training device is complex in structure and cannot be flexibly adjusted according to the specific conditions of a patient. According to the technical scheme, the knee joint bending training device comprises a base, two supporting seats are symmetrically arranged at the top of the base, a shank supporting plate is driven by an electric air cylinder to swing back and forth, knee joint bending training is achieved, the training effect is stable, the training intensity can be adjusted according to the specific conditions of a patient, and matching of a threaded rod and a connecting pipe can be adjusted; the angle of the thigh supporting plate can be conveniently adjusted, so that the training requirements of different patients are met, the overall angle between the thigh supporting plate and the base and the overall angle between the shank supporting plate and the base can be adjusted at the same time through the worm and gear transmission mechanism, and the device can adapt to the patients with different heights and sitting postures.

Description

Technical Field

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

[0002] Knee surgery is a common treatment for knee joint diseases, applicable to knee problems caused by various factors such as wear and tear, injury, or inflammation. Its main purpose is to restore joint function, relieve pain, and improve the patient's quality of life. With the continuous advancement of medical technology, post-operative rehabilitation training for knee surgery has become increasingly important.

[0003] Traditional knee joint rehabilitation training methods mostly rely on manual assistance, which often results in unstable training effects. While some automated rehabilitation training devices on the market have emerged, they are often complex in structure and cannot be flexibly adjusted according to the patient's specific situation, leading to low patient comfort. Therefore, we propose a postoperative knee joint rehabilitation training device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the unstable effects of relying on artificial knee joint training and the complex structure and inability to flexibly adjust traditional rehabilitation training devices according to the specific conditions of patients, and to propose a postoperative knee joint rehabilitation training device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A postoperative rehabilitation training device for knee joint includes a base with two symmetrically arranged support seats on its top. A rotating shaft is rotatably connected to one side of the two support seats that are close to each other. Two support plates are fixedly connected through the outer wall of the rotating shaft between the two support seats. Two connecting rods are fixedly connected to one side of the two support plates that are close to each other, and these connecting rods are located above one side of the two support plates. A thigh support plate is rotatably connected to one connecting rod, and a calf support plate is rotatably connected to the other connecting rod. Two connecting plates are fixedly connected to one side of the two support plates that are close to each other, and these two connecting plates are respectively located below the thigh support plate and the calf support plate. The device also includes:

[0007] The drive assembly is located at the bottom of the calf support plate and is used to drive the calf support plate to swing back and forth, thereby achieving knee flexion.

[0008] The first adjustment component is located at the bottom of the thigh support plate and is used to adjust the angle of the thigh support plate.

[0009] The second adjustment component, located at the top of the base, is used to simultaneously adjust the overall angle between the thigh support and the calf support and the base.

[0010] In one possible design, the drive assembly includes an electric cylinder rotatably connected to a connecting plate located below the calf support plate. A first rotating seat is fixedly provided at the bottom of the calf support plate, and the output end of the electric cylinder is rotatably connected to the first rotating seat.

[0011] In one possible design, the first adjustment assembly includes a second rotating seat, which is fixedly disposed at the bottom of the thigh support plate. A rotating rod is rotatably connected inside the second rotating seat. One end of the rotating rod is rotatably connected to a connecting pipe. The inner wall of the connecting pipe is provided with internal threads. A threaded rod is threadedly connected to the connecting pipe through the internal threads. One end of the threaded rod is rotatably connected to a connecting plate located below the thigh support plate.

[0012] In one possible design, the second adjusting component includes a worm gear fixedly sleeved on the outer wall of the rotating shaft. A groove is formed on the top of the base below the worm gear. The same worm is rotatably connected to the inner walls of both sides of the groove. The worm meshes with the worm gear, and one end of the worm rotatably passes through the base and extends to the outer side of the base.

[0013] In one possible design, a foot support is slidably connected to the side of the calf support away from the connecting rod. Two limiting bolts are symmetrically threaded on both sides of the calf support, with one end of each limiting bolt abutting against the foot support. The foot support is provided with a strap for fixing the ankle. The strap includes a first fixing strap, which is fixedly installed on one side of the foot support. One end of the first fixing strap is fixedly provided with a limiting ring. A second fixing strap is fixedly installed on the other side of the foot support. The outer wall of the second fixing strap is respectively provided with a female hook and loop fastener and a male hook and loop fastener. The second fixing strap passes through the limiting ring and is folded in half, with the female hook and loop fastener and the male hook and loop fastener glued together.

[0014] In one possible design, both the thigh support and the calf support are topped with U-shaped sponge pads.

[0015] In one possible design, a rubber-woven protective net is fixedly connected to the side of the thigh support and calf support that are close to each other.

[0016] In this application, firstly, the patient places the leg to be trained on the device, with the thigh on the thigh support and the lower leg on the lower leg support. The second fixing strap in the strap of the foot support passes through the limiting ring of the first fixing strap, and the female and male sides of the Velcro on the first fixing strap are glued together to fix the patient's ankle on the foot support, so that the patient's lower leg can bend with the device. Then, the electric cylinder is activated. The electric cylinder is rotatably connected to the bottom of the lower leg support through the first rotating seat. Its output end pushes the first rotating seat and the lower leg support to swing back and forth around the axis of the connecting rod, thereby realizing the bending training of the knee joint.

[0017] To adjust the angle of the thigh support, the position of the threaded rod inside the connecting tube can be changed by rotating the connecting tube, thereby driving the rotating rod and the second rotating seat to rotate, ultimately achieving the adjustment of the thigh support angle. When adjusting the overall angle between the thigh support and the lower leg support and the base, the worm gear is rotated to drive the worm wheel and the rotating shaft to rotate. Since the rotating shaft is rotatably connected to the two support seats, it can drive the overall angle adjustment of the entire thigh support and the lower leg support and the base.

[0018] The footrest can slide on the calf support plate to accommodate patients with different calf lengths and is fixed by limiting bolts. The U-shaped sponge pad provides comfortable support, while the rubber woven protective net plays a safety role in preventing patients from accidentally colliding with the device during training.

[0019] Beneficial effects: In this utility model, the knee joint postoperative rehabilitation training device drives the lower leg support plate to swing back and forth through an electric cylinder to achieve knee joint flexion training. Not only is the training effect stable, but the training intensity can also be adjusted according to the patient's specific condition.

[0020] In this utility model, the postoperative rehabilitation training device for knee joint can easily adjust the angle of the thigh support plate through the cooperation of the threaded rod and the connecting tube, thereby meeting the training needs of different patients.

[0021] In this utility model, the postoperative rehabilitation training device for knee joint can simultaneously adjust the overall angle between the thigh support plate and the calf support plate and the base through a worm gear transmission mechanism, so that the device can adapt to patients of different heights and sitting postures.

[0022] In this invention, the lower leg support plate is driven to swing back and forth by an electric cylinder to achieve knee flexion training. Not only is the training effect stable, but the training intensity can also be adjusted according to the patient's specific situation. The cooperation of the threaded rod and the connecting tube can easily adjust the angle of the thigh support plate, thereby meeting the training needs of different patients. The worm gear transmission mechanism can simultaneously adjust the overall angle between the thigh support plate and the lower leg support plate and the base, so that the device can adapt to patients of different heights and sitting postures. Attached Figure Description

[0023] Figure 1 This is a top-view three-dimensional structural diagram of a knee joint postoperative rehabilitation training device proposed in this utility model.

[0024] Figure 2 This is a partial three-dimensional structural diagram of a knee joint postoperative rehabilitation training device proposed in this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of a knee joint postoperative rehabilitation training device proposed in this utility model.

[0026] Figure 4 This is a three-dimensional structural diagram of a knee joint postoperative rehabilitation training device proposed in this utility model from another perspective.

[0027] Figure 5 This is a partial three-dimensional structural diagram of the strap of a knee joint postoperative rehabilitation training device proposed in this utility model.

[0028] In the diagram: 1. Base; 2. Support seat; 3. Rotating shaft; 4. Support plate; 5. Connecting rod; 6. Thigh support plate; 7. Lower leg support plate; 8. U-shaped sponge pad; 9. Protective net; 10. Worm gear; 11. Worm; 12. Connecting plate; 13. Electric cylinder; 14. First rotating seat; 15. Support bracket; 16. Limit bolt; 17. Second rotating seat; 18. Rotating rod; 19. Connecting pipe; 20. Threaded rod; 21. Strap; 211. First fixing strap; 212. Second fixing strap; 213. Velcro female side; 214. Velcro male side. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example 1: Refer to Figure 1-4A rehabilitation training device includes a base 1, support seats 2, a rotating shaft 3, support plates 4, connecting rods 5, a thigh support plate 6, and a calf support plate 7. Two support seats 2 are symmetrically arranged on the top of the base 1. The rotating shaft 3 is rotatably connected to the side of the two support seats 2 closest to each other via bearings. Two support plates 4 are fixedly connected through the outer wall of the rotating shaft 3 between the two support seats 2. Two connecting rods 5 are fixedly connected to the side of the two support plates 4 closest to each other, and the two connecting rods 5 are located above one side of the support plates 4. The thigh support plate 6 is rotatably connected to one connecting rod 5 via a bearing, and the calf support plate 7 is rotatably connected to the other connecting rod 5 via a bearing. Thus, the thigh support plate 6 and the calf support plate 7 can rotate relative to the support plates 4 to adapt to different rehabilitation training needs.

[0031] Furthermore, the device also includes a drive assembly, a first adjustment assembly, and a second adjustment assembly. The drive assembly is located at the bottom of the calf support plate 7 and is used to drive the calf support plate 7 to swing back and forth, thereby achieving knee flexion. Specifically, the drive assembly includes an electric cylinder 13, which is rotatably connected to a connecting plate 12 located below the calf support plate 7 via bearings. A first rotating seat 14 is fixedly installed at the bottom of the calf support plate 7, and the output end of the electric cylinder 13 is also rotatably connected to the first rotating seat 14 via bearings. When the electric cylinder 13 extends or retracts, it can drive the calf support plate 7 to swing relative to the connecting rod 5, thereby achieving knee flexion and extension training.

[0032] The first adjustment assembly is located at the bottom of the thigh support plate 6 and is used to adjust the angle of the thigh support plate 6. Specifically, the first adjustment assembly includes a second rotating seat 17, which is fixedly located at the bottom of the thigh support plate 6. A rotating rod 18 is rotatably connected to the second rotating seat 17 via a bearing, and one end of the rotating rod 18 is rotatably connected to a connecting pipe 19 via a bearing. The inner wall of the connecting pipe 19 is provided with internal threads, and a threaded rod 20 is threadedly connected to the connecting pipe 19 via the internal threads. One end of the threaded rod 20 is rotatably connected to a connecting plate 12 located below the thigh support plate 6 via a bearing. By rotating the connecting pipe 19, the extension length of the threaded rod 20 within the connecting pipe 19 can be adjusted, thereby changing the angle of the thigh support plate 6.

[0033] The second adjustment assembly is located on the top of the base 1 and is used to simultaneously adjust the overall angle between the thigh support plate 6 and the calf support plate 7 and the base 1. Specifically, the second adjustment assembly includes a worm gear 10 and a worm 11. The worm gear 10 is fixedly sleeved on the outer wall of the rotating shaft 3. A groove is formed on the top of the base 1 below the worm gear 10, and the same worm 11 is rotatably connected to the inner walls of both sides of the groove through bearings. The worm 11 meshes with the worm gear 10, and one end of the worm 11 passes through the base 1 and extends to the outer side of the base 1 through a bearing. By rotating the worm 11, the worm gear 10 can be driven to rotate, thereby driving the rotating shaft 3, support plate 4, connecting rod 5, and the thigh support plate 6 and calf support plate 7 to adjust their overall angle.

[0034] This application can be used in the field of knee joint postoperative rehabilitation training technology, or in other fields applicable to this application.

[0035] Example 2: Reference Figure 1-3 Based on the first embodiment, an improvement is made to a postoperative rehabilitation training device for knee joints, which is applied to the field of postoperative rehabilitation training technology for knee joints. In addition, a foot support 15 is slidably connected to the side of the calf support plate 7 away from the connecting rod 5, and two limiting bolts 16 are symmetrically threaded on both sides of the calf support plate 7. One end of each of the two limiting bolts 16 abuts against the foot support 15 to fix the position of the foot support 15. The foot support 15 is provided with a strap 21 for fixing the ankle. The strap 21 includes a first fixing strap 211, which is fixedly installed on one side of the foot support 15. One end of the first fixing strap 211 is fixedly provided with a limiting ring. The other side of the foot support 15 is fixedly provided with a second fixing strap 212. The outer wall of the second fixing strap 212 is provided with a Velcro female surface 213 and a Velcro male surface 214. When the patient's foot is placed on the foot support 15, the second fixing strap 212 is folded through the limiting ring to make the Velcro female surface 213 and the Velcro male surface 214 stick together, thereby fixing the patient's foot and allowing the patient's lower leg to bend with the device to improve the training effect.

[0036] To increase patient comfort, both the thigh support plate 6 and the calf support plate 7 are equipped with U-shaped sponge pads 8 at their top. The U-shaped sponge pads 8 have good elasticity and breathability, which can effectively relieve patient discomfort during training.

[0037] In addition, a rubber-woven protective net 9 is fixedly connected to the side of the thigh support 6 and the calf support 7 that are close to each other. The protective net 9 can prevent patients from being injured due to excessive movements during training, thus improving the safety of training.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A postoperative rehabilitation training device for knee joint, comprising a base (1), wherein two support seats (2) are symmetrically arranged on the top of the base (1), a rotating shaft (3) is rotatably connected to one side of the two support seats (2) that are close to each other, and two support plates (4) are fixedly connected through the outer wall of the rotating shaft (3) between the two support seats (2), and two connecting rods (5) are fixedly connected to one side of the two support plates (4) that are close to each other, and the two connecting rods (5) are located above one side of the two support plates (4), a thigh support plate (6) is rotatably connected to one connecting rod (5), a calf support plate (7) is rotatably connected to the other connecting rod (5), and two connecting plates (12) are fixedly connected to one side of the two support plates (4) that are close to each other, and the two connecting plates (12) are respectively located below the thigh support plate (6) and the calf support plate (7), characterized in that, The device also includes: The drive assembly is located at the bottom of the calf support plate (7) and is used to drive the calf support plate (7) to swing back and forth to achieve knee flexion. The first adjustment component is located at the bottom of the thigh support plate (6) and is used to adjust the angle of the thigh support plate (6); The second adjustment component is located on the top of the base (1) and is used to simultaneously adjust the overall angle between the thigh support plate (6) and the calf support plate (7) and the base (1).

2. The knee joint postoperative rehabilitation training device according to claim 1, characterized in that, The drive assembly includes an electric cylinder (13), which is rotatably connected to a connecting plate (12) located below the calf support plate (7). A first rotating seat (14) is fixedly provided at the bottom of the calf support plate (7), and the output end of the electric cylinder (13) is rotatably connected to the first rotating seat (14).

3. The knee joint postoperative rehabilitation training device according to claim 1, characterized in that, The first adjustment component includes a second rotating seat (17), which is fixedly disposed at the bottom of the thigh support plate (6). A rotating rod (18) is rotatably connected inside the second rotating seat (17). One end of the rotating rod (18) is rotatably connected to a connecting pipe (19). The inner wall of the connecting pipe (19) is provided with an internal thread. The connecting pipe (19) is threadedly connected to a threaded rod (20) through the internal thread. One end of the threaded rod (20) is rotatably connected to a connecting plate (12) located below the thigh support plate (6).

4. The knee joint postoperative rehabilitation training device according to claim 1, characterized in that, The second adjustment component includes a worm gear (10), which is fixedly sleeved on the outer wall of the rotating shaft (3). The top of the base (1) is provided with a groove below the worm gear (10). The inner walls on both sides of the groove are rotatably connected to the same worm (11). The worm (11) meshes with the worm gear (10). One end of the worm (11) rotatably passes through the base (1) and extends to the outside of the base (1).

5. The knee joint postoperative rehabilitation training device according to claim 1, characterized in that, The lower leg support plate (7) is slidably connected to the foot support frame (15) on the side away from the connecting rod (5). Two limiting bolts (16) are symmetrically threaded on both sides of the lower leg support plate (7). One end of each limiting bolt (16) abuts against the foot support frame (15). The foot support frame (15) is provided with a strap (21) for fixing the ankle. The strap (21) includes a first fixing strap (211). The first fixing strap (211) is fixedly installed on one side of the foot support frame (15). One end of the first fixing strap (211) is fixedly provided with a limiting ring. The other side of the foot support frame (15) is fixedly provided with a second fixing strap (212). The outer wall of the second fixing strap (212) is respectively provided with a hook and loop female surface (213) and a hook and loop male surface (214). The second fixing strap (212) passes through the limiting ring and is folded in half. The hook and loop female surface (213) and the hook and loop male surface (214) are bonded together.

6. The knee joint postoperative rehabilitation training device according to claim 1, characterized in that, The top of both the thigh support plate (6) and the calf support plate (7) is provided with a U-shaped sponge pad (8).

7. The knee joint postoperative rehabilitation training device according to claim 1, characterized in that, The thigh support plate (6) and the calf support plate (7) are fixedly connected to a rubber-woven protective net (9) on the side that is close to each other.

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