Knee joint movement device

Abstract

The utility model relates to a knee joint movement device which comprises a body of a plate-shaped structure. Wherein a connecting piece is fixedly arranged at the front end of the main body, and a first pulley is rotationally arranged on the connecting piece through a first rotating shaft; a plurality of second pulleys are rotationally arranged on the two sides of the main body through a plurality of second rotating shafts respectively; the adjacent second pulleys on the same side of the main body are rotationally connected through a rotating piece and one end of a pull rope, and the other end of the pull rope is fixedly provided with a pull ring; one side of the two sides of the main body is fixedly provided with a mother buckle, the other side of the two sides of the main body is fixedly connected with one end of an elastic rope, and the other end of the elastic rope is fixedly provided with a son buckle matched with the mother buckle. The knee joint flexion and extension strength training device is simple in structure, capable of being disassembled and assembled, excellent in portability, small in occupied space when carried and capable of being stored in a backpack and a luggage case, and the knee joint flexion and extension strength training device can be used for assisting a rehabilitation patient in knee joint flexion and extension strength training and promoting strength recovery of a wounded person.

Description

Technical Field

[0001] The utility model relates to rehabilitation equipment, in particular to a knee joint exercise device. Background Art

[0002] As the social problem of aging becomes increasingly prominent, the public health significance of hip fractures in the elderly is becoming increasingly important. Due to the combined effects of osteoporosis, weakened muscle strength and other chronic diseases, once an elderly person suffers a hip fracture, the treatment and rehabilitation process is complex and challenging. Although surgical treatment is the mainstream choice, postoperative recovery is slow, and long-term bed rest not only increases the risk of complications such as bedsores, pneumonia, and deep vein thrombosis, but may also lead to a significant decline in physical function, seriously affecting the patient's quality of life and self-care ability.

[0003] Although existing rehabilitation equipment such as seated knee joint training devices and continuous passive motion (CPM) machines can help with rehabilitation to a certain extent, they also have certain limitations. For example, CPM machines are usually large in size and are not convenient for the elderly to operate and use independently at home; and seated knee joint training devices may not directly address the rehabilitation needs of hip fractures and have limited effects on the recovery of hip joint function.

[0004] In order to solve these problems, the medical technology field needs to develop rehabilitation equipment that is more convenient, lightweight, and easy for the elderly to operate and adapt to, and combine it with individualized rehabilitation plans and therapies to improve the quality of life and functional recovery after hip fracture. Utility Model Content

[0005] The purpose of the utility model is to provide a knee joint exercise device in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A knee joint exercise device is provided, comprising: a main body in a plate-like structure; wherein:

[0008] A connecting member is fixedly provided at the front end of the main body, and a first pulley is rotatably provided on the connecting member via a first rotating shaft;

[0009] A plurality of second pulleys are rotatably provided on both sides of the main body through a plurality of second rotating shafts; adjacent second pulleys on the same side of the main body are rotatably connected to one end of a pull rope through a rotating member, and a pull ring is fixedly provided on the other end of the pull rope; a female buckle is fixedly provided on one side of the two sides of the main body, and the other side of the two sides of the main body is fixedly connected to one end of an elastic rope, and a sub-buckle matching the female buckle is fixedly provided on the other end of the elastic rope.

[0010] Preferably, a soft cushion is fixedly provided on the top surface of the main body.

[0011] Preferably, an anti-slip strip is fixedly arranged on the inner wall of the pull ring; wherein,

[0012] The anti-slip strip is formed by arranging a plurality of saw teeth with semicircular cross sections.

[0013] Preferably, a protractor is also provided; wherein,

[0014] A sliding piece is slidably arranged on the pull rope, and the protractor is fixedly arranged on the sliding piece.

[0015] Preferably, the protractor comprises: a first disc-shaped structure; and a second semi-circular disc structure rotatably sleeved outside the first disc-shaped structure via a rotating shaft.

[0016] Preferably, the protractor further comprises: a limiting structure rotatably disposed on the first disc-shaped structure via the rotating shaft; wherein,

[0017] A plurality of angle scales are evenly arranged at equal angles along the circumferential direction of the first disc-shaped structure on a surface of the first disc-shaped structure away from the knee portion, and a plurality of the angle scales are concave structures;

[0018] The limiting structure is provided with a locking piece, which can be operably locked or disengaged from one of the several angle scales; at least a part of the limiting structure and the second semi-circular disc structure are in the same plane to limit the rotation angle of the second semi-circular disc structure.

[0019] Preferably, a first fixing plate is fixedly provided on a side portion of the first disc-shaped structure, and the first fixing plate is detachably connected to the lower leg.

[0020] Preferably, a plurality of first straps are fixedly provided on the first fixing plate, and the first fixing plate is detachably connected to the calf via the plurality of first straps.

[0021] Preferably, a second fixing plate is fixedly provided on the side of the second semi-circular disc structure, and the second fixing plate is detachably connected to the thigh.

[0022] Preferably, a plurality of second straps are fixedly provided on the second fixing plate, and the second fixing plate is detachably connected to the thigh via the plurality of second straps.

[0023] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0024] In the present invention, patients can flexibly adjust the connection adaptability between the device and the limbs according to their body size and personalized needs. Then, by operating the pull ring, various activities of the knee joint, such as flexion and extension, are simulated and reproduced. The linkage structure of the first pulley and the second pulley adopted in the main body is intended to effectively enhance the power transmission efficiency and stability performance of the knee joint under dynamic conditions.

[0025] In actual use, the movement of the knee joint will drive the second semi-disc structure to rotate accordingly, reflecting the actual bending angle of the knee joint in real time. In addition, the utility model also adopts a limit structure and a locking member, allowing the user to accurately set and lock the rotation angle of the second semi-disc structure, thereby achieving a more accurate and goal-oriented training process. This is particularly suitable for assisting patients who need to perform knee flexion and extension strength recovery training during bed rest, especially after fracture surgery.

[0026] The device has a simple structure and a small size, occupies limited space when carried, and is easy to store in a backpack or a suitcase, fully meeting the needs of convenient carrying and use in various occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the axial structure of the main body of the utility model;

[0028] Figure 2 This is a schematic diagram of the axial side structure of the protractor in the utility model;

[0029] The reference numerals include:

[0030] Main body 1; protractor 2; second rotating shaft 4; soft cushion 5; elastic rope 6; first rotating shaft 7; rotating member 8; female buckle 9; first pulley 10; second pulley 11; pull rope 12; pull ring 13; sub-buckle 14; sliding member 15; anti-slip strip 16; limiting structure 20; second semi-circular disk structure 22; first disk structure 23; first fixing plate 24; second fixing plate 25; rotating shaft 26; first strap 27; second strap 28. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0034] Example

[0035] This embodiment provides a knee joint exercise device, including: Figure 1 The main body 1 of the plate-like structure shown in FIG. Figure 2 The protractor 2 shown; wherein,

[0036] The cross section of the main body 1 is a rounded rectangular shape;

[0037] A cushion 5 is fixedly provided on the top surface of the main body 1;

[0038] A connecting member is fixedly provided at the front end of the main body 1, and a first pulley 10 is rotatably provided on the connecting member via a first rotating shaft 7;

[0039] Two second pulleys 11 are rotatably provided on both sides of the main body 1 through a plurality of second rotating shafts 4; the adjacent second pulleys 11 on the same side of the main body 1 are rotatably connected to one end of a pull rope 12 through a rotating member 8, the pull rope 12 is rotatably connected to the rotating member 8, and a pull ring 13 is fixedly provided on the other end of the pull rope 12; a female buckle 9 is fixedly provided on one side of the two sides of the main body 1, and the other side of the two sides of the main body 1 is fixedly connected to one end of an elastic rope 6, and a sub-buckle 14 matching the female buckle 9 is fixedly provided on the other end of the elastic rope 6;

[0040] Among them, an anti-slip strip 16 composed of a plurality of semicircular sawtooth sections is fixedly arranged on the inner wall of the pull ring 13;

[0041] Wherein, a sliding member 15 is slidably disposed on the pull rope 12, and the protractor 2 is fixedly disposed on the sliding member 15;

[0042] The protractor 2 comprises: a first disc-shaped structure 23, a second semi-circular disc structure 22 rotatably sleeved outside the first disc-shaped structure 23 via a rotating shaft 26, and a limiting structure 20 rotatably disposed on the first disc-shaped structure 23 via the rotating shaft 26;

[0043] Among them, a plurality of angle scales are evenly arranged at equal angles along the circumferential direction of the first disc-shaped structure 23 on a side away from the knee, and a plurality of the angle scales are concave structures;

[0044] The limiting structure 20 is provided with a locking piece, and the locking piece is operably locked or disengaged from one of the angle scales; at least a portion of the limiting structure 20 and the second semi-circular disc structure 22 are in the same plane to limit the rotation angle of the second semi-circular disc structure 22;

[0045] A first fixing plate 24 is fixedly disposed on the side of the first disc-shaped structure 23, two first straps 27 are fixedly disposed on the first fixing plate 24, and the first fixing plate 24 is detachably connected to the lower leg through the two first straps 27;

[0046] A second fixing plate 25 is fixedly provided on the side of the second semi-disc structure 22 , two second straps 28 are fixedly provided on the second fixing plate 25 , and the second fixing plate 25 is detachably connected to the thigh via the two second straps 28 .

[0047] As a preferred implementation, the locking element is a latch.

[0048] When in use, the patient first places the foot on the cushion 5 on the top of the main body 1, and fixes the foot through the elastic cord 6. One end of the elastic cord is provided with a sub-buckle 14, which is inserted into the female buckle 9 on the side of the main body 1 to achieve the stability of the foot.

[0049] The first strap 27 on the first fixing plate 24 is detachably connected to one side of the calf, and the second strap 28 on the second fixing plate 25 is connected to one side of the thigh. The rotation angle of the second semi-disc structure 22 can be set and limited through the limiting structure 20 and the locking piece on the rotating shaft. In this way, the bending angle of the knee joint can be adjusted according to the patient's specific rehabilitation needs to ensure that the exercise movements are performed within a safe and appropriate range.

[0050] After holding the anti-slip strip 16, the patient pulls the pull ring 13 to drive the first pulley 10 and the second pulley 11 to slide back and forth, thereby achieving bending and straightening of the knee joint. This process helps to improve the flexibility and strength of the knee joint, and has a positive effect on knee joint rehabilitation after hip fracture surgery.

[0051] In summary, in the present invention, patients can flexibly adjust the connection adaptability between the device and the limbs according to their personal body size and personalized needs. Then, by operating the pull ring, various activities of the knee joint, such as flexion, extension and other movements, are simulated and reproduced. The linkage structure of the first pulley and the second pulley adopted by the main body is intended to effectively enhance the power transmission efficiency and stability performance of the knee joint under dynamic conditions.

[0052] In actual use, the movement of the knee joint will drive the second semi-disc structure to rotate accordingly, reflecting the actual bending angle of the knee joint in real time. In addition, the utility model also adopts a limit structure and a locking member, allowing the user to accurately set and lock the rotation angle of the second semi-disc structure, thereby achieving a more accurate and goal-oriented training process. This is particularly suitable for assisting patients who need to perform knee flexion and extension strength recovery training during bed rest, especially after fracture surgery.

[0053] The device has a simple structure and a small size, occupies limited space when carried, and is easy to store in a backpack or a suitcase, fully meeting the needs of convenient carrying and use in various occasions.

[0054] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A knee joint exercise device, characterized in that: include: A main body (1) having a plate-like structure; wherein, A connecting member is fixedly provided at the front end of the main body (1), and a first pulley (10) is rotatably provided on the connecting member via a first rotating shaft (7); A plurality of second pulleys (11) are rotatably provided on both sides of the main body (1) via a plurality of second rotating shafts (4); the adjacent second pulleys (11) on the same side of the main body (1) are rotatably connected to one end of a pull rope (12) via a rotating member (8), and a pull ring (13) is fixedly provided on the other end of the pull rope (12); a female buckle (9) is fixedly provided on one of the two sides of the main body (1), and the other side of the two sides of the main body (1) is fixedly connected to one end of an elastic rope (6), and a sub-buckle (14) matching the female buckle (9) is fixedly provided on the other end of the elastic rope (6).

2. The knee joint exercise device according to claim 1, characterized in that: A soft cushion (5) is fixedly arranged on the top surface of the main body (1).

3. The knee joint exercise device according to claim 1, characterized in that: An anti-slip strip (16) is fixedly arranged on the inner wall of the pull ring (13); wherein, The anti-slip strip (16) is composed of a plurality of saw teeth with semicircular cross sections.

4. The knee joint exercise device according to claim 1, characterized in that: Also includes: Protractor (2); wherein, A sliding member (15) is slidably arranged on the pull rope (12), and the protractor (2) is fixedly arranged on the sliding member (15).

5. The knee joint exercise device according to claim 4, characterized in that: The protractor (2) comprises: a first disc-shaped structure (23), and a second semi-circular disc structure (22) rotatably sleeved outside the first disc-shaped structure (23) via a rotating shaft (26).

6. The knee joint exercise device according to claim 5, characterized in that: The protractor (2) further comprises: a limiting structure (20) rotatably arranged on the first disc-shaped structure (23) via the rotating shaft (26); wherein: A plurality of angle scales are evenly arranged at equal angles along the circumferential direction of the first disc-shaped structure (23) on a surface of the first disc-shaped structure (23) away from the knee, and a plurality of the angle scales are concave structures; The limiting structure (20) is provided with a locking piece, and the locking piece is operably locked or disengaged from one of the plurality of angle scales; at least a portion of the limiting structure (20) and the second semi-circular disc structure (22) are located in the same plane to limit the rotation angle of the second semi-circular disc structure (22).

7. The knee joint exercise device according to claim 5, characterized in that: A first fixing plate (24) is fixedly provided on the side of the first disc-shaped structure (23), and the first fixing plate (24) is detachably connected to the lower leg.

8. The knee joint exercise device according to claim 7, characterized in that: A plurality of first straps (27) are fixedly arranged on the first fixing plate (24), and the first fixing plate (24) is detachably connected to the lower leg via the plurality of first straps (27).

9. The knee joint exercise device according to claim 5, characterized in that: A second fixing plate (25) is fixedly provided on the side of the second semi-circular disc structure (22), and the second fixing plate (25) is detachably connected to the thigh.

10. The knee joint exercise device according to claim 9, characterized in that: A plurality of second straps (28) are fixedly arranged on the second fixing plate (25), and the second fixing plate (25) is detachably connected to the thigh via the plurality of second straps (28).

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