Rehabilitation training mechanism for flexion and extension of ankle joint
By designing a flexion and extension rehabilitation training institution for the ankle joint, and using an electric telescopic device to achieve automatic adjustment of the ankle joint angle, the problem of poor ankle rehabilitation training in the prior art is solved, the risks of ankle joint sclerosis and venous thrombosis are prevented, and the convenience and effectiveness of the equipment are improved.
Patent Information
- Application Number
- CN202411862374.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-03-11
AI Technical Summary
The existing technology is difficult to effectively carry out ankle rehabilitation training, resulting in an increased risk of ankle sclerosis and venous thrombosis, and the equipment is bulky, expensive and requires full-time care.
An ankle flexion and extension rehabilitation training mechanism including a subankle fixation plate and ankle fixation plate is designed. The automatic angle adjustment of the ankle joint is achieved through an electric telescopic device, allowing patients to undergo rehabilitation training for dorsiflexion and plantar flexion movements on their own.
It effectively prevents the formation of ankle joint stiffness and venous thrombosis, and the equipment is simple, light and low in cost. Patients can exercise on their own without the need for full-time care, which improves the effectiveness and convenience of rehabilitation training.
Smart Images
Figure CN119587335A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of human skeleton rehabilitation training devices, and in particular to a rehabilitation training mechanism for ankle joint flexion and extension. Background Art
[0002] There are a large number of people with lower limb injuries in my country, and the number is still increasing every year. At present, there are limb joint rehabilitation training machines in my country, but there is a serious imbalance between supply and demand, and most of the existing limb joint rehabilitation training machines are expensive, bulky, and the wearer needs to be accompanied by a normal person throughout the whole process.
[0003] Patients with fractures of the thigh or calf in the lower limbs are required to undergo rehabilitation training of various joints during rehabilitation training to ensure that basic functions do not degenerate. Due to the long distance of the ankle joint and the pain in the leg itself, it is inconvenient for the patient to use external force to perform rehabilitation training on the ankle joint. This results in the limitation of the dorsiflexion and plantar flexion angles of the ankle joint during the rehabilitation process, and may even cause joint sclerosis. In severe cases, secondary surgery such as release is required. After the patient's lower limb is injured, due to poor blood circulation, venous thrombosis is very likely to occur in the affected limb. Summary of the invention
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a rehabilitation training mechanism for ankle flexion and extension, so as to achieve the purpose of effectively training the ankle joints of patients with lower limb injuries, preventing ankle sclerosis and preventing venous thrombosis.
[0005] The present invention is achieved through the following technical solutions:
[0006] A rehabilitation training mechanism for ankle flexion and extension, comprising an under-ankle fixing plate and an over-ankle fixing plate, wherein the rear end of the under-ankle fixing plate is rotatably connected to the bottom end of the over-ankle fixing plate, an under-ankle strap is provided on the upper surface of the under-ankle fixing plate, an over-ankle strap is provided on the front side of the over-ankle fixing plate, and the under-ankle strap and the over-ankle strap are connected via an electric telescopic device;
[0007] The electric telescopic device includes an electric telescopic seat, a motor, a gear, and two racks. The motor is installed on the electric telescopic seat. The gear is coaxially fixedly connected to the output shaft of the motor. The two racks are arranged on both sides of the gear and are respectively meshed with the gears. The two racks are parallel to each other and are respectively slidably installed on the electric telescopic seat. The two racks are respectively provided with connecting pieces at different ends along the length direction. The connecting pieces of the two racks are respectively detachably rotatably connected to the ankle strap and the ankle strap. The motor drives the gear to rotate, and the gear drives the two racks to move linearly in the opposite direction, thereby realizing the adjustment of the angle between the ankle fixation plate and the ankle fixation plate.
[0008] As a preferred solution for the above-mentioned ankle flexion and extension rehabilitation training mechanism, the electric telescopic seat includes a telescopic base plate that extends obliquely, and two left-right symmetrical pressure plates are fixedly connected to the bottom surface of the telescopic base plate. Two sliding grooves are formed between the two pressure plates and the bottom surface of the telescopic base plate respectively, and the two racks are respectively placed in the two sliding grooves, and the linear movement direction of the two racks is guided by the two sliding grooves.
[0009] As a preferred solution for the above-mentioned ankle flexion and extension rehabilitation training mechanism, a limiting groove is opened on each of the racks, and the limiting groove is a waist-shaped groove extending along the length direction of the rack. A limiting bolt is fixedly connected to each pressure plate, and the limiting bolts of the two pressure plates respectively correspond to the limiting grooves of the two racks, and the rod of the limiting bolt can slide back and forth along the length direction of the corresponding limiting groove.
[0010] As a preferred solution of the above-mentioned ankle flexion and extension rehabilitation training mechanism, the two connecting members of the racks are respectively hinged to the lower ankle strap and the upper ankle strap through a second hinge shaft.
[0011] As a preferred solution for the above-mentioned ankle flexion and extension rehabilitation training mechanism, the rear end of the ankle fixation plate below the ankle and the bottom end of the ankle fixation plate above the ankle are rotatably connected via two left and right connecting units, each connecting unit comprising a fixed hinge and a movable hinge hinged via a first hinge axis, the front end of the fixed hinge being fixed to the rear end of the ankle fixation plate below the ankle, and the upper end of the movable hinge being fixed to the bottom end of the ankle fixation plate above the ankle.
[0012] As a preferred solution for the above-mentioned ankle flexion and extension rehabilitation training mechanism, the upper surface of the infraankle fixation plate is provided with two infraankle straps arranged front and back, the infraankle strap located on the front side is the first infraankle strap, and the front side of the supraankle fixation plate is provided with two supraankle straps arranged up and down, the supraankle strap located on the upper side is the first supraankle strap, and the two rack connecting parts are rotatably connected to the first infraankle strap and the first supraankle strap respectively.
[0013] Compared with the prior art, the present invention has the following advantages:
[0014] The present invention provides a rehabilitation training mechanism for ankle flexion and extension, which is provided with an ankle fixing plate and an ankle fixing plate that are rotatably connected to each other, and an electric telescopic device is provided between the ankle fixing plate and the ankle fixing plate's straps, and the electric telescopic device is used to realize automatic telescopic movement through the motor of the electric telescopic device, so that the straps at both ends drive the ankle fixing plate and the ankle fixing plate to rotate, realize the control of the angle between the ankle fixing plate and the ankle fixing plate, and then realize the dorsiflexion and plantar flexion of the patient's ankle joint, effectively preventing the patient's ankle joint stiffness and the formation of venous thrombosis. At the same time, the rehabilitation training mechanism is simple in structure, light in weight, easy to process, low in cost, and convenient and quick to use. After setting the parameters, the patient can exercise by himself without the need for other people to accompany him throughout the whole process. In addition, its electric telescopic device adopts a transmission form of gears and two racks. The motor drives the gears to rotate to realize the linear motion of the two racks in opposite directions. Compared with the unidirectional motion transmission form, this bidirectional motion transmission form has more advantages. Its small stroke can achieve large displacement output, and the bidirectional output enables the patient's feet and lower end of the calf to move at the same time, which improves the stability of the output and the effectiveness of the patient's rehabilitation training. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the present invention.
[0016] Figure 2 It is a structural schematic diagram of the electric telescopic device of the present invention.
[0017] Figure 3 It is a schematic structural diagram of the electric telescopic device of the present invention with one of the pressing plates removed.
[0018] Numbers in the figure: 1 below-ankle fixing plate; 2 above-ankle fixing plate; 3 first hinge axis; 4 fixed hinge; 5 movable hinge; 6 below-ankle strap; 7 above-ankle strap; 8 electric telescopic device; 9 motor; 10 gear; 11 rack; 12 connecting piece; 13 second hinge axis; 14 hinge seat; 15 telescopic bottom plate; 16 pressure plate; 17 slide groove; 18 limit groove; 19 limit bolt. DETAILED DESCRIPTION
[0019] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.
[0020] See also Figures 1 to 3The present embodiment discloses a rehabilitation training mechanism for ankle flexion and extension, comprising an under-ankle fixing plate 1 and an over-ankle fixing plate 2, wherein the rear end of the under-ankle fixing plate 1 is rotatably connected to the bottom end of the over-ankle fixing plate 2. In the present embodiment, the rear end of the under-ankle fixing plate 1 and the bottom end of the over-ankle fixing plate 2 are rotatably connected via two left and right connecting units, each of which comprises a fixed hinge 4 and a movable hinge 5 hingedly connected via a first hinge shaft 3, wherein the front end of the fixed hinge 4 is fixed to the rear end of the under-ankle fixing plate 1, and the upper end of the movable hinge 5 is fixed to the bottom end of the over-ankle fixing plate 2.
[0021] An under-ankle strap 6 is provided on the upper surface of the under-ankle fixation plate 1, one end of the under-ankle strap 6 is a fixed end and the other end is a movable end, the fixed end of the under-ankle strap 6 is fixed on the under-ankle fixation plate 1, and the movable end of the under-ankle strap 6 is movably connected to the under-ankle fixation plate 1, for example, a through hole can be provided on the under-ankle fixation plate 1, and the movable end of the under-ankle strap 6 is passed through the through hole of the under-ankle fixation plate 1 and then tightly tied to the under-ankle fixation plate 1, so that the patient's foot can be fixed; an over-ankle strap 7 is provided on the front side of the over-ankle fixation plate 2, and the connection method of the over-ankle strap 7 and the over-ankle fixation plate 2 is the same as the connection method of the under-ankle strap 6 and the under-ankle fixation plate 1.
[0022] The lower ankle strap 6 and the upper ankle strap 7 are connected via an electric telescopic device 8 . The electric telescopic device 8 includes an electric telescopic seat, a motor 9, a gear 10, and two racks 11. The motor 9 is installed on the electric telescopic seat. The gear 10 is coaxially fixedly connected to the output shaft of the motor 9. The two racks 11 are arranged on both sides of the gear 10 and are respectively meshed with the gear 10. The two racks 11 are parallel to each other and are respectively slidably installed on the electric telescopic seat. The two racks 11 are respectively provided with connecting pieces 12 at different ends along the length direction. The connecting pieces 12 are hanging ears with holes. The connecting pieces 12 of the two racks 11 are respectively detachably rotatably connected to the ankle strap 6 and the ankle strap 7. In this embodiment, the connecting pieces 12 of the two racks 11 are respectively hinged to the ankle strap 6 and the ankle strap 7 through the second hinge shaft 13. The ankle strap 6 and the ankle strap 7 are respectively fixed with hinge seats 14. The second hinge shaft 13 passes through the connecting pieces 12 of the racks 11 and the corresponding hinge seats 14 in sequence to realize the detachable hinge of the two. The motor 9 drives the gear 10 to rotate, and the gear 10 drives the two racks 11 to move linearly in the opposite direction, thereby adjusting the angle between the upper ankle fixation plate 2 and the lower ankle fixation plate 1. By controlling the forward and reverse rotation of the motor 9, the movement direction of the two racks 11 can be controlled. When the motor 9 rotates forward, the connecting parts 12 of the two racks 11 move away from each other, realizing the extension action of the electric telescopic device 8; when the motor 9 rotates reversely, the connecting parts 12 of the two racks 11 move closer to each other, realizing the contraction action of the electric telescopic device 8.
[0023] In this embodiment, the upper surface of the infraankle fixation plate 1 is provided with two infraankle straps 6 arranged front to back, and the infraankle strap 6 located on the front side is the first infraankle strap 6. The front side of the supraankle fixation plate 2 is provided with two supraankle straps 7 arranged up and down, and the supraankle strap 7 located on the upper side is the first supraankle strap 7. The connecting parts 12 of the two racks 11 are rotatably connected to the first infraankle strap 6 and the first supraankle strap 7 respectively.
[0024] The electric telescopic seat includes an obliquely extended telescopic base plate 15, and two left-right symmetrical pressing plates 16 are fixedly connected to the bottom surface of the telescopic base plate 15. The two pressing plates 16 are fixedly connected to the telescopic base plate 15 by screws. Two slide grooves 17 are formed between the two pressing plates 16 and the bottom surface of the telescopic base plate 15. The two racks 11 are respectively placed in the two slide grooves 17, and the linear movement direction of the two racks 11 is guided by the two slide grooves 17.
[0025] A limiting groove 18 is formed on each rack 11, and the limiting groove 18 is a waist-shaped groove extending along the length direction of the rack 11. A limiting bolt 19 is fixedly connected to each pressure plate 16, and the limiting bolts 19 of the two pressure plates 16 correspond to the limiting grooves 18 of the two racks 11 respectively. The rod of the limiting bolt 19 can slide back and forth along the length direction of the corresponding limiting groove 18. The limiting groove 18 cooperates with the limiting bolt 19 to limit the movement stroke of the rack 11.
[0026] Before use, first remove the second hinge shaft 13 connecting the hinge seat 14 on the ankle strap 6 and the lower end of the electric telescopic device 8, remove the lower end of the electric telescopic device 8 from the ankle strap 6 and lift it upward, untie the movable ends of the two ankle straps 6, place the sole of the patient's foot on the ankle fixing plate 1, and then tie the movable ends of the two ankle straps 6 to the ankle fixing plate 1 to fix the patient's foot. Then untie the movable ends of the two ankle straps 7 so that the rear side of the lower end of the patient's calf is close to the front side of the ankle fixing plate 2, and then tie the movable ends of the two ankle straps 7 to the ankle fixing plate 2 to fix the lower end of the patient's calf. After that, install the lower end of the electric telescopic device 8 on the hinge seat 14 on the ankle strap 6, and the wearing of the rehabilitation training mechanism is completed.
[0027] The motor 9 is started, and the motor 9 drives the gear 10 to rotate, and the gear 10 drives the two meshing racks 11 to move in the opposite direction, and the motor 9 runs alternately in forward and reverse directions, and the interval time can be set as needed. When the motor 9 rotates forward, the electric telescopic device 8 extends, driving the patient's ankle joint to perform a plantar flexion movement with the instep downward; when the motor 9 rotates reversely, the electric telescopic device 8 contracts, driving the patient's ankle joint to perform a dorsiflexion movement with the instep upward; this reciprocating cycle can drive the ankle joint to achieve dorsiflexion and plantar flexion rehabilitation training movements.
[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A rehabilitation training mechanism for ankle flexion and extension, comprising an ankle fixation plate (1) and an ankle fixation plate (2), wherein the rear end of the ankle fixation plate (1) is rotatably connected to the bottom end of the ankle fixation plate (2), and characterized in that: The upper surface of the ankle fixing plate (1) is provided with an ankle strap (6), the front side of the ankle fixing plate (2) is provided with an ankle strap (7), and the ankle strap (6) and the ankle strap (7) are connected via an electric telescopic device (8); The electric telescopic device (8) comprises an electric telescopic seat, a motor (9), a gear (10), and two racks (11). The motor (9) is mounted on the electric telescopic seat. The gear (10) is coaxially fixedly connected to the output shaft of the motor (9). The two racks (11) are arranged on both sides of the gear (10) and mesh with the gears (10) respectively. The two racks (11) are parallel to each other and are slidably mounted on the electric telescopic seat respectively. Connectors (12) are respectively provided at different ends along the length direction of the two racks (11). The connectors (12) of the two racks (11) are respectively detachably rotatably connected to the ankle strap (6) and the ankle strap (7). The motor (9) drives the gear (10) to rotate, and the gear (10) drives the two racks (11) to move linearly in the opposite direction, thereby realizing the adjustment of the angle between the ankle fixing plate (2) and the ankle fixing plate (1).
2. The ankle flexion and extension rehabilitation training mechanism according to claim 1, characterized in that: The electric telescopic seat comprises a telescopic bottom plate (15) extending obliquely, two left-right symmetrical pressing plates (16) being fixedly connected to the bottom surface of the telescopic bottom plate (15), two sliding grooves (17) being formed between the two pressing plates (16) and the bottom surface of the telescopic bottom plate (15), two racks (11) being respectively placed in the two sliding grooves (17), and the linear movement directions of the two racks (11) are guided by the two sliding grooves (17).
3. The ankle flexion and extension rehabilitation training mechanism according to claim 2, characterized in that: A limiting groove (18) is formed on each of the racks (11), and the limiting groove (18) is a waist-shaped groove extending along the length direction of the rack (11). A limiting bolt (19) is fixedly connected to each of the pressure plates (16), and the limiting bolts (19) of the two pressure plates (16) correspond to the limiting grooves (18) of the two racks (11) respectively, and the rod of the limiting bolt (19) can slide back and forth along the length direction of the corresponding limiting groove (18).
4. The ankle flexion and extension rehabilitation training mechanism according to claim 1, characterized in that: The connecting parts (12) of the two racks (11) are respectively hinged to the ankle strap (6) and the ankle strap (7) through a second hinge shaft (13).
5. The ankle flexion and extension rehabilitation training mechanism according to claim 1, characterized in that: The rear end of the ankle fixing plate (1) and the bottom end of the ankle fixing plate (2) are rotatably connected via two left and right connecting units, each connecting unit comprising a fixed hinge (4) and a movable hinge (5) hingedly connected via a first hinge shaft (3), the front end of the fixed hinge (4) being fixed to the rear end of the ankle fixing plate (1), and the upper end of the movable hinge (5) being fixed to the bottom end of the ankle fixing plate (2).
6. The ankle flexion and extension rehabilitation training mechanism according to claim 1, characterized in that: The upper surface of the ankle fixing plate (1) is provided with two ankle straps (6) arranged front and back, the ankle strap (6) located at the front side is the first ankle strap (6), the front side of the ankle fixing plate (2) is provided with two ankle straps (7) arranged up and down, the ankle strap (7) located at the top is the first ankle strap (7), and the connecting parts (12) of the two racks (11) are rotatably connected to the first ankle strap (6) and the first ankle strap (7) respectively.