Ankle joint dorsal extension and plantar flexion function training device

Abstract

The utility model relates to the technical field of rehabilitation instruments, in particular to an ankle joint dorsal extension and plantar flexion function training device which comprises a foot fixing plate and a shank fixing plate, one end of the foot fixing plate is rotationally connected with the lower end of the shank fixing plate through a rotating shaft body, and the ankle joint dorsal extension and plantar flexion function training device is characterized in that the rotating shaft body comprises a rotating rod and two rotating plates; the two rotating plates are oppositely arranged, rotating grooves are formed in the opposite sides of the two rotating plates, the two ends of the rotating rod are rotationally arranged in the rotating grooves of the two rotating plates respectively, the shank fixing plate is connected with the rotating rod, and the two rotating plates are connected with the foot fixing plate; an adjusting hole communicated with the bottom of the rotating groove is formed in the side, away from the rotating rod, of the rotating plate, an ejector rod is adjustably arranged in the adjusting hole, and one end of the ejector rod is connected with the end of the rotating rod in an abutting mode in the rotating groove. According to training requirements, different friction forces can be generated by adjusting the force of the ejector rod for propping against the end part of the rotating rod, so that the rotating resistance of the foot fixing plate and the shank fixing plate is controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of rehabilitation equipment, in particular to an ankle joint dorsiflexion and plantar flexion function training device. Background Art

[0002] When the ankle is injured, or after surgery or other treatments, a certain amount of activity is needed to speed up recovery, such as plantar flexion and dorsiflexion training. Plantar flexion: the toes are drooping, and the dorsum of the foot moves away from the front of the calf. Dorsiflexion: the toes are raised, and the dorsum of the foot moves toward the front of the calf. The normal range of ankle dorsiflexion is 20 to 30 degrees.

[0003] However, since there is no external pressure on the ankle joint itself to increase the intensity of training, some simple training equipment that increases joint pressure has been developed. For example, patent document publication number CN216628838U, ankle-foot orthosis, includes an integrated support of the sole and the side of the calf, the side of the calf is located on one side of the sole, the sole is used to contact and fit tightly with the sole, the side of the calf is used to contact and fit tightly with the side of the calf, and a strap for fixing the calf to the side of the calf is passed through the upper part of the side of the calf; an adjustment strap is provided on the bottom surface of the sole, one end of the adjustment strap is fixed to the bottom surface of the sole, and the other end of the adjustment strap can be passed through from the side of the sole away from the side of the calf and fixed to the side of the calf.

[0004] When the above device is used, due to the integrated support provided at the sole and the side of the calf, the resistance is generated by the elasticity of the material itself to perform plantar flexion and dorsiflexion training, and the resistance during training cannot be adjusted according to actual conditions. Utility Model Content

[0005] The utility model aims to provide an ankle dorsiflexion and plantar flexion function training device to solve the problem that the resistance during the training cannot be adjusted according to the actual situation, as in the background art, by relying on the elasticity of the material itself to generate resistance for plantar flexion and dorsiflexion training.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A dorsiflexion and plantar flexion functional training device for an ankle joint comprises a foot fixing plate and a calf fixing plate, one end of the foot fixing plate is rotatably connected to the lower end of the calf fixing plate via a rotating shaft, and is characterized in that the rotating shaft comprises a rotating rod and two rotating plates, the two rotating plates are arranged opposite to each other, and opposite sides are each provided with a rotating groove, the two ends of the rotating rod are respectively rotatably arranged in the rotating grooves of the two rotating plates, the calf fixing plate is connected to the rotating rod, and the two rotating plates are both connected to the foot fixing plate; an adjusting hole connected to the bottom of the rotating groove is arranged on the side of the rotating plate away from the rotating rod, a push rod is adjustably arranged in the adjusting hole, and one end of the push rod is connected to the end of the rotating rod in the rotating groove.

[0008] A further technical solution is that an adjusting plate is provided on the side of the rotating plate away from the rotating rod. A connecting ring is provided around the adjusting hole on the side of the rotating plate away from the rotating rod. An external thread is provided around the outer wall of the connecting ring. An adjusting circular groove is provided on the side of the adjusting plate facing the connecting ring. An internal thread matching the external thread is provided around the groove wall of the adjusting circular groove. One end of the ejector rod away from the rotating rod is in top contact connection with the bottom of the adjusting circular groove through a spring.

[0009] A further technical solution is that a top groove matching the ejector rod is provided at the end of the rotating rod, and the end of the ejector rod is movably arranged in the top groove.

[0010] A further technical solution is that a rubber layer is provided at one end of the ejector rod placed in the top groove.

[0011] A further technical solution is that a limiting groove is recessed at one end of the ejector rod facing the adjusting circular groove, and one end of the spring facing the ejector rod is placed in the limiting groove.

[0012] A further technical solution is that a displacement sensor is vertically installed on the side of the lower leg fixing plate away from the foot fixing plate. The measuring rod of the displacement sensor is arranged downward and is connected with a roller at the lower end. A measuring plate matching the displacement sensor is horizontally extended at one end where the foot fixing plate is connected to the lower leg fixing plate, and the roller is slidably connected with the measuring plate.

[0013] A further technical solution is that a fixing ring is fixedly sleeved on the middle part of the rotating rod, and the lower end of the lower leg fixing plate is connected with the fixing ring.

[0014] A further technical solution is that a first fixing band is provided on the upper side of the foot fixing plate, and a second fixing band is provided on the lower leg fixing plate.

[0015] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. When performing ankle dorsiflexion and plantar flexion function training, the patient's foot is fixed on the foot fixing plate, and the lower leg is fixed on the lower leg fixing plate. When the patient performs dorsiflexion and plantar flexion, the foot fixing plate can rotate around the rotating shaft body. According to the training requirements, different frictions can be generated by adjusting the force of the ejector rod against the end of the rotating rod, so as to control the resistance size of the rotation of the foot fixing plate and the lower leg fixing plate, and solve the problem in the prior art that relying on the elasticity of the material itself to generate resistance for plantar flexion and dorsiflexion training cannot adjust the resistance during training according to the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of a device for ankle dorsiflexion and plantar flexion function training of the present utility model.

[0017] Figure 2This is a partial side view of a plantar flexion and dorsiflexion function training device for the ankle joint of the present utility model.

[0018] Figure 3 This is a schematic cross-sectional view of the rotating shaft body of a plantar flexion and dorsiflexion function training device for the ankle joint of the present utility model.

[0019] Icon: 1 - Foot fixing plate, 2 - Calf fixing plate, 3 - Rotating shaft body, 4 - Rotating rod, 5 - Rotating plate, 6 - Rotating groove, 7 - Adjusting hole, 8 - Jack rod, 9 - Adjusting plate, 10 - Connecting ring, 11 - Adjusting circular groove, 12 - Spring, 13 - Top groove, 14 - Limiting groove, 15 - Displacement sensor, 16 - Measuring rod, 17 - Roller, 18 - Measuring plate, 19 - Fixed ring, 20 - First fixing belt, 21 - Second fixing belt. Detailed implementation mode

[0020] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Figures 1 to 3 The following shows an embodiment of the present utility model.

[0022] Embodiment 1:

[0023] As Figure 1 , 3 shown, a plantar flexion and dorsiflexion function training device for the ankle joint includes a foot fixing plate 1 and a calf fixing plate 2. One end of the foot fixing plate 1 is rotatably connected to the lower end of the calf fixing plate 2 through a rotating shaft body 3. It is characterized in that the rotating shaft body 3 includes a rotating rod 4 and two rotating plates 5. The two rotating plates 5 are arranged oppositely, and rotating grooves 6 are arranged on the opposite sides. The two ends of the rotating rod 4 are respectively rotatably arranged in the rotating grooves 6 of the two rotating plates 5. The calf fixing plate 2 is connected to the rotating rod 4, and both rotating plates 5 are connected to the foot fixing plate 1; an adjusting hole 7 communicating with the bottom of the rotating groove 6 is arranged on the side of the rotating plate 5 away from the rotating rod 4. A jack rod 8 is adjustably arranged in the adjusting hole 7, and one end of the jack rod 8 is in contact with the end of the rotating rod 4 in the rotating groove 6. When performing plantar flexion and dorsiflexion function training of the ankle joint, the patient's foot is fixed on the foot fixing plate 1, and the calf is fixed on the calf fixing plate 2. When the patient performs dorsiflexion and plantar flexion, the foot fixing plate 1 can rotate around the rotating shaft body 3. According to the training requirements, different frictional forces can be generated by adjusting the force of the jack rod 8 pressing against the end of the rotating rod 4, so as to control the resistance of the foot fixing plate 1 and the calf fixing plate 2 to rotate, solving the problem in the prior art that relying on the elasticity of the material itself to generate resistance for plantar flexion and dorsiflexion training, and being unable to adjust the resistance during training according to the actual situation.

[0024] As shown Figure 3 in the figure, on the side of the rotating plate 5 away from the rotating rod 4, an adjusting plate 9 is provided. On the side of the rotating plate 5 away from the rotating rod 4, a connecting ring 10 is arranged around the adjusting hole 7. An external thread is arranged around the outer wall of the connecting ring 10. On the side of the adjusting plate 9 facing the connecting ring 10, an adjusting circular groove 11 is provided. An internal thread matching the external thread is arranged around the groove wall of the adjusting circular groove 11. One end of the ejector rod 8 away from the rotating rod 4 is in top contact connection with the bottom of the adjusting circular groove 11 through a spring 12. When adjusting the resistance of the ankle dorsiflexion and plantar flexion function training, by rotating the adjusting plate 9, the adjusting plate 9 controls the distance between the adjusting plate 9 and the rotating plate 5 through the cooperation of the external thread and the internal thread, so as to control the distance between the bottom of the adjusting circular groove 11 and the end of the ejector rod 8, thereby controlling the length of the spring 12. With the elastic potential energy generated by the spring 12 at different lengths, different pressures can be generated between the ejector rod 8 and the end of the rotating rod 4, so as to control the resistance when the rotating shaft rotates by means of the frictional force under different pressures. Such a setting is not only convenient to adjust, but also has high adjustment accuracy, and can finely adjust the resistance size by means of different rotation amounts of the adjusting plate 9.

[0025] At the end of the rotating rod 4, a top groove 13 matching the ejector rod 8 is provided. The end of the ejector rod 8 is movably arranged in the top groove 13. By providing the top groove 13, the connection position between the ejector rod 8 and the rotating rod 4 can be restricted.

[0026] One end of the ejector rod 8 placed in the top groove 13 is provided with a rubber layer. By providing the rubber layer, a large frictional force can be generated by means of the rubber layer to increase the resistance.

[0027] One end of the ejector rod 8 facing the adjusting circular groove 11 is recessed to form a limiting groove 14. One end of the spring 12 facing the ejector rod 8 is placed in the limiting groove 14. By providing the limiting groove 14, the connection position between the spring 12 and the ejector rod 8 can be limited, so that the spring 12 will not shift, and in this way, the spring 12 can always provide an axial thrust to the ejector rod 8.

[0028] Embodiment 2:

[0029] On the basis of the foregoing embodiment, as shown Figure 2As shown in the figure, a displacement sensor 15 is vertically installed on the side of the calf fixing plate 2 away from the foot fixing plate 1. The measuring rod 16 of the displacement sensor 15 is arranged downward, and a roller 17 is connected to the lower end. A measuring plate 18 matching the displacement sensor 15 is horizontally extended at one end where the foot fixing plate 1 and the calf fixing plate 2 are connected, and the roller 17 is slidably connected to the measuring plate 18. With the help of the displacement sensor 15, when performing ankle dorsiflexion and plantar flexion function training, when the foot fixing plate 1 and the calf fixing plate 2 rotate around the rotating shaft body 3, it will drive the measuring plate 18 to swing, so that the contact point between the measuring plate 18 and the roller 17 will drive the measuring rod 16 to perform reciprocating telescopic motion. The data of the rotation angle of the foot fixing plate 1 and the calf fixing plate 2 can be obtained by means of the change in the displacement length. When the data of the displacement sensor 15 undergoes a periodic change, that is, when the measuring rod 16 extends and retracts once, it means that the patient has completed one training. The displacement sensor 15 is transmitted to the user terminal by means of wire, Bluetooth, wireless, etc., so that the user terminal can obtain the training data, and it is convenient for the doctor to make corresponding training adjustments according to these training data.

[0030] Embodiment 3:

[0031] On the basis of the foregoing embodiments, as Figure 1 shown, a fixing ring 19 is fixedly sleeved in the middle of the rotating rod 4, and the lower end of the calf fixing plate 2 is connected to the fixing ring 19. By setting the fixing ring 19, it is convenient to connect the rotating shaft to the calf fixing plate 2.

[0032] A first fixing belt 20 is arranged on the upper side of the foot fixing plate 1, and a second fixing belt 21 is arranged on the calf fixing plate 2. By means of the first fixing belt 20, it is convenient to fix the foot on the foot fixing plate 1. By setting the second fixing belt 21, it is convenient to fix the calf on the calf fixing plate 2. In this way, when performing training, the foot can drive the foot fixing plate 1 to rotate around the end of the calf fixing plate 2 through the rotating shaft body 3.

[0033] Although the present invention has been described herein with reference to multiple explanatory embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and implementation manners, and these modifications and implementation manners will fall within the scope of the principles and spirit disclosed in this application. More specifically, within the scope of the disclosure, the drawings and the claims of this application, various variations and improvements can be made to the components and / or layouts of the subject combination layout. In addition to the variations and improvements made to the components and / or layouts, other uses will also be obvious to those skilled in the art.

Claims

1. An ankle joint dorsiflexion and plantar flexion function training device, comprising a foot fixing plate (1) and a calf fixing plate (2), wherein one end of the foot fixing plate (1) is rotatably connected to the lower end of the calf fixing plate (2) via a rotating shaft (3), characterized in that: The rotating shaft body (3) comprises a rotating rod (4) and two rotating plates (5). The two rotating plates (5) are arranged opposite to each other and are each provided with a rotating groove (6) on one side thereof. The two ends of the rotating rod (4) are respectively rotatably arranged in the rotating grooves (6) of the two rotating plates (5). The calf fixing plate (2) is connected to the rotating rod (4), and the two rotating plates (5) are both connected to the foot fixing plate (1). An adjusting hole (7) communicating with the bottom of the rotating groove (6) is provided on one side of the rotating plate (5) away from the rotating rod (4). A push rod (8) is adjustably arranged in the adjusting hole (7), and one end of the push rod (8) is connected to the end of the rotating rod (4) in the rotating groove (6).

2. The ankle dorsiflexion and plantar flexion function training device according to claim 1, characterized in that: An adjusting plate (9) is provided on the side of the rotating plate (5) away from the rotating rod (4); a connecting ring (10) is provided around the adjusting hole (7) on the side of the rotating plate (5) away from the rotating rod (4); an external thread is provided around the outer wall of the connecting ring (10); an adjusting circular groove (11) is provided on the side of the adjusting plate (9) facing the connecting ring (10); an internal thread matching the external thread is provided around the groove wall of the adjusting circular groove (11); and an end of the push rod (8) away from the rotating rod (4) is connected to the bottom of the adjusting circular groove (11) by a spring (12).

3. The ankle dorsiflexion and plantar flexion function training device according to claim 2, characterized in that: The end of the rotating rod (4) is provided with a top groove (13) matching the top rod (8), and the end of the top rod (8) is movably arranged in the top groove (13).

4. The ankle dorsiflexion and plantar flexion function training device according to claim 3, characterized in that: One end of the top rod (8) placed in the top groove (13) is provided with a rubber layer.

5. The ankle dorsiflexion and plantar flexion function training device according to claim 2, characterized in that: One end of the push rod (8) facing the adjusting circular groove (11) is recessed to form a limiting groove (14), and one end of the spring (12) facing the push rod (8) is placed in the limiting groove (14).

6. The ankle dorsiflexion and plantar flexion function training device according to claim 1, characterized in that: A displacement sensor (15) is vertically mounted on a side of the calf fixing plate (2) away from the foot fixing plate (1); a measuring rod (16) of the displacement sensor (15) is arranged downwardly and is connected to a roller (17) at the lower end; a measuring plate (18) matching the displacement sensor (15) is horizontally extended from one end of the foot fixing plate (1) connected to the calf fixing plate (2); the roller (17) and the measuring plate (18) are slidably connected.

7. The ankle dorsiflexion and plantar flexion function training device according to claim 1, characterized in that: A fixing ring (19) is provided on the middle fixing sleeve of the rotating rod (4), and the lower end of the calf fixing plate (2) is connected to the fixing ring (19).

8. The ankle dorsiflexion and plantar flexion function training device according to claim 1, characterized in that: A first fixing belt (20) is provided on the upper side of the foot fixing plate (1), and a second fixing belt (21) is provided on the calf fixing plate (2).

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