Cerebral stroke disability rehabilitation training device based on ankle pump movement

Abstract

The invention discloses a cerebral apoplexy disability rehabilitation training device based on ankle pump movement, and belongs to the field of medical auxiliary devices. The device comprises a fixing frame, wherein a mounting hole is formed in the middle of the fixing frame; the gear ring is rotatably arranged on the fixing frame; a driving device; the driving gear is arranged at the output end of the driving device in a driving manner and is meshed with the gear ring; the first rotating handle is rotatably arranged on the gear ring; the second rotating handle is rotatably arranged on the gear ring; the number of the clamping devices is two, the clamping devices are rotatably arranged on the first rotating handle and the second rotating handle respectively, each clamping device comprises a front clamping plate, a rear clamping plate, a connecting shaft, a nut and a spring, the rear clamping plates are fixedly arranged on the connecting shafts, and one ends of the connecting shafts penetrate through the rear clamping plates and are rotatably arranged on the first rotating handle and / or the second rotating handle.

Description

Technical Field

[0001] The invention relates to an ankle pump exercise rehabilitation training device for cerebral stroke disability. Background Art

[0002] Ankle pump exercise refers to promoting blood circulation and lymphatic return in the lower limbs through the movement of the ankle joint like a pump. It can be divided into two groups of movements: flexion and extension and circle.

[0003] (1) Flexion and extension The patient lies flat or sits on the bed, relaxes the thighs, and then slowly plantar flexes the ankle to the maximum angle, that is, curls the toes upward and points them toward oneself, holds for about 10 seconds, then dorsiflexes the ankle downward, points the toes downward, holds for about 10 seconds, and flexes and extends the ankle repeatedly. The purpose is to allow the calf muscles to continuously contract.

[0004] (2) Circumduction is a combination of plantar flexion, inversion, dorsiflexion, and eversion of the ankle joint. It is performed in clockwise and counterclockwise directions, alternating between the two movements. It is better at increasing the peak velocity of femoral venous blood flow than ankle flexion and extension exercises alone.

[0006] Rehabilitation training is crucial for patients with stroke disabilities, especially early rehabilitation training, which can stimulate the brain to reshape, restore damaged neural networks, and more quickly restore functions such as movement, language, and daily living abilities, promote rehabilitation, improve the quality of life of patients, improve their self-care ability, improve their quality of life, and increase their sense of happiness.

[0007] Ankle joint exercise training is an important part of lower limb exercise rehabilitation. The importance is as follows: 1. Stability. The health of the ankle joint is very important for maintaining the stability of the body when standing and walking. It helps the body maintain balance in different positions and prevents falls. 2. Flexibility. The ankle joint allows the foot to move in multiple directions (such as flexion, extension, inversion and inversion). A flexible ankle joint helps to enhance the overall movement ability of the lower limbs. 3. Transmission. It can effectively transmit the power generated by the thigh and calf muscles to ensure the propulsion of the footsteps.

[0008] At present, for patients who need to stay in bed in the early stage or cannot get out of bed and move around on their own, most of them are assisted by their family members to do ankle exercises manually. However, the problems they face are: 1. The degree of standardization and standardization of rehabilitation training is not high, resulting in a lack of clear direction and goals for patients and their family members when participating. 2. The degree of participation in rehabilitation training is usually limited by the patient's physical condition (such as recovery degree, mobility, etc.) and the family members' ability to continue.

[0009] For disabled stroke patients, on the one hand, ankle pump exercise is urgently needed, but on the other hand, autonomous ankle pump exercise is very inconvenient, so there is a need to provide an ankle pump exercise training device. Summary of the invention

[0010] The present invention provides an ankle pump exercise stroke disability rehabilitation training device, which can solve the problems pointed out in the background technology.

[0011] An ankle pump exercise stroke disability rehabilitation training device, comprising: A fixing frame, wherein a mounting hole is provided in the middle thereof; a gear ring rotatably disposed on the fixing frame; Drive device; A driving gear, which is arranged at the output end of the driving device and meshes with the ring gear; A first rotating handle, rotatably disposed on the gear ring; A second turning handle is rotatably disposed on the gear ring; and The connecting parts of the first and second rotating handles and the inner side surface of the fixing frame are provided with a rotating shaft, a first motor and a third motor. The first and third motors are responsible for driving the first and second rotating handles to rotate forward and reverse around the rotating shaft.

[0012] as well as, The clamping device is two in number and is rotatably disposed on the first handle and the second handle respectively. The clamping device comprises a front clamping plate, a rear clamping plate, a connecting shaft, a nut, a spring, and a second motor. The rear clamping plate is fixedly disposed on the connecting shaft, one end of the connecting shaft passes through the rear clamping plate and is disposed on the first handle and / or the second handle, the front clamping plate is slidably disposed on the connecting shaft, an end of the connecting shaft away from the first handle and / or the second handle is provided with an external thread, the nut is provided with an internal thread hole matched with the external thread, and the spring is sleeved on the connecting shaft and is located between the front clamping plate and the nut.

[0013] The second motor controls the front clamping plate and the rear clamping plate to rotate around the connecting shaft.

[0014] More preferably, the fixing frame is annular and is provided with an annular sliding groove, and the gear ring is fixedly disposed in the sliding groove.

[0015] More preferably, it further comprises an adjustment device corresponding to the first rotating handle and the second rotating handle, the adjustment device comprising a fixing seat fixedly mounted on the fixing frame, a limit stopper and an adjustment screw. The fixing seat is provided with an arc-shaped limit groove, the first rotating handle and the second rotating handle are both provided with a limit rod, the limit rod is slidably arranged in the limit groove, the limit stopper is provided with an adjustment screw hole matched with the adjustment screw, the adjustment screw is rotatably arranged on the fixing seat, the adjustment screw and the adjustment screw hole are used to drive the limit stopper to move, and when the limit stopper moves, the sliding range of the limit rod can be limited.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The ankle joint rehabilitation training device of the present invention decomposes the classic ankle pump movement into the rotation movement of the sole of the foot in the sole plane and the rotation movement of the sole of the foot with the center axis of the sole as the axis. It cleverly avoids the limitation of the existing mechanical structure that cannot drive the sole of the foot to perform the classic ankle pump movement. It allows the classic ankle pump movement to achieve the training amount of the foot muscle / femoral vein blood flow peak velocity by using only the existing simple mechanical equipment.

[0017] When adjustment is needed, the compression degree of the spring can be adjusted by rotating the rotating nut, thereby adjusting the clamping force of the clamping device on the foot; the position of the limit block can also be adjusted by turning the adjusting knob in the adjusting device to drive the adjusting screw to rotate, and the specific position is indicated by a scale line to limit the sliding stroke of the limit rod in the limit groove and adjust the range of motion of the ankle joint, so that the compression degree and stroke range of training can be manually adjusted, with high safety and strong reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of an ankle pump exercise stroke disability rehabilitation training device (with a hidden drive device and drive gear) provided by the present invention Figure 1 ; Figure 2 A schematic diagram of the working structure of an ankle pump exercise stroke disability rehabilitation training device provided by the present invention; Figure 3 A schematic diagram of the structure of an ankle pump exercise stroke disability rehabilitation training device (with a hidden drive device and drive gear) provided by the present invention Figure 2 ; Figure 4 A schematic diagram of the structure of an ankle pump exercise stroke disability rehabilitation training device (with a hidden drive device and drive gear) provided by the present invention Figure 3 ; Figure 5 Schematic diagram of the working structure of the clamping device.

[0019] Figure 6The side projection of the sole of the foot when starting the first and third motors.

[0020] Figure 7 This is the orthographic projection of the sole of the foot when starting the first and third motors.

[0021] Figure 8 Side projection of the sole of the foot when starting the second motor.

[0022] Fig. 9 This is the orthographic projection of the sole of the foot when starting the second motor.

[0023] Fig.10 When the drive gear 30 is driven to rotate to start the drive device, the side projection diagram of the thigh and calf / .

[0024] Fig.11 An angled view of the adjustment device.

[0025] Fig.12 This is a diagram showing the adjustment device from another angle.

[0026] Description of reference numerals: 10. Fixing frame, 11. Gear ring, 20. Clamping device, 21. First handle, 211. First motor, 22. Front splint, 23. Rear splint, 231. Connecting shaft, 24. Adjusting device, 25. Nut, 26. Spring, 27. Second motor, 241. Fixing seat, 2411. Limiting groove, 242. Adjusting screw, 243. Adjusting knob, 244. Limiting block, 30. Driving gear, 31. Second handle, 311. Third motor DETAILED DESCRIPTION

[0027] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0028] like Figures 1 to 5 As shown, an ankle pump exercise stroke disability rehabilitation training device provided by an embodiment of the present invention comprises: A fixing frame 10, wherein a mounting hole is provided in the middle thereof; A gear ring 11 is fixedly arranged on the outer surface of the fixing frame 10; Drive device; A driving gear 30, which is arranged at the output end of the driving device and meshes with the ring gear 11; A first rotating handle 21 is rotatably disposed on the inner side surface of the fixing frame 10; A second handle 31 is rotatably disposed on the inner side surface of the fixing frame 10; like Figure 2The connection part between the first and second rotating handles 21 and 31 and the inner side surface of the fixing frame 10 is provided with a rotating shaft, a first motor 211 and a third motor 311. The first and third motors 211 and 311 are responsible for driving the first and second rotating handles 21 and 31 to rotate forward and reverse around the rotating shaft.

[0029] as well as, The clamping device 20 is two in number and is rotatably disposed on the first rotating handle 21 and the second rotating handle 31, respectively (e.g. Figure 5 ) The clamping device 20 includes a front clamping plate 22, a rear clamping plate 23, a connecting shaft 231, a nut 25, a spring 26, and a second motor 27. The rear clamping plate 23 is fixedly arranged on the connecting shaft 231, one end of the connecting shaft 231 passes through the rear clamping plate 23 and is arranged on the first turning handle 21 and / or the second turning handle 31, the front clamping plate 22 is slidably arranged on the connecting shaft 231, the end of the connecting shaft 231 away from the first turning handle 21 and / or the second turning handle 31 is provided with an external thread, the nut 25 is provided with an internal thread hole matched with the external thread, and the spring 26 is sleeved on the connecting shaft and located between the front clamping plate 22 and the nut 25.

[0030] The second motor 27 controls the front clamping plate 22 and the rear clamping plate 23 to rotate around the connecting shaft 231 (the motor assembly diagram is relatively complicated, so it is not drawn. This is the prior art, and technicians in this field can easily understand its assembly method. Driving the front clamping plate 22 and the rear clamping plate 23 to rotate in an arc around the connecting shaft 231 is also a mature working method in the prior art).

[0031] Specifically, the fixing frame 10 is annular and is provided with an annular sliding groove, and the gear ring 11 is arranged in the sliding groove.

[0032] like Fig.11 , 12 , and also includes an adjustment device 24 corresponding to the first rotating handle 21 and the second rotating handle 31, the adjustment device 24 includes a fixed seat 241 fixedly mounted on the fixed frame 10, a limit stopper 244 and an adjustment screw 242. The fixed seat 241 is provided with an arc-shaped limit groove 2411, the first rotating handle 21 and the second rotating handle 31 are both provided with a limit rod 211, the limit rod 211 is slidably arranged in the limit groove 2411, the limit stopper 244 is provided with an adjustment screw hole matched with the adjustment screw 242, the adjustment screw 242 is rotatably arranged on the fixed seat 241, the adjustment screw 242 and the adjustment screw hole are used to drive the limit stopper 244 to move, and when the limit stopper 244 moves, it can limit the sliding range of the limit rod 211.

[0033] When in use, the user lies flat on the bed, stretches the left and right feet out of the bed, and exposes the left sole (similar to the right sole) to naturally tilt outward and leftward. The training device is put on the left and right soles. The driving device is set near the training device, and the gear 30 is meshed with the gear ring 11.

[0034] Rotate the nut 25 outward to separate the front splint 22 and the rear splint 23, insert the outer parts of the soles of the left and right feet between the front splint 22 and the rear splint 23 of the corresponding clamping device 20, hold the rear splint 23 by hand to keep it from rotating and thus drive the connecting shaft from rotating, and then rotate the nut 25 in the opposite direction to make the spring 26 press against the front splint 22, and the front splint 22 clamps the soles of the feet under the action of the spring 26.

[0035] When the first and third motors 211 and 311 drive the first and second rotating handles 21 and 31 to rotate around the rotating axis by plus or minus 20 degrees (the angle can be adjusted, and the maximum angle shall not exceed plus or minus 20 degrees) (the plane where the fixing frame 10 is located is 0 degrees), since the outer soles of the left and right feet are clamped by the front splint 22 and the rear splint 23, the left and right soles of the human body will be like Figure 6 The rectangle in the figure (when the sole of the foot is vertical, the projection of the sole of the foot looks like a rectangle when looking from the top of the head to the foot) rotates forward and backward around the center line of the length of the sole of the foot, and performs inversion and eversion of the sole of the foot / ankle. Figure 6 In the case of the rectangle, it rotates left and right along the central axis (the rotation line on the paper represents the rotation inside and outside the paper). Figure 7 In the middle, it is viewed from the toes to the heel (the projection of the sole of the foot looks like a line segment, and the thick black solid line represents the position of the projection line of the sole of the foot when the sole of the foot is in a natural state and the training device is not started. The dotted line represents the position of the projection line of the sole of the foot when the first and third motors 211 and 311 are started), the sole of the foot is turned left and right (the line segment swings up and down around the midpoint like a seesaw), at this time, the inversion and eversion movement of the sole of the foot / ankle is formed (this movement, there are real pictures on the Internet).

[0036] When the second motor 27 controls the front splint 22 and the rear splint 23 to rotate forward and backward around the connecting shaft 231 (the angle can be adjusted, and the maximum angle shall not exceed 25 degrees), the outer soles of the left and right feet are clamped by the front splint 22 and the rear splint 23. Figure 8 The rectangle in the figure (the rectangle represents the sole of the foot in a vertical position) swings up and down with the center line of the sole width as the reference line. Figure 8 The black solid line represents the position of the sole of the foot in a natural state when the training device is not activated (angle of view and Figure 6When the second motor 27 is started, the thin dotted line represents the position of the foot swinging up and down with the center line of the width direction of the foot as the reference line. Fig. 9 (Perspective and Figure 7 The position of the line segment representing the sole of the foot has not changed.

[0037] When the driving device drives the gear 30 to rotate, it drives the gear ring 11 and the fixing frame 10 to rotate (the angle can be adjusted, and the maximum angle shall not exceed 20 degrees in both directions). Since the outer soles of the left and right feet are clamped by the front splint 22 and the rear splint 23, and since the rotation driving force is relatively large, the rotation angle is also relatively large. At this time, the left and right soles of the human body will drive the entire calf and thigh to perform positive and negative rotation movements with the human hip joint as the base point (with the human calf bone and thigh bone as the axis). This is reflected in Fig.10 (Perspective and Figure 6 Similarly, the projection of the human calf / bone and thigh / bone is a circle), which means that the circle rotates 30 degrees forward and backward around the center of the circle.

[0038] The circle movement in the classic ankle pump exercise is better than ankle flexion and extension exercises alone in increasing the peak velocity of femoral venous blood flow. However, this action that the human body can easily do - drawing circles around the ankle with the sole / toes, is particularly difficult to do with a mechanical device to guide the sole of the foot. Because when a mechanical device guides the sole / toes to draw circles around the ankle, there are only two ways to ensure safety: One is to capture (fix) a point on the sole / toe, and use this point to drive the sole / toe to draw a circle around the ankle - mechanical equipment can only perform circular motion with a fixed radius - but when the sole / toe draws a circle around the ankle, the radius of any point on the sole / toe from the ankle (center of the circle) is constantly changing. This is caused by the physiological structure of the sole (the sole is an irregularly shaped object).

[0039] The second method is to clamp the sole of the foot with a splint, and then move the splint in a circular motion while allowing the sole of the foot to slide in the splint. However, it can also be found that when the sole / toes circle around the ankle, the plane where the sole of the foot is located is constantly changing its angle, that is, it is impossible for the splint to change its angle while moving in a circular motion around the ankle with a fixed radius.

[0040] Of course, adaptive devices can also be used, such as devices that can change the radius to perform circular motion. However, adaptive devices are not very safe (in case the radius cannot be changed in real time during the guidance process), which may cause discomfort or injury to the user.

[0041] Therefore, although there are many existing autonomous ankle pump exercise machines, they all have one common feature, that is, the classic ankle pump exercise is either cut corners, and the trajectory of the sole of the foot is not a complete 360-degree ankle pump exercise, such as only 90 degrees or 180 degrees (the arc of the circle drawn by the sole of the foot is still fixed in radius). Or the mechanical equipment only drives the sole of the foot to do the simplest forward and backward hooking process, and does not perform a 360-degree rotation of the ankle joint.

[0042] The inventor has conducted an in-depth study on the characteristics of the circling action in the ankle pump exercise and the operation characteristics of the mechanical equipment, and has innovated a new method, which is to decompose the circling action into actions that can be easily completed by the existing mature mechanical equipment structure and are relatively safe for the human body.

[0043] Specifically, the action of drawing a circle around the ankle with the sole / toes is broken down into: 1. The soles of the feet are Figure 6 The rectangle in the figure (when the sole of the foot is vertical, when looking down at the foot from the top of the human head, the projection of the sole of the foot looks like a rectangle) rotates forward and backward around the center line of the length direction of the sole of the foot as the axis, performing inversion and eversion movements of the sole of the foot / ankle.

[0044] 2. The soles of the feet are Figure 8 The rectangle in the figure (the rectangle represents the sole of the foot in a vertical state. The viewing angle of the sole of the foot is the same as Figure 6 Same) Use the center line of the width of the sole as the reference line and swing up and down.

[0045] Although the amplitude of these two movements is not as good as the complete 360-degree ankle pump movement, they basically contain the muscle and bone movement elements in the ankle pump movement. Moreover, the mechanical structure - the first and second handles 21 and 31 rotate positively and negatively 20 degrees around the axis, and the front splint 22 and the rear splint 23 rotate positively and negatively around the connecting shaft 231 - are all safe and reliable reciprocating movements performed by existing mature mechanical structures. Moreover, the ankle joint is very safe to do these things under the guidance of mechanical equipment. As for the movement amplitude not being as good as a 360-degree circle, it can be compensated by increasing the movement time.

[0046] After decomposing such movements, it was unexpectedly discovered that the driving device superimposed on the above equipment drives the gear 30 to rotate, thereby driving the gear ring 11 and the fixing frame 10 to rotate. Unexpectedly, at this time, the left and right soles of the human body will drive the entire calf and thigh to perform positive and negative rotation movements with the human hip joint as the base point (with the human calf bone and thigh bone as the axis). In the future, for the elderly who lack exercise or the disabled patients who lie in bed for a long time, more lower limb muscles can be exercised to the maximum extent and blood flow can be promoted.

Claims

1. An ankle pump exercise stroke disability rehabilitation training device, comprising: A fixing frame, wherein a mounting hole is provided in the middle thereof; a gear ring rotatably disposed on the fixing frame; Drive device; A driving gear, which is arranged at the output end of the driving device and meshes with the ring gear; A first rotating handle, rotatably disposed on the gear ring; A second rotating handle is rotatably disposed on the gear ring; as well as, The connecting part of the first and second rotating handles and the inner side surface of the fixing frame is provided with a rotating shaft, a first motor and a third motor, and the first and third motors are responsible for driving the first and second rotating handles to rotate forward and reverse around the rotating shaft; and The clamping device is two in number and is rotatably disposed on the first handle and the second handle respectively. The clamping device comprises a front clamping plate, a rear clamping plate, a connecting shaft, a nut, a spring, and a second motor. The rear clamping plate is fixedly disposed on the connecting shaft, one end of the connecting shaft passes through the rear clamping plate and is disposed on the first handle and / or the second handle, the front clamping plate is slidably disposed on the connecting shaft, an end of the connecting shaft away from the first handle and / or the second handle is provided with an external thread, the nut is provided with an internal thread hole matched with the external thread, and the spring is sleeved on the connecting shaft and is located between the front clamping plate and the nut.

2. The ankle pump exercise stroke disability rehabilitation training device as claimed in claim 1, characterized in that: The fixing frame is annular and is provided with an annular sliding groove, and the sliding block is fixedly arranged in the sliding groove.

3. The ankle pump exercise stroke disability rehabilitation training device as claimed in claim 1, characterized in that: The invention also includes an adjustment device corresponding to the first rotating handle and the second rotating handle, wherein the adjustment device includes a fixing seat fixedly mounted on the fixing frame, a limit stopper and an adjustment screw. The fixing seat is provided with an arc-shaped limit groove, and the first rotating handle and the second rotating handle are both provided with limit rods, which are slidably arranged in the limit groove, and the limit stopper is provided with an adjustment screw hole matched with the adjustment screw, and the adjustment screw is rotatably arranged on the fixing seat, and the adjustment screw and the adjustment screw hole are used to drive the limit stopper to move, and when the limit stopper moves, the sliding range of the limit rod can be limited.

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