A leg limb rehabilitation therapy device and method of use thereof

Abstract

The application discloses a kind of leg limb rehabilitation physiotherapy device and its use method, belong to rehabilitation device technical field, including physiotherapy bed body, elastic plate heave mechanism, roller moving mechanism, driving mechanism and crank connecting rod mechanism.The application is driven by the same driving mechanism by setting elastic plate heave mechanism, roller moving mechanism and crank connecting rod mechanism, realizes the synchronous performance of the up and down heave of leg and the rolling massage of roller, and the up and down slight heave of elastic plate heave mechanism and crank connecting rod mechanism is driven, so that patient leg muscle is passively stretched and relaxed, it is helpful to relieve muscle stiffness, promote local blood circulation, and roller moving mechanism drives roller to reciprocate along patient leg, realizes deep massage to leg muscle.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation device technology, and in particular to a leg limb rehabilitation physiotherapy device. Background Technology

[0002] During postoperative recovery, patients often experience problems such as weakened leg muscle function, spasms, stiffness, and sensory abnormalities due to central or peripheral nerve damage. Effective leg rehabilitation physiotherapy is of great significance in promoting nerve function recovery, improving muscle blood circulation, relieving muscle fatigue and pain, and preventing complications such as muscle atrophy and deep vein thrombosis.

[0003] Currently, commonly used leg rehabilitation physiotherapy methods in clinical practice mainly include manual massage, physical therapy, and various rehabilitation equipment-assisted treatments. Manual massage requires a high level of professional skill from the operator, and is labor-intensive, inefficient, and makes it difficult to ensure consistency and continuity of treatment. While some existing mechanical leg rehabilitation devices can achieve basic massage or undulation functions, most have simple structures and independent functions, making it difficult to simultaneously achieve the synergistic effect of passive stretching and rolling massage of leg muscles on the same device. Furthermore, some devices suffer from motion interference, complex structures, and inconvenient adjustments during use, affecting rehabilitation effectiveness and user experience.

[0004] Therefore, it is necessary to develop a leg rehabilitation physiotherapy device that integrates leg stretching and roller massage, is compact in structure, coordinates movements, and is safe and convenient to use, in order to meet the actual needs of neurosurgical patients for postoperative leg rehabilitation. Summary of the Invention

[0005] The purpose of this invention is to provide a leg rehabilitation and physiotherapy device and its usage method. By setting up an elastic plate undulation mechanism, a roller movement mechanism and a crank connecting rod mechanism, and driving them in concert by the same drive mechanism, the up-and-down undulation stretching of the leg and the rolling massage of the roller are realized simultaneously.

[0006] To achieve the above objectives, the present invention provides a leg rehabilitation physiotherapy device, comprising a physiotherapy bed, an elastic plate undulation mechanism, a roller moving mechanism, a drive mechanism, and a crank-connecting rod mechanism. The elastic plate undulation mechanism, the roller moving mechanism, the crank-connecting rod mechanism, and the drive mechanism are connected to the physiotherapy bed. The drive mechanism drives the movement of the crank-connecting rod mechanism and the roller moving mechanism, and the crank-connecting rod mechanism drives the movement of the elastic plate undulation mechanism. The elastic plate undulation mechanism helps the user's two legs to gently undulate and stretch, and the roller moving mechanism can massage the user's leg muscles.

[0007] Preferably, the elastic plate undulation mechanism includes a high elastic plate and a sliding plate. One end of the high elastic plate is fixedly connected to the sliding plate. The physiotherapy bed is provided with a groove, and both the high elastic plate and the sliding plate are located in the groove. Rotating rods are fixedly connected to the two side walls of the other end of the high elastic plate. The rotating rods are rotatably connected to the side walls of the groove of the physiotherapy bed. Slider 1 is fixedly connected to both sides of the sliding plate. A slide rail is provided on the side wall of the groove of the physiotherapy bed. The slide rail is horizontally set, and slider 1 is slidably connected to the slide rail so that the sliding plate is slidably connected to the physiotherapy bed.

[0008] Preferably, the high-elasticity plate has two through slots II, which are arranged along the extension direction of the slide rail; the sliding plate has two through slots I, which are arranged horizontally and also along the extension direction of the slide rail.

[0009] Preferably, the roller moving mechanism includes two screws, two guide rods, two sliders, two fixed plates and two fixed plates. The fixed plates are fixed to the physiotherapy bed. One end of each screw is rotatably connected to the fixed plate, and the other end of each screw passes through the through groove on the slider. One end of each guide rod is fixedly connected to a first fixed plate, and the other end of the guide rod is fixedly connected to a second fixed plate; each screw passes through the second slider and is threadedly connected to the second slider, and each guide rod passes through the second slider to make the second slider move along the guide rod; Each of the two sliders is rotatably connected to a roller at its top, with the two rollers located in the through groove of the high-elasticity plate.

[0010] Preferably, the drive mechanism includes a motor, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear, and a fifth bevel gear, with the motor fixedly connected in a groove in the physiotherapy bed. The output shaft of the motor is connected to a fifth bevel gear, which meshes with the first bevel gear for transmission. The first bevel gear also meshes with the second bevel gear for transmission. The second bevel gear is positioned opposite to the fifth bevel gear. The other end of one screw is driven by the second bevel gear, the other end of the other screw is driven by the fourth bevel gear, the fourth bevel gear meshes with the third bevel gear, and the first bevel gear and the third bevel gear are driven by a connecting shaft. The connecting shaft is rotatably connected inside the bearing housing, and the fixed end of the bearing housing is fixed in the groove of the physiotherapy bed.

[0011] Preferably, the crank-connecting rod mechanism includes a disk, a connecting rod, and a connecting block, and two crank-connecting rod mechanisms are disposed between the sliding plate and the connecting shaft and are arranged symmetrically. The connecting block is fixed to the side wall end face of the sliding plate, the disc is fixed to the end of the connecting shaft, one end of the connecting rod is hinged to the side wall of the connecting block, and the other end of the connecting rod is hinged to the edge of the end face of the disc.

[0012] Preferably, the top of the roller is higher than the top end face of the physiotherapy bed.

[0013] Preferably, the physiotherapy bed is equipped with a controller, which is electrically connected to the motor.

[0014] Preferably, a rubber pillow is fixedly connected to the top of the physiotherapy bed; a protective cover is provided on the physiotherapy bed, which is located above the drive mechanism and the crank-connecting rod mechanism to protect the human body from injury by the drive mechanism.

[0015] The present invention discloses a method for using a leg and limb rehabilitation physiotherapy device, comprising the following steps: Step 1: The user lies on the physiotherapy bed with legs on the high-elasticity board, head on the rubber pillow, and feet on the sliding board. The feet and waist / abdomen are secured to the physiotherapy bed using straps. Step 2: The controller starts the motor, which rotates slowly. The output shaft of the motor controls the fifth bevel gear to rotate, which drives the first bevel gear to rotate. The first bevel gear drives the connecting shaft to rotate, which in turn drives the crank-connecting rod mechanism to move. The crank-connecting rod mechanism causes the sliding plate to move back and forth slowly. The sliding plate causes the high-elasticity plate to move up and down slightly, helping the user's legs to stretch up and down. Step 3: At the same time, the motor also controls the rotation of the first bevel gear and the third bevel gear. The first bevel gear drives the second bevel gear to rotate, the third bevel gear drives the fourth bevel gear to rotate, the rotation of the second bevel gear drives a screw to rotate, the screw drives a slider to move forward, and the rotation of the third bevel gear also drives a screw to rotate, the screw drives a slider to move forward. Step 4: The controller controls the motor to reverse, thereby driving the second slider to move in the opposite direction, so as to massage the user's legs, without affecting the slight up-and-down movement of the high elastic plate.

[0016] The advantages and positive effects of the leg and limb rehabilitation physiotherapy device and its usage method described in this invention are as follows: 1. This invention, by incorporating an elastic plate undulation mechanism and a roller movement mechanism, both driven collaboratively by the same drive mechanism, achieves simultaneous up-and-down stretching of leg muscles and rolling massage. The elastic plate undulation mechanism causes the highly elastic plate to undulate slightly, passively stretching and relaxing the patient's leg muscles, helping to relieve muscle stiffness and promote local blood circulation. The roller movement mechanism drives the roller to move back and forth along the patient's leg, achieving deep massage of the leg muscles. The two movement modes do not interfere with each other but work synergistically, significantly improving the overall effect of rehabilitation therapy.

[0017] 2. This invention uses a single motor as the power source, driving the elastic plate to undulate through a crank-connecting rod mechanism, while simultaneously driving the rollers to reciprocate through a bevel gear set and a screw transmission mechanism. It features a compact structure, high transmission efficiency, and low manufacturing cost. The motor's forward and reverse rotation control is simple, and the undulation frequency and massage stroke can be flexibly adjusted according to rehabilitation needs. It is easy to operate and suitable for patients at different stages of rehabilitation.

[0018] 3. In this invention, a second through groove is provided on the high elastic plate, and a first through groove is provided on the sliding plate. The screw of the roller moving mechanism passes through the first through groove, and the roller is located in the second through groove. The structure is reasonably arranged, which effectively avoids mutual interference between moving parts and ensures the stability and reliability of the device operation.

[0019] 4. This invention features a protective cover on the physiotherapy bed, isolating the drive mechanism from the patient's activity area and effectively preventing accidental injury from moving parts, ensuring high safety. Simultaneously, a rubber pillow is fixed to the top of the physiotherapy bed, enhancing patient comfort. The overall ergonomic design makes it suitable for rehabilitation use by neurosurgical patients after surgery.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a leg and limb rehabilitation physiotherapy device according to the present invention; Figure 2 This is a schematic diagram of the structure of the elastic plate undulation mechanism, roller moving mechanism, drive mechanism and crank connecting rod mechanism of the present invention; Figure 3 for Figure 2 The main view; Figure 4 for Figure 2 Another perspective illustration; Figure 5 for Figure 2 A bottom view.

[0022] Figure Labels 1. Physiotherapy bed frame; 2. Elastic plate undulation mechanism; 201. High elastic plate; 202. Rotating rod; 203. Sliding plate; 204. Through groove one; 205. Sliding block one; 206. Through groove two; 3. Roller moving mechanism; 301. Screw; 302. Guide rod; 303. Slider II; 304. Roller; 305. Fixed plate I; 306. Fixed plate II; 4. Drive mechanism; 401. Motor; 402. First bevel gear; 403. Second bevel gear; 404. Third bevel gear; 405. Fourth bevel gear; 406. Fifth bevel gear; 407. Bearing housing; 5. Crank-connecting rod mechanism; 501. Disc; 502. Connecting rod; 503. Connecting block; 6. Controller; 7. Protective cover; 8. Rubber pillow pad. Detailed Implementation

[0023] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application.

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1-5 As shown, a leg rehabilitation physiotherapy device includes a physiotherapy bed 1, an elastic plate undulation mechanism 2, a roller moving mechanism 3, a drive mechanism 4, and a crank connecting rod mechanism 5. The elastic plate undulation mechanism 2, the roller moving mechanism 3, the crank connecting rod mechanism 5, and the drive mechanism 4 are connected to the physiotherapy bed 1. The drive mechanism 4 drives the movement of the crank connecting rod mechanism 5 and the roller moving mechanism 3. The crank connecting rod mechanism 5 drives the elastic plate undulation mechanism 2 to move. The elastic plate undulation mechanism 2 helps the user's two legs to gently undulate and stretch. The roller moving mechanism 3 can massage the user's leg muscles.

[0027] The elastic plate undulation mechanism 2 includes a high elastic plate 201 and a sliding plate 203. One end of the high elastic plate 201 is fixedly connected to the sliding plate 203. The physiotherapy bed 1 is provided with a groove, and both the high elastic plate 201 and the sliding plate 203 are located in the groove. Rotating rods 202 are fixedly connected to the two side walls of the other end of the high elastic plate 201. The rotating rods 202 are rotatably connected to the side walls of the groove of the physiotherapy bed 1.

[0028] Slider 205 is fixedly connected to both sides of the sliding plate 203. A slide rail is provided on the side wall of the groove of the physiotherapy bed 1. The slide rail is horizontally set, and slider 205 is slidably connected to the slide rail so that the sliding plate 203 is slidably connected to the physiotherapy bed 1.

[0029] Specifically, slider 205 is matched with the slide rail, so that slider 205 is slidably connected to the slide rail.

[0030] The high-elasticity plate 201 has two through slots 206, which are arranged along the extension direction of the slide rail. The sliding plate 203 has two through slots 204, which are arranged horizontally and also along the extension direction of the slide rail.

[0031] Specifically, one end of the high-elasticity plate 201 is rotatably connected to the physiotherapy bed 1 via the rotating rod 202. When the sliding plate 203 moves to the left, the high-elasticity plate 201 can arch upward.

[0032] Specifically, the through slot 204 is larger than the outer diameter of the screw 301, so that the movement of the sliding plate 203 will not affect the movement of the screw 301 during horizontal movement.

[0033] The roller moving mechanism 3 includes two screws 301, two guide rods 302, two sliders 303, two fixing plates 305 and two fixing plates 306. The fixing plates 305 and 306 are fixed to the physiotherapy bed 1. One end of each screw 301 is rotatably connected to the fixing plate 305, and the other end of each screw 301 passes through the through groove 204 on the slider 203.

[0034] One end of each guide rod 302 is fixedly connected to the first fixing plate 305, and the other end of the guide rod 302 is fixedly connected to the second fixing plate 306. Each screw 301 passes through the second slider 303 and is threadedly connected to the second slider 303, and each guide rod 302 passes through the second slider 303 to make the second slider 303 move along the guide rod 302.

[0035] Each slider 2 303 has a roller 304 rotatably connected to its top, and the two rollers 304 are respectively located in the through groove 206 of the high elasticity plate 201.

[0036] Specifically, the top of slider 2 303 is fixedly connected to two brackets, and a roller 304 is rotatably connected between the two brackets.

[0037] The drive mechanism 4 includes a motor 401, a first bevel gear 402, a second bevel gear 403, a third bevel gear 404, a fourth bevel gear 405, and a fifth bevel gear 406. The motor 401 is fixedly connected to the groove in the physiotherapy bed 1.

[0038] A fifth bevel gear 406 is connected to the output shaft of the motor 401. The fifth bevel gear 406 meshes with the first bevel gear 402 for transmission. The first bevel gear 402 also meshes with the second bevel gear 403 for transmission. The second bevel gear 403 is arranged opposite to the fifth bevel gear 406.

[0039] The other end of one screw 301 is driven by the second bevel gear 403, and the other end of the other screw 301 is driven by the fourth bevel gear 405. The fourth bevel gear 405 meshes with the third bevel gear 404 for transmission. The first bevel gear 402 and the third bevel gear 404 are driven by a connecting shaft.

[0040] The connecting shaft is rotatably connected inside the bearing housing 407, and the fixed end of the bearing housing 407 is fixed in the groove of the physiotherapy bed 1.

[0041] The crank-connecting rod mechanism 5 includes a disc 501, a connecting rod 502, and a connecting block 503. The two crank-connecting rod mechanisms 5 are arranged symmetrically between the sliding plate 203 and the connecting shaft.

[0042] The connecting block 503 is fixed on the side wall end face of the sliding plate 203, the disc 501 is fixed on the end of the connecting shaft, one end of the connecting rod 502 is hinged to the side wall of the connecting block 503, and the other end of the connecting rod 502 is hinged to the edge of the end face of the disc 501.

[0043] Specifically, the motor drives the crank-connecting rod mechanism 5 to move through the transmission structure, which in turn drives the sliding plate 203 to move back and forth, which in turn drives the high-elasticity plate 201 to move up and down.

[0044] Specifically, the two crank-connecting rod mechanisms 5 are located on both sides of the two screws 301.

[0045] The top of the roller is higher than the top end face of the physiotherapy bed 1.

[0046] A controller 6 is installed on the physiotherapy bed 1, and the controller 6 is electrically connected to the motor 401.

[0047] A rubber pillow pad 8 is fixedly connected to the top of the physiotherapy bed 1.

[0048] The physiotherapy bed 1 is equipped with a protective cover 7, which is located above the drive mechanism 4 and the crank connecting rod mechanism 5 to protect the human body from injury caused by the drive mechanism 4.

[0049] Specifically, the left side of the protective cover 7 is provided with a through hole that is compatible with the crank-connecting rod mechanism 5, so that the protective cover 7 will not affect the movement of the crank-connecting rod mechanism 5, the drive mechanism 4, and the screw 301, and the screw 301 and the crank-connecting rod mechanism 5 can move normally.

[0050] Specifically, the width of the second through groove 206 is greater than the width of the roller 304, so that the roller 304 is embedded in the second through groove 206.

[0051] Specifically, the end of the sliding plate 203 is fixed with two opposing brackets, and a roller 304 is rotatably connected between the two brackets.

[0052] Specifically, the two screws 301 are symmetrically arranged along the vertical center plane of the high elasticity plate 201, and the two through slots 206 are also symmetrically arranged along the vertical center plane of the high elasticity plate 201.

[0053] Specifically, the 304 surface of the roller can be covered with a flexible silicone layer to improve massage comfort and avoid pressure damage to the patient's skin.

[0054] Specifically, the first bevel gear 402, the second bevel gear 403, the third bevel gear 404 and the fourth bevel gear 405 cooperate with each other. Since the two screws 301 rotate in the same direction, the two sliders 303 move synchronously and in the same direction under the drive of the screws 301, ensuring that the rollers 304 on both sides move in the same direction.

[0055] Specifically, controller 6 uses a microprocessor control unit, featuring forward and reverse rotation control, speed adjustment, timing functions, and overload protection. Users can set therapy modes via the control panel or remote control, including parameters such as fluctuation frequency, massage speed, and running time, to meet the personalized needs of patients at different stages of rehabilitation. Controller 6 integrates a safety protection circuit that automatically cuts off power when motor 401 is overloaded or malfunctions, ensuring safe operation.

[0056] Users can rest their heads on the rubber pillow pad 8, which improves the comfort of patients and relieves the discomfort caused by long-term physiotherapy.

[0057] Specifically, the moving speed of the roller 304 is determined by the rotation speed of the motor 401 and the transmission ratio of the bevel gear. The moving stroke can be controlled by setting the forward and reverse rotation switching time of the motor 401 through the controller 6. Users can adjust the rotation speed and forward and reverse rotation cycle of the motor 401 according to their own feelings through the controller 6 to obtain a personalized physiotherapy experience.

[0058] The present invention discloses a method for using a leg and limb rehabilitation physiotherapy device, comprising the following steps: Step 1: The user lies on the physiotherapy bed 1 with legs on the high-elasticity plate 201, head on the rubber pillow 8, and feet on the sliding plate 203. The feet and waist / abdomen are fixed to the physiotherapy bed 1 by straps.

[0059] Step 2: Controller 6 controls motor 401 to start. Motor 401 rotates slowly. The output shaft of motor 401 controls the fifth bevel gear 406 to rotate. The fifth bevel gear 406 drives the first bevel gear 402 to rotate. The first bevel gear 402 drives the connecting shaft to rotate. The connecting shaft drives the crank-connecting rod mechanism 5 to move. The crank-connecting rod mechanism 5 causes the sliding plate 203 to move back and forth slowly. The sliding plate 203 drives the high-elasticity plate 201 to move up and down slightly, helping the user's legs to stretch up and down.

[0060] Step 3: Simultaneously, motor 401 also controls the rotation of the first bevel gear 402 and the third bevel gear 404. The first bevel gear 402 drives the second bevel gear 403 to rotate, the third bevel gear 404 drives the fourth bevel gear 405 to rotate, the rotation of the second bevel gear 403 drives the screw 301 to rotate, the screw 301 drives the second slider 303 to move forward, the rotation of the third bevel gear 404 also drives the screw 301 to rotate, the screw 301 drives the second slider 303 to move forward.

[0061] Step 4: Controller 6 controls motor 401 to reverse, thereby driving slider 2 303 to move in the opposite direction, thus massaging the user's legs without affecting the slight up-and-down movement of the high elastic plate 201.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A leg rehabilitation and limb physiotherapy device, characterized in that: The device includes a physiotherapy bed, an elastic plate undulation mechanism, a roller movement mechanism, a drive mechanism, and a crank-connecting rod mechanism. The physiotherapy bed is connected to the elastic plate undulation mechanism, the roller movement mechanism, the crank-connecting rod mechanism, and the drive mechanism. The drive mechanism drives the movement of the crank-connecting rod mechanism and the roller movement mechanism. The crank-connecting rod mechanism drives the movement of the elastic plate undulation mechanism. The elastic plate undulation mechanism helps the user's two legs to gently undulate and stretch. The roller movement mechanism can massage the user's leg muscles.

2. The leg rehabilitation physiotherapy device according to claim 1, characterized in that: The elastic plate undulation mechanism includes a high elastic plate and a sliding plate. One end of the high elastic plate is fixedly connected to the sliding plate. The physiotherapy bed is provided with a groove, and both the high elastic plate and the sliding plate are located in the groove. Rotating rods are fixedly connected to the two side walls of the other end of the high elastic plate. The rotating rods are rotatably connected to the side walls of the groove of the physiotherapy bed. Slider 1 is fixedly connected to both sides of the sliding plate. A slide rail is provided on the side wall of the groove of the physiotherapy bed. The slide rail is horizontally set, and slider 1 is slidably connected to the slide rail so that the sliding plate is slidably connected to the physiotherapy bed.

3. The leg rehabilitation physiotherapy device according to claim 2, characterized in that: The high-elasticity plate has two through slots II, which are arranged along the extension direction of the slide rail; the sliding plate has two through slots I, which are arranged horizontally and also along the extension direction of the slide rail.

4. The leg rehabilitation physiotherapy device according to claim 3, characterized in that: The roller moving mechanism includes two screws, two guide rods, two sliders, two fixed plates, and two fixed plates. The fixed plates are fixed to the physiotherapy bed. One end of each screw is rotatably connected to the fixed plate, and the other end of each screw passes through the through groove on the slider. One end of each guide rod is fixedly connected to a first fixed plate, and the other end of the guide rod is fixedly connected to a second fixed plate; each screw passes through the second slider and is threadedly connected to the second slider, and each guide rod passes through the second slider to make the second slider move along the guide rod; Each of the two sliders is rotatably connected to a roller at its top, with the two rollers located in the through groove of the high-elasticity plate.

5. A leg rehabilitation physiotherapy device according to claim 4, characterized in that: The drive mechanism includes a motor, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear, and a fifth bevel gear, with the motor fixedly connected in a groove in the physiotherapy bed. The output shaft of the motor is connected to a fifth bevel gear, which meshes with the first bevel gear for transmission. The first bevel gear also meshes with the second bevel gear for transmission. The second bevel gear is positioned opposite to the fifth bevel gear. The other end of one screw is driven by the second bevel gear, the other end of the other screw is driven by the fourth bevel gear, the fourth bevel gear meshes with the third bevel gear, and the first bevel gear and the third bevel gear are driven by a connecting shaft. The connecting shaft is rotatably connected inside the bearing housing, and the fixed end of the bearing housing is fixed in the groove of the physiotherapy bed.

6. The leg rehabilitation physiotherapy device according to claim 5, characterized in that: The crank-connecting rod mechanism includes a disk, a connecting rod, and a connecting block. Two crank-connecting rod mechanisms are arranged symmetrically between the sliding plate and the connecting shaft. The connecting block is fixed to the side wall end face of the sliding plate, the disc is fixed to the end of the connecting shaft, one end of the connecting rod is hinged to the side wall of the connecting block, and the other end of the connecting rod is hinged to the edge of the end face of the disc.

7. The leg rehabilitation physiotherapy device according to claim 6, characterized in that: The top of the roller is higher than the top end face of the physiotherapy bed.

8. A leg rehabilitation physiotherapy device according to claim 7, characterized in that: The physiotherapy bed is equipped with a controller, which is electrically connected to the motor.

9. A leg rehabilitation physiotherapy device according to claim 8, characterized in that: A rubber pillow is fixedly connected to the top of the physiotherapy bed; a protective cover is provided on the physiotherapy bed, which is located above the drive mechanism and the crank-connecting rod mechanism to protect the human body from injury by the drive mechanism.

10. A method of using a leg rehabilitation physiotherapy device as described in any one of claims 1-9, characterized in that: Includes the following steps, Step 1: The user lies on the physiotherapy bed with their legs on the high-elasticity board, their head on the rubber pillow, and their feet on the sliding board. The feet and waist / abdomen are secured to the physiotherapy bed using straps. Step two: The controller starts the motor, which rotates slowly. The output shaft of the motor controls the fifth bevel gear to rotate, which drives the first bevel gear to rotate. The first bevel gear drives the connecting shaft to rotate, which in turn drives the crank-connecting rod mechanism to move. The crank-connecting rod mechanism causes the sliding plate to move back and forth slowly. The sliding plate causes the high-elasticity plate to move up and down slightly, helping the user's legs to stretch up and down. Step 3: At the same time, the motor also controls the rotation of the first bevel gear and the third bevel gear. The first bevel gear drives the second bevel gear to rotate, the third bevel gear drives the fourth bevel gear to rotate, the rotation of the second bevel gear drives a screw to rotate, the screw drives a slider to move forward, and the rotation of the third bevel gear also drives a screw to rotate, the screw drives a slider to move forward. Step 4: The controller controls the motor to reverse, thereby driving the second slider to move in the opposite direction, so as to massage the user's legs, without affecting the slight up-and-down movement of the high elastic plate.

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