An intelligent assisted weight-bearing rehabilitation device for lower limb fractures

Abstract

The present invention relates to the technical field of medical devices, and discloses an intelligent auxiliary weight-bearing rehabilitation device for lower limb fractures, which includes a bottom plate, a support rod, a leg fixing plate, a connecting rod, a first strap, a second strap, a foot pedal, a vertical rod, a horizontal rod, a chute, a stop block, a cylinder, a telescopic rod, a support plate, a single-chip microcomputer, a pressure sensor, an infrared transmitting device and an infrared receiving device. In the present invention, the pressure sensor can detect the pressure exerted when the foot steps on the foot pedal. The pressure threshold can be set through the single-chip microcomputer. When the pressure value detected by the pressure sensor reaches the pressure threshold, the single-chip microcomputer controls the telescopic rod of the cylinder to drive the support plate to retract, the foot pedal drops, and the foot is no longer stressed. By setting a spring, there can be a "force unloading" process for the foot pedal, and when the user lifts the foot, the spring can bounce the foot pedal back. When the infrared receiving device senses the ray emitted by the infrared transmitting device, the telescopic rod bounces back to support the foot pedal again, thereby assisting the patient to perform rehabilitation training with adjustable weight-bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, it relates to an intelligent assisted weight-bearing rehabilitation device for lower limb fractures. Background Art

[0002] Fractures are common and frequently-occurring diseases in orthopedics. Once a fracture occurs, it will lead to the loss of labor ability of patients to varying degrees, and in severe cases, it may even cause death or disability. The ultimate goal of treating fractures is to maximize the restoration of the function of the injured limb. Therefore, in fracture surgical treatment, its reduction and fixation are very important. Research shows that during the fracture recovery process, the pressure perpendicular to the fracture line is beneficial to fracture healing, while the shear force parallel to the fracture line is likely to cause displacement of the fracture ends, which may in turn lead to delayed healing or even nonunion.

[0003] For lower limb fractures, patients need to gradually bear weight for rehabilitation after surgery. However, in the past, during the rehabilitation process, there was a lack of continuous and effective rehabilitation guidance. Some patients bear too much weight when getting out of bed, which may cause secondary fractures. For many elderly patients, especially those with osteoporotic fractures, they have great psychological pressure and are afraid to bear weight during rehabilitation, which may lead to delayed healing. The method of stepping on an electronic scale with the affected limb can relatively accurately control the weight of the load, but patients cannot continuously and precisely adjust the change of the load weight during rehabilitation according to their own conditions. In addition, some patients may even cause secondary damage due to excessive force control.

[0004] Therefore, there is an urgent need to design an intelligent assisted weight-bearing rehabilitation device for lower limb fractures, which allows patients to use this device while standing, realizes controllable weight-bearing, and solves the problem of the repair and reconstruction of the fracture ends of lower limb fracture patients. Summary of the Invention

[0005] In order to overcome the above-mentioned defects existing in the prior art, the present invention provides an intelligent assisted weight-bearing rehabilitation device for lower limb fractures. When using this device, patients can carry out rehabilitation exercises while standing with crutches, and the pressure borne can be adjusted. Different pressure thresholds can be set for different stages during the fracture healing period, so as to achieve the effect of rehabilitation exercises.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: an intelligent auxiliary weight-bearing rehabilitation device for lower limb fractures, comprising a base plate, two support rods are provided on the top of the base plate, a leg fixing plate is provided at the top between the two support rods, connecting rods are provided on both sides of the leg fixing plate and the two support rods, the cross section of the leg fixing plate is adapted to the arc shape of the legs, straps 1 and 2 are provided on both sides of the leg fixing plate, straps 1 and 2 are connected by buttons; a foot pedal is provided at the bottom end between the two support rods, vertical rods are provided on the tops of the two sides of the foot pedal close to the two support rods, and cross rods are provided on the sides of the two vertical rods facing the corresponding side support rods, the cross section of the cross rod is square, and the two support rods The rods are provided with a slide groove that passes through the thickness direction of the support rod and is vertically arranged. The slide groove can allow the cross bar on the corresponding side to pass through. A block is provided at one end of the cross bar passing through the slide groove, and the cross bar can slide in the slide groove; a cylinder is provided at the bottom of the two support rods, and the cylinder is arranged on the side of the support rod away from the foot pedal. The cylinder is provided with a telescopic rod passing through the support rod, and a support plate for the foot pedal is provided at the end of the telescopic rod away from the cylinder; a single-chip microcomputer is provided on the top of the base plate, and the single-chip microcomputer is electrically connected to the cylinder. A pressure sensor is provided on the top of the foot pedal, and the pressure sensor is electrically connected to the single-chip microcomputer; an infrared transmitter is provided on the side of the support rod facing the foot pedal, and an infrared receiver is provided on the side of the foot pedal facing the support rod, and the infrared receiver is electrically connected to the single-chip microcomputer.

[0007] By adopting the above technical solution, a pressure threshold can be set in the single-chip microcomputer. When the pressure value detected by the pressure sensor reaches the pressure threshold, the single-chip microcomputer controls the cylinder telescopic rod to retract. When the infrared detection device detects the rays emitted by the infrared transmitting device, the single-chip microcomputer controls the cylinder to extend, thereby realizing the automation of load-bearing adjustment.

[0008] Furthermore, a support block is provided at the bottom of the base plate, and buffer plates are provided at the bottom ends of both sides in the width direction of the support block. The buffer plates are hinged to the support blocks, and a spring is provided between the buffer plates and the base plate.

[0009] By adopting the above technical solution, it is easier to walk when using the device, and the flexibility of walking while wearing the device is increased.

[0010] Furthermore, the width of the bottom of the leg fixing plate is smaller than the width of the top of the leg fixing plate, and the concave surface of the leg fixing plate is covered with a rubber pad.

[0011] By adopting the above technical solution, the width of the bottom of the leg fixing plate is smaller than the width of the top of the leg fixing plate. The leg fixing plate will not slide on the legs during use. The rubber pad can increase friction, thereby improving the stability and comfort of the leg fixing plate.

[0012] Furthermore, the top end of the support rod is bent.

[0013] By adopting the above technical solution, the top end of the support rod is set to adapt to the bending at the knee joint of the leg, which can improve the comfort of the device during use.

[0014] Furthermore, a second spring is provided between the foot pedal and the bottom plate.

[0015] By adopting the above technical solution, when the user wears the device and lifts the foot, it can assist the foot pedal to bounce back.

[0016] Furthermore, a control panel electrically connected to the single-chip microcomputer is provided at the top end of the support rod.

[0017] By adopting the above technical solution, the pressure threshold can be set through the control panel. When the pressure value detected by the pressure sensor reaches the pressure threshold, the telescopic rod of the cylinder is controlled to contract, which is convenient for use.

[0018] In summary, the present invention has the following beneficial effects: In the present invention, the pressure sensor can detect the pressure exerted when the foot steps on the foot pedal. The pressure threshold can be set through the single-chip microcomputer. When the pressure value detected by the pressure sensor reaches the pressure threshold, the single-chip microcomputer controls the telescopic rod of the cylinder to drive the support plate to retract, the foot pedal drops, and the foot is no longer stressed. By setting the spring, a "force relief" process can be carried out on the foot pedal, and the spring can bounce the foot pedal back when the user lifts the foot. When the infrared receiving device senses the ray emitted by the infrared transmitting device, the telescopic rod bounces back to support the foot pedal again, thereby assisting the patient to perform rehabilitation exercises with adjustable load bearing. Description of the Drawings

[0019] Figure 1 is the front view in the embodiment of the present invention;

[0020] Figure 2 is the embodiment of the invention Figure 1 the structure diagram at position A therein;

[0021] Figure 3 is the right view in the embodiment of the present invention;

[0022] Figure 4 is the embodiment of the present invention Figure 2 the cross-sectional view at position B therein;

[0023] In the figure: 1, bottom plate; 2, support rod; 3, leg fixing plate; 4, connecting rod; 5, first strap; 6, second strap; 7, foot pedal; 8, vertical rod; 9, horizontal rod; 10, chute; 11, stop block; 12, cylinder; 13, telescopic rod; 14, support plate; 15, single-chip microcomputer; 16, pressure sensor; 17, infrared transmitting device; 18, infrared receiving device; 19, support block; 20, buffer plate; 21, first spring; 22, rubber pad; 23, second spring; 24, control panel. Detailed Embodiments

[0024] The following will further describe the present invention in detail with reference to the accompanying Figures 1-4 drawings.

[0025] Embodiment: As Figures 1 to 4 shown, an intelligent assisted weight-bearing rehabilitation device for lower limb fractures includes a bottom plate 1. A support block 19 is fixedly connected to the bottom of the bottom plate 1. Buffer plates 20 are hinged to the bottom ends on both sides in the width direction of the support block 19. A first spring 21 is installed between the buffer plate 20 and the bottom plate 1. Two vertically arranged support rods 2 are fixedly connected to the top of the bottom plate 1, and the top ends of the support rods 2 are bent; A leg fixing plate 3 is installed at the top between the two support rods 2. The width of the bottom of the leg fixing plate 3 is smaller than the width of the top of the leg fixing plate 3. The concave surface of the leg fixing plate 3 is covered with a rubber pad 22. Link rods 4 are connected between both sides of the leg fixing plate 3 and the two support rods 2. The cross-section of the leg fixing plate 3 is an arc adapted to the leg. A first strap 5 and a second strap 6 are respectively connected to both sides of the leg fixing plate 3. The first strap 5 and the second strap 6 are connected by buttons;

[0026] A foot pedal 7 is installed at the bottom between the two support rods 2. A second spring 23 is installed between the foot pedal 7 and the bottom plate 1. Vertical rods 8 are fixedly connected to the tops of both sides of the foot pedal 7 close to the two support rods 2. Cross rods 9 are fixedly connected to the surfaces of the two vertical rods 8 facing the corresponding side support rods 2. The cross-section of the cross rod 9 is square. The two support rods 2 are each provided with a vertically arranged sliding groove 10 passing through the thickness direction of the support rod 2. The sliding groove 10 allows the corresponding side cross rod 9 to pass through. A stop block 11 is fixedly connected to the end of the cross rod 9 passing through the sliding groove 10. The cross rod 9 can slide in the sliding groove 10; Cylinders 12 are installed at the bottoms of the two support rods 2. The cylinders 12 are arranged on the side of the support rods 2 away from the foot pedal 7. The cylinders 12 are connected with telescopic rods 13 passing through the support rods 2. The end of the telescopic rod 13 away from the cylinder 12 is fixedly connected to a support plate 14 for placing the foot pedal 7. The top surface of the support plate 14 and the bottom surface of the foot pedal 7 are both smooth, and the sliding friction between them is small;

[0027] A single-chip microcomputer 15 is installed on the top of the bottom plate 1. The single-chip microcomputer 15 is electrically connected to the cylinders 12. A pressure sensor 16 is installed on the top of the foot pedal 7. The pressure sensor 16 is electrically connected to the single-chip microcomputer 15; An infrared transmitting device 17 is installed on the surface of the support rod 2 facing the foot pedal 7. The infrared transmitting device 17 is arranged above the telescopic rod 13. An infrared receiving device 18 is installed on the surface of the foot pedal 7 facing the support rod 2. The infrared receiving device 18 is electrically connected to the single-chip microcomputer 15. A control panel 24 electrically connected to the single-chip microcomputer 15 is installed at the top end of the support rod 2.

[0028] Working principle: Before use, first place the patient's injured foot on the footrest 7, and then use the first strap 5 and the second strap 6 to fix the leg fixing plate 3 above the patient's knee joint. Then, set the pressure threshold through the control panel 24. Since the load-bearing capacity of the fracture site of a fracture patient gradually increases during the recovery stage depending on the length of time, the set pressure threshold can also be gradually increased according to the length of the patient's recovery stage to carry out scientific and effective rehabilitation exercises.

[0029] During use, when the patient steps down with force, the pressure sensor 16 detects the applied pressure. When the detected pressure reaches the set pressure threshold, the single-chip microcomputer 15 controls the telescopic rod 13 of the cylinder 12 to drive the support plate 14 to retract, and the footrest 7 drops, so that when the patient steps down with a certain force, they "step on air". At this time, the force supporting the human body is borne by the leg fixing plate 3, so as to ensure that the pressure on the patient's fracture does not exceed the set pressure threshold. When the patient moves the foot wearing this device, the second spring 23 can assist the footrest 7 to bounce back to its original position, so that the infrared receiving device 18 receives the ray emitted by the infrared transmitting device 17. When the infrared receiving device receives the ray, the signal is transmitted to the single-chip microcomputer 15, and the single-chip microcomputer 15 can control the telescopic rod 13 of the cylinder 12 to extend, driving the support plate 14 back to its original position to support the footrest 7 again.

[0030] It is worth mentioning that when the footrest 7 is placed on the support plate 14 and the leg fixing plate 3 is fixed to the patient's leg, the patient's knee joint is slightly bent; when the support plate 14 retracts and the patient's foot is straightened, the footrest 7 will not touch the bottom plate 1, and the cross bar 9 will not touch the bottom end of the sliding groove 10. Without considering the second spring 23, the patient's foot is in a "suspended" state at this time; and the elastic force of the second spring 23 is small, and when the patient's leg is straightened, the elastic force given by the second spring 23 to the support plate 14 will not exceed the set pressure threshold.

[0031] This specific embodiment is only an explanation of the present invention and does not limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. An intelligent auxiliary weight-bearing rehabilitation device for lower limb fractures, characterized in that, The invention comprises a bottom plate (1), wherein two supporting rods (2) are provided on the top of the bottom plate (1), the top ends of the two supporting rods (2) are bent, a leg fixing plate (3) is provided on the top end between the two supporting rods (2), connecting rods (4) are provided on both sides of the leg fixing plate (3) and between the two supporting rods (2), the cross section of the leg fixing plate (3) is an arc shape adapted to the legs, and a first strap (5) and a second strap (6) are provided on both sides of the leg fixing plate (3), and a button is provided between the first strap (5) and the second strap (6). Buckle connection; a foot pedal (7) is provided at the bottom end between the two support rods (2), a spring (23) is provided between the foot pedal (7) and the bottom plate (1), a vertical rod (8) is provided at the top of the foot pedal (7) near the two sides of the two support rods (2), and a cross rod (9) is provided on the side of the two vertical rods (8) facing the corresponding side support rod (2), and the cross section of the cross rod (9) is square, and the two support rods (2) are provided with a slide groove (10) that passes through the thickness direction of the support rod (2) and is vertically arranged, and the slide groove (10) is provided. 0) can allow the crossbar (9) on the corresponding side to pass through, and the end of the crossbar (9) passing through the slide groove (10) is provided with a stopper (11), and the crossbar (9) can slide in the slide groove (10); the bottom of the two support rods (2) is provided with a cylinder (12), and the cylinder (12) is provided on the side of the support rod (2) away from the foot pedal (7), and the cylinder (12) is provided with a telescopic rod (13) passing through the support rod (2), and the end of the telescopic rod (13) away from the cylinder (12) is provided with a support plate (14) for placing the foot pedal (7) ); a single-chip microcomputer (15) is provided on the top of the base plate (1), and the single-chip microcomputer (15) is electrically connected to the cylinder (12); a pressure sensor (16) is provided on the top of the foot pedal (7), and the pressure sensor (16) is electrically connected to the single-chip microcomputer (15); an infrared emitting device (17) is provided on the side of the support rod (2) facing the foot pedal (7), and an infrared receiving device (18) is provided on the side of the foot pedal (7) facing the support rod (2), and the infrared receiving device (18) is electrically connected to the single-chip microcomputer (15).

2. The intelligent auxiliary weight-bearing rehabilitation device for lower limb fractures according to claim 1, wherein, A support block (19) is provided at the bottom of the base plate (1), and buffer plates (20) are provided at the bottom ends of both sides of the width direction of the support block (19). The buffer plates (20) are hinged to the support block (19), and a spring (21) is provided between the buffer plates (20) and the base plate (1).

3. An intelligent assisted weight-bearing rehabilitation device for lower limb fractures according to claim 1, characterized in that, The width of the bottom of the leg fixing plate (3) is smaller than the width of the top of the leg fixing plate (3), and the concave surface of the leg fixing plate (3) is covered with a rubber pad (22).

4. An intelligent assisted weight-bearing rehabilitation device for lower limb fractures according to claim 1, characterized in that, A control panel (24) electrically connected to the single chip computer (15) is provided at the top end of the support rod (2).

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