Electromagnetic resistance knee joint training brace

Abstract

The invention provides an electromagnetic resistance knee joint training brace which comprises a fixed disc and a rotating disc, the rotating disc is rotatably connected with the fixed disc, the upper end of the fixed disc is connected with a thigh fixing plate, the other end of the thigh fixing plate is provided with a first bandage, and the lower end of the rotating disc is provided with a shank fixing plate. A second bandage is arranged at the other end of the shank fixing plate, a motor driving module and a control module are arranged on the surface of the fixing disc, and an angle sensor is arranged on the surface of the rotating disc. The rehabilitation training device comprises multiple training modes, fine adjustment of resistance is achieved through electromagnetic damping, and the rehabilitation training device adapts to different rehabilitation stages, assists a patient in rehabilitation training, automatically protects knee joints and prevents knee joint injuries caused by improper flexion and extension force.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation training devices, in particular to an electromagnetic resistance knee joint training brace. Background Art

[0002] To avoid the heavy, airtight cast required by patients undergoing knee surgery, knee braces have been designed specifically for these patients. These braces provide: 1) support and protection to prevent secondary injury; 2) immobilize the knee during the acute phase; and 3) limit knee angles to a safe range during rehabilitation. Existing knee braces only provide a fixed position, lacking the ability to adjust resistance or set training modes. Their limited intelligence significantly impacts rehabilitation outcomes. Summary of the Invention

[0003] In order to solve the technical problems of single function and poor rehabilitation effect of knee joint braces in the prior art, the electromagnetic resistance knee joint training brace proposed in the present invention includes a fixed plate and a rotating plate, the rotating plate is rotatably connected to the fixed plate, the upper end of the fixed plate is connected to the thigh fixing plate, the other end of the thigh fixing plate is provided with a first strap, the lower end of the rotating plate is provided with a calf fixing plate, the other end of the calf fixing plate is provided with a second strap, the surface of the fixed plate is provided with a motor drive module and a control module, and the surface of the rotating plate is provided with an angle sensor.

[0004] Preferably, the interior of the fixed disk includes a resistance adjustment module and a rotation module, the resistance adjustment module and the rotation module are spaced apart from each other and connected via a first transmission shaft, and the rotation module is connected to the rotating disk via a second transmission shaft.

[0005] Preferably, the resistance adjustment module 11 includes a first rotating track, a permanent magnet ring is arranged inside the first rotating track, three groups of electromagnetic coils are evenly arranged on the outside of the first rotating track, a circle of first transmission teeth is arranged on the outward side of the permanent magnet ring, and the first rotating track is provided with an opening at the top, and the first drive gear engages with the first transmission teeth through the opening.

[0006] Preferably, the first rotating track is made of wave-transparent material.

[0007] Preferably, the working process of the resistance adjustment module is that the first driving gear drives the permanent magnet ring to rotate, current is passed into the electromagnetic coil to generate magnetic lines of flux, and the direction of the current is controlled so that during the rotation, the magnetic lines of flux of the permanent magnet ring collide with the magnetic lines of flux of the electromagnetic coil to generate damping force, and the magnitude of the damping force is adjusted by controlling the magnitude of the current in the electromagnetic coil and the number of electromagnetic coils enabled.

[0008] Preferably, the rotation module includes a second rotating track, a transmission ring is arranged inside the second rotating track, a circle of second transmission teeth is arranged on the outward side of the transmission ring, an opening is arranged at the top of the second rotating track, the second drive gear is engaged with the second transmission teeth through the opening, and the second drive gear is connected to the first drive gear through the first transmission shaft.

[0009] Preferably, a rotation groove is provided on the inner wall of the second rotating track, and the second transmission shaft is connected to the transmission ring via a connecting rod, and the connecting rod passes through the rotation groove and is connected to the transmission ring.

[0010] Preferably, the control module includes a touch screen, a processor and a communication unit. The touch screen receives the training mode set by the user. The processor controls the working process of the electromagnetic resistance knee training brace according to the training mode, control instructions and data from the angle sensor. The communication unit communicates with the APP of the smart terminal. The training mode includes a passive mode and an active mode.

[0011] Preferably, in the passive mode, the transmission rod is arranged between the motor drive module and the calf fixing plate, and the processor controls the motor drive module to rotate slowly according to the data of the angle sensor, thereby driving the knee joint to move slowly.

[0012] Preferably, in the active mode, there is no need to set a transmission rod. Medical staff transmit the rehabilitation training parameters to the processor through the APP of the smart terminal. The processor controls the current in the electromagnetic coil and the number of electromagnetic coils enabled according to the rehabilitation training parameters and the data of the angle sensor, and reasonably adjusts the resistance size to increase the resistance when the knee is bent and reduce the resistance when the knee is straightened.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] It includes multiple training modes, and uses electromagnetic damping to achieve fine-tuning of resistance to adapt to different rehabilitation stages, assist patients in rehabilitation training, and automatically protect the knee joint to prevent knee injury caused by improper flexion and extension. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 2. It is a schematic structural diagram of the electromagnetic resistance knee joint training brace of the present invention;

[0016] Figure 2 Schematic diagram of the arrangement of the motor drive module and the control module of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the fixed disk of the present invention;

[0018] Figure 4 It is a structural diagram of the resistance adjustment module of the present invention;

[0019] Figure 5 It is a structural schematic diagram of the rotation module of the present invention.

[0020] In the accompanying drawings: 1. Fixed disk, 11. Resistance adjustment module, 111. First rotating track, 112. Permanent magnet ring, 113. Electromagnetic coil, 114. First driving gear, 12. Rotating module, 121. Second rotating track, 122. Transmission ring, 123. Second driving gear, 124. Rotating slot, 13. First transmission shaft, 2. Rotating disk, 21. Second transmission shaft, 22. Connecting rod, 3. Motor drive module, 4. Control module, 5. Angle sensor, 6. Thigh fixing plate, 7. First strap, 8. Calf fixing plate, 9. Second strap, 10. Transmission rod. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] like Figure 1 As shown, the electromagnetic resistance knee joint training brace proposed by the present invention includes a fixed plate 1 and a rotating plate 2. The rotating plate 2 is rotatably connected to the fixed plate 1. The upper end of the fixed plate 1 is connected to the thigh fixing plate 6. The other end of the thigh fixing plate 6 is provided with a first strap 7. The lower end of the rotating plate 2 is provided with a calf fixing plate 8. The other end of the calf fixing plate 8 is provided with a second strap 9. The first strap 7 and the second strap 9 are light and breathable, suitable for long-term wear. Figure 2 As shown, the surface of the fixed disk 1 is provided with a motor drive module 3 and a control module 4. The two ends of the transmission rod 10 are respectively connected to the motor drive module 3 and the calf fixing plate 8 by snap fastening. The motor drive module 3 is a disc structure and is arranged in the center of the fixed disk 1. It can rotate under the drive of the motor. When the transmission rod 10 is set, the calf fixing plate 8 can be driven to rotate. The control module 4 is arranged on the upper part of the fixed disk 1.

[0023] like Figure 3 As shown, the interior of the fixed disk 1 includes a resistance adjustment module 11 and a rotation module 12. The resistance adjustment module 11 and the rotation module 12 are spaced apart from each other and connected by a first transmission shaft 13. The rotation module 12 is connected to the rotating disk 2 through a second transmission shaft 21 and can rotate under the drive of the rotating disk 2.

[0024] like Figure 4As shown, the resistance adjustment module 11 includes a first rotating track 111, which is made of a wave-transmitting material. A permanent magnet ring 112 is provided inside the first rotating track 111. The permanent magnet ring 112 can rotate along the first rotating track 111. Three groups of electromagnetic coils 113 are evenly arranged on the outside of the first rotating track 111. A circle of first transmission teeth (not shown in the figure) is provided on the outward side of the permanent magnet ring 112. The first rotating track 111 is provided with an opening at the top, and the first drive gear 114 is engaged with the first transmission teeth through the opening. The working process of the resistance adjustment module 11 is that the first drive gear 114 drives the permanent magnet ring 112 to rotate, and the electromagnetic coil 113 is fed with current to generate magnetic flux lines. The direction of the current is controlled so that during the rotation process, the magnetic flux lines of the permanent magnet ring 112 collide with the magnetic flux lines of the electromagnetic coil 113 to generate a damping force. The magnitude of the damping force can be adjusted by controlling the magnitude of the current in the electromagnetic coil and the number of electromagnetic coils enabled.

[0025] like Figure 5 As shown, the rotation module 12 includes a second rotation track 121, and a transmission ring 122 is provided inside the second rotation track 121. The transmission ring 122 can rotate along the second rotation track 121. A circle of second transmission teeth (not shown in the figure) is provided on the outward side of the transmission ring 122. The second rotation track 121 is provided with an opening at the top, and the second drive gear 123 engages with the second transmission teeth through the opening. The second drive gear 123 is connected to the first drive gear 114 through the first transmission shaft 13. The inner wall of the second rotation track 121 is provided with a rotation groove 124. The second transmission shaft 21 is connected to the transmission ring 122 through a connecting rod 22. The connecting rod 22 passes through the rotation groove 124 to connect to the transmission ring 122.

[0026] An angle sensor 5 is provided on the surface of the rotating disk 2 . The rotation axis of the angle sensor 5 is connected to the center of the rotating disk 2 and rotates along with the rotating disk 2 .

[0027] Control module 4 includes a touchscreen display, a processor, and a communication unit. The touchscreen display is used to display training data and receive user-set training modes. The processor controls the operation of the electromagnetic resistance knee training brace based on the training mode, control instructions, and data from the angle sensor. The communication unit communicates with the smart terminal app to receive control instructions and transmit training information. Training modes include passive and active modes. The passive mode is suitable for the early postoperative period. The transmission rod is placed between the motor drive module and the calf fixation plate. The processor controls the motor drive module to rotate slowly based on the angle sensor data, driving the knee joint to move slowly and prevent stiffness. No current is passed through the electromagnetic coils in the resistance adjustment module. The active mode is suitable for the recovery period. During this period, the patient can actively exercise without the need for a machine to drive or a transmission rod. Medical staff transmit rehabilitation training parameters to the processor via the smart terminal app. The processor controls the current in the electromagnetic coils and the number of electromagnetic coils activated based on the rehabilitation training parameters and the angle sensor data. It adjusts the resistance level appropriately, increasing the resistance when the knee is bent and reducing the resistance when the knee is straightened, simulating the needs of rehabilitation training and avoiding excessive force.

[0028] The above disclosure is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. It should be noted that for those skilled in the art, any equivalent changes made to the present invention without departing from the design structure and principles of the present invention are considered to be within the scope of protection of the present invention.

Claims

1. An electromagnetic resistance knee joint training brace, characterized in that: The electromagnetic resistance knee joint training brace includes a fixed plate and a rotating plate, the rotating plate is rotatably connected to the fixed plate, the upper end of the fixed plate is connected to the thigh fixing plate, the other end of the thigh fixing plate is provided with a first strap, the lower end of the rotating plate is provided with a calf fixing plate, the other end of the calf fixing plate is provided with a second strap, the surface of the fixed plate is provided with a motor drive module and a control module, and the surface of the rotating plate is provided with an angle sensor.

2. The electromagnetic resistance knee joint training brace according to claim 1, characterized in that: The fixed disk includes a resistance adjustment module and a rotation module. The resistance adjustment module and the rotation module are spaced apart from each other and connected via a first transmission shaft. The rotation module is connected to the rotating disk via a second transmission shaft.

3. The electromagnetic resistance knee joint training brace according to claim 2, characterized in that: The resistance adjustment module 11 includes a first rotating track, a permanent magnet ring is arranged inside the first rotating track, three groups of electromagnetic coils are evenly arranged on the outside of the first rotating track, a circle of first transmission teeth is arranged on the outward side of the permanent magnet ring, and an opening is arranged at the top of the first rotating track, and the first drive gear engages with the first transmission teeth through the opening.

4. The electromagnetic resistance knee joint training brace according to claim 3, characterized in that: The first rotating track is made of wave-transmitting material.

5. The electromagnetic resistance knee joint training brace according to claim 3, characterized in that: The working process of the resistance adjustment module is that the first driving gear drives the permanent magnet ring to rotate, and current is passed into the electromagnetic coil to generate magnetic lines of flux. The direction of the current is controlled so that during the rotation process, the magnetic lines of flux of the permanent magnet ring collide with the magnetic lines of flux of the electromagnetic coil to generate damping force. The magnitude of the damping force is adjusted by controlling the magnitude of the current in the electromagnetic coil and the number of electromagnetic coils enabled.

6. The electromagnetic resistance knee joint training brace according to claim 3, characterized in that: The rotation module includes a second rotating track, a transmission ring is arranged inside the second rotating track, a circle of second transmission teeth is arranged on the outward side of the transmission ring, an opening is arranged at the top of the second rotating track, and the second drive gear is engaged with the second transmission teeth through the opening, and the second drive gear is connected to the first drive gear through the first transmission shaft.

7. The electromagnetic resistance knee joint training brace according to claim 6, characterized in that: A rotation groove is provided on the inner wall of the second rotating track, and the second transmission shaft is connected to the transmission ring via a connecting rod, and the connecting rod passes through the rotation groove and is connected to the transmission ring.

8. The electromagnetic resistance knee joint training brace according to claim 6, characterized in that: The control module includes a touch screen, a processor and a communication unit. The touch screen receives the training mode set by the user. The processor controls the working process of the electromagnetic resistance knee joint training brace according to the training mode, control instructions and data from the angle sensor. The communication unit communicates with the APP of the smart terminal. The training mode includes passive mode and active mode.

9. The electromagnetic resistance knee joint training brace according to claim 8, characterized in that: In passive mode, the transmission rod is set between the motor drive module and the calf fixation plate. The processor controls the motor drive module to rotate slowly according to the data of the angle sensor, driving the knee joint to move slowly.

10. The electromagnetic resistance knee joint training brace according to claim 8, characterized in that: In active mode, there is no need to set a transmission rod. Medical staff transmit the rehabilitation training parameters to the processor through the APP of the smart terminal. The processor controls the current in the electromagnetic coil and the number of electromagnetic coils enabled according to the rehabilitation training parameters and the data of the angle sensor, and reasonably adjusts the resistance size to increase the resistance when the knee is bent and reduce the resistance when the knee is straightened.

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