Rehabilitation shoes with load sensing and reminding function

Abstract

The application discloses a rehabilitation shoe with a weight perception reminding function, which comprises a shoe sole and a shoe upper, the shoe sole is provided with a first gravity sensor and a second gravity sensor corresponding to the heel and the sole position respectively, the inside of the shoe sole is provided with a controller, and the shoe upper is provided with a display; the controller is configured to: obtain the gravity values detected by the first gravity sensor and the second gravity sensor, add the gravity values to obtain a total weight value, and control the display to display the total weight value. The rehabilitation shoe can directly detect and display the weight value, which is convenient for the patient to control and timely adjust the strength, and promotes the rehabilitation of the fracture site; and when detecting the weight value, the calculation method of adding the heel weight and the sole weight is adopted, so that no matter the heel or the sole is in contact with the ground, the accuracy of the weight detection result can be ensured; in addition, the rehabilitation shoe can also issue an alarm when the weight exceeds the threshold value, and automatically supports and unloads the leg through a fixing sleeve to reduce the weight of the fracture site to below the threshold value.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation medical device technology, specifically to a rehabilitation shoe with a weight-bearing sensing and reminder function. Background Technology

[0002] In the later stages of rehabilitation, fracture patients (such as those with ankle or tibia fractures) need to bear weight and walk. This applies compressive stress to the fracture ends, promoting bone regeneration and facilitating the restoration of normal local blood circulation. It also helps prevent muscle atrophy, joint adhesions, and deep vein thrombosis in the lower extremities. However, there are strict requirements regarding the amount of weight-bearing initially. For example, only a few kilograms of force should be applied initially. Currently, crutches or other walking aids are commonly used to reduce and control the weight-bearing on the affected limb. However, this force is difficult to perceive and control subjectively, often leading to further bone damage due to excessive weight-bearing or poor rehabilitation outcomes due to insufficient weight-bearing. Summary of the Invention

[0003] The purpose of this invention is to provide a rehabilitation shoe with a load-bearing sensing and reminder function, which solves the problem that patients have difficulty subjectively sensing and controlling the amount of load they bear when walking for rehabilitation.

[0004] The present invention achieves the above objectives through the following technical solutions:

[0005] A rehabilitation shoe with a load-bearing sensing and reminder function, the rehabilitation shoe includes a sole and an upper, the sole is provided with a first gravity sensor and a second gravity sensor corresponding to the heel and the ball of the foot respectively, the sole is provided with a controller, and the upper is provided with a display.

[0006] The controller is configured to acquire the gravity values ​​detected by the first gravity sensor and the second gravity sensor, add them together to obtain the total load value, and then control the display to show the total load value.

[0007] A further improvement is that the sole has a button and an alarm on its side. The button is connected to the input of the controller and is used to set the upper limit threshold of the total load value. The alarm is connected to the output of the controller and is used to issue an alarm when the total load value exceeds the upper limit threshold.

[0008] A further improvement is that the rehabilitation shoe also includes two support rods that are movably connected to both sides of the heel position of the sole via a hinge shaft, and a fixing sleeve located at the top of the two support rods. The length of the support rods is adjustable, and the fixing sleeve is used to fit and fix them to the leg.

[0009] A further improvement is that a third gravity sensor is provided at the bottom of the hinge shaft, and a support and stress-relieving component is provided at the top of each support rod. The support and stress-relieving component includes a tube with an open top, an electric telescopic rod provided inside the tube, a spring provided at the output end of the electric telescopic rod, and a sliding rod that slides with the tube and is connected to the spring. The top of the sliding rod is connected to a fixed sleeve.

[0010] The electric telescopic rod is controlled to extend and retract by a controller, which is further configured to: acquire the gravity values ​​detected by the first gravity sensor, the second gravity sensor, and the third gravity sensor, add them together to obtain the total load value, and then control the display to show the total load value. When the total load value exceeds the upper limit threshold, the electric telescopic rod is controlled to extend, causing the spring to be compressed and shorten from its original length. The shortening distance of the spring is determined by the difference between the total load value and the upper limit threshold, so that the elastic support force of the spring on the fixed sleeve is equal to the difference between the total load value and the upper limit threshold.

[0011] A further improvement is that the tube body is provided with a through groove, the output end of the electric telescopic rod is provided with an extension block, the extension block extends out from the through groove, the tube body is provided with a piston cylinder with an open bottom, the piston cylinder is provided with a piston disc, the piston disc forms a sealed chamber above it, and the piston disc is connected to the extension block through a linkage rod, and the inner side of the fixed sleeve is provided with a ring of airbags, the airbags are connected to the sealed chamber through an air pipe;

[0012] When the electric telescopic rod extends and the spring shortens from its original length, the piston disc moves upward through the extension block and the linkage rod, causing the air in the sealed chamber to be compressed into the airbag. The airbag expands and fits tightly against the leg, and the degree of expansion of the airbag is determined by the shortening distance of the spring.

[0013] A further improvement is that the sole is equipped with a rechargeable battery to power the first gravity sensor, the second gravity sensor, the controller, the display, the alarm, and the electric telescopic rod.

[0014] A further improvement is that the fixing sleeve is made of a flexible material and its size is adjustable.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) The rehabilitation shoe can directly detect and display the load value, which makes it easy for patients to control and adjust the force in time, and promote the recovery of the fracture site. In addition, when detecting the load value, the calculation method of adding the load of the heel and the ball of the foot is adopted, so that the accuracy of the load detection result can be guaranteed whether the heel or the ball of the foot is on the ground.

[0017] (2) The rehabilitation shoe can also issue an alarm when the load exceeds the threshold. At the same time, the fixation sleeve automatically supports and relieves the force on the leg (above the fracture site) to reduce the load on the fracture site to below the threshold. In addition, the fixation sleeve is equipped with an air bladder strip, and the expansion and contraction of the air bladder strip is related to the support and relief process. When the fixation sleeve is not supporting and relieving the force, it keeps the fixation sleeve in a relaxed state to reduce the pressure and discomfort on the leg. When supporting and relieving the force, it keeps the fixation sleeve in close contact with the leg to prevent the fixation sleeve from slipping. Moreover, the more the load exceeds the threshold, the greater the support force of the fixation sleeve and the better the fit between the fixation sleeve and the leg. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 A schematic diagram of the cross-sectional structure supporting the stress-relieving component;

[0020] Figure 3 This is a control principle diagram of the present invention;

[0021] In the diagram: 1. Shoe sole; 2. Shoe upper; 3. First gravity sensor; 4. Second gravity sensor; 5. Controller; 6. Display; 7. Button; 8. Alarm; 9. Hinge shaft; 10. Support rod; 11. Fixing sleeve; 12. Support and stress relief component; 121. Tube body; 122. Electric telescopic rod; 123. Spring component; 124. Sliding rod; 125. Through groove; 126. Extension block; 127. Piston cylinder; 128. Piston disc; 129. Linkage rod; 13. Airbag body; 14. Air tube; 15. Rechargeable battery; 16. Third gravity sensor. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Example 1

[0024] Combination Figure 1-3 As shown, a rehabilitation shoe with a load-bearing sensing and reminder function is provided. The rehabilitation shoe includes a sole 1 and an upper 2. The sole 1 is provided with a first gravity sensor 3 and a second gravity sensor 4 corresponding to the heel and the ball of the foot, respectively. Preferably, the positions of the first gravity sensor 3 and the second gravity sensor 4 can be adjusted to suit different sizes of feet. A controller 5 is provided inside the sole 1, and a display 6 is provided on the upper 2.

[0025] The controller 5 is configured to acquire the gravity values ​​detected by the first gravity sensor 3 and the second gravity sensor 4, add them together to obtain the total load value, and then control the display 6 to display this total load value. This allows the patient to accurately grasp the load situation when walking and adjust their force in time. Furthermore, when walking, the patient's soles and heels may alternately touch the ground or touch the ground simultaneously, but the total load value remains constant regardless of the situation. Therefore, the controller 5 adds the gravity values ​​detected by the first gravity sensor 3 and the second gravity sensor 4 as the total load value, which is more realistic and accurate.

[0026] Preferably, in this invention, the sole 1 of the shoe is provided with a button 7 and an alarm 8 on its side. The button 7 is connected to the input terminal of the controller 5 and is used to set the upper limit threshold of the total load value. For example, in the early stage of fracture rehabilitation, the load is allowed to be small. As rehabilitation progresses, the load can be gradually increased. The alarm 8 is connected to the output terminal of the controller 5 and is used to issue an alarm when the total load value exceeds the upper limit threshold. For example, if the upper limit of the load is set to 50N, then when the actual detected load exceeds 50N, an alarm will be issued. This can be in the form of a sound alarm or a light alarm, etc., to remind the patient or medical staff to pay attention.

[0027] Preferably, the rehabilitation shoe of the present invention also includes two support rods 10 movably connected to both sides of the heel position of the sole 1 via a hinge shaft 9, and a fixing sleeve 11 disposed at the top of the two support rods 10. The length of the support rods 10 is adjustable, for example, by adopting a telescopic double-sleeve rod structure with a locking pin, to suit patients with different leg lengths. The fixing sleeve 11 is used to fit and fix the leg, playing a role in auxiliary fixation. The position of the hinge shaft 9 corresponds to the position of the ankle joint, so that when the patient walks, the support rods 10 can swing with the dorsiflexion and plantarflexion movements of the ankle joint, ensuring that the patient can walk freely, and the fixing sleeve 11 is always fixed to the patient's leg.

[0028] Example 2

[0029] Based on the structure of Embodiment 1, the hinge shaft 9 in this invention is provided with a third gravity sensor 16 at its bottom, and each of the support rods 10 is provided with a support and stress-relieving component 12 at its top. The support and stress-relieving component 12 includes a tube 121 with an open top, an electric telescopic rod 122 disposed inside the tube 121, a spring 123 disposed at the output end of the electric telescopic rod 122, and a sliding rod 124 that slides with the tube 121 and is connected to the spring 123. The top of the sliding rod 124 is connected to the fixed sleeve 11. The third gravity sensor 16 is initially subjected to pressure from the hinge shaft 9, support rods 10, and other components, therefore a zeroing operation is required after installation.

[0030] When walking, the length of the support rod 10 is first adjusted so that the fixation sleeve 11 is fixed in a suitable position on the leg that can provide support. For example, for ankle fractures, the fixation sleeve 11 can be placed on the corresponding position below the gastrocnemius muscle; for fibular or tibial fractures, the fixation sleeve 11 can be placed on the corresponding position below the knee joint. In this way, when providing support, the leg and torso gradually thicken from bottom to top, and the fixation sleeve 11 will not slip. The electric telescopic rod 122 is controlled by the controller 5 to extend and retract. In the initial state, the electric telescopic rod 122 is not extended, and the spring 123 is in its original length. At this time, the fixation sleeve 11 does not provide support for the leg, and the weight is completely transferred to the fracture site.

[0031] During the walking process, the controller 5 is further configured to: acquire the gravity values ​​detected by the first gravity sensor 3, the second gravity sensor 4, and the third gravity sensor 16, and add them together to obtain the total load value; then control the display 6 to display the total load value (during normal weighted walking, the gravity value detected by the third gravity sensor 16 is 0, so only the gravity values ​​of the first gravity sensor 3 and the second gravity sensor 4 are added together during normal walking); when the total load value exceeds the upper limit threshold, the alarm 8 is controlled to sound an alarm, and the electric telescopic rod 122 is controlled to extend. Since the bottom of the tube body 121 is supported and limited by the support rod 10, and the top of the sliding rod 124 is limited by the fixed sleeve 11, the spring 123 is compressed and shortened from its original length. The shortening distance of the spring 123 is determined by the difference between the total load value and the upper limit threshold, so that the elastic support force of the spring 123 on the fixed sleeve 11 is equal to the value of the total load value. The difference between the total load value and the upper limit threshold, for example, if the upper limit threshold is 50N and the detected total load value is 60N, the difference is 10N. At this time, the electric telescopic rod 122 is extended and the spring 123 is shortened. The elastic force generated by the shortened spring 123 is 10N. The reverse force of this elastic force will be directly transmitted to the hinge shaft 9 and the sole 1 through the support rod 10, thereby playing an emergency support and stress relief role, so that the load on the fracture site is reduced to 50N. During the support and stress relief process, the third gravity sensor 16 will detect a gravity of 10N. Therefore, the total load value of the first gravity sensor 3, the second gravity sensor 4 and the third gravity sensor 16 remains unchanged at 60N. The alarm and support and stress relief process will continue. When the patient reduces the force under the alarm prompt, after the total load value is reduced to below 50N, the controller 5 controls the spring 123 and the electric telescopic rod 122 to return to the initial state.

[0032] Given a fixed spring coefficient, the elastic force of spring 123 is proportional to its extension and contraction within a reasonable range. Therefore, the elastic force generated can be precisely controlled by controlling the shortening distance.

[0033] When encountering excessive loads or excessive elastic force of the spring 123 during actual testing, the fixing sleeve 11 may slip. To avoid slippage, the fixing sleeve 11 is designed to be smaller and always fits tightly against the leg, which can cause discomfort due to pressure. To solve this problem, in the preferred embodiment of the present invention, the tube body 121 is provided with a through groove 125, the output end of the electric telescopic rod 122 is provided with an extension block 126, the extension block 126 extends from the through groove 125, the tube body 121 is provided with a piston cylinder 127 with an open bottom, the piston cylinder 127 is provided with a piston disc 128, the piston disc 128 forms a sealed chamber above it, and the piston disc 128 is connected to the extension block 126 through a linkage rod 129. The inner side of the fixing sleeve 11 is provided with an air bladder 13, and the air bladder 13 is connected to the sealed chamber through an air pipe 14.

[0034] When the electric telescopic rod 122 is not extended and the spring 123 remains at its original length, it indicates that no support and stress relief process has been performed. At this time, the airbag 13 is in an uninflated state, and the fixing sleeve 11 is only fitted over the leg and will not compress the leg. When the electric telescopic rod 122 extends and the spring 123 shortens from its original length, the piston disc 128 will move upward through the extension block 126 and the linkage rod 129, causing the air in the sealed chamber to be compressed into the airbag 13. The airbag 13 inflates and fits tightly against the leg. The degree of expansion of the airbag 13 is determined by the shortening distance of the spring 123. Thus, the greater the elastic force of the spring 123, the greater the degree of expansion of the airbag 13, making the fixing sleeve 11 fit more tightly. This prevents the fixing sleeve 11 from sliding when the actual test load is too large or the elastic force of the spring 123 is too large. To further improve the anti-slip effect, the airbag 13 can be made with a rough surface that is anti-slip and sweat-proof.

[0035] Preferably, the sole 1 of the present invention is provided with a rechargeable battery 15 for powering the first gravity sensor 3, the second gravity sensor 4, the controller 5, the display 6, the alarm 8 and the electric telescopic rod 122.

[0036] Preferably, the fixing sleeve 11 in this invention is made of a flexible material, such as cloth or nylon, and the size of the fixing sleeve 11 is adjustable to suit the legs of patients of different thicknesses.

[0037] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A rehabilitation shoe with a load-bearing sensing and reminder function, the rehabilitation shoe comprising a sole (1) and an upper (2), characterized in that, The sole (1) is provided with a first gravity sensor (3) and a second gravity sensor (4) corresponding to the heel and the ball of the foot, respectively. The sole (1) is provided with a controller (5), and the upper (2) is provided with a display (6). The controller (5) is configured to: acquire the gravity values ​​detected by the first gravity sensor (3) and the second gravity sensor (4) and add them together to obtain the total load value, and then control the display (6) to display the total load value; The sole (1) is provided with a button (7) and an alarm (8) on its side. The button (7) is connected to the input terminal of the controller (5) and is used to set the upper limit threshold of the total load value. The alarm (8) is connected to the output terminal of the controller (5) and is used to issue an alarm when the total load value exceeds the upper limit threshold. The rehabilitation shoe also includes two support rods (10) that are movably connected to the heel of the sole (1) via a hinge shaft (9), and a fixing sleeve (11) located on the top of the two support rods (10). The length of the support rods (10) is adjustable, and the fixing sleeve (11) is used to fit and fix the shoe to the leg. The bottom of the hinge shaft (9) is provided with a third gravity sensor (16), and the top of the support rod (10) is provided with a support unloading component (12). The support unloading component (12) includes a tube body (121) with an open top, an electric telescopic rod (122) provided in the tube body (121), a spring component (123) provided at the output end of the electric telescopic rod (122), and a sliding rod (124) that slides with the tube body (121) and is connected to the spring component (123). The top of the sliding rod (124) is connected to the fixed sleeve (11). The electric telescopic rod (122) is controlled to extend and retract by the controller (5), and the controller (5) is further configured to: acquire the gravity values ​​detected by the first gravity sensor (3), the second gravity sensor (4) and the third gravity sensor (16) and add them together to obtain the total load value, and then control the display (6) to display the total load value. When the total load value exceeds the upper limit threshold, the electric telescopic rod (122) is controlled to extend, so that the spring (123) is compressed and shortened from its original length. The shortening distance of the spring (123) is determined by the difference between the total load value and the upper limit threshold, so that the elastic support force of the spring (123) on the fixed sleeve (11) is equal to the difference between the total load value and the upper limit threshold. The tube body (121) is provided with a through groove (125), and the output end of the electric telescopic rod (122) is provided with an extension block (126). The extension block (126) extends out from the through groove (125). The tube body (121) is provided with a piston cylinder (127) with an open bottom. The piston cylinder (127) is provided with a piston disc (128) inside. The piston disc (128) forms a sealed chamber above it, and the piston disc (128) is connected to the extension block (126) through a linkage rod (129). The inner side of the fixed sleeve (11) is provided with a ring of airbag (13). The airbag (13) is connected to the sealed chamber through an air pipe (14). When the electric telescopic rod (122) extends and the spring (123) shortens from its original length, the piston disc (128) moves upward through the extension block (126) and the linkage rod (129), so that the air in the sealed chamber is compressed into the airbag (13), the airbag (13) expands and fits tightly against the leg, and the degree of expansion of the airbag (13) is determined by the shortening distance of the spring (123).

2. The rehabilitation shoe with load-bearing sensing and reminder function according to claim 1, characterized in that, The sole (1) is equipped with a rechargeable battery (15) for powering the first gravity sensor (3), the second gravity sensor (4), the controller (5), the display (6), the alarm (8), and the electric telescopic rod (122).

3. A rehabilitation shoe with a load-bearing sensing and reminder function according to claim 1, characterized in that, The fixing sleeve (11) is made of flexible material and the size of the fixing sleeve (11) is adjustable.

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