Passive-active combined hallux valgus correction instrument

Abstract

The application discloses a kind of active and passive combined hallux valgus correction instrument, comprising: shell, two groups of mode conversion structure and controller, at least one recess is provided on the top surface of shell, each recess is used to put the bottom of a foot;Each recess is correspondingly provided with a group of mode conversion structure, each group of mode conversion structure includes: active mode mechanism, passive mode mechanism and ultrasonic distance sensor, the active mode mechanism of the active and passive combined hallux valgus correction instrument of the application is used to actively force the correction of user using foot thumb, passive mode mechanism can exert correction force to the foot thumb of user in combination with active mode mechanism, and the foot thumb is passively corrected by traction. The training effect evaluation of rehabilitation training process is carried out by ultrasonic distance sensor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hallux valgus correction, in particular to a hallux valgus correction instrument combining active and passive correction. BACKGROUND

[0002] Hallux valgus refers to the lateral deviation of the hallux at the first metatarsophalangeal joint, and the hallux valgus has a long development process from mild to severe, which is often ignored in the early stage. Hallux valgus can cause foot arch collapse leading to flat feet, and the foot reaction force is transmitted to the knees, hips, waist and other parts of the body, which is easy to cause knee buckling and pain of the joints such as knees, hips and waist, and other complications, and the impact on the skeleton is irreversible. The early and middle stages of hallux valgus can alleviate the development process through the hallux valgus correction instrument to achieve therapeutic effect and prevent the occurrence of complications. CN104758102A discloses a hallux valgus correction instrument, which comprises a shell, a thumb strap is arranged on the shell, the thumb strap is threaded out of an opening arranged on the shell, a sliding block connected with the thumb strap is arranged below the opening, the sliding block is used to drive the thumb strap to move within the opening range, a dynamic sliding block is connected to the lower part of the sliding block, the dynamic sliding block is arranged on a sliding rod, a connecting plate is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a rudder plate, and the rudder plate is driven by a rudder.

[0003] However, the above-mentioned corrector can only provide passive correction function, cannot provide active correction function, cannot correct the different degrees of hallux valgus of left and right feet respectively, and cannot evaluate the rehabilitation state and correction effect of the patient. SUMMARY

[0004] In order to solve the problems mentioned in the background art, the present application provides a hallux valgus correction instrument combining active and passive correction for different degrees of hallux valgus of left and right feet.

[0005] The present application is realized by the following technical solutions.

[0006] A hallux valgus correction instrument combining active and passive correction, comprising: a shell, two groups of mode conversion structures and a controller, the shell is a cavity, at least one recess is arranged on the top surface of the shell, each recess is layered and the shape is suitable for the shape of a foot bottom, and each recess is used to put the bottom of a foot;

[0007] A through hole is formed in the front part of the bottom surface of the recess, and a fixing member is installed in the rear part of the recess, which is used to apply force to the front of the recess to the foot put in the recess, so that the hallux of the foot in the recess is opposite to the through hole of the recess;

[0008] Each groove is provided with a set of mode conversion structures, each set of mode conversion structures comprising: an active mode mechanism, a passive mode mechanism and an ultrasonic distance sensor, the active mode mechanism comprising: a first slider, a second spring, a thumb strap and a first guide rail, the first slider and the first guide rail being located in the shell, the first guide rail being fixed on the inner wall of the shell, the first slider sliding on the first guide rail in the horizontal direction, the thumb strap being annular, the thumb strap being located in the groove and being used to cover the foot thumb in the groove, the thumb strap being connected with the first slider, one end of the second spring being fixed with the first slider, the other end of the second spring being fixed with the inner wall of the shell, the second spring being a tension spring, so that the second spring exerts a force on the first slider towards the outside of the foot;

[0009] The passive mode mechanism comprises: a second slider, a second guide rail and a connecting rod, the second guide rail being fixed in the shell, the second slider being capable of sliding on the second guide rail in the vertical direction, the connecting rod being horizontally arranged, the second slider and the connecting rod being fixed, a driving member being arranged below each first slider, the driving member being fixed on the connecting rod, when the second slider slides upward on the second guide rail to connect the driving member with the first slider, the driving member can drive the first slider to slide on the first guide rail in the horizontal direction;

[0010] The ultrasonic distance sensor is used to test the sliding distance of the first slider on the first guide rail in the mode conversion structure, and the controller is electrically connected with the ultrasonic distance sensors of the two sets of mode conversion structures and reads the data of the ultrasonic distance sensors.

[0011] In the above technical solution, the fixing member is an arc panel.

[0012] In the above technical solution, the first slider and the second slider are each a rack, the tooth part of the first slider faces downward, the tooth part of the second slider faces the side surface of the shell, the thumb strap is connected with the upper end of the first slider, and the first guide rail and the second guide rail are each a rack box.

[0013] In the above technical solution, the second slider slides on the second guide rail through the second steering wheel, the second steering wheel is fixed on the inner wall of the shell, the second steering wheel is connected with the second gear shaft, and the second gear is engaged with the tooth part of the second slider, so that the second slider can slide on the second guide rail in the vertical direction.

[0014] In the above technical solution, the driving member comprises: a first steering wheel and a first gear, the first steering wheel is connected with the first gear, the first steering wheel is fixed on the connecting rod, and when the driving member is connected with the first slider, the first gear is engaged with the tooth part on the first slider.

[0015] In the above technical solution, the controller is electrically connected with the first steering wheel and the second steering wheel.

[0016] In the above technical solution, two vertically arranged sliding rods are fixed inside the housing, and slip rings are provided at both ends of the connecting rods, with the two slip rings respectively fitted onto the two sliding rods.

[0017] In the above technical solution, the fixing member is connected to the groove sidewall at the corresponding heel position by a first spring.

[0018] In the above technical solution, a foot strap is connected to the groove to fix the position of the foot during correction.

[0019] In the above technical solution, a thumb baffle is fixedly installed in the groove, and the thumb baffle is located on one side of the through hole.

[0020] In the above technical solution, a first transmission hole is provided on the first guide rail, the teeth of the first slider are exposed in the first transmission hole, and the first gear meshes with the teeth of the first slider exposed in the first transmission hole.

[0021] In the above technical solution, a second transmission hole is provided on the second guide rail, the teeth of the second slider are exposed in the second transmission hole, and the second gear meshes with the teeth of the second slider exposed in the second transmission hole.

[0022] This invention provides a combined active and passive hallux valgus correction device, offering both active and passive modes. In active mode, the user actively applies force with their big toe, while in passive mode, the device applies a corrective force to the user's big toe, passively correcting it through traction. The training effectiveness is evaluated using an ultrasonic distance sensor. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the active and passive combined hallux valgus correction device of the present invention;

[0024] Figure 2 This is a three-dimensional schematic diagram of the active and passive combined hallux valgus correction device of the present invention;

[0025] Figure 3 This is a three-dimensional schematic diagram of the active and passive combined hallux valgus correction device of the present invention after being inverted;

[0026] Figure 4 This is a three-dimensional schematic diagram of the first slider in the active and passive combined hallux valgus correction device of the present invention;

[0027] Figure 5 This is a three-dimensional schematic diagram of the active and passive combined hallux valgus correction device of the present invention after being inverted;

[0028] Figure 6 This is a three-dimensional schematic diagram of the passive mode mechanism in the active-passive combined hallux valgus correction device of the present invention;

[0029] Figure 7 This is a side cross-sectional view of the hallux valgus correction device combining active and passive methods of the present invention;

[0030] Figure 8 This is a three-dimensional schematic diagram of the active and passive combined hallux valgus correction device of the present invention after being inverted.

[0031] In the diagram: 1. Housing, 11. Groove, 111. Foot strap, 112. Fixing element, 113. First spring, 114. Thumb guard, 115. Through hole, 12. Slide rod; 2. Active mode mechanism, 21. First slider, 211. Receiving plate, 212. Protrusion, 213. Thumb strap, 22. Second spring, 23. First guide rail, 231. First transmission hole; 3. Passive mode mechanism, 31. First servo motor, 32. First gear, 33. Connecting rod, 34. Slip ring, 35. Second slider; 4. Ultrasonic distance sensor; 5. Display screen; 6. Second guide rail, 61. Second servo motor, 611. Second gear, 62. Second transmission hole. Detailed Implementation

[0032] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] To clearly demonstrate the internal structure of the housing, the hallux valgus correction device is inverted, as shown below. Figure 3 , Figure 5 , Figure 8 As shown. In the following embodiments, "upward" and "downward" are based on the active and passive combination of the hallux valgus correction device when it is in the correct position.

[0034] Example 1

[0035] A hallux valgus correction device that combines active and passive methods, such as Figure 1 and Figure 2 As shown, it includes: a housing 1, two sets of mode conversion structures and a controller. The housing 1 is a cavity with an open bottom surface. Two grooves 11 are provided on the top surface of the housing 1. The two grooves correspond to the two feet (feet) of a person. Each groove is used to place the bottom of a foot. Each groove is layered and its shape is adapted to the shape of the sole of a foot.

[0036] A through hole 115 is formed at the front of the bottom of the groove 11, and a fixing member 112 is installed at the rear of the groove 11 to apply force to the foot placed in the groove so that the big toe of the foot in the groove is opposite to the through hole of the groove.

[0037] Each groove corresponds to a set of mode conversion structures, and each set of mode conversion structures includes: active mode mechanism 2, passive mode mechanism 3 and ultrasonic distance sensor 4.

[0038] The active mode mechanism 2 includes: a first slider 21, a second spring 22, a thumb strap 213, and a first guide rail 23. The first slider 21 and the first guide rail 23 are located inside the housing 1. The first guide rail 23 is fixed to the inner wall of the housing. The first slider 21 slides horizontally on the first guide rail 23. The thumb strap 213 is ring-shaped and is located in a groove to hold the big toe in the groove. The thumb strap 213 is connected to the first slider. One end of the second spring 22 is fixed to the first slider 21, and the other end of the second spring 22 is fixed to the inner wall of the housing. The second spring 22 is a tension spring so that the second spring 22 applies a force to the first slider 21 toward the outside of the foot.

[0039] like Figure 5 and Figure 6 As shown, the passive mode mechanism 3 includes: a second slider 35, a second guide rail 6, and a connecting rod 33. The second guide rail 6 is fixedly installed in the housing. The second slider 35 can slide vertically on the second guide rail 6. The connecting rod 33 is horizontally arranged. The second slider 35 and the connecting rod 33 are fixedly installed (the sliding direction of the second slider 35 on the second guide rail is perpendicular to the length direction of the connecting rod 33). When the hallux valgus corrector is upright, a driving member is provided below each first slider 21. The driving member is fixedly installed on the connecting rod 33. When the second slider 35 slides upward on the second guide rail 6 until the driving member connects with the first slider, the driving member can drive the first slider 21 to slide horizontally on the first guide rail 23.

[0040] The ultrasonic distance sensor 4 is used to test the sliding distance of the first slider 21 on the first guide rail 23 in the mode conversion structure. The controller is electrically connected to the ultrasonic distance sensors 4 of the two sets of mode conversion structures and reads the data of the ultrasonic distance sensors 4.

[0041] The method of using the hallux valgus correction device combining active and passive methods of the present invention is as follows: Taking a groove as an example, place one foot into the groove 11, with the heel in contact with the fixing member 112. The fixing member 112 applies a force to the foot placed in the groove towards the front of the groove, so that the big toe of the foot in the groove is aligned with the through hole of the groove, and the big toe strap 213 is placed around the big toe. Select either active mode (patient performs active rehabilitation training) or passive mode. In active mode, the user actively exerts force with the big toe; in passive mode, the hallux valgus correction device applies a corrective force to the user's big toe, passively correcting the big toe through traction. In active mode, the big toe drives the first slider 21 to slide inward on the first guide rail, and the second spring applies a force to the first slider towards the outside of the foot; in passive mode, the first slider 21 actively slides inward on the first guide rail, causing the big toe to move horizontally. Specifically, as follows:

[0042] Active mode: The second slider 35 slides downward on the second guide rail until the driving component separates from the first slider (is not connected). The patient's big toe exerts force towards the inside of the foot, which drives the first slider 21 to move through the big toe strap 213, thereby stretching the second spring 22. Since the second spring 22 is a tension spring, it applies a force towards the outside of the foot to the big toe. The ultrasonic distance sensor 4 measures the change in the sliding distance of the first slider 21 on the first guide rail 23. The controller reads the data from the ultrasonic distance sensor 4. The controller can judge the patient's recovery status based on the maximum distance the first slider 21 moves and the time it maintains at the maximum distance (i.e., the correction duration and the magnitude of the correction).

[0043] Passive mode: The second slider 35 slides upward on the second guide rail until the driving component connects with the first slider. The driving component controls the distance, speed, and holding time of the first slider 21 sliding horizontally on the first guide rail 23 after reaching the maximum distance.

[0044] Example 2

[0045] Based on embodiment 2, the fastener 112 is an arc panel, which can better fit the curvature of the heel.

[0046] The first slider 21 and the second slider 35 each have a toothed rack, such as Figure 7 As shown, the teeth of the first slider 21 face downwards, the teeth of the second slider 35 face the side of the housing, the thumb strap 213 is connected to the upper end of the first slider 21, and the first guide rail 23 and the second guide rail are each a rack box (rack box: capable of installing rack and providing track for the sliding of rack).

[0047] The second slider 35 is driven to slide on the second guide rail by the second servo motor 61, which is fixed on the inner wall of the housing. The second servo motor 61 is shaft-connected to the second gear 611, and the second gear 611 meshes with the teeth of the second slider 35 so that the second slider 35 can slide vertically on the second guide rail.

[0048] The driving component includes a first servo motor 31 and a first gear 32, which are shaft-connected. The first servo motor 31 is fixedly mounted on a connecting rod 33. When the driving component is connected to the first slider, the first gear 32 meshes with the teeth on the first slider 21. The first servo motor 31 controls the sliding of the first slider 21 on the first guide rail, and the thumb strap 213 on the first slider 21 moves and corrects the movement of the big toe.

[0049] The controller is electrically connected to the first servo motor 31 and the second servo motor 61. The controller can switch the active and passive modes of the hallux valgus correction device of the present invention between active and passive modes by controlling the second servo motor 61. In passive mode, the controller controls the operation of the first servo motor 31.

[0050] Example 3

[0051] Based on embodiment 2, two vertically arranged slide rods 12 are fixedly installed inside the housing 1. Both ends of the connecting rod 33 are provided with slip rings 34. The two slip rings 34 are respectively sleeved on the two slide rods 12, which can improve the stability of the second slider 35 sliding on the second guide rail.

[0052] like Figure 7 and Figure 8 As shown, if the degree of hallux valgus in the user's left and right feet is different, different degrees of passive correction are required. The controller can send different commands to the two first servo motors 31 respectively.

[0053] Example 4

[0054] Based on embodiment 3, the fixing member 112 is connected to the side wall of the groove 11 at the corresponding heel position by the first spring 113 (one end of the first spring 113 is connected to the fixing member 112, and the other end is connected to the side wall of the groove 11).

[0055] The active and passive combination hallux valgus correction device of the present invention further includes: a display screen 5, which is mounted on the top surface of the housing and electrically connected to the controller.

[0056] like Figure 4 As shown, the thumb strap 213 is connected to the top of the first slider 21 via a protrusion 212. The top of the first slider 21 fits against the inner wall of the top surface of the housing 1. The protrusion 212 is located in the through hole 115. The protrusion 212 can slide horizontally within the through hole 115.

[0057] Each first slider 21 is fixedly mounted to a receiving plate 211, which corresponds to the ultrasonic distance sensor 4, so that the ultrasonic distance sensor 4 can obtain the sliding distance of the first slider 21 fixed to the receiving plate 211 on the first guide rail 23 through the receiving plate 211. As shown in the figure, the receiving plate 211 is vertically arranged and connected between the second spring 22 and the first slider 21.

[0058] The controller is an STM32.

[0059] A foot strap 111 is attached to the groove 11 to fix the position of the foot during correction.

[0060] A thumb baffle 114 is provided in the groove 11. The thumb baffle 114 is located on one side of the through hole 115. When the big toe moves, the thumb baffle 114 can prevent the movement of other toes besides the big toe.

[0061] The first guide rail 23 is provided with a first transmission hole 231, and the teeth of the first slider 21 are exposed in the first transmission hole 231. The first gear 32 meshes with the teeth of the first slider 21 exposed in the first transmission hole 231.

[0062] The second guide rail 6 is provided with a second transmission hole 62, and the teeth of the second slider 35 are exposed in the second transmission hole 62. The second gear 611 meshes with the teeth of the second slider 35 exposed in the second transmission hole 62.

[0063] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A hallux valgus correction device combining active and passive methods, characterized in that, include: The housing (1), two sets of mode conversion structures and controller, the housing (1) is a cavity, and at least one groove (11) is provided on the top surface of the housing (1). Each groove (11) is layered and its shape is adapted to the shape of the sole of a foot. Each groove (11) is used to place the bottom of a foot. A through hole (115) is formed at the front of the bottom of the groove (11), and a fixing member (112) is installed at the rear of the groove (11) to apply force to the foot placed in the groove (11) towards the front of the groove (11) so that the big toe of the foot in the groove (11) is opposite to the through hole (115) of the groove (11). Each groove (11) is provided with a set of mode conversion structures. Each set of mode conversion structures includes: an active mode mechanism (2), a passive mode mechanism (3), and an ultrasonic distance sensor (4). The active mode mechanism (2) includes: a first slider (21), a second spring (22), a thumb strap (213), and a first guide rail (23). The first slider (21) and the first guide rail (23) are located inside the housing (1). The first guide rail (23) is fixed on the inner wall of the housing (1). The first slider (21) is in the first... The guide rail (23) slides horizontally. The thumb strap (213) is ring-shaped. The thumb strap (213) is located in the groove (11) and is used to fit the big toe in the groove (11). The thumb strap (213) is connected to the first slider (21). One end of the second spring (22) is fixed to the first slider (21), and the other end of the second spring (22) is fixed to the inner wall of the housing (1). The second spring (22) is a tension spring so that the second spring (22) applies force to the first slider (21) towards the outside of the foot. The passive mode mechanism (3) includes: a second slider (35), a second guide rail (6) and a connecting rod (33). The second guide rail (6) is fixedly installed in the housing (1). The second slider (35) can slide vertically on the second guide rail (6). The connecting rod (33) is horizontally arranged. The second slider (35) and the connecting rod (33) are fixedly installed. A driving member is provided below each first slider (21). The driving member is fixedly installed on the connecting rod (33). When the second slider (35) slides upward on the second guide rail (6) until the driving member is connected to the first slider (21), the driving member can drive the first slider (21) to slide horizontally on the first guide rail (23). The ultrasonic distance sensor (4) is used to test the sliding distance of the first slider (21) on the first guide rail (23) in the mode conversion structure. The controller is electrically connected to the ultrasonic distance sensors (4) of the two mode conversion structures respectively and reads the data of the ultrasonic distance sensors (4).

2. The hallux valgus correction device combining active and passive methods according to claim 1, characterized in that, The fastener (112) is an arc panel.

3. The hallux valgus correction device combining active and passive methods according to claim 1, characterized in that, The first slider (21) and the second slider (35) are each a rack. The teeth of the first slider (21) face downwards, and the teeth of the second slider (35) face the side of the housing (1). The thumb strap (213) is connected to the upper end of the first slider (21). The first guide rail (23) and the second guide rail (6) are each a rack box.

4. The active and passive combined hallux valgus correction device according to claim 3, characterized in that, The second slider (35) is driven to slide on the second guide rail (6) by the second servo motor (61). The second servo motor (61) is fixed on the inner wall of the housing (1). The second servo motor (61) is shaft-connected to the second gear (611). The second gear (611) meshes with the teeth of the second slider (35) so that the second slider (35) can slide vertically on the second guide rail (6).

5. The hallux valgus correction device combining active and passive methods according to claim 4, characterized in that, The driving components include: The first servo motor (31) and the first gear (32) are axially connected. The first servo motor (31) is fixed on the connecting rod (33). When the drive unit is connected to the first slider (21), the first gear (32) meshes with the teeth on the first slider (21).

6. The hallux valgus correction device combining active and passive methods according to claim 5, characterized in that, The controller is electrically connected to the first servo motor (31) and the second servo motor (61) respectively.

7. The hallux valgus correction device combining active and passive methods according to claim 1, characterized in that, The housing (1) is fitted with two vertically arranged sliding rods (12), and both ends of the connecting rod (33) are provided with slip rings (34), which are respectively fitted onto the two sliding rods (12).

8. The hallux valgus correction device combining active and passive methods according to claim 1, characterized in that, The fastener (112) is connected to the side wall of the groove (11) at the corresponding heel position by the first spring (113); A foot strap (111) is connected to the groove (11) to fix the position of the foot during correction; A thumb baffle (114) is fixedly installed in the groove (11), and the thumb baffle (114) is located on one side of the through hole (115).

9. The hallux valgus correction device combining active and passive methods according to claim 3, characterized in that, The first guide rail (23) is provided with a first transmission hole (231), the teeth of the first slider (21) are exposed in the first transmission hole (231), and the first gear (32) meshes with the teeth of the first slider (21) exposed in the first transmission hole (231).

10. The hallux valgus correction device combining active and passive methods according to claim 3, characterized in that, The second guide rail (6) is provided with a second transmission hole (62), the teeth of the second slider (35) are exposed in the second transmission hole (62), and the second gear (611) meshes with the teeth of the second slider (35) exposed in the second transmission hole (62).

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