Flatfoot correction functional shoe

Abstract

This invention relates to a flat foot corrective shoe, comprising a sole body, a corrective insole matched to the sole body, an arch support mechanism, and a gait linkage mechanism. The sole body has an open-topped receiving cavity in the arch region, within which the arch support mechanism is embedded. The arch support mechanism includes a support body, a stiffness adjustment component, and two sets of left-right arranged elastic support units. The upper surface of the support body is in contact with the lower surface of the arch region of the corrective insole, and the elastic support units are located between the lower surface of the support body and the bottom wall of the receiving cavity. This invention, through the coordinated operation of the gait linkage mechanism and the arch support mechanism, can synchronously adjust the support height of the support body during the gait cycle. During the gait support phase, the support body is synchronously raised to provide dynamic support matching the force applied to the sole, achieving immediate correction of arch collapse. During the gait swing phase, the support body is synchronously lowered to relieve continuous pressure on the arch, allowing the arch to relax naturally.

Description

Technical Field

[0001] This invention relates to the field of wearable orthotic devices, specifically to a flat foot corrective shoe. Background Technology

[0002] Flat feet are the most common biomechanical abnormality of the foot in clinical practice, referring to the collapse or disappearance of the arch of the foot, resulting in abnormal pressure distribution on the sole of the foot when standing and walking. This can easily lead to plantar fasciitis, heel pain, knee and hip joint degeneration, and even secondary injuries such as pelvic tilt and scoliosis. Among them, patients with unilateral flat feet or significant differences in the degree of flatness between the two feet account for more than 14%, and are often accompanied by complex deformities such as leg length discrepancy and unilateral hallux valgus, making clinical correction difficult.

[0003] Traditional flat foot correction shoes mostly adopt a symmetrical, fixed-rigidity arch support design, which can only be adapted to patients with the same degree of flatness in both feet. They cannot meet the clinical needs of unilateral flat feet or bilateral differential flat feet. They are prone to problems such as insufficient support stiffness on the affected side and poor correction effect, while excessive support on the healthy side and imbalance of foot load, which can aggravate gait disorder and joint compensatory damage.

[0004] Furthermore, traditional orthotic shoes typically employ static, fixed arch support structures, which cannot adapt to the dynamic changes in plantar biomechanics during the support and swing phases of the gait. During the support phase, the arch requires sufficient support to correct collapse, but the fixed structure often provides insufficient support. During the swing phase, the arch needs to relax naturally, and the fixed structure continuously compresses the arch, easily leading to discomfort, fatigue, or even injury to the soft tissues of the arch, resulting in poor patient compliance. Summary of the Invention

[0005] Based on this, the present invention provides a flat foot correction shoe that can achieve gait adaptive and precise correction for bilateral flat feet, improving gait symmetry and long-term correction effect.

[0006] This application provides a flat foot correction shoe, including a sole body, a corrective insole matched and disposed on the sole body, an arch support mechanism and a gait linkage mechanism;

[0007] The arch support mechanism is fitted into the arch support area of ​​the sole body with an open upper cavity.

[0008] The arch support mechanism includes a support body, a stiffness adjustment component, and two sets of elastic support units arranged on the left and right sides.

[0009] The upper surface of the support body is in contact with the lower surface of the arch area of ​​the orthopedic insole, and the elastic support unit is located between the lower surface of the support body and the bottom wall of the receiving cavity;

[0010] The stiffness adjustment component works in conjunction with the elastic support unit to adjust and lock the support stiffness of the elastic support unit;

[0011] The gait linkage mechanism is located in the heel area of ​​the main body of the sole and is linked with the arch support mechanism to synchronously adjust the support height of the support body during the gait cycle.

[0012] In one implementation, the elastic support unit includes a guide sleeve, a support column, and a support spring;

[0013] The guide sleeve is vertically fixed to the bottom wall of the receiving cavity with its opening facing upwards;

[0014] The bottom surface of the support body and the positions of the two guide sleeves are each provided with a downward-facing bottom groove;

[0015] The lower end of the support column is slidably inserted into the corresponding guide sleeve, and the upper end is hinged to the inner top wall of the corresponding bottom groove through a ball head;

[0016] The support spring is sleeved on the outside of the support column, with one end of the support spring fixed to the top wall of the bottom groove and the other end fixed to the top end face of the guide sleeve.

[0017] In one implementation, the stiffness adjustment assembly includes an adjustment screw, a nut seat, and a pair of wedges;

[0018] The adjusting screw is rotatably installed in the receiving cavity, and a guide rod is fixed in the receiving cavity on one side of the adjusting screw;

[0019] The extension direction of the adjusting screw is consistent with the arrangement direction of the two guide sleeves, and the guide rod is parallel to the adjusting screw;

[0020] The nut seat is threadedly fitted onto the adjusting screw, and the guide rod slides through the nut seat;

[0021] A U-shaped frame is fixed to the side of the nut seat, and wedge-shaped blocks with the same orientation are fixed to both ends of the U-shaped frame;

[0022] Both guide sleeves have through notches on their outer walls for the wedge blocks to pass through;

[0023] The positions of the two wedge-shaped blocks correspond one-to-one with the two through-holes;

[0024] The inclined surface of the wedge block and the bottom end of the support column are in contact and fit together.

[0025] The first side hole is provided on the side of the main body of the shoe sole;

[0026] One end of the adjusting screw extends through into the first side hole and is fixed with a first internal hex head.

[0027] In one implementation, the gait linkage mechanism includes a pressure pad, a support block, a return spring, and a linkage component;

[0028] The main body of the shoe sole has an installation cavity in the heel area, and the pressure pad is slidably embedded in the upper end of the installation cavity;

[0029] A support block is located below the pressure pad inside the mounting cavity;

[0030] Several vertically extending return springs are evenly distributed between the support block and the pressure pad;

[0031] One end of the return spring is fixed to the bottom surface of the pressure pad, and the other end is fixed to the top surface of the support block;

[0032] The linkage is located between the pressure pad and the support bracket to achieve linkage between the pressure pad and the support bracket.

[0033] In one implementation, the linkage includes a linkage arm;

[0034] The main body of the shoe sole has a connecting cavity located between the receiving cavity and the mounting cavity;

[0035] A rotating shaft is rotatably installed inside the connecting cavity, and a linkage arm is fixedly mounted on the rotating shaft;

[0036] One end of the linkage arm is in contact with the bottom surface of the support body, and the other end is in contact with the bottom surface of the pressure pad.

[0037] In one implementation, the mounting cavity is provided with a height adjustment component for adjusting the initial height of the pressure pad;

[0038] The height adjustment assembly includes a shaft and a cam;

[0039] The outer edge of the support block slides and fits against the inner wall of the mounting cavity;

[0040] The shaft is rotatably mounted inside the mounting cavity and located below the support block;

[0041] The cam is fixedly mounted on the shaft and abuts against the bottom surface of the support block.

[0042] In one implementation, a drive cavity is provided on the side of the mounting cavity within the main body of the sole;

[0043] One end of the shaft extends through into the drive chamber and is fixed with a worm gear;

[0044] A worm gear is rotatably mounted inside the drive cavity, and the worm gear meshes with a worm wheel.

[0045] A second side hole is provided on the side of the main body of the shoe sole;

[0046] One end of the worm gear extends through into the second side hole and is fixed with a second internal hex head.

[0047] In one implementation, the forefoot area of ​​the orthotic insole has a support pad located on the outside of the big toe;

[0048] The support pad and the orthotic insole are molded as one piece and extend toward the inside of the big toe.

[0049] In one implementation, the forefoot pressure relief zone of the corrective insole is uniformly provided with honeycomb holes;

[0050] The honeycomb holes have replaceable cushioning pads inside.

[0051] In one implementation, the main body of the sole adopts a 3D printed integrated molding structure, and the material is a medical-grade PA12 and TPU composite material.

[0052] The receiving cavity, mounting cavity, and connecting cavity are all 3D printed integral cavity structures.

[0053] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0054] By independently setting stiffness adjustment components and elastic support units on the left and right sides of the shoe, the support stiffness of the support body can be independently adjusted and locked according to the different flatness of the feet. This can provide sufficient corrective support to the affected side of flat feet to limit excessive arch collapse, while avoiding excessive support on the healthy side that causes imbalance of foot load. This solves the problems of poor adaptability of traditional orthotic shoes with symmetrical design, which can easily aggravate gait disorders and joint compensatory damage.

[0055] Through the coordinated operation of the gait linkage mechanism and the arch support mechanism, the support height of the support support can be adjusted synchronously during the gait cycle. During the gait support phase, the support support is raised synchronously to provide dynamic support force that matches the force on the sole of the foot, achieving immediate correction of arch collapse. During the gait swing phase, the support support is lowered synchronously to relieve continuous compression on the arch, allowing the arch to relax naturally. This effectively avoids the soft tissue fatigue, wearing discomfort, and even secondary injuries that are easily caused by traditional static fixed structures.

[0056] By setting a height adjustment component in the heel area, the initial height of the pressure pad can be steplessly adjusted and self-locked, adapting to the height compensation needs of common lower limb leg length discrepancies in clinical practice. Moreover, the height adjustment does not affect the normal operation of the gait linkage mechanism, and can simultaneously achieve static lower limb force line compensation and dynamic gait correction, effectively improving problems such as pelvic tilt and scoliosis secondary to leg length discrepancies, and expanding the clinical application scenarios of corrective shoes. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the single-sided shoe body structure of the present invention;

[0058] Figure 2 A schematic diagram showing the separate structure of the main sole and the corrective insole;

[0059] Figure 3 This is a schematic diagram of a partial structure on the main body of the shoe sole;

[0060] Figure 4 for Figure 3 A partial cross-sectional schematic diagram of the structure shown;

[0061] Figure 5 This is a schematic diagram of the arch support mechanism in this invention;

[0062] Figure 6 This is a schematic diagram of the stiffness adjustment component in this invention;

[0063] Figure 7 This is a schematic diagram of the gait linkage mechanism in this invention;

[0064] Figure 8 This is a schematic diagram of the height adjustment component in this invention;

[0065] Figure 9 This is a partial structural diagram of the orthopedic insole in this invention.

[0066] In the diagram: 1. Main body of the sole; 11. Receiving cavity; 12. Installation cavity; 13. Connecting cavity; 2. Corrective insole; 21. Support pad; 22. Honeycomb holes; 23. Cushioning pad; 3. Support bracket; 301. Bottom groove; 31. Guide sleeve; 311. Through notch; 32. Support column; 33. Support spring; 4. Adjusting screw; 401. First side hole; 402. First internal hexagon head; 41. Guide rod; 42. Nut seat; 43. U-shaped frame; 44. Wedge block; 5. Pressure pad; 51. Support block; 52. Return spring; 6. Shaft; 601. Drive cavity; 602. Second side hole; 61. Cam; 62. Worm gear; 63. Worm; 64. Second internal hexagon head; 7. Linkage arm; 71. Rotating shaft. Detailed Implementation

[0067] This invention provides a flat foot correction shoe that can achieve gait adaptive and precise correction for bilateral flat feet, improve gait symmetry and long-term correction effect. The following is a detailed description of this correction shoe with reference to embodiments.

[0068] This invention is not limited to the specific embodiments listed below. Those skilled in the art can implement this invention using various other specific embodiments based on the content disclosed herein. Any modifications or alterations made to the design structure and concept of this invention fall within the protection scope of this invention. It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0069] Please see Figures 1-9The corrective shoe includes a left and right shoe body with independent design. The left and right shoe bodies have the same structure and their adjustment mechanisms are independent of each other. They can be independently adjusted for the flatness of the left and right feet and the distribution of plantar pressure to adapt to the clinical correction needs of unilateral flat feet and bilateral differential flat feet.

[0070] Both the left and right shoe bodies include a sole body 1, an orthotic insole 2 matched and installed on the sole body 1, an arch support mechanism, and a gait linkage mechanism.

[0071] The sole body 1 adopts a 3D printed integrated molding structure, and the material is a medical-grade PA12 and TPU composite material, which takes into account both structural support strength and wearing cushioning performance. The arch area of ​​the sole body 1 is provided with an upper open receiving cavity 11, the heel area is provided with an installation cavity 12, and a connecting cavity 13 is provided between the receiving cavity 11 and the installation cavity 12 to connect the two.

[0072] The receiving cavity 11, the mounting cavity 12, and the connecting cavity 13 are all 3D printed integral cavity structures, and each cavity edge is provided with a silicone sealing dustproof layer to prevent dust and moisture from entering the cavity during daily wear and affecting the operation of the mechanism.

[0073] The arch support mechanism is installed in the receiving cavity 11 and includes a support support body 3, a stiffness adjustment component, and two sets of elastic support units arranged on the left and right.

[0074] like Figure 4 and Figure 5 As shown, the support body 3 is slidably installed at the upper end of the receiving cavity 11. It is an arc-shaped support plate adapted to the physiological curvature of the human foot arch. Its upper surface is completely in contact with the lower surface of the arch area of ​​the corrective insole 2, providing surface contact support for the arch and avoiding discomfort caused by local stress concentration. The bottom surface of the support body 3 and the corresponding positions of the two sets of elastic support units are respectively provided with downward-facing bottom grooves 301.

[0075] Each set of elastic support units includes a guide sleeve 31, a support column 32, and a support spring 33. The guide sleeve 31 is vertically fixed to the inner bottom wall of the receiving cavity 11 with its opening facing upward. The lower end of the support column 32 is slidably inserted into the corresponding guide sleeve 31, and the upper end of the support column 32 is hinged to the inner top wall of the corresponding bottom groove 301 through a hinged ball joint. The guide sleeve 31 is used to limit the radial displacement of the support column 32, ensuring that the support column 32 can only slide in the vertical direction, and avoiding deviation during the support process.

[0076] The support spring 33 is sleeved on the outside of the support column 32. One end of the support spring 33 is fixedly connected to the inner top wall of the bottom groove 301, and the other end is fixedly connected to the top end face of the guide sleeve 31, providing basic elastic support force for the support body 3.

[0077] The stiffness adjustment component works in conjunction with the elastic support unit to adjust and lock the support stiffness of the elastic support unit. The stiffness adjustment component includes an adjusting screw 4, a guide rod 41, a nut seat 42, and a pair of wedge blocks 44.

[0078] Combination Figure 6 As shown, the adjusting screw 4 is rotatably mounted on the inner wall of the receiving cavity 11 along the arrangement direction of the two sets of guide sleeves 31. The guide rod 41 is arranged parallel to the adjusting screw 4, and both ends of the guide rod 41 are fixed on the inner wall of the receiving cavity 11.

[0079] The nut seat 42 has a threaded hole in the middle, which is threaded to the adjusting screw 4. The nut seat 42 also has a sliding hole that matches the guide rod 41. The guide rod 41 slides through the sliding hole. By limiting the position of the guide rod 41, the nut seat 42 can only translate along the axial direction of the adjusting screw 4 and will not rotate synchronously with the adjusting screw 4.

[0080] A U-shaped frame 43 is fixed to the side of the nut seat 42. Both ends of the U-shaped frame 43 are fixed with wedge blocks 44 facing the same direction. The outer walls of the two guide sleeves 31 are provided with through notches 311 for the wedge blocks 44 to pass through. The positions of the two wedge blocks 44 and the two through notches 311 correspond one-to-one. The inclined surface of the wedge blocks 44 is set towards the bottom end of the support column 32.

[0081] In the non-wearing state, there is a gap between the wedge block 44 and the bottom end of the support column 32, and the two do not contact each other; when the support column 32 is subjected to force, it slides downward under pressure, and the inclined surface of the wedge block 44 can abut against the bottom end of the support column 32 to limit the downward movement limit of the support column 32.

[0082] The main body 1 of the sole has a first side hole 401 on its side. One end of the adjusting screw 4 extends through the first side hole 401 and is fixed with a first internal hex head 402. The first internal hex head 402 adopts a hidden design and can only be rotated and adjusted with a matching internal hex wrench to avoid non-professionals from arbitrarily adjusting the correction parameters.

[0083] The gait linkage mechanism is located in the heel area of ​​the sole body 1 and is linked with the arch support mechanism. It is used to synchronously adjust the support height of the support body 3 during the gait cycle. It includes a pressure pad 5, a support block 51, several return springs 52 and linkage components.

[0084] like Figure 4 and Figure 7 As shown, the pressure pad 5 is slidably embedded in the upper end of the mounting cavity 12 in the vertical direction, and its upper surface is in contact with the lower surface of the heel area of ​​the corrective insole 2 to receive the vertical pressure of the heel when walking.

[0085] The support block 51 is located inside the mounting cavity 12, below the pressure pad 5. The outer edge of the support block 51 is slidably attached to the inner wall of the mounting cavity 12 and can slide vertically along the inner wall of the mounting cavity 12. Several return springs 52 are vertically and evenly distributed between the pressure pad 5 and the support block 51. One end of the return spring 52 is fixedly connected to the bottom surface of the pressure pad 5 and the other end is fixedly connected to the top surface of the support block 51, providing an upward return force for the pressure pad 5.

[0086] When the patient walks, the heel strikes the ground first, entering the gait support phase. The heel area bears the vertical pressure of the human body, and the pressure pad 5 moves downward under pressure, simultaneously compressing the return spring 52, which plays a cushioning and protective role for the heel.

[0087] The linkage includes a linkage arm 7, a rotating shaft 71 is rotatably installed in the connecting cavity 13, and the linkage arm 7 is fixedly mounted on the rotating shaft 71; one end of the linkage arm 7 extends into the receiving cavity 11 and abuts against the bottom surface of the support bracket 3, and the other end of the linkage arm 7 extends into the mounting cavity 12 and abuts against the bottom surface of the pressure pad 5, forming a lever linkage structure.

[0088] The mounting cavity 12 is also equipped with a height adjustment component for adjusting the initial height of the pressure pad 5 to accommodate the compensation requirements for leg length discrepancy. The adjustment range is 0-15mm. The height adjustment component includes a shaft 6 and a cam 61.

[0089] Combination Figure 8 As shown, the shaft 6 is rotatably installed in the mounting cavity 12 below the support block 51. The cam 61 is fixedly fitted on the shaft 6, and the outer edge of the cam 61 abuts against the bottom surface of the support block 51. A drive cavity 601 is provided in the side of the mounting cavity 12 inside the shoe sole body 1. One end of the shaft 6 extends through into the drive cavity 601 and is fixed with a worm gear 62. A worm 63 is rotatably installed in the drive cavity 601. The worm 63 meshes with the worm gear 62. Self-locking is achieved through the unidirectional transmission characteristics of the worm 63 and the worm gear 62 to prevent the shaft 6 from rotating on its own under external force.

[0090] The main body 1 of the sole has a second side hole 602 on its side. One end of the worm 63 extends through the second side hole 602 and is fixed with a second internal hex head 64. The second internal hex head 64 also adopts a hidden design and requires an internal hex wrench for adjustment.

[0091] The corrective insole 2 is made of anti-pressure sore memory foam material, with an antibacterial and breathable fabric covering the surface. The overall structure is removable, making it easy to clean and replace daily.

[0092] like Figure 9 As shown, the forefoot area of ​​the corrective insole 2 is integrally formed with a support pad 21 corresponding to the outer side of the big toe. The support pad 21 extends toward the inner side of the big toe to limit the outward displacement of the big toe and realize the synchronous correction of hallux valgus.

[0093] In addition, the forefoot pressure relief area of ​​the orthotic insole 2 is evenly provided with honeycomb holes 22, and the honeycomb holes 22 contain a replaceable cushioning pad 23. The cushioning pad 23 is made of medical-grade silicone material to reduce local pressure on the forefoot, which is suitable for people with high pressure on the soles of their feet and patients with diabetic foot.

[0094] Based on the above structure, the core working principle of this flat foot corrective shoe is as follows:

[0095] The static stiffness adjustment principle is designed for patients with unilateral flat feet or varying degrees of flatness in both feet. It allows for independent adjustment of the support stiffness of the left and right shoe components. The specific process is as follows:

[0096] By rotating the first hex head 402 of the corresponding shoe body with the matching hex wrench, the adjusting screw 4 is driven to rotate synchronously. The adjusting screw 4 drives the nut seat 42 to translate axially along the guide rod 41 through the thread transmission, and then drives the two wedge blocks 44 to translate synchronously through the U-shaped frame 43, changing the relative position of the inclined surface of the wedge block 44 and the bottom end of the support column 32.

[0097] When the wedge block 44 moves toward the support column 32, the initial contact position between the inclined surface of the wedge block 44 and the bottom end of the support column 32 moves upward, the downward movement of the support column 32 is shortened, the maximum compression of the support spring 33 is limited, and the support stiffness is increased accordingly.

[0098] Conversely, when the wedge block 44 moves away from the support column 32, the initial contact position between the inclined surface of the wedge block 44 and the bottom end of the support column 32 moves downward, the downward stroke of the support column 32 increases, the maximum compression of the support spring 33 increases, and the support stiffness decreases accordingly.

[0099] In the non-wearing state, the wedge block 44 and the bottom end of the support column 32 always maintain a gap and no contact. Only when the support column 32 moves down to the preset position under the wearing force will the inclined surface of the wedge block 44 abut against the bottom end of the support column 32, thus restricting its further downward movement.

[0100] After adjustment, the position of the wedge block 44 can be locked by relying on the self-locking performance of the threaded pair between the adjusting screw 4 and the nut seat 42, thus ensuring the stability of the support stiffness.

[0101] For the affected side of flat feet, the support stiffness can be adjusted to a higher level to limit excessive arch collapse and achieve correction; for the unaffected side or the side with a milder degree of flatness, the stiffness can be adjusted to a suitable level to provide basic support while ensuring normal arch deformation and avoiding excessive support, ultimately achieving differentiated and precise correction for both feet.

[0102] Through the lever linkage between the gait linkage mechanism and the arch support mechanism, adaptive correction is achieved throughout the entire gait cycle, specifically divided into two phases: the support phase and the swing phase.

[0103] When the patient walks, the heel strikes the ground first, entering the gait support phase. The heel area bears the vertical pressure of the human body, and the pressure pad 5 moves downward under pressure, simultaneously compressing the return spring 52. As the pressure pad 5 moves downward, it presses down on the heel side end of the linkage arm 7, causing the linkage arm 7 to rotate around the pivot 71. The arch side end of the linkage arm 7 then rises upward, lifting the support support 3 and simultaneously increasing the support height of the arch area, providing immediate support for the collapsed arch, limiting further arch collapse, and achieving effective correction during the support phase.

[0104] At the same time, the elastic support force of the support spring 33 and the linkage lifting force are superimposed to form a dynamic support that matches the force of gait, thus avoiding impact damage to the arch of the foot caused by rigid support.

[0105] When the patient's heel leaves the ground and enters the gait swing phase, the vertical pressure in the heel area disappears. The elasticity of the return spring 52 pushes the pressure pad 5 upward to return to its original position. The pressure pad 5 drives the linkage arm 7 to rotate in the opposite direction. The arch side end of the linkage arm 7 falls downward. The support body 3 falls synchronously under the rebound of the support spring 33. The height of the arch support decreases accordingly, relieving the continuous compression on the arch and allowing the arch to relax naturally during the swing phase. This avoids fatigue and pain in the soft tissues of the arch caused by long-term continuous support, thus balancing the corrective effect with wearing comfort.

[0106] The principle of height compensation for leg length discrepancy is designed for patients with flat feet and leg length discrepancy. It achieves precise height compensation through a height adjustment component. The specific process is as follows:

[0107] By turning the second hex head 64 with the matching hex wrench, the worm gear 63 is driven to rotate synchronously. The worm gear 63 drives the worm wheel 62 and the shaft 6 to rotate synchronously through meshing transmission. The shaft 6 drives the cam 61 to rotate. During the rotation of the cam 61, the support block 51 is pushed to slide vertically along the mounting cavity 12, thereby adjusting the initial height of the support block 51. Finally, the initial height of the pressure pad 5 is infinitely adjustable, with an adjustment range of 0-15mm, which fully covers the common clinical needs for compensation of leg length discrepancy.

[0108] After adjustment, the adjustment position is locked by the one-way self-locking performance of the worm gear 62 and worm 63 to prevent displacement during walking. At the same time, the dynamic stroke of the pressure pad 5 is not affected by the initial height adjustment, and the gait adaptive correction function can operate normally, realizing the synchronous performance of static height compensation and dynamic gait correction, effectively improving secondary injuries such as pelvic tilt and scoliosis caused by leg length discrepancy.

[0109] As a further technical solution for this orthotic shoe, a digital monitoring and early warning module is also incorporated to achieve quantitative monitoring and intelligent early warning of the correction process. The specific structure is as follows:

[0110] The digital monitoring and early warning module includes a distributed pressure sensing unit, a six-axis gyroscope gait monitoring unit, a main control unit, an early warning unit, a power supply unit, and a wireless communication unit. All of the above units adopt existing technologies, and their specific structures and principles will not be described in detail, nor are they shown in the figure.

[0111] The distributed pressure sensing unit uses three sets of flexible thin-film pressure sensors, which are respectively embedded in the preset grooves in the forefoot, arch, and heel areas of the sole body 1. The upper surface of the distributed pressure sensing unit is in contact with the lower surface of the corrective insole 2, and the sampling frequency is set to 100Hz to accurately collect the real-time pressure values ​​of each area of ​​the sole.

[0112] The six-axis gyroscope gait monitoring unit is embedded in the sealed groove on the side wall of the mounting cavity 12. It is used to collect acceleration and angular velocity data in real time during walking and to identify gait cycle and abnormal gait characteristics.

[0113] The main control unit uses a low-power MCU chip and is integrated with the power supply unit and wireless communication unit in the sealed cavity of the heel area of ​​the sole body 1. The sealed cavity adopts a waterproof and dustproof design with a protection level of IP67.

[0114] The main control unit is electrically connected to the distributed pressure sensing unit, the six-axis gyroscope gait monitoring unit, and the early warning unit, respectively, and is used to receive and process the collected pressure and gait data.

[0115] The warning unit includes a miniature buzzer and a miniature vibrator, both of which are embedded in the inner wall of the heel of the main sole 1 and electrically connected to the main control unit. They are used to receive instructions from the main control unit and issue auditory and tactile warnings.

[0116] The power supply unit uses a 3.7V rechargeable lithium battery with a capacity of 1000mAh. The matching Type-C charging port is located inside the waterproof rubber plug on the outer side of the main body of the shoe sole 1. A single full charge can support more than 24 hours of continuous operation and is used to power the entire module.

[0117] The wireless communication unit uses a Bluetooth 5.0 module, which is integrated on the main control board of the main control unit. It can stably connect to the mobile APP terminal and has a transmission distance of not less than 10 meters to realize wireless data transmission.

[0118] After the patient wears this functional shoe, the distributed pressure sensing unit collects pressure data in real time from the forefoot, arch, and heel areas of the foot, while the six-axis gyroscope gait monitoring unit collects gait data in real time during walking. All data is transmitted to the main control unit in real time.

[0119] After the main control unit processes and analyzes the data, it transmits it to the mobile APP terminal through the wireless communication unit. The APP terminal can generate real-time pressure cloud map and gait cycle curve, quantitatively display the difference in pressure distribution between the two feet and gait symmetry parameters, and automatically generate a correction effect evaluation report.

[0120] When the main control unit detects abnormal gait (such as foot inversion, foot eversion, or gait asymmetry) for three or more consecutive gait cycles, it immediately activates the early warning unit, which emits a prompt sound through a miniature buzzer and generates vibration through a miniature vibrator, thus achieving dual real-time early warning and reminding the patient to adjust their gait in a timely manner.

[0121] For patients with diabetic foot, a personalized pressure safety threshold (such as 300 kPa) can be preset on the APP terminal. When the local pressure on the sole of the foot continuously exceeds the threshold, the early warning unit is immediately triggered to issue an early warning, and the APP terminal pushes an early warning notification to facilitate timely adjustment of the correction parameters.

[0122] Meanwhile, the APP terminal can generate adjustment suggestions for support stiffness and heel height based on the collected bipedal pressure and gait data, guiding patients to accurately adjust the correction parameters through the stiffness adjustment component and the height adjustment component. After adjustment, the adjustment effect can be verified through the collected data, forming a complete closed-loop correction system.

[0123] All collected data supports offline storage and cloud backup, and can be exported as standardized correction reports. It can be integrated with clinical medical systems to provide data support for doctors' diagnosis and adjustment of rehabilitation plans.

[0124] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A flat foot corrective shoe, comprising a sole body (1) and a corrective insole (2) matched and disposed on the sole body (1), characterized in that: It also includes the arch support mechanism and the gait linkage mechanism; The main body of the sole (1) has an open-top cavity (11) in the arch area, and the arch support mechanism is embedded in the cavity (11). The arch support mechanism includes a support body (3), a stiffness adjustment component, and two sets of elastic support units arranged on the left and right sides; The upper surface of the support body (3) is in contact with the lower surface of the arch area of ​​the corrective insole (2), and the elastic support unit is located between the lower surface of the support body (3) and the bottom wall of the receiving cavity (11). The stiffness adjustment component works in conjunction with the elastic support unit to adjust and lock the support stiffness of the elastic support unit; The gait linkage mechanism is located in the heel area of ​​the sole body (1) and is linked with the arch support mechanism to synchronously adjust the support height of the support support body (3) during the gait cycle.

2. The flat foot corrective shoe according to claim 1, characterized in that: The elastic support unit includes a guide sleeve (31), a support column (32), and a support spring (33). The guide sleeve (31) is vertically fixed to the bottom wall of the receiving cavity (11) with its opening facing upward; The bottom surface of the support bracket (3) and the two guide sleeves (31) are each provided with a downward-facing bottom groove (301). The lower end of the support column (32) is slidably inserted into the corresponding guide sleeve (31), and the upper end is hinged to the inner top wall of the corresponding bottom groove (301) through a ball head; The support spring (33) is sleeved on the outside of the support column (32), and one end of the support spring (33) is fixed to the top wall of the bottom groove (301), and the other end is fixed to the top end face of the guide sleeve (31).

3. A flat-foot corrective shoe according to claim 2, characterized in that: The stiffness adjustment assembly includes an adjustment screw (4), a nut seat (42), and a pair of wedges (44); The adjusting screw (4) is rotatably installed in the receiving cavity (11), and a guide rod (41) is fixed in the receiving cavity (11) on one side of the adjusting screw (4). The extension direction of the adjusting screw (4) is consistent with the arrangement direction of the two guide sleeves (31), and the guide rod (41) is parallel to the adjusting screw (4); The nut seat (42) is threadedly fitted onto the adjusting screw (4), and the guide rod (41) slides through the nut seat (42). A U-shaped frame (43) is fixed to the side of the nut seat (42), and wedge blocks (44) with the same orientation are fixed to both ends of the U-shaped frame (43). Both guide sleeves (31) have through notches (311) on their outer walls for the wedge block (44) to pass through. The positions of the two wedge-shaped blocks (44) and the two through notches (311) correspond one-to-one; The inclined surface of the wedge block (44) is in contact with the bottom end of the support column (32); The main body of the sole (1) has a first side hole (401) on its side. One end of the adjusting screw (4) extends through into the first side hole (401) and is fixed with a first internal hexagon head (402).

4. A flat foot corrective shoe according to claim 1, characterized in that: The gait linkage mechanism includes a pressure pad (5), a support block (51), a return spring (52), and a linkage component; The heel area of ​​the sole body (1) is provided with an installation cavity (12), and the pressure pad (5) is slidably embedded in the upper end of the installation cavity (12); A support block (51) is provided inside the mounting cavity (12) below the pressure pad (5). A plurality of vertically extending return springs (52) are evenly distributed between the support block (51) and the pressure pad (5). One end of the reset spring (52) is fixed to the bottom surface of the pressure pad (5), and the other end is fixed to the top surface of the support block (51); The linkage component is located between the pressure pad (5) and the support bracket (3) to achieve linkage between the pressure pad (5) and the support bracket (3).

5. A flat foot corrective shoe according to claim 4, characterized in that: The linkage component includes the linkage arm (7); The sole body (1) has a connecting cavity (13) located between the receiving cavity (11) and the mounting cavity (12). A rotating shaft (71) is rotatably installed inside the communicating cavity (13), and the linkage arm (7) is fixedly mounted on the rotating shaft (71); One end of the linkage arm (7) abuts against the bottom surface of the support bracket (3), and the other end abuts against the bottom surface of the pressure pad (5).

6. A flat foot corrective shoe according to claim 4, characterized in that: The mounting cavity (12) is provided with a height adjustment component for adjusting the initial height of the pressure pad (5); The height adjustment assembly includes a shaft (6) and a cam (61); The outer edge of the support block (51) slides against the inner wall of the mounting cavity (12); The shaft (6) is rotatably mounted in the mounting cavity (12) and located below the support block (51); The cam (61) is fixedly mounted on the shaft (6) and abuts against the bottom surface of the support block (51).

7. A flat foot corrective shoe according to claim 6, characterized in that: The shoe sole body (1) has a drive cavity (601) located on the side of the mounting cavity (12). One end of the shaft (6) extends through into the drive cavity (601) and is fixed with a worm gear (62). A worm (63) is rotatably mounted in the drive cavity (601), and the worm (63) meshes with the worm wheel (62). The main body of the sole (1) has a second side hole (602) on its side. One end of the worm (63) extends through into the second side hole (602) and is fixed with a second internal hex head (64).

8. A flat foot corrective shoe according to claim 1, characterized in that: The forefoot area of ​​the corrective insole (2) is provided with a support pad (21) on the outside of the big toe. The support pad (21) is integrally formed with the orthotic insole (2) and extends toward the inside of the big toe.

9. A flat foot corrective shoe according to claim 1, characterized in that: The forefoot pressure relief area of ​​the corrective insole (2) is uniformly provided with honeycomb holes (22); The honeycomb holes (22) are equipped with replaceable cushioning pads (23).

10. A flat foot corrective shoe according to claim 1, characterized in that: The sole body (1) adopts a 3D printed integrated molding structure, and the material is a medical-grade PA12 and TPU composite material; The accommodating cavity (11), mounting cavity (12) and connecting cavity (13) are all 3D printed integral cavity structures.

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