Flatfoot insole and manufacturing method thereof

Abstract

The invention relates to the field of physiotherapy insoles, and discloses a flatfoot insole and a manufacturing method thereof. The flatfoot insole comprises an insole body and a percutaneous nerve electrical stimulation mechanism. The insole body is provided with a foot arch supporting part, and the foot arch supporting part protrudes upwards relative to other parts of the insole body so as to support the foot arch part. The transcutaneous electrical nerve stimulation mechanism comprises a host, a handheld controller and an electrode plate, the host is arranged in the insole body, the electrode plate is laid on the top of the arch supporting part, the top surface of the electrode plate can be attached to the arch part, and the electrode plate is conductively connected with the host; and the handheld controller is in signal connection with the host and can control the host to operate, so that the host supplies power to the electrode plates to enable the electrode plates to electrically shock the arch parts. The foot pain can be relieved in the mode that the percutaneous nerve electrical stimulation mechanism discharges electricity to the foot arch part and the foot arch supporting part enables the foot sole to be evenly stressed.

Description

Technical Field

[0001] The invention relates to the field of physiotherapy insoles, and in particular to a flat foot insole and a manufacturing method thereof. Background Art

[0002] Flat feet refer to foot deformities caused by people wearing inappropriate shoes for a long time or incorrect walking posture, such as Figure 1 As shown, the deformity is manifested by a downward collapse of the arch area on the medial side of the midfoot.

[0003] Flat feet can cause the ankle to turn outward, and further cause foot pain, mainly pain in the arch area on the inner side of the midfoot, and the pain will extend to the ankle and inner side of the calf. Some severe flat feet are accompanied by severe pain.

[0004] Usually people with flat feet will use thickened insoles to relieve their foot discomfort, but traditional insoles are mainly suitable for normal feet and cannot effectively relieve the pain symptoms of flat feet. Therefore, it is very necessary to design an insole suitable for flat feet to help users relieve the pain of flat feet. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the traditional insole is not suitable for flat feet and cannot relieve the pain caused by flat feet.

[0006] On one hand, the present invention provides a flat foot insole, which includes an insole body and a transcutaneous electrical nerve stimulation mechanism. The insole body has an arch support portion, which is raised upward relative to other parts of the insole body to support the arch of the foot. The transcutaneous electrical nerve stimulation mechanism includes a host, a handheld controller and an electrode sheet, the host is arranged inside the insole body, the electrode sheet is laid on the top of the arch support portion, and the top surface of the electrode sheet can fit the arch of the foot, and the electrode sheet is conductively connected to the host; the handheld controller is connected to the host signal and can control the operation of the host, so that the host supplies power to the electrode sheet and the electrode sheet shocks the arch of the foot.

[0007] In some embodiments, the arch support is configured such that the arch support can keep the electrode sheet in constant contact with the arch during foot movement.

[0008] In some embodiments, the insole body has a base layer located below the arch support part, the arch support part includes an elastic layer, the elastic layer is fixedly connected to the top surface of the base layer, a cavity is provided inside the elastic layer, the part of the elastic layer located above the cavity is the first layer, the part of the elastic layer located below the cavity is the second layer, and the electrode sheet is laid on the top surface of the first layer; a plurality of elastic plates are provided in the cavity, the first layer and the second layer are connected by a part of the elastic plates, the elastic plates can exert an upward supporting force so that the first layer presses the electrode sheet against the arch part; a receiving slot is provided inside the cavity, the top periphery of the receiving slot is connected to the top of the elastic layer, and the main unit is installed in the receiving slot.

[0009] In some embodiments, the thickness of the first layer is greater than the thickness of the second layer, and the hardness of the base layer is greater than the hardness of the elastic layer.

[0010] In some embodiments, the top of the elastic layer is provided with an annular groove distributed around the accommodating slot body, and the annular groove is recessed downward from the top surface of the elastic layer; the insole body includes a sealing pad, and the periphery of the sealing pad is provided with an annular protrusion, which can be detachably inserted into the annular groove to close the accommodating slot body, and the top surface of the sealing pad is smoothly connected to the top surface of the first layer of the board, and the wire of the host machine can move through the sealing pad and be conductively connected to the electrode sheet.

[0011] In some embodiments, the bottom of the receiving tank body is connected to the second layer plate via another portion of an elastic plate member, and the elastic plate member can exert an upward supporting force on the receiving tank body.

[0012] In some embodiments, a plurality of connecting posts are provided on the bottom surface of the electrode sheet, an enlarged portion is provided at the bottom end of the connecting post, a plurality of through holes adapted to the connecting posts are provided on the first layer of the board, a diameter of the enlarged portion is larger than the aperture of the through hole, all through holes correspond one-to-one to all connecting posts, and the connecting posts pass through the through holes to fix the electrode sheet to the elastic layer.

[0013] In some embodiments, the bottom surface of the insole body is configured as a frosted surface.

[0014] In some embodiments, the insole body is provided with a protective layer, which is distributed along the inner edge of the insole body and can fit the inner side of the foot.

[0015] On the other hand, the present invention provides a method for making a flat foot insole, which comprises the following steps: S1. Collecting foot information: performing a foot shape scan to obtain sole size information, and performing a sole pressure test to obtain foot stress distribution information. S2. Modeling of the flat foot insole: determining the plane contour of the insole body according to the sole size information, determining the thickness of each position within the plane contour of the insole body according to the foot stress distribution information, and including the step of determining the raised height of the arch support part according to the stress distribution information of the arch part of the foot; then, according to the plane contour of the insole body and the thickness of each position within the plane contour of the insole body, modeling the flat foot insole to form a flat foot insole model with a preset accommodation space inside. S3. Printing the flat foot insole: printing the insole body with an accommodation space inside according to the flat foot insole model, wherein the arch support part is raised upward relative to other parts of the insole body to support the arch part. S4. Install the transcutaneous electrical nerve stimulation mechanism: install the host of the transcutaneous electrical nerve stimulation mechanism in the accommodating space of the insole body, then fix the electrode of the transcutaneous electrical nerve stimulation mechanism on the top surface of the arch support part, and make conductive connection between the electrode and the host, and keep the handheld controller of the transcutaneous electrical nerve stimulation mechanism outside the insole body.

[0016] In some embodiments, in step S3, the following steps are further included: the insole body is printed using the first raw material, and a support portion printing area is reserved at the position of the insole body corresponding to the arch of the foot. The second raw material is used to print an elastic layer with elasticity in the support portion printing area to form an arch support portion, and the hardness of the insole body is greater than the hardness of the arch support portion. Among them, the part of the insole body located below the elastic layer is the base layer, the elastic layer is provided with a cavity inside, the part of the elastic layer located above the cavity is the first layer, and the part of the elastic layer located below the cavity is the second layer. The first layer and the second layer are connected by a plurality of elastic plates, and the electrode sheet is used to be laid on the top surface of the first layer; a receiving tank is provided inside the cavity, and the top periphery of the receiving tank is connected to the top of the elastic layer, and the host is used to be installed in the receiving tank.

[0017] The above technical solution of the present invention has the following beneficial effects:

[0018] When a person's foot is walking in a shoe with a flat foot insole, the raised arch support part pushes up the collapsed arch part, so that the flat foot can walk in a normal arch shape, and the walking gait can be improved. And the arch support part provides appropriate support to the foot, which can make the force distribution of the sole of the foot more uniform, thereby alleviating the discomfort caused by flat feet. The host can supply power to the electrode sheet, and the electrode sheet attached to the arch part can send electric current stimulation to the foot skin, thereby stimulating the peripheral nerves, so that the peripheral nerves release endogenous analgesics or block the transmission of pain signals, thereby effectively relieving pain. Therefore, the flat foot insole of the present invention is very suitable for flat feet, and can reduce foot pain by discharging the arch part of the foot through a transcutaneous electrical nerve stimulation mechanism and making the sole of the foot force uniform through the arch support part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the footprints of people with flat feet;

[0020] Figure 2 is a schematic diagram of a flat foot insole according to an embodiment of the present invention;

[0021] Figure 3 is a cross-sectional schematic diagram of an arch support portion according to an embodiment of the present invention;

[0022] Figure 4 is a top schematic diagram of an arch support portion according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of a top covering sealing pad of an arch support portion according to an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the use of a flat foot insole according to an embodiment of the present invention.

[0025] Description of Reference Numerals

[0026] 1. Insole body; 11. Arch support part; 12. Elastic layer; 121. Through hole; 13. Base layer; 14. Protective layer;

[0027] 2. Transcutaneous electrical nerve stimulation mechanism; 21. Host; 22. Electrode sheet; 221. Connecting column; 222. Amplifying part;

[0028] 3. Arch of the foot;

[0029] 4. Accommodating tank body; 41. Annular groove; 42. Cavity; 43. Elastic plate; 44. Sealing gasket; 45. Annular protrusion. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention are described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] In the present invention, unless otherwise stated, the directional words such as "upper" and "lower" usually refer to the orientation in the assembled state. "Inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] like Figure 6 As shown, the present invention provides a flat foot insole, which includes an insole body 1 and a transcutaneous electrical nerve stimulation mechanism 2. The insole body 1 has an arch support portion 11, and the arch support portion 11 is raised upward relative to other parts of the insole body 1 to support the arch portion 3. The transcutaneous electrical nerve stimulation mechanism 2 includes a host 21, a handheld controller and an electrode sheet 22, the host 21 is arranged inside the insole body 1, the electrode sheet 22 is laid on the top of the arch support portion 11, and the top surface of the electrode sheet 22 can fit the arch portion 3, and the electrode sheet 22 is conductively connected to the host 21; the handheld controller is connected to the host 21 signal and can control the operation of the host 21, so that the host 21 supplies power to the electrode sheet 22 and the electrode sheet 22 shocks the arch portion 3.

[0034] Specifically, when a person's foot is walking in a shoe with a flat foot insole placed thereon, the raised arch support 11 pushes up the collapsed arch part 3 of the foot, so that the flat foot can walk in a normal arch shape, and the walking gait can be improved. And the arch support 11 provides appropriate support to the foot, which can make the force distribution of the sole of the foot more uniform, thereby alleviating the discomfort caused by flat feet. The host 21 can supply power to the electrode sheet 22, and the electrode sheet 22 attached to the arch part 3 can send electric current stimulation to the foot skin, thereby stimulating the peripheral nerves, causing the peripheral nerves to release endogenous analgesics or causing the peripheral nerves to block the transmission of pain signals, thereby effectively relieving pain. Therefore, the flat foot insole of the present invention is very suitable for flat feet, and can reduce foot pain by discharging the arch part 3 of the foot through the transcutaneous electrical nerve stimulation mechanism 2 and making the sole of the foot force uniform through the arch support 11.

[0035] It should be noted that the discharge frequency, current intensity and voltage of the transcutaneous electrical nerve stimulation mechanism 2 can be changed according to the degree of pain, and the present invention does not impose any limitation thereto.

[0036] In some embodiments, the handheld controller can be any device such as a mobile phone or an independent remote controller that can achieve the above-mentioned technical effects. The handheld controller and the host 21 can be connected via Bluetooth, and the user can adjust the electric shock intensity at any time through the handheld controller according to their own needs.

[0037] The host 21 can be any device that can achieve the above technical effects. In some embodiments, the host 21 is provided with a charging port to facilitate charging the power supply in the host 21. In other embodiments, the power supply in the host 21 can also be a disposable battery, which can be replaced with a new power supply after the power is exhausted.

[0038] In some embodiments, the arch support portion 11 may be a solid block-shaped component with elasticity to facilitate supporting the electrode sheet 22 .

[0039] In some embodiments of the present invention, the arch support portion 11 is configured such that the arch support portion 11 can keep the electrode sheet 22 in constant contact with the arch portion 3 during foot movement.

[0040] Specifically, when the foot is pressed on the insole body 1, the arch part 3 can be fully in contact with the electrode sheet 22; when the foot is lifted, based on the support of the arch support part 11, the electrode sheet 22 can also fit the arch part 3. Therefore, during the foot movement, the electrode sheet 22 can continuously discharge electricity to the arch part 3 to relieve pain, ensuring the continuity of the pain relief effect.

[0041] During walking, especially when the foot is lifted, the foot may be temporarily separated from the electrode sheet 22, resulting in the foot being unable to receive electrical stimulation from the electrode sheet 22, thereby possibly failing to fully exert the analgesic effect of the transcutaneous electrical nerve stimulation mechanism 2.

[0042] In order to fully exert the analgesic effect of the transcutaneous electrical nerve stimulation mechanism 2, the present invention provides the following solution. Figure 2 and Figure 3 As shown, in some embodiments of the present invention, the insole body 1 has a base layer 13 located below the arch support part 11, the arch support part 11 includes an elastic layer 12, the elastic layer 12 is fixedly connected to the top surface of the base layer 13, and a cavity 42 is provided inside the elastic layer 12. The portion of the elastic layer 12 located above the cavity 42 is the first layer, and the portion of the elastic layer 12 located below the cavity 42 is the second layer, and the electrode sheet 22 is laid on the top surface of the first layer; a plurality of elastic plates 43 are provided in the cavity 42, the first layer and the second layer are connected by a portion of the elastic plate 43, and the elastic plate 43 can exert an upward supporting force so that the first layer presses the electrode sheet 22 against the arch part 3; a receiving slot 4 is provided inside the cavity 42, the top periphery of the receiving slot 4 is connected to the top of the elastic layer 12, and the host 21 is installed in the receiving slot 4.

[0043] Specifically, a cavity 42 is provided in the elastic layer 12, and the first layer can be lowered when the top surface thereof is subjected to downward pressure, and can be lifted upward when the pressure is reduced or withdrawn. The plurality of elastic plates 43 provided in the cavity 42 can increase the supporting force of the elastic layer 12, so that the top surface of the first layer can effectively support the arch part 3. In a natural state, the raised height of the arch support part 11 is slightly higher than the arch height that should be raised. When the foot is pressed on the insole body 1, the elastic layer 12 is subjected to the pressure of the arch part 3, so that the first layer is compressed and deformed downward, and the receiving tank body 4 equipped with the host 21 will be lowered together with the lowering of the first layer, and the first layer always applies an upward supporting force to the arch part 3 so that the electrode sheet 22 fits the arch part 3. During walking, when the foot is lifted and tends to move away from the insole body 1, the first layer will bounce upward and recover with the lifting of the foot, and press the electrode sheet 22 against the arch part 3, thereby preventing the contact between the sole and the electrode sheet 22 from being disconnected during the lifting of the foot. During the process of the first layer of plate bouncing upward and recovering, the first layer of plate can always press the electrode sheet 22 against the arch of the foot 3, so that the electrode sheet 22 can send an electric shock to the arch of the foot 3. Therefore, the elastic layer 12 can make the arch of the foot 3 continuously receive the electrical stimulation of the electrode sheet 22, so as to give full play to the analgesic effect of the transcutaneous electrical nerve stimulation mechanism 2.

[0044] Therefore, a cavity 42 supported by multiple elastic plates 43 is provided in the arch support portion 11, so that the electrode sheet 22 can remain in contact with the arch portion 3 based on elastic force and continuously discharge the sole of the foot during foot movement; at the same time, the weight of the insole body 1 can also be reduced, making the use of the flat foot insole easier.

[0045] In some embodiments of the present invention, the thickness of the first layer is greater than the thickness of the second layer, and the hardness of the base layer 13 is greater than the hardness of the elastic layer 12 .

[0046] Specifically, the base layer 13 has a relatively high hardness and the second layer is relatively thin, so that the base layer 13 can play a supporting role and the elastic force formed by the elastic plate 43 acts upward on the electrode sheet 22 .

[0047] like Figure 4 and Figure 5 As shown, in some embodiments of the present invention, the top of the elastic layer 12 is provided with an annular groove 41 distributed around the accommodating slot body 4, and the annular groove 41 is recessed downward from the top surface of the elastic layer 12; the insole body 1 includes a sealing pad 44, and the periphery of the sealing pad 44 is provided with an annular protrusion 45, and the annular protrusion 45 can be detachably inserted into the annular groove 41 to close the accommodating slot body 4, and the top surface of the sealing pad 44 is smoothly connected to the top surface of the first layer of the board, and the wire of the host 21 movably passes through the sealing pad 44 and is conductively connected to the electrode sheet 22.

[0048] Specifically, the sealing pad 44 seals the main unit 21 in the receiving tank 4, which can prevent rainwater and dust from entering the main unit 21. In addition, the top surface of the sealing pad 44 is smoothly connected with the top surface of the first layer of the board, so that the portion of the electrode sheet 22 laid on the top surface of the sealing pad 44 and the portion of the electrode sheet 22 laid on the top surface of the first layer of the board can smoothly transition, ensuring the comfort of the foot when using it.

[0049] In some embodiments of the present invention, the bottom of the accommodating tank body 4 is connected to the second layer of the plate via another portion of the elastic plate member 43 , and the elastic plate member 43 can exert an upward supporting force on the accommodating tank body 4 .

[0050] In some embodiments of the present invention, a plurality of connecting columns 221 are provided on the bottom surface of the electrode sheet 22, an enlarging portion 222 is provided at the bottom end of the connecting column 221, a plurality of through holes 121 adapted to the connecting columns 221 are provided on the first layer of the board, a diameter of the enlarging portion 222 is larger than the aperture of the through hole 121, all the through holes 121 correspond one-to-one to all the connecting columns 221, and the connecting columns 221 pass through the through holes 121 to fix the electrode sheet 22 to the elastic layer 12.

[0051] Specifically, the electrode sheet 22 is composed of a conductive layer, a gel and a protective film. The conductive layer is made of a metal fiber conductive composite cloth to provide electrical signal conduction; the gel layer is covered with a sticky gel to ensure stable contact between the electrode sheet 22 and the sole skin; the protective film is made of a plastic hard film, which is used to isolate the conductive layer and the gel layer when the device is not working to avoid contact with the outside world. When the electrode sheet 22 is used many times, the viscosity of the gel layer will decrease, and the electrode sheet 22 needs to be replaced in time. Pull out the connecting column 221 of the electrode sheet 22 from the through hole 121, then disconnect the wire connection with the host 21, connect the new electrode sheet 22 to the host 21 conductively, and then insert the connecting column 221 of the new electrode sheet 22 into the through hole 121.

[0052] Specifically, when the electrode sheet 22 needs to be removed, the connecting column 221 and the enlarged portion 222 can be pulled out of the through hole 121. When the electrode sheet 22 needs to be installed, the connecting column 221 and the enlarged portion 222 can be inserted into the through hole 121. The cooperation between the connecting column 221, the enlarged portion 222 and the through hole 121 facilitates the disassembly and installation of the electrode sheet 22.

[0053] In some embodiments of the present invention, the bottom surface of the insole body 1 is set to a frosted surface, which can increase the friction between the bottom surface and the shoe upper, thereby preventing the insole body 1 from sliding in the shoe during use.

[0054] In some embodiments of the present invention, the insole body 1 is provided with a protective layer 14 , which is distributed along the inner edge of the insole body 1 and can fit the inner side of the foot to protect the inner side of the foot.

[0055] Another aspect of the present invention provides a method for making a flat foot insole, the method comprising the following steps:

[0056] S1. Foot information collection: Perform foot scan to obtain plantar size information, and perform plantar pressure test to obtain foot stress distribution information. Plantar size information is used to determine the size information of the flat foot insole in the width and length directions. Foot stress distribution information can be analyzed to obtain the area of ​​abnormal plantar stress. For the flat foot insole corresponding to the area of ​​abnormal plantar stress, its height should be appropriately adjusted to make the stress distribution of the plantar uniform.

[0057] S2. Modeling of flat foot insoles: Determine the plane contour of the insole body 1 according to the sole size information, and determine the thickness of each position within the plane contour of the insole body 1 according to the foot stress distribution information. The plane contour of the insole body 1 refers to the contour formed by the vertical projection of the insole body 1 when it is placed horizontally. And it includes the step of determining the bulge height of the arch support part 11 according to the stress distribution information of the arch part 3 of the foot; then, according to the plane contour of the insole body 1 and the thickness of each position within the plane contour of the insole body 1, the flat foot insole is modeled to form a flat foot insole model with a preset accommodation space inside. In some embodiments, the accommodation space is set in the arch support part 11, and the accommodation space is used to install the transcutaneous electrical nerve stimulation mechanism 2.

[0058] S3. Printing flat foot insoles: Printing an insole body 1 having an internal accommodation space according to the flat foot insole model (for example, by 3D printing technology), wherein the arch support portion 11 bulges upward relative to other parts of the insole body 1 to support the arch part 3.

[0059] S4. Install the transcutaneous electrical nerve stimulation mechanism 2: install the host 21 of the transcutaneous electrical nerve stimulation mechanism 2 in the accommodation space of the insole body 1, and then fix the electrode sheet 22 of the transcutaneous electrical nerve stimulation mechanism 2 to the top surface of the arch support part 11, and the electrode sheet 22 is conductively connected to the host 21, and the handheld controller of the transcutaneous electrical nerve stimulation mechanism 2 is retained outside the insole body 1. After the transcutaneous electrical nerve stimulation mechanism 2 is installed, the user can use the handheld remote control to control the motor sheet to emit electrical stimulation, thereby achieving an analgesic effect, and the user can control the discharge frequency and discharge size of the electrode sheet 22 through the handheld controller according to the degree of pain in the sole of the foot.

[0060] Specifically, the manufacturing method can manufacture the flat foot insole of the above embodiment, and the flat foot insole manufactured by the method can achieve the above technical effects.

[0061] In some embodiments of the present invention, in step S3, the following steps are further included: the insole body 1 is printed (for example, by 3D printing technology) using the first raw material, and a support portion printing area is reserved at the position of the insole body 1 corresponding to the arch portion 3. The elastic layer 12 with elasticity is printed (for example, by 3D printing technology) in the support portion printing area using the second raw material to form the arch support portion 11, and the hardness of the insole body 1 is greater than the hardness of the arch support portion 11. Among them, the part of the insole body 1 located below the elastic layer 12 is the base layer 13, the elastic layer 12 is provided with a cavity 42 inside, the part of the elastic layer 12 located above the cavity 42 is the first layer plate, and the part of the elastic layer 12 located below the cavity 42 is the second layer plate, the first layer plate and the second layer plate are connected by a plurality of elastic plate members 43, and the electrode sheet 22 is used to be laid on the top surface of the first layer plate; the cavity 42 is provided with a receiving tank body 4, and the top periphery of the receiving tank body 4 is connected to the top of the elastic layer 12, and the host 21 is used to be installed in the receiving tank body 4. Preferably, the first raw material and the second raw material may be elastic polyurethane material, polylaurolactam material, thermoplastic polyurethane rubber material or silicone rubber material, etc.

[0062] In some embodiments of the present invention, step S3 further includes the step of printing and installing the sealing gasket 44. The sealing gasket 44 is printed by 3D printing technology, and the printed sealing gasket 44 has an annular protrusion 45; then the annular protrusion 45 is inserted into the annular groove 41 formed on the first layer of the board to install the sealing gasket 44, and the wire between the mainframe 21 and the electrode sheet 22 passes through the sealing gasket 44, and the sealing gasket 44 seals the receiving tank body 4.

[0063] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0064] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0065] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A flat foot insole, characterized in that: It comprises an insole body (1) and a transcutaneous electrical nerve stimulation mechanism (2); The insole body (1) has an arch support portion (11), and the arch support portion (11) is raised upward relative to other parts of the insole body (1) so as to support the arch portion (3); The transcutaneous electrical nerve stimulation mechanism (2) comprises a host (21), a handheld controller and an electrode sheet (22); the host (21) is arranged inside the insole body (1); the electrode sheet (22) is laid on the top of the arch support part (11), and the top surface of the electrode sheet (22) can be in contact with the arch part (3); the electrode sheet (22) is conductively connected to the host (21); the handheld controller is connected to the host (21) by signal and can control the operation of the host (21) so that the host (21) supplies power to the electrode sheet (22) so that the electrode sheet (22) shocks the arch part (3).

2. The flat foot insole according to claim 1, characterized in that: The arch support portion (11) is configured such that the arch support portion (11) can keep the electrode sheet (22) always in contact with the arch portion (3) during foot movement.

3. The flat foot insole according to claim 2, characterized in that: The insole body (1) comprises a base layer (13) located below the arch support portion (11); the arch support portion (11) comprises an elastic layer (12); the elastic layer (12) is fixedly connected to the top surface of the base layer (13); a cavity (42) is provided inside the elastic layer (12); the portion of the elastic layer (12) located above the cavity (42) is a first layer plate; the portion of the elastic layer (12) located below the cavity (42) is a second layer plate; the electrode sheet (22) is laid on the top surface of the first layer plate; A plurality of elastic plates (43) are provided in the cavity (42); the first layer plate and the second layer plate are connected via a portion of the elastic plates (43); and the elastic plates (43) are capable of exerting an upward supporting force so that the first layer plate presses the electrode sheet (22) against the arch of the foot (3); A receiving groove body (4) is provided inside the cavity (42), the top periphery of the receiving groove body (4) is connected to the top of the elastic layer (12), and the host (21) is installed in the receiving groove body (4).

4. The flat foot insole according to claim 3, characterized in that: The thickness of the first layer plate is greater than the thickness of the second layer plate, and the hardness of the base layer (13) is greater than the hardness of the elastic layer (12).

5. The flat foot insole according to claim 4, characterized in that: The top of the elastic layer (12) is provided with an annular groove (41) which is distributed around the accommodating groove body (4), and the annular groove (41) is recessed downward from the top surface of the elastic layer (12); The insole body (1) comprises a sealing pad (44), the periphery of which is provided with an annular protrusion (45), the annular protrusion (45) being detachably inserted into the annular groove (41) to close the containing groove body (4), and the top surface of the sealing pad (44) is smoothly connected to the top surface of the first layer board, and the wire of the host (21) movably passes through the sealing pad (44) and is conductively connected to the electrode sheet (22).

6. The flat foot insole according to claim 5, characterized in that: The bottom of the accommodating trough body (4) is connected to the second layer plate via another part of the elastic plate member (43), and the elastic plate member (43) is capable of exerting an upward supporting force on the accommodating trough body (4).

7. The flat foot insole according to claim 6, characterized in that: The bottom surface of the electrode sheet (22) is provided with a plurality of connecting pillars (221), the bottom end of the connecting pillar (221) is provided with an enlarged portion (222), the first layer plate is provided with a plurality of through holes (121) adapted to the connecting pillars (221), the diameter of the enlarged portion (222) is larger than the aperture of the through hole (121), all the through holes (121) correspond to all the connecting pillars (221) one by one, and the connecting pillars (221) pass through the through holes (121) to fix the electrode sheet (22) to the elastic layer (12).

8. The flat foot insole according to claim 7, characterized in that: The bottom surface of the insole body (1) is configured as a frosted surface; And / or, the insole body (1) is provided with a protective layer (14), and the protective layer (14) is distributed along the inner edge of the insole body (1) and can fit the inner side of the foot.

9. A method for making a flat foot insole, characterized in that: The steps include: S1. Foot information collection: Perform foot scan to obtain plantar size information, and perform plantar pressure test to obtain foot stress distribution information; S2, modeling of a flat foot insole: determining the plane contour of the insole body (1) according to the sole size information, determining the thickness of each position within the plane contour of the insole body (1) according to the foot stress distribution information, and including the step of determining the raised height of the arch support portion (11) according to the stress distribution information of the arch portion (3) of the foot; then, modeling the flat foot insole according to the plane contour of the insole body (1) and the thickness of each position within the plane contour of the insole body (1) to form a flat foot insole model with a preset internal accommodation space; S3, printing the flat foot insole: printing the insole body (1) having the accommodation space therein according to the flat foot insole model, wherein the arch support portion (11) bulges upward relative to other portions of the insole body (1) so as to support the arch portion (3); and S4. Installing the transcutaneous electrical nerve stimulation mechanism (2): installing the host (21) of the transcutaneous electrical nerve stimulation mechanism (2) in the accommodation space of the insole body (1), and then fixing the electrode sheet (22) of the transcutaneous electrical nerve stimulation mechanism (2) on the top surface of the arch support part (11), and the electrode sheet (22) and the host (21) are conductively connected, and the handheld controller of the transcutaneous electrical nerve stimulation mechanism (2) is retained outside the insole body (1).

10. The method for making a flat foot insole according to claim 9, characterized in that: In step S3, the following steps are further included: The insole body (1) is printed using the first raw material, and a support portion printing area is reserved at a position of the insole body (1) corresponding to the arch portion (3); Using a second raw material to print the elastic layer (12) having elasticity in the support portion printing area to form the arch support portion (11), the hardness of the insole body (1) being greater than the hardness of the arch support portion (11); The portion of the insole body (1) located below the elastic layer (12) is a base layer (13); a cavity (42) is provided inside the elastic layer (12); a portion of the elastic layer (12) located above the cavity (42) is a first layer; a portion of the elastic layer (12) located below the cavity (42) is a second layer; the first layer and the second layer are connected via a plurality of elastic plates (43); the electrode sheet (22) is used for laying on the top surface of the first layer; a receiving tank body (4) is provided inside the cavity (42); the top periphery of the receiving tank body (4) is connected to the top of the elastic layer (12); and the host (21) is used for being installed in the receiving tank body (4).

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