Color-changing foot warming patch with medicine slow release function

Abstract

The utility model relates to a color-changing foot warming patch with a medicine slow-release function, which comprises a cloth layer, the cloth layer comprises a cloth layer main body, and the cloth layer main body is provided with a first hook-and-loop fastener male surface; the medicine layer comprises a medicine layer main body and a color changing layer main body attached to the medicine layer main body, the color changing layer main body is made of a PH sensitive material, one side of the medicine layer main body is provided with a first hook-and-loop fastener female surface, and one side of the color changing layer main body is provided with a second hook-and-loop fastener male surface; the heating layer comprises a heating layer main body, and the heating layer main body is provided with a second magic tape female surface; wherein the cloth layer main body, the medicine layer main body and the heating layer main body are sequentially attached from top to bottom, the first hook-and-loop fastener male surface is connected with the first hook-and-loop fastener female surface, and the second hook-and-loop fastener male surface is connected with the second hook-and-loop fastener female surface; according to the utility model, the foot warming and medicine applying functions can be flexibly split and combined, so that the use scene of the foot warming patch is improved; and the residual medicine amount of the foot warming patch can be intuitively judged, so that the utilization rate of the medicine is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to foot warming patch technical field, especially a color change foot warming patch with drug slow release function. BACKGROUND

[0002] In cold winter, people with underlying diseases (such as diabetes) often have multiple needs such as warming, medicine application and massage at the same time. The existing foot warming patch products combine heating and medicine application functions, which can provide comfort and treatment effect after application, and can well meet the treatment needs of these users. In practical application, the foot warming patch can also provide combinations of heating and massage, heating and medicine application, and massage and medicine application, which can produce more significant effects.

[0003] In the prior art, for example, Chinese patent CN209966735U discloses a new foot warming and health care patch and shoe pad. The patent combines a heating bag, a medicine powder bag and a medicine ointment together to realize the dual functions of foot warming and medicine application. However, this technical solution has some deficiencies. First, the foot warming and medicine application functions cannot be separated. In actual application, some functions (such as medicine application) may no longer be needed to be retained as the needs change during use, so the patent cannot flexibly adapt to the needs of users in different scenarios. Second, the patent fails to provide an intuitive way to judge the use of medicine, so users cannot accurately know the remaining amount of medicine, which may cause waste of medicine or failure to achieve the treatment effect. SUMMARY

[0004] Therefore, the utility model wants to solve the technical problem that the foot warming and medicine application functions of the foot warming patch in the prior art cannot be separated, cannot flexibly meet the needs of users in different scenarios, and users cannot intuitively judge the remaining amount of medicine in the foot warming patch, and further provides a color change foot warming patch with drug slow release function, which can flexibly separate and combine the foot warming and medicine application functions, improve the use scenarios of the foot warming patch, and can also intuitively judge the remaining amount of medicine in the foot warming patch, improving the utilization rate of medicine.

[0005] To solve the above technical problems, the utility model provides a color change foot warming patch with drug slow release function, comprising,

[0006] The cloth layer comprises a cloth layer main body, and the cloth layer main body is provided with a first magic tape male face;

[0007] The medicine layer comprises a medicine layer main body and a color change layer main body attached to the medicine layer main body, the color change layer main body is composed of a PH sensitive material, one side of the medicine layer main body is provided with a first magic tape female face, and one side of the color change layer main body is provided with a second magic tape male face;

[0008] The heating layer comprises a heating layer main body, and the heating layer main body is provided with a second magic tape female face; wherein,

[0009] The cloth layer body and the medicine layer body are attached, and the first magic tape male surface is connected with the first magic tape female surface; or,

[0010] The cloth layer body and the heating layer body are attached, and the first magic tape male surface is connected with the second magic tape female surface; or,

[0011] The cloth layer body, the medicine layer body and the heating layer body are attached from top to bottom, and the first magic tape male surface is connected with the first magic tape female surface, and the second magic tape male surface is connected with the second magic tape female surface.

[0012] In an embodiment of the present application, the medicine layer further comprises a medicine permeation layer, the medicine permeation layer is arranged between the cloth layer body and the medicine layer body, and the medicine permeation layer is attached to the cloth layer body and the medicine layer body.

[0013] In an embodiment of the present application, the medicine layer further comprises a color change permeation layer, the color change permeation layer is arranged between the medicine layer body and the color change layer body, and the color change permeation layer is attached to the medicine layer body and the color change layer body.

[0014] In an embodiment of the present application, the color change permeation layer is attached to the color change layer body and the medicine layer body on the opposite sides.

[0015] In an embodiment of the present application, the color change permeation layer is attached to the color change layer body and the medicine layer body on the opposite sides.

[0016] In an embodiment of the present application, the first magic tape male surface is located at two ends of the cloth layer body, the first magic tape female surface is arranged on the medicine permeation layer and located at two ends of the medicine permeation layer, the second magic tape male surface is arranged on the color change layer body and located at two ends of the color change layer body, and the second magic tape female surface is located at two ends of the heating layer body.

[0017] In an embodiment of the present application, the heating layer body is arranged by a plurality of heating units and perspective units along a plane, a plurality of the heating units and a plurality of the perspective units distributed along a first direction are arranged alternately, and a plurality of the heating units and a plurality of the perspective units distributed along a second direction are arranged alternately.

[0018] In an embodiment of the present application, the heating unit is arranged in a convex shape, and the perspective unit is arranged in a concave shape.

[0019] In an embodiment of the present application, adjacent the heating unit and the perspective unit are connected by needle stitching.

[0020] In one embodiment of the present application, the cloth layer body is further provided with a plurality of elastic bands, and the elastic bands and the first magic tape public face are respectively located on opposite sides of the cloth layer body.

[0021] In one embodiment of the present application, the elastic band and the cloth layer body are connected by needle and thread sewing.

[0022] In one embodiment of the present application, the color-changing layer body and the color-changing permeable layer are connected by sewing, the color-changing permeable layer and the medicine layer body are connected by sewing, and the medicine layer body and the medicine permeable layer are connected by sewing.

[0023] Compared with the prior art, the above technical solution of the present application has the following beneficial effects:

[0024] The color-changing foot warming patch with the medicine slow-release function has the following advantages: the PH sensitive color-changing material in the color-changing layer body has different color changes for different residual amounts of the medicine gel, so that the user can accurately and conveniently determine whether the medicine is used up in real time; meanwhile, the cloth layer, the medicine layer and the heating layer are all provided with magic tapes, the cloth layer and the medicine layer, the cloth layer and the heating layer, and the heating layer and the medicine layer can be flexibly split and combined by using the magic tapes, the user can not only heat the sole or apply the medicine alone, but also heat and apply the medicine at the same time, so that the different scene requirements of the user are effectively met. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to the specific embodiments of the present application and in combination with the drawings, in which

[0026] Figure 1 FIG. 1 is a structure schematic view of an explosion diagram of the color-changing foot warming patch with the medicine slow-release function;

[0027] Figure 2 FIG. 2 is a top view of the color-changing foot warming patch with the medicine slow-release function;

[0028] Figure 3 FIG. 3 is a structure schematic view of a heating layer of the color-changing foot warming patch with the medicine slow-release function.

[0029] The description of the drawings is as follows: 1a1, elastic band; 1a2, elastic band; 1b1, first Velcro male face; 1b2, first Velcro male face; 1c, cloth layer main body; 2a1, first Velcro female face; 2a2, first Velcro female face; 2b1, medicine permeation layer; 2b, medicine layer main body; 2b2, color change permeation layer; 2c, color change layer main body; 2d1, second Velcro male face; 2d2, second Velcro male face; 3a1, second Velcro female face; 3a2, second Velcro female face; 3b, heating layer main body; 3b2, heating unit; 3b1, perspective unit. DETAILED DESCRIPTION

[0030] The utility model will be further described below in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model. EMBODIMENT

[0031] Reference Figure 1 As shown in the figure, in one embodiment of the utility model, a color change foot warming patch with drug slow release function is disclosed, comprising,

[0032] The cloth layer comprises a cloth layer main body 1c, which is used to support the foot bottom, and the cloth layer main body 1c is provided with a first Velcro male face 1b1 / 1b2, which is used to quickly connect and detach the cloth layer main body 1c.

[0033] The medicine layer comprises a medicine layer main body 2b and a color change layer main body 2c attached to the medicine layer main body 2b, the medicine layer main body 2b contains a drug component for medicine application to the foot, the color change layer main body 2c is composed of a PH sensitive material, the PH sensitive color change material shows different colors for different residual amounts of the drug gel, so that the user can accurately and conveniently judge whether the drug is used up in real time, one side of the medicine layer main body 2b is provided with a first Velcro female face 2a1 / 2a2, and one side of the color change layer main body 2c is provided with a second Velcro male face 2d1 / 2d2, wherein the cloth layer main body 1c and the medicine layer main body 2b are attached tightly, and the first Velcro female face 2a1 / 2a2 is connected with the first Velcro male face 1b1 / 1b2.

[0034] The heating layer comprises a heating layer main body 3b, which is used to provide heat, improve the comfort of the foot and promote the slow release effect of the drug; the heating layer main body 3b is provided with a second Velcro female face 3a1 / 3a2, which is used to quickly connect and detach the heating layer main body 3b.

[0035] Among them,

[0036] When the foot bottom needs to be medicated, the cloth layer body 1c and the medicine layer body 2b are attached, and the first magic tape male surface 1b1 / 1b2 is connected to the first magic tape female surface 2a1 / 2a2. After the medicine of the medicine layer body 2b penetrates to the cloth layer body 1c and is hydrolyzed, the skin surface is medicated. At the same time, after the medicine of the medicine layer body 2b penetrates to the color-changing layer body 2c, the different contents of the medicine contact the PH-sensitive color-changing material to cause the PH-sensitive color-changing material to display different colors, so that the user can accurately, conveniently and in real time judge whether the foot warming paste medicine is used up, thereby avoiding waste of the medicine.

[0037] When the foot bottom needs to be heated, the cloth layer body 1c and the heating layer body 3b are attached, and the first magic tape male surface 1b1 / 1b2 is connected to the second magic tape female surface 3a1 / 3a2. The heat generated by the heating layer body 3b is transmitted to the cloth layer body 1c and then to the foot, thereby improving the comfort of the foot.

[0038] When the foot bottom needs to be heated and medicated at the same time, the cloth layer body 1c, the medicine layer body 2b and the heating layer body 3b are attached in turn from top to bottom, and the first magic tape male surface 1b1 / 1b2 is connected to the first magic tape female surface 2a1 / 2a2, and the second magic tape male surface 2d1 / 2d2 is connected to the second magic tape female surface 3a1 / 3a2. The heat generated by the heating layer body 3b is transmitted to the medicine layer, thereby accelerating the release of the medicine. Finally, the medicine and the heat are transmitted to the cloth layer, thereby realizing the functions of heating and medicating the foot at the same time.

[0039] Therefore, the cloth layer, the medicine layer and the heating layer are flexibly connected and separated by the magic tape, thereby realizing the integration of the functions of heating and medicating, and the user can use each function flexibly according to the needs. The user can accurately, conveniently and in real time judge whether the medicine is used up through the color-changing layer body 2c.

[0040] Referring to Figure 1 Further, the medicine layer further comprises a medicine permeation layer 2b1, the medicine permeation layer 2b1 is arranged between the cloth layer body 1c and the medicine layer body 2b, the medicine permeation layer 2b1 is attached to the cloth layer body 1c and the medicine layer body 2b, the medicine of the medicine layer penetrates to the cloth layer body 1c through the medicine permeation layer 2b1, and the medicine permeation layer 2b1 plays a role in controlling the release speed of the medicine; and the outer edge of the medicine permeation layer 2b1 and the medicine layer body 2b are bonded by glue, which not only prevents the relative sliding of the medicine layer body 2b and the medicine permeation layer 2b1 during use, but also improves the permeation rate of the medicine.

[0041] Referring to Figure 1As shown, further, the drug layer also comprises a color-changing permeation layer 2b2, which is attached to the main body 2b of the drug layer. The drug in the drug layer permeates downward through the color-changing permeation layer 2b2, which controls the speed of the downward release of the drug. The outer edge of the color-changing permeation layer 2b2 is bonded to the main body 2b of the drug layer, which not only prevents the color-changing permeation layer 2b2 from sliding relative to the main body 2b of the drug layer during use, but also improves the permeability of the drug. The color-changing permeation layer 2b2 is located on the side of the main body 2b of the drug layer relative to the drug permeation layer 2b1, so that the drug can naturally permeate downward to the color-changing permeation layer 2b2 by gravity.

[0042] Referring to Figure 1 As shown, further, the drug layer also comprises a color-changing permeation layer 2b2, which is attached to the main body 2b of the drug layer. The drug in the drug layer permeates downward through the color-changing permeation layer 2b2, which controls the speed of the downward release of the drug. The outer edge of the color-changing permeation layer 2b2 is bonded to the main body 2b of the drug layer, which not only prevents the color-changing permeation layer 2b2 from sliding relative to the main body 2b of the drug layer during use, but also improves the permeability of the drug. The color-changing permeation layer 2b2 is located on the side of the main body 2b of the drug layer relative to the drug permeation layer 2b1, so that the drug can naturally permeate downward to the color-changing permeation layer 2b2 by gravity.

[0043] Further, the materials of the drug permeation layer 2b1 and the color-changing permeation layer 2b2 can be polyurethane film, which helps to control the release speed of the drug gel and has good permeability and transparency.

[0044] Further, the color-changing layer main body 2c is composed of a PH-sensitive material. The PH-sensitive color-changing material can be polyester material (such as polyester fiber) dyed with BTB (bisthiazylbenzidine), which generally does not absorb the drug gel and exhibits obvious color change in different PH environments, making it suitable for monitoring the state of the drug. Specifically, when the amount of drug is large, the PH-sensitive color-changing material shows yellow-orange color; when the amount of drug is small, the PH-sensitive color-changing material shows pink color, which is convenient for users to intuitively determine whether the drug layer needs to be replaced.

[0045] Further, it also comprises a waterproof patch. The waterproof patch is used to attach to the drug layer after the cloth layer main body 1c is removed. If the drug application is halfway through and no longer needed, the user can remove the drug layer and attach the waterproof patch to the surface of the drug layer to prevent the drug gel in the drug layer from continuing to hydrolyze. The waterproof patch can be made of polypropylene (PP) film.

[0046] Referring to Figure 1As shown, further, two said first Velcro male faces 1b1 / 1b2 are respectively located at two ends of said cloth layer body 1c, ensuring that heat and medicine penetrate and transfer from the middle of the cloth layer body 1c; said first Velcro female faces 2a1 / 2a2 are arranged on said medicine permeation layer 2b1, ensuring that the medicine permeation layer 2b1 and the cloth layer body 1c are fully attached, and are located at two ends of said medicine permeation layer 2b1, ensuring that heat and medicine penetrate and transfer from the middle of the medicine permeation layer 2b1; said second Velcro male faces 2d1 / 2d2 are arranged on said color change layer body 2c, ensuring that the color change layer body 2c and the color change permeation layer 2b2 are fully attached, and are located at two ends of said color change layer body 2c, ensuring that heat and medicine penetrate and transfer from the middle of the medicine permeation layer 2b1; said second Velcro female faces 3a1 / 3a2 are located at two ends of said heating layer body 3b, preventing the two second Velcro female faces 3a1 / 3a2 from hindering the user from observing the color change of the color change layer body 2c through the middle of the heating layer body 3b.

[0047] Referring to Figure 1 and Figure 3 As shown, further, said heating layer body 3b is formed by closely arranging a plurality of heating units 3b2 and perspective units 3b1 along a plane, the heating units 3b2 are used to provide heat, and the perspective units 3b1 are composed of transparent materials and are used to observe the color change of the color change layer body 2c through the heating layer body 3b, facilitating the user to observe the remaining amount of medicine by lifting the foot; wherein, a plurality of said heating units 3b2 and a plurality of said perspective units 3b1 distributed along a first direction are arranged alternately, and a plurality of said heating units 3b2 and a plurality of said perspective units 3b1 distributed along a second direction are arranged alternately, in this way, the heat generated by the plurality of heating units 3b2 is uniformly transmitted to the cloth layer.

[0048] Further, the first direction and the second direction are two directions perpendicular to each other.

[0049] Further, said heating units 3b2 are arranged in a protruding manner, and said perspective units 3b1 are arranged in a recessed manner, the heating units 3b2 and the perspective units 3b1 together form a concave-convex structure on the surface of the heating layer body 3b, which can effectively stimulate the acupoints of the sole when the user is walking, improve the comfort of the sole, and realize the massage function.

[0050] Further, the heating units 3b2 contain heating particles, which can be made of nickel-chromium alloy, iron powder, sodium-based salt particles, etc., and can immediately generate heat after being exposed to air and moisture after the package is opened.

[0051] Further, adjacent said heating units 3b2 and said perspective units 3b1 are connected by needle and thread sewing, which not only improves the structural strength of the heating layer body 3b, but also improves the comfort of the sole;

[0052] Furthermore, the needle thread can be made of high-temperature resistant polyester or nylon thread.

[0053] Furthermore, after the drug and gel combine, they permeate. When a large amount of drug gel permeates into the main body 2c of the color-changing layer, the thin layer of pH-sensitive color-changing material in the main body 2c comes into full contact with the neutral or slightly acidic drug gel, turning orange-yellow. As the drug is consumed, only a thin layer of drug gel remains on the surface of the thin layer of pH-sensitive color-changing material. At this point, moisture from the air and secreted from the feet comes into contact with the drug gel, causing the gel (polylactic acid-glycolic acid) to hydrolyze and produce acidic substances (such as lactic acid). These substances come into contact with diazoxide (BTB) in the thin layer of pH-sensitive color-changing material, turning it pink. Therefore, users can judge the remaining amount of drug gel based on the color change.

[0054] Furthermore, the main body of the drug layer 2b can be made of polyvinyl chloride (PVC), which is transparent and has good chemical stability and corrosion resistance, making it suitable for storing drug gels.

[0055] Reference Figure 2 As shown, the fabric body 1c is further provided with a pair of elastic bands 1a1 / 1a2. The elastic bands 1a1 / 1a2 and the first Velcro face 1b1 / 1b2 are located on opposite sides of the fabric body 1c. The elastic bands 1a1 / 1a2 can be used to fix the fabric body 1c to the sole of the foot. One elastic band 1a1 is located at one end of the fabric body 1c, corresponding to the toe; the other elastic band 1a2 is located in the middle of the fabric body 1c, corresponding to the middle of the foot.

[0056] Furthermore, the elastic bands 1a1 / 1a2 are both connected to the main fabric layer 1c by needle and thread stitching.

[0057] Furthermore, the color-changing layer body 2c and the color-changing permeation layer 2b2 can also be connected by stitching, the color-changing permeation layer 2b2 and the drug layer body 2b can also be connected by stitching, and the drug layer body 2b and the drug permeation layer 2b1 can also be connected by stitching.

[0058] Furthermore, the back of the first Velcro male side 1b1 / 1b2 is glued to the fabric body 1c.

[0059] Furthermore, the back side of the first hook and loop fastener female side 2a1 / 2a2 is glued to the drug penetration layer 2b1, and the back side of the second hook and loop fastener male side 2d1 / 2d2 is glued to the color-changing penetration layer 2b2.

[0060] Furthermore, the back of the second Velcro mother side 3a1 / 3a2 is glued to the heating layer body 3b.

[0061] The working principle of the color-changing foot warming patch with drug slow-release function is:

[0062] If heating is needed, the two second magic tape female surfaces 3a1 / 3a2 of the heating layer main body 3b are respectively attached to the two first magic tape male surfaces 1b1 / 1b2 of the cloth layer main body 1c, so that the heating layer is attached to the cloth layer, then the foot warming patch is fixed on the sole through the elastic bands 1a1 / 1a2, then the package of the heating layer is torn, and the heating process starts when the heating particles contact air; if drug application is needed, the two first magic tape female surfaces 2a1 / 2a2 of the drug permeation layer 2b1 are respectively attached to the two first magic tape male surfaces 1b1 / 1b2 of the cloth layer main body 1c, so that the drug layer is attached to the cloth layer, then the foot warming patch is fixed on the sole through the elastic bands 1a1 / 1a2, then the drug gel of the drug layer is respectively permeated to the cloth layer and the color-changing layer main body 2c, the drug gel contacts the skin surface to release the drug on the cloth layer, and the drug application to the sole starts; on the color-changing layer main body 2c, a large amount of drug gel contacts the PH-sensitive color-changing material, at this time, the color-changing layer main body 2c turns into yellow-orange, along with, the drug gel of the drug layer main body 2b gradually becomes less, a small amount of drug gel is permeated to the color-changing layer main body 2c, at this time, the color-changing layer main body 2c turns into pink, prompting the user that the drug is about to be used up, if heating and drug application are needed at the same time, the two second magic tape female surfaces 3a1 / 3a2 of the heating layer main body 3b are respectively attached to the two second magic tape male surfaces 2d1 / 2d2 of the color-changing layer main body 2c, then the two first magic tape female surfaces 2a1 / 2a2 of the drug permeation layer 2b1 are respectively attached to the two first magic tape male surfaces 1b1 / 1b2 of the cloth layer main body 1c, after the drug layer, the cloth layer and the heating layer are attached, the package of the heating layer is torn, and the heating and drug application start, finally, the user lifts the sole, observes the color change of the color-changing layer main body 2c through the perspective unit 3b1, and knows the remaining amount of the drug in time.

[0063] Obviously, the above embodiments are only examples for clearly illustrating, and are not intended to limit the embodiments. For those skilled in the field, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A color-changing foot warmer patch having a drug release function, characterized in that, The application relates to a multi-layered medicine patch, which comprises a cloth layer, a medicine layer and a heating layer. The cloth layer comprises a cloth layer body provided with a first Velcro male face. The medicine layer comprises a medicine layer body and a color-changing layer body attached to the medicine layer body, the color-changing layer body is composed of a PH-sensitive material, one side of the medicine layer body is provided with a first Velcro female face, and one side of the color-changing layer body is provided with a second Velcro male face. The heating layer comprises a heating layer body provided with a second Velcro female face. The cloth layer body and the medicine layer body are attached, and the first Velcro male face is connected to the first Velcro female face. The cloth layer body and the heating layer body are attached, and the first Velcro male face is connected to the second Velcro female face. The cloth layer body, the medicine layer body and the heating layer body are sequentially attached from top to bottom, and the first Velcro male face is connected to the first Velcro female face, and the second Velcro male face is connected to the second Velcro female face.

2. The color-changing foot warmer patch with a drug slow-release function according to claim 1, characterized in that, The medicine layer further comprises a medicine permeation layer arranged between the cloth layer body and the medicine layer body, and the medicine permeation layer is attached to the cloth layer body and the medicine layer body.

3. The color-changing foot warmer patch with a drug slow-release function according to claim 2, characterized in that, The medicine layer further comprises a color-changing permeation layer arranged between the medicine layer body and the color-changing layer body, and the color-changing permeation layer is attached to the medicine layer body and the color-changing layer body.

4. The color-changing foot warmer patch with a drug slow-release function according to claim 3, characterized in that, The color-changing permeation layer is attached to the color-changing layer body and the medicine layer body at the outer edges of the opposite sides.

5. The color-changing foot warmer patch with a drug release function according to claim 4, characterized in that, The outer edge of the medicine permeation layer is attached to the medicine layer body.

6. The color-changing foot warmer patch with a drug slow-release function according to claim 3, characterized in that, The first Velcro male face is located at the two ends of the cloth layer body, the first Velcro female face is arranged on the medicine permeation layer and located at the two ends of the medicine permeation layer, the second Velcro male face is arranged on the color-changing layer body and located at the two ends of the color-changing layer body, and the second Velcro female face is located at the two ends of the heating layer body.

7. The color-changing foot warmer patch with a drug slow-release function according to claim 1, characterized in that, The heating layer body is composed of a plurality of heating units and perspective units arranged in a plane, a plurality of the heating units and a plurality of the perspective units distributed along a first direction are alternately arranged, and a plurality of the heating units and a plurality of the perspective units distributed along a second direction are alternately arranged.

8. The color-changing foot warmer patch with a drug release function according to claim 7, characterized in that, The heating unit is arranged in a convex shape, and the perspective unit is arranged in a concave shape.

9. The color-changing foot warmer patch with a drug release function according to claim 7, characterized in that, The adjacent heating unit and the perspective unit are connected by needle sewing.

10. The color-changing foot warmer patch with a drug slow-release function according to claim 1, characterized in that, The cloth layer body is further provided with a plurality of pairs of elastic bands, and the elastic bands and the first Velcro male face are located at the opposite sides of the cloth layer body.

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