Antipyretic patch
By designing an independent molded hydrogel patch without backing material, it is closely attached to the skin of the human nasal facial skin, and using the anatomical characteristics of the nasal facial veins connected to the intracranial cavernous sinus, the problem of the existing anti-heat patch being small in heat dissipated is solved, resulting in poor cooling effect, and better heat dissipation effect and humidification function.
Patent Information
- Application Number
- CN202421263820.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing anti-heat patches have too small heat dissipation area, resulting in poor cooling effect. Especially in the nasal and facial areas, it is difficult to effectively reduce the intracranial temperature and avoid heat damage to the brain tissue caused by fever.
An independently formed hydrogel patch is designed with high moisture content and is formed using backing material without backing, which is closely attached to the skin of the human nose and facial skin. Through the main through holes and protruding structure, the anatomical characteristics of the nasal facial veins connected to the intracranial cavernous sinus are used to achieve rapid cooling and increase service life through the "rehydration effect".
It achieves better heat dissipation effect, quickly reduces intracranial temperature, avoids heat damage to brain tissue, and humidifies inhaled gas to provide a humid and comfortable breathing microenvironment.
Smart Images
Figure CN222752210U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cooling patch, in particular to a hydrogel patch, and belongs to the technical field of medical devices. Background Art
[0002] Fever of various reasons will significantly affect human metabolism and the functions of organs such as the heart, lungs, and brain. In particular, short-term high brain tissue temperature can also cause varying degrees of damage, especially in children and infants with weak temperature regulation ability. When fever occurs, the human body dissipates heat through convection, radiation, and evaporation. On the other hand, the body's temperature regulation center in the hypothalamus dilates blood vessels, accelerates circulation, sweats, and speeds up breathing, thereby enhancing the heat dissipation function. After decompensation, medication and physical cooling are required.
[0003] Current physical cooling patches are usually applied to the forehead, using the evaporation of water stored in the hydrogel to lower the local skin temperature. Since most cooling patches contain backing materials, the heat dissipation area is only the narrow gap between the backing material and the human forehead skin. The heat dissipation area is too small and the cooling effect is poor.
[0004] The human nose and adjacent facial areas are densely populated with veins, and the nasofacial veins have communicating branches with the intracranial cavernous sinuses and other blood sinuses. When fever occurs, cooling the nasofacial area will be significantly better than cooling the forehead area. Therefore, it is necessary to develop a fever-reducing patch product that can be attached to the skin of the human nose and face and is not covered with backing material. The product can make full use of the anatomical characteristics of the nasofacial veins being connected to the intracranial cavernous sinuses and other blood sinuses to reduce intracranial temperature and avoid thermal damage to brain tissue caused by fever. During fever, the mouth and nose are dry, and the human body's ability to humidify inhaled gas decreases. The ideal fever-reducing patch should be able to humidify the inhaled gas while cooling it down. Summary of the invention
[0005] The utility model aims to provide a cooling patch, which can not only be in close contact with the human nose and the skin around the nose and is not easy to fall off, but also has independent molding, high water content and excellent heat dissipation effect.
[0006] The purpose of the utility model is achieved in this way:
[0007] A fever-reducing patch comprises a sheet-shaped hydrogel body having an inner surface and an outer surface, wherein the hydrogel body is composed of a central part, a left part and a right part. When in use, the inner surface of the hydrogel body is attached to the human facial skin, and the outer surface of the hydrogel body is in contact with the external environment. At least one main through hole is provided on the central part of the hydrogel body to connect at least the nostril area of the human nose with the external environment, and the main through hole passes through the outer surface of the hydrogel body and the inner surface of the hydrogel body. A protrusion facing the columella is provided at the lower edge of the main through hole or adjacent to the main through hole. When the hydrogel body is attached to the surface of the human nose and the facial skin around the nose, the protrusion faces the columella and abuts against the columella, and the left area and the right area of the protrusion are respectively opposite to the nostrils of the nose and do not block the nostrils.
[0008] The hydrogel body is made of natural polymer substances including potassium-sensitive carrageenan, konjac gum, and xanthan gum, or artificially synthesized polymer substances such as polyvinyl alcohol, and has a water content of more than 90%. It is independently formed in an integrated manner. Mint and other substances can be added inside the hydrogel body to assist in cooling and increase comfort. The hydrogel body can be directly injection-molded, cast-molded, etc., and no backing material is required to assist inside or on the surface of the hydrogel body. Compared with the prior art cooling patches that mostly rely on backing materials such as non-woven fabrics for molding, the hydrogel body can be directly attached to human skin after integrated molding, and the exposed area is increased by several times or dozens of times, which is more conducive to cooling down.
[0009] In order to increase the heat dissipation area of the hydrogel body and cool the water vapor exhaled from the nasal cavity before inhaling it into the nasal cavity, the left area and the right area of the protrusion on the hydrogel body are respectively provided with protrusions protruding away from the outer surface of the central part of the hydrogel body.
[0010] Another structure is that two main through holes corresponding to the nostrils are provided in the central part of the hydrogel body, and the protrusion extending from between the two main through holes is opposite to the columella and abuts against the columella, and the two nostrils are connected with the external environment through the two main through holes; the hydrogel body of this structure can be attached to the surface of the human nose and the skin around the nose with the maximum area without affecting the human breathing, and humidifies the inhaled air while reducing fever and temperature, providing a moist and comfortable breathing microenvironment for the human nose.
[0011] In order to increase the surface area of the hydrogel body and improve the cooling effect, the outer surface of the hydrogel body is provided with one or more structures including villi, protrusions, and dimples that can increase the outer surface area of the hydrogel body.
[0012] Furthermore, in order to improve the heat dissipation effect of the hydrogel body, at least one secondary through hole is provided on the hydrogel body, and the secondary through hole penetrates the outer surface and the inner surface of the hydrogel body.
[0013] Since the hydrogel body is relatively smooth, the cooling patch will fall off from the human facial skin if the human body exercises during use. In order to make the hydrogel body closely adhere to the human nose and the area around the nose and not fall off easily, at least one suction cup structure is provided on the inner surface of the hydrogel body. The suction cup structure is a depression formed from the inner surface of the hydrogel body toward the outer surface of the hydrogel body. When the depression is attached to the human facial skin, a cavity is formed. When in use, the cavity is pressed to discharge the gas in the cavity. The depression adsorbs the cooling patch to the surface of the human nose and the facial skin around the nose like a suction cup to keep it effectively fixed.
[0014] In order to make the hydrogel body conform to the shape and closely adhere to the skin surface around the human nose without wrinkling or curling during use, at least one retracted area is provided on the gel body, and the retracted area makes it easy for the central part of the hydrogel body to conform to the nose.
[0015] Furthermore, in order to increase the surface area of the hydrogel body and enhance the heat dissipation effect, the hydrogel body includes a nose area portion and a mouth area portion. The mouth area portion is formed integrally by extending the hydrogel body of the nose area portion downward. When in use, the nose area portion is conformably attached to the human nose skin and the skin around the nose, and the mouth area portion is conformably attached to the human mouth skin and the skin around the mouth.
[0016] In order to facilitate the molding and accommodating of the cooling patch, a shell is also included, and a conformable structure for molding and accommodating the hydrogel body is provided on the inner cavity of the shell.
[0017] The beneficial effects of the utility model are:
[0018] 1. The hydrogel body of the cooling patch of the utility model can be directly molded by injection molding, casting or other one-piece molding, without relying on backing materials such as non-woven fabrics, so that the hydrogel body can fit closely with the skin of the nose and face of the human body, and the heat dissipation and cooling effect of the cooling patch can be increased; the one-piece molding is simple to manufacture and can be designed into various shapes according to needs.
[0019] 2. The human nose and perirhinal veins are densely distributed, such as the nasal veins, ophthalmic veins, and facial veins, which are all concentrated in this area, and the front end of the cavernous sinus is connected with the ophthalmic veins, facial veins, nasal veins, and pterygoid vein plexus. The antipyretic patch of the utility model is closely attached to the surface of the human nose and perirhinal facial skin, and while cooling the facial skin, it can also transport the lower temperature blood to the cavernous sinus area during the blood flow in the nose and perirhinal veins, effectively and quickly reduce the intracranial temperature, and avoid brain damage caused by excessive intracranial temperature. At the same time, it can also humidify the nasal area to provide a moist and comfortable breathing microenvironment for the human nose.
[0020] 3. Larger protrusions are arranged on the left and right areas of the protrusions on the hydrogel body, and they are respectively facing the nostrils of the human nose. Because the temperature of the hydrogel at the protrusions is lower than the temperature of the human body, the water vapor exhaled from the nasal cavity during exhalation is "rehydrated" into fine water droplets on the surface of the hydrogel, and the fine water droplets evaporate into water vapor and are inhaled into the nasal cavity during inhalation, thereby cooling the nasal mucosa and the nasal veins. The "rehydration effect" is used to continuously replenish the moisture of the cooling patch of the utility model, thereby increasing the service life.
[0021] 4. The protruding part of the hydrogel body is directly opposite to the columella, which can play a limiting and guiding effect, so that the hydrogel body can be conformally attached to the surface of the human nose and the skin around the nose, and the left and right side areas of the protruding part are concave and opposite to the nostrils, so that the nostrils are exposed to the outside, and the human breathing activity is not affected when used.
[0022] 5. The hydrogel body is provided with structures including protrusions, dimples and villi to increase the surface area, and a secondary through-hole structure penetrating the hydrogel body to increase the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings which do not limit the present invention are as follows:
[0024] Figure 1A :Distribution of human nose and perirhinal veins (partial display)
[0025] Figure 1B : Schematic diagram of human body wearing in Example 1
[0026] Figure 1C : Front view of the dimple in Example 1
[0027] Figure 1D : A three-dimensional schematic diagram of a dimple in Example 1
[0028] Figure 1E : Cross-sectional view of embodiment 1 with dimples
[0029] Figure 1F : Front view of embodiment 1 with protrusion
[0030] Figure 1G : Schematic diagram of the three-dimensional structure with protrusions in Example 1
[0031] Figure 1H : A three-dimensional schematic diagram of the embodiment 1 with fluff
[0032] Fig. 1I : A three-dimensional schematic diagram of the housing of Example 1
[0033] Figure 1J : Schematic diagram of the cutaway view of the housing of Example 1
[0034] Figure 2A: Front view of embodiment 2 with secondary through hole
[0035] Figure 2B : Cross-sectional view of embodiment 2 with secondary through holes
[0036] Figure 2C : Front view of the suction cup structure of Example 2
[0037] Figure 2D : A cross-sectional view of the suction cup structure of Example 2
[0038] Figure 3A : Front view of embodiment 3
[0039] Figure 3B : Cross-sectional view along the central axis of the main through hole of Example 3
[0040] Figure 3C : Example 3 Cross-sectional view along the central axis of the hydrogel body
[0041] Figure 3D : A front view of another structure of Example 3
[0042] Figure 3E : A cross-sectional view of another structure of Example 3
[0043] Figure 4 : Front view of embodiment 4 DETAILED DESCRIPTION
[0044] Embodiment 1:
[0045] like Figure 1A The figure shows the distribution of nasal and perirhinal veins (partially shown). It can be seen that the nasal and perirhinal veins of the human body are densely distributed, such as the nasal veins, ophthalmic veins, and facial veins are all concentrated in this area, and the front end of the intracranial cavernous sinus is connected with the ophthalmic veins, facial veins, nasal veins, and pterygoid venous plexus; when the human body has a fever, if the nose and the skin of the face around the nose are cooled, the lower temperature blood can not only flow to all parts of the body through the rich venous plexus of the nose and perirhinal area, but also can quickly flow to the cavernous sinus area through the nasal veins, ophthalmic veins, facial veins, etc., effectively and quickly reduce the intracranial temperature, and avoid brain damage caused by excessive intracranial temperature.
[0046] Most of the existing cooling patches are composed of three parts, namely a protective film, a hydrogel body and a backing material. The hydrogel body needs to rely on the backing material for molding and cannot be independently molded. The backing material is mostly made of non-woven fabrics. Due to the presence of the non-woven fabrics, when attached to the surface of the hydrogel body, the heat dissipation and the generation of water vapor are seriously hindered, which affects the cooling effect of the hydrogel body, resulting in the existing cooling and cooling effects of the cooling patches being not obvious. The cooling patch provided by the utility model is independently molded as a whole, does not require the assistance of a backing material, and is directly attached to the human skin, thereby increasing the exposed area by several times or dozens of times, and having a better heat dissipation effect.
[0047] like Figure 1B-1H As shown, a fever-reducing patch includes a sheet-shaped hydrogel body 1 having an inner surface 11 and an outer surface 12. The hydrogel body 1 is composed of a central portion 1c, a left portion 1a and a right portion 1b. The hydrogel body 1 is made by injection molding, casting molding and the like. The hydrogel body 1 is made of natural polymer substances including potassium-sensitive carrageenan, konjac gum, and xanthan gum. Polyvinyl alcohol and the like can also be used. The water content is greater than 90%. Auxiliary substances such as mint, wormwood, and antipyretic drugs can also be added to the hydrogel body 1 to adjust the smell of the hydrogel body 1 and increase the comfort during use. When in use, the inner surface 11 of the hydrogel body 1 is attached to the facial skin of the human body, and the outer surface 12 of the hydrogel body 1 is attached to the facial skin of the human body. In contact with the external environment, a main through hole 10 is provided on the central part 1c of the hydrogel body 1 to expose at least the nostril area of the human nose to the outside, and the main through hole 10 passes through the outer surface 12 of the hydrogel body 1 and the inner surface 11 of the hydrogel body 1. A protrusion 13 is provided on the lower edge of the main through hole 10, which extends toward the central area of the main through hole 10; when the hydrogel body 1 is attached to the surface of the human nose and the skin around the nose, at least the nostril area is exposed to the outside, and the protrusion 13 is directly opposite to and against the columella N1 of the nose, which is convenient for guiding, positioning and fixing the hydrogel body 1 when using the cooling patch, and the left area 13a of the protrusion and the right area 13b of the protrusion are respectively opposite to the nostril N0 of the nose and do not block the nostril N0 ( Figure 1B ), the nostril N0 is fully exposed without affecting the normal breathing of the human body; for the sake of aesthetics and ease of use, the hydrogel body 1 is bilaterally symmetrical along the central axis L, and the edge of the hydrogel body 1 is arc-shaped. The arrows in the drawings of the utility model indicate the direction of the exhaled airflow.
[0048] In order to utilize the "rehydration effect" to enable the cooling patch to be used for a long time and achieve a long-lasting cooling effect, the two sides of the protrusion 13 are respectively provided with a concave protrusion left area 13a and a protrusion right area 13b, the concave protrusion left area 13a and the protrusion right area 13b are respectively opposite to the two nostrils N0 of the human nose, and the protrusion left area 13a and the protrusion right area 13b are respectively provided with a protrusion 131 protruding toward the outer surface 12 of the hydrogel body 1, and the protrusion 13 1 The volume of the hydrogel is increased, so that more water vapor exhaled from the nasal cavity can be contacted and intercepted. Since the temperature of the hydrogel at the protrusion 131 is lower than the temperature of the human body, the saturated water vapor exhaled from the nasal cavity condenses on the surface of the hydrogel here. When inhaling, the external air is humidified and cooled by this part of water before being inhaled into the nasal cavity by the human body. While humidifying and protecting the nasal mucosa, it also cools the blood in the nasal mucosa, and then cools the cavernous sinus in the skull. The humidified air can maintain the function of the mucociliary clearance system of the nasal cavity, trachea, and bronchus.
[0049] In order to increase the surface area of the hydrogel body, i.e., the effective heat dissipation area, and improve the cooling and antipyretic effect of the cooling patch, the outer surface 12 of the hydrogel body 1 is provided with a structure including villi 141, protrusions 142, and dimples 143 that can increase the surface area of the outer surface 12 of the hydrogel body 1; Figure 1C , 1D 1E shows a plurality of dimples 143 on the outer surface 12 of the hydrogel body 1. Figure 1F , 1G The structure of the plurality of protrusions 142 on the outer surface 12 of the hydrogel body 1 is shown. Figure 1H A plurality of villi structures 141 are shown on the outer surface 12 of the hydrogel body 1 .
[0050] During the use of the cooling patch, the hydrogel body 1 needs to be closely attached to the skin surface of the human nose and the facial skin around the nose. Since the human nose is an uneven protruding area with a three-dimensional sense, the flat inner surface 11 of the hydrogel body 1 is prone to wrinkles and warping when attached to the skin surface here, thereby causing a gap between the hydrogel body 1 and the human skin, making the cooling patch easy to fall off and reducing the heat dissipation effect of the cooling patch. In order to avoid this phenomenon, two retraction areas 17 are respectively provided above and below the hydrogel body 1. The lower retraction area 17 makes it easy for the lower part of the central part 1c of the hydrogel body 1 to conformally adhere to the area near the nasolabial groove, and the upper retraction area 17 helps the hydrogel body 1 to adhere to the nose wings on both sides. The retraction area 17 is a local depression formed by the edge part of the hydrogel body 1 retracting toward the central area, so that the hydrogel body is easy to adhere to the uneven nose and facial skin surface.
[0051] In order to facilitate molding and accommodating the cooling patch, a shell 2 is also included. The shell 2 is molded with medical grade materials such as polypropylene. The cooling patch is located in the inner cavity 20 of the shell. Fig. 1I, Figure 1J As shown, the shell cavity 20 is provided with a conformal structure for molding the hydrogel body 1, specifically, a conformal ridge structure 21 for molding the main through hole 10 and a conformal protrusion structure 22 for molding the dimple 143 of the hydrogel body 1 are provided below the central area of the shell cavity 20; during production, the flowing gel can be poured into the shell cavity 20 and can be molded after cooling, thereby reducing production costs and improving production efficiency.
[0052] Embodiment 2:
[0053] like Figures 2A-2D As shown, during the use of the cooling patch, the inner surface 11 of the hydrogel body 1 is in direct contact with the skin surface of the human nose and the facial skin around the nose. The higher temperature on the skin surface is first transferred to the inside of the hydrogel body 1 through the inner surface 11 of the hydrogel body 1. In order to transfer and dissipate the heat on the inner surface and inside of the hydrogel body 1 as quickly as possible to achieve a good cooling effect, at least one secondary through hole 15 is provided on the hydrogel body 1. The secondary through hole 15 penetrates the outer surface 12 of the hydrogel body 1 and the inner surface 11 of the hydrogel body 1. The secondary through hole 15 can also continuously conduct and radiate the heat on the surface of the human skin to the outside, and a heat plume phenomenon will occur to prompt the surrounding air to flow upward along the secondary through hole 15, driving the continuous dissipation of water vapor to increase the cooling capacity. For the sake of aesthetics, the secondary through holes 15 in this embodiment are symmetrically arranged along the central axis and are respectively located on the left side 1a and the right side 1b of the hydrogel body.
[0054] Since the hydrogel body is relatively smooth, if the human body exercises during use, the cooling patch will fall off the human facial skin. In order to make the hydrogel body closely adhere to the human nose and the area around the nose and not fall off easily, an optimization scheme is to provide a plurality of suction cup structures 16 on the inner surface 11 of the hydrogel body 1. The suction cup structure 16 is a depression formed in the direction of the inner surface 11 of the hydrogel body 1 toward the outer surface 12 of the hydrogel body 1. When in use, the suction cup structure on the hydrogel body is attached to the surface of the human nose and the facial skin around the nose to form a cavity. The cavity is pressed to discharge the gas in the cavity. The elastic restoring force of the depression when it rebounds helps to form negative pressure. The depression adsorbs the cooling patch on the skin surface like a suction cup to keep it effectively fixed. For the sake of aesthetics, the suction cup structures 16 in this embodiment are symmetrically arranged along the central axis and are respectively located on the left side 1a and the right side 1b of the hydrogel body.
[0055] Embodiment 3:
[0056] like Figure 3A , 3BAs shown in 3C, two main through holes 10 are provided on the central part 1c of the hydrogel body 1 to expose the nostril area of the human nose to the outside, and the main through holes 10 are respectively opposite to the nostrils. The hydrogel body 1 is provided with villi 141 for increasing the surface area of the hydrogel body. The central part 1c of the hydrogel body 1 is provided with a central convex area away from the outer surface 12 of the hydrogel body 1. The main through hole 10 is located on the upper side of the central convex area. The main through hole 10 passes through the outer surface 12 of the hydrogel body 1 and the inner surface 11 of the hydrogel body 1. A protrusion 13 extending from the middle area of the lower edges of the two main through holes 10 faces and abuts against the columella N1. The two nostrils of the human body are connected to the outside through the two main through holes 10. This structure covers all parts of the human nose except the nostril area. The two main through holes 10 are respectively located on the left area 13a and the right area 13b of the protrusion. The two main through holes 10 correspond to the two nostrils respectively, and do not affect the breathing of the human body. Figure 3A The position distribution of the main through holes 10 is shown from the front. Figure 3B The cross section along the central axis L of the main through hole 10 shows the hydrogel body 1, Figure 3C A cross section along the central axis L of the hydrogel body 1 shows the protrusion 13 .
[0057] like Figure 3D , 3E As shown, another position structure of the main through hole 10 is shown, two main through holes 10 are provided on the central part 1c of the hydrogel body 1 to expose the nostril area of the human nose to the outside, and a central convex area away from the outer surface 12 of the hydrogel body 1 is provided on the central part 1c of the hydrogel body 1, and the main through hole 10 is located at the lower side of the central convex area; Figure 3D The position distribution of the main through holes 10 is shown from the front. Figure 3E The cross section along the central axis L of the main through hole 10 shows the hydrogel body 1, and the protrusion under the position structure of the main through hole is not shown. Figure 3C The middle protrusion 13 has the same function, facing and abutting against the columella N1, so as to facilitate the installation, positioning and fixing of the hydrogel body 1.
[0058] Embodiment 4:
[0059] like Figure 4 As shown, in order to increase the heat dissipation area of the hydrogel body and improve the cooling and temperature reduction effect of the cooling patch, the hydrogel body 1 includes a nasal area portion 1n and a mouth area portion 1m, and the mouth area portion 1m is formed by extending the hydrogel body of the nasal area portion 1n downward. When in use, the nasal area portion 1n is conformally attached to the human nose skin and the skin around the nose, and the mouth area portion 1m is conformally attached to the human mouth skin and the skin around the mouth. The nasal and mouth areas jointly dissipate heat and reduce temperature, and at the same time, the external environment air inhaled into the mouth and nose is humidified, providing a moist and comfortable breathing microenvironment for fever patients.
Claims
1. A cooling patch, comprising a sheet-shaped hydrogel body (1) having an inner surface (11) and an outer surface (12), wherein the hydrogel body (1) is composed of a central portion (1c), a left portion (1a) and a right portion (1b). When in use, the inner surface (11) of the hydrogel body (1) is attached to the human facial skin, and the outer surface (12) of the hydrogel body (1) is in contact with the external environment, characterized in that: At least one main through hole (10) is provided on the central part (1c) of the hydrogel body (1) so that at least the nostril area of the human nose is connected with the external environment. The main through hole (10) passes through the outer surface (12) of the hydrogel body (1) and the inner surface (11) of the hydrogel body (1). A protrusion (13) facing the columella (N1) is provided at the lower edge of the main through hole (10) or adjacent to the main through hole (10). When the hydrogel body (1) is attached to the surface of the human nose and the skin around the nose, the protrusion (13) faces the columella (N1) and abuts against the columella (N1), and the left area (13a) and the right area (13b) of the protrusion are respectively opposite to the nostril (N0) of the nose and do not block the nostril (N0).
2. The cooling patch according to claim 1, characterized in that: The left area (13a) and the right area (13b) of the protrusion on the hydrogel body (1) are respectively provided with protrusions (131) protruding away from the outer surface (12) of the central part (1c) of the hydrogel body (1).
3. The cooling patch according to claim 1, characterized in that: The central portion (1c) of the hydrogel body (1) is provided with two main through holes (10) respectively corresponding to the nostrils (N0); a protruding portion (13) extending from between the two main through holes (10) faces the columella (N1) and abuts against the columella (N1); and the two nostrils (N0) are connected to the external environment through the two main through holes (10).
4. The cooling patch according to claim 1, characterized in that: The outer surface (12) of the hydrogel body (1) is provided with one or more structures including villi (141), protrusions (142), and depressions (143) that can increase the area of the outer surface (12) of the hydrogel body (1).
5. The cooling patch according to claim 1, characterized in that: At least one secondary through hole (15) is provided on the hydrogel body (1), and the secondary through hole (15) penetrates the outer surface (12) of the hydrogel body (1) and the inner surface (11) of the hydrogel body (1).
6. The cooling patch according to claim 1, characterized in that: The inner surface (11) of the hydrogel body (1) is provided with at least one suction cup structure (16), and the suction cup structure (16) is a depression formed on the inner surface (11) of the hydrogel body (1) in the direction of the outer surface (12) of the hydrogel body (1).
7. The cooling patch according to claim 1, characterized in that: At least one retracted area (17) is provided on the hydrogel body (1), and the retracted area (17) facilitates the central part (1c) of the hydrogel body (1) to conform to the nose.
8. The cooling patch according to claim 1, characterized in that: The hydrogel body (1) comprises a nose area portion (1n) and a mouth area portion (1m), wherein the mouth area portion (1m) is formed by extending the hydrogel body of the nose area portion (1n) downwards and forming an integral body. When in use, the nose area portion (1n) conforms to the skin of the nose and the skin around the nose, and the mouth area portion (1m) conforms to the skin of the mouth and the skin around the mouth.
9. The cooling patch according to claim 1, characterized in that: The water content of the hydrogel body (1) is greater than 90%.
10. A cooling patch according to any one of claims 1 to 9, characterized in that: It also comprises a shell (2), wherein an inner cavity (20) of the shell (2) is provided with a conformable structure for forming and accommodating the hydrogel body (1).