A medical repair hydrogel dressing with continuous stable temperature control

Abstract

This invention discloses a medical repair hydrogel dressing with continuous and stable temperature control, belonging to the field of medical dressing technology, to solve the core technical problem that existing hydrogel cold compress dressings cannot achieve continuous and stable temperature control. The dressing includes a backing layer, a hydrogel functional layer, and a release protective layer stacked sequentially. The hydrogel functional layer is composed of a gradient temperature-controlled slow-release layer, a cold-storage hydrogel layer, and a skin-friendly repair hydrogel layer stacked sequentially. The edges of the backing layer and the release protective layer are sealed together to form a sealed cavity, within which the hydrogel functional layer is sealed. This invention can achieve long-term stable temperature control, simultaneously meeting the nursing needs for cold compresses and wound repair after minimally invasive phototherapy and cosmetic procedures.

Description

Technical Field

[0001] This utility model belongs to the field of medical dressing technology, specifically relating to a medical repair hydrogel dressing with continuous and stable temperature control. Background Technology

[0002] Minimally invasive phototherapy treatments such as laser cosmetic procedures and IPL skin rejuvenation utilize the photothermal effect to repair and rejuvenate the skin. However, these treatments can cause controllable thermal damage to the skin, often resulting in post-treatment discomfort such as redness, swelling, stinging, and burning sensations. Clinical guidelines published by the Chinese Society of Dermatology and Venereology clearly state that cold compresses are a routine and necessary post-operative care measure for these procedures. They effectively reduce thermal damage to the skin and alleviate pain and discomfort. Currently, widely used hydrogel cold compress dressings typically have a basic structure consisting of a backing layer, a hydrogel cooling layer, and a release liner layer, layered sequentially.

[0003] Existing three-layer hydrogel cooling dressings rely solely on the evaporation of water within the hydrogel's condensation layer for cooling. Lacking a mechanism to regulate the rate of cold release, rapid water evaporation during the initial application leads to a sudden temperature drop, potentially causing frostbite to damaged postoperative skin. Once the water is depleted, the cooling capacity is quickly exhausted, and the dressing temperature rapidly rises back to ambient temperature, failing to achieve sustained and stable temperature control for extended periods. Furthermore, these dressings only provide basic cooling and cannot simultaneously promote wound barrier repair. Therefore, improvements to the existing technology are urgently needed to address the core technical challenge of achieving sustained and stable temperature control in current hydrogel cooling dressings. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a medical repair hydrogel dressing with continuous and stable temperature control, so as to solve the core technical problem that the existing hydrogel cold compress dressings cannot achieve continuous and stable temperature control, and at the same time meet the nursing needs of simultaneous wound repair during the cold compress process after minimally invasive photo-op medical aesthetics.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a medical repair hydrogel dressing with continuous and stable temperature control, comprising a backing layer, a hydrogel functional layer disposed on one side of the backing layer, and a release protective layer disposed on the side of the hydrogel functional layer opposite to the backing layer. The hydrogel functional layer comprises a gradient temperature-controlled slow-release layer, a cold-storage hydrogel layer, and a skin-friendly repair hydrogel layer, which are sequentially stacked from the side near the backing layer to the side near the release protective layer. The edge of the backing layer and the edge of the release protective layer are fixedly connected by a sealing structure to form a sealed encapsulation cavity. The hydrogel functional layer is completely sealed and encapsulated inside the sealed encapsulation cavity.

[0006] Furthermore, the cold storage hydrogel layer has a partitioned lattice structure, comprising multiple spaced cold storage micro-units, with flexible bending gaps between adjacent cold storage micro-units, and the thickness of the gradient temperature-controlled slow-release layer is less than the thickness of the cold storage hydrogel layer.

[0007] Preferably, the cold storage micro-units are arranged in a uniform matrix.

[0008] Furthermore, the cold-storage hydrogel layer is a hydrogel matrix layer doped with phase change temperature-controlled microcapsules, and the gradient temperature-controlled sustained-release layer is a hydrogel matrix layer doped with a cold-release regulator.

[0009] Furthermore, the inner surface of the skin-friendly repair hydrogel layer is a smooth and continuous skin-friendly contact surface, and the skin-friendly repair hydrogel layer and the release protective layer are peelable and bonded together.

[0010] Preferably, the skin-friendly repair hydrogel layer is a self-adhesive medical hydrogel layer carrying repair active ingredients.

[0011] Furthermore, the backing layer includes a breathable substrate layer and a sealing film layer that are integrally composited. The sealing film layer is located inside the backing layer, and the inner surface of the sealing film layer is bonded and fixed to the outer surface of the gradient temperature-controlled slow-release layer.

[0012] Preferably, ear-shaped fasteners are fixedly provided at both ends of the backing layer.

[0013] Furthermore, the sealing structure is a hot-pressed sealing edge that is continuously arranged around the outer periphery of the hydrogel functional layer.

[0014] This invention discloses a medical repair hydrogel dressing with continuous and stable temperature control. Its core lies in achieving gradient slow release of cold energy and long-term stable temperature control through a three-layer composite hydrogel functional layer and a fully sealed encapsulated cavity structure. Compared to existing technologies, this invention has significant advantages: the combination of the gradient temperature-controlled slow-release layer and the cold-storing hydrogel layer regulates the rate of cold energy release, avoiding the risk of frostbite due to a sudden drop in temperature at the initial application stage, while extending the duration of cold compress temperature control and solving the problem of rapid depletion of cold energy and rapid temperature rebound in existing dressings; the fully sealed encapsulated cavity locks in the moisture and active ingredients within the hydrogel, preventing moisture loss and leakage, and extending the product's storage period and usage time; the skin-friendly repair hydrogel layer can repair the wound barrier while applying cold compresses, enriching the dressing's nursing functions; the partitioned, dot-matrix cold-storing layer structure improves the dressing's flexibility, allowing it to closely conform to irregular skin surfaces such as the face and neck, ensuring uniform cold compresses. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall assembly three-dimensional structure of the continuously and stably temperature-controlled medical repair hydrogel dressing described in this embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the medical repair hydrogel dressing with continuous and stable temperature control described in an embodiment of this utility model;

[0017] Figure 3 This is a three-dimensional exploded view of the continuously and stably temperature-controlled medical repair hydrogel dressing described in this embodiment of the present invention.

[0018] The labels in the attached diagram are as follows:

[0019] 1. Backing layer; 11. Breathable substrate layer; 12. Sealing film layer; 2. Hydrogel functional layer; 21. Gradient temperature-controlled slow-release layer; 22. Cold storage hydrogel layer; 221. Cold storage micro-unit; 222. Flexible bending gap; 23. Skin-friendly repair hydrogel layer; 3. Release protective layer; 4. Sealing structure; 5. Ear patch fixing component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Existing hydrogel cooling dressings used in clinical applications rely solely on the evaporation of water from a single layer of hydrogel to achieve cooling. This results in uncontrollable cold release and an inability to achieve a continuous and stable cooling effect. Furthermore, their limited functionality fails to meet the comprehensive nursing needs following minimally invasive phototherapy and cosmetic procedures. Therefore, to address these issues, this invention provides a medical repair hydrogel dressing with continuous and stable temperature control, such as… Figures 1 to 3As shown, it includes a backing layer 1, a hydrogel functional layer 2 disposed on one side of the backing layer 1, and a release protective layer 3 disposed on the side of the hydrogel functional layer 2 away from the backing layer 1. The hydrogel functional layer 2 includes a gradient temperature-controlled slow-release layer 21, a cold storage hydrogel layer 22, and a skin-friendly repair hydrogel layer 23, which are stacked sequentially from the side near the backing layer 1 to the side near the release protective layer 3. The edge of the backing layer 1 and the edge of the release protective layer 3 are fixedly connected by a sealing structure 4 to form a sealed encapsulation cavity. The hydrogel functional layer 2 is completely sealed inside the sealed encapsulation cavity.

[0023] In this embodiment, the "inner side" refers to the side of the dressing closest to the skin during application, and the "outer side" refers to the side of the dressing furthest from the skin during application. This consistent directional definition is maintained throughout the document to avoid ambiguity. Specifically, the backing layer 1 is the outer support structure of the dressing, used to isolate the external environment from the hydrogel functional layer 2, reducing the impact of the external environment on the dressing's cooling capacity. The hydrogel functional layer 2 is the core functional structure of the dressing, playing a crucial role in temperature control and wound repair. The release protective layer 3 is a protective structure before use, protecting the skin-friendly surface of the skin-friendly repair hydrogel layer 23 from contamination. It can be directly peeled off during use, making operation convenient. The sealing structure 4 completely seals the edges of the backing layer 1 and the release protective layer 3, forming a sealed cavity that completely encloses the hydrogel functional layer 2, preventing the loss of moisture and active ingredients within the hydrogel during storage and use. It also isolates external air, preventing rapid loss of cooling capacity through air convection, providing a structural basis for long-term stable temperature control. The three-layer composite hydrogel functional layer 2 regulates the cold release rate of the cold storage hydrogel layer 22 through the gradient temperature control slow release layer 21, avoiding the sudden drop in temperature caused by rapid cold release, and extending the cold release time to achieve continuous and stable cold compress temperature control. The skin-friendly repair hydrogel layer 23 directly contacts the skin, and can achieve wound repair while applying cold compress.

[0024] The above-mentioned technical solution in this embodiment fundamentally solves the core problems of uncontrollable cold release and inability to maintain stable temperature control in existing dressings by combining a sealed encapsulation cavity with a three-layer composite hydrogel functional layer. At the same time, the sealed structure prevents moisture loss and leakage, and the skin-friendly repair hydrogel layer enables simultaneous cold compress and repair, which can fully meet the nursing needs after minimally invasive photo-opal medical aesthetic procedures.

[0025] The present invention further proposes that the cold storage hydrogel layer 22 has a partitioned lattice structure, the cold storage hydrogel layer 22 includes a plurality of spaced cold storage micro-units 221, a flexible bending gap 222 is provided between adjacent cold storage micro-units 221, and the thickness of the gradient temperature control slow release layer 21 is less than the thickness of the cold storage hydrogel layer 22.

[0026] The partitioned, lattice-structured cold-storage hydrogel layer 22 is divided into multiple independent cold-storage units by spaced-apart cold-storage micro-units 221. The flexible bending gaps 222 between adjacent units provide bending allowance for the dressing, reducing the overall bending rigidity of the dressing and allowing it to better fit irregular skin surfaces such as the face, around the eyes, and neck. The gradient temperature-controlled slow-release layer 21 is thinner than the cold-storage hydrogel layer 22, ensuring that the cold-storage hydrogel layer 22 has sufficient cold storage capacity. At the same time, the gradient temperature-controlled slow-release layer 21 achieves stable and slow release of cold energy, preventing rapid loss of cold energy.

[0027] As one specific implementation, the cold storage micro-unit 221 can adopt a rounded rectangular structure to avoid damage to the dressing structure caused by sharp corners during bending. The flexible bending gap 222 is evenly distributed along the outer periphery of the cold storage micro-unit 221 to ensure consistent bending performance of the dressing in all directions and eliminate bending dead angles. As an alternative embodiment, those skilled in the art can also set the cold storage micro-unit 221 into other regular shapes such as circles or hexagons according to the actual application site requirements. The flexible bending gap 222 can also be adjusted to a structure of unequal width according to bending requirements to adapt to the bending requirements of specific parts.

[0028] The above structure can effectively improve the fit of the dressing, avoid the lifting and bulging of the dressing during the application process, ensure the close contact between the dressing and the skin, and achieve uniform cold compress on the entire wound surface. At the same time, the gradient temperature-controlled slow-release layer and the cold-storing hydrogel layer with matching thickness can further optimize the cold release effect, prolong the duration of stable temperature control, and improve the safety and effectiveness of cold compress care.

[0029] Preferably, the cold storage micro-units 221 are arranged in a matrix.

[0030] Among them, the matrix-style uniformly arranged cold storage micro-units 221 can make the cold storage capacity evenly distributed throughout the entire effective area of ​​the dressing, avoiding the situation of excessive or insufficient local cold capacity, ensuring the uniformity of the cold dressing temperature of the entire wound surface. At the same time, the uniformly arranged structure can make the bending performance of each area of ​​the dressing consistent, improving the adaptability and comfort of the dressing.

[0031] As a specific implementation method, the cold storage micro-units 221 are arranged in a matrix with row and column alignment. The centers of the cold storage micro-units 221 in two adjacent rows are aligned, and the flexible bending gaps 222 form a continuous bending channel with cross-shaped bends, so that the dressing can be smoothly bent in the horizontal, vertical and diagonal directions without areas with concentrated bending resistance.

[0032] The uniform matrix arrangement structure ensures the uniformity of the dressing's cold compress temperature, preventing localized temperature abnormalities from damaging the skin. It also improves the smoothness of the dressing's bending, further optimizing the application effect and ensuring uniform coverage of the cold compress.

[0033] The present invention further proposes that the cold storage hydrogel layer 22 is a hydrogel matrix layer doped with phase change temperature control microcapsules, and the gradient temperature control slow release layer 21 is a hydrogel matrix layer doped with a cold release regulator.

[0034] Among them, phase change temperature-controlled microcapsules are commonly used phase change energy storage materials in existing technologies. They can undergo solid-liquid phase change within a specific temperature range to store or release cold energy, keeping the temperature of the dressing within a stable range and avoiding sudden temperature rises and falls. The cold energy slow-release regulator can regulate the thermal conductivity of the gradient temperature-controlled slow-release layer 21, thereby regulating the rate at which cold energy is transferred from the cold storage hydrogel layer 22 to the skin side, achieving uniform slow release of cold energy, and further improving the stability of temperature control.

[0035] As one specific implementation method, the phase change temperature range of the phase change temperature-controlled microcapsule is set to 8-15℃, matching the suitable temperature range for post-operative cold compresses in clinical medical aesthetics. Within this temperature range, it can continuously release cold energy, ensuring the cold compress temperature remains stable within the clinically appropriate range, avoiding frostbite due to excessively low temperatures or ineffective cold compresses due to excessively high temperatures. As an alternative embodiment, those skilled in the art can also adjust the phase change temperature range and dosage of the phase change temperature-controlled microcapsule, as well as the type and dosage of the cold energy slow-release regulator, according to different clinical cold compress needs, to adapt to different temperature control durations and temperature requirements.

[0036] The aforementioned matrix layer structure achieves stable storage and release of cold energy through phase change temperature-controlled microcapsules and precise control of the cold energy transfer rate through a cold energy slow-release regulator. The combination of the two can achieve continuous and stable temperature control of the dressing for a long time, solving the problems of uncontrollable cold energy release and short temperature control duration of existing dressings from the material level, and greatly improving the effectiveness and safety of cold compress care.

[0037] The present invention further proposes that the inner surface of the skin-friendly repair hydrogel layer 23 is a flat and continuous skin-friendly contact surface, and the skin-friendly repair hydrogel layer 23 and the release protective layer 3 are peelable and bonded together.

[0038] The smooth and continuous skin-friendly contact surface ensures that the skin-friendly repair hydrogel layer 23 fully adheres to the skin wound without any protrusions or depressions, avoiding poor local adhesion that could affect the cold compress effect and repair function. The peelable adhesion connection method allows the release protective layer 3 to be quickly peeled off before use, making the operation convenient and without damaging the structure and performance of the skin-friendly repair hydrogel layer 23.

[0039] As one specific implementation, the release protective layer 3 uses medical-grade release paper or release film, and its adhesion and peeling force with the skin-friendly repair hydrogel layer 23 are controlled within an appropriate range. This ensures that it will not fall off on its own during storage and can be easily peeled off during use without leaving any adhesive residue or damaging the hydrogel layer structure. As an alternative embodiment, those skilled in the art can also set the release protective layer 3 to an easy-tear structure to further improve the convenience of the peeling operation.

[0040] The smooth, continuous, skin-friendly contact surface and peelable connection structure ensure a close fit between the dressing and the skin, enhancing the effects of cold compresses and repair. At the same time, it simplifies the operation process, improves ease of use, and meets the needs of both clinical and home care.

[0041] Preferably, the skin-friendly repair hydrogel layer 23 is a self-adhesive medical hydrogel layer carrying repair active ingredients.

[0042] The self-adhesive medical hydrogel layer has moderate self-adhesion and can be directly adhered to the skin surface without the need for additional fixation structures. It is not easy to shift after application. At the same time, the hydrogel material has good biocompatibility and will not irritate the damaged skin after surgery. The repair active ingredients it contains can be slowly released during the cold compress process, acting on the skin wound to repair the wound barrier and simultaneously complete the cold compress and repair care.

[0043] As a specific implementation method, the active repair ingredients can be clinically commonly used skin repair ingredients such as ceramides, sodium hyaluronate, and panthenol. These ingredients have good biocompatibility and wound repair effects, which can effectively relieve postoperative skin redness and discomfort and promote skin barrier repair.

[0044] The self-adhesive medical hydrogel layer containing repairing active ingredients can simultaneously achieve stable cold compresses and wound repair care, solving the problem of the single function of existing dressings. At the same time, the self-adhesive design can improve the stability of the dressing, eliminating the need for additional fixation, making it convenient to use. It has good biocompatibility and can be directly applied to postoperative broken skin wounds, ensuring high safety.

[0045] The present invention further proposes that the backing layer 1 includes a breathable substrate layer 11 and a sealing film layer 12 integrally composited. The sealing film layer 12 is located on the inner side of the backing layer 1, and the inner surface of the sealing film layer 12 is bonded and fixed to the outer surface of the gradient temperature control slow-release layer 21.

[0046] Among them, the breathable substrate layer 11 is the outer layer structure of the backing layer 1, which has good breathability and can avoid skin stuffiness and discomfort during the application process, thus improving the comfort of use; the sealing film layer 12 is the inner layer structure of the backing layer 1, which has good sealing performance and can be used with the release protective layer 3 to form a sealed encapsulation cavity, preventing the loss of moisture and cold energy in the hydrogel through the backing layer 1, while also stabilizing and fixing the gradient temperature control slow release layer 21 to ensure the stability of the interlayer structure.

[0047] As a specific implementation method, the breathable substrate layer 11 can be made of medical non-woven fabric, which has good breathability, flexibility and support. The sealing film layer 12 can be made of medical-grade PE sealing film, which is combined with the breathable substrate layer 11 through a thermal composite process, resulting in a stable structure and good sealing performance.

[0048] The composite backing layer combines breathability and sealing, which can prevent skin suffocation and discomfort, improve the comfort of use, and effectively lock in cold and moisture, preventing the loss of cold and moisture through the backing layer, further extending the temperature control time and improving the storage stability and use effect of the dressing.

[0049] Preferably, the present invention provides that ear-shaped fasteners 5 are fixedly provided at both ends of the backing layer 1.

[0050] Among them, the ear patch fixing piece 5 can fix the dressing to the user's ear when it is applied to the face, further improving the fixing effect of the dressing, preventing the dressing from shifting or falling off during the application process, and ensuring the continuous cold compress and repair effect. It is especially suitable for scenarios with large-area cold compresses on the face.

[0051] In one specific implementation, the earplug fixing component 5 and the breathable substrate layer 11 of the backing layer 1 are manufactured using an integral molding process, resulting in a stable structure without connecting gaps. A self-adhesive layer can be provided on the earplug fixing component 5 for easy fixation to the ear, ensuring a stable fixation effect. Alternatively, those skilled in the art can also configure the earplug fixing component 5 as an adjustable-length elastic structure to accommodate different user head circumferences, improving wearing comfort and fit.

[0052] The ear patch fixation feature further enhances the stability of the dressing, preventing displacement or detachment during application and ensuring the continuous application of cold compresses and repair care. It is especially suitable for facial applications, improving ease of use and stability.

[0053] The present invention further proposes that the sealing structure 4 is a hot-pressed sealing edge that is continuously arranged around the outer periphery of the hydrogel functional layer 2.

[0054] Among them, the hot-press sealing edge, which is continuously set around the whole circumference, melts and bonds the edge of the backing layer 1 and the edge of the release protective layer 3 into one piece through the hot-press process. It has excellent sealing performance, no leakage gaps, and can form a completely sealed encapsulation cavity, effectively locking in the moisture, cold energy and active ingredients of the hydrogel functional layer 2, avoiding loss and leakage during storage and use. At the same time, the hot-press sealing process is mature, easy to prepare, and suitable for large-scale production.

[0055] As a specific implementation method, the width of the hot-pressed sealing edge is uniform, and the hot-pressing temperature and pressure match the material characteristics of the backing layer and the release liner, ensuring that the adhesion strength of the sealing edge meets the standard, without any incomplete or leaky sealing, thus ensuring the airtightness of the cavity. As an alternative embodiment, those skilled in the art can also use other sealing methods such as ultrasonic sealing or adhesive sealing, as long as a continuous sealing effect throughout the circumference can be achieved.

[0056] The continuous hot-pressed sealing structure throughout the circumference achieves excellent sealing performance, ensuring the airtightness of the covered cavity, effectively locking in moisture, cold energy and active ingredients, extending the storage period and temperature control time of the dressing, while preventing leakage during use, and improving the safety and stability of the dressing.

[0057] The medical repair hydrogel dressing with continuous and stable temperature control provided in this embodiment works on the following principle: Before use, the dressing forms a sealed cavity through a full-circumference heat-sealing structure, with the hydrogel functional layer completely sealed within the cavity to ensure that moisture, cold energy, and active ingredients are not lost during storage. During use, the dressing is pre-cooled to allow the phase-change temperature-controlled microcapsules within the cold-storing hydrogel layer to store sufficient cold energy. Then, the release protective layer is peeled off, and the skin-friendly contact surface of the skin-friendly repair hydrogel layer is applied to the target skin area, secured with earplugs. After application, the cold-storing hydrogel layer continuously releases cold energy, and the gradient temperature-controlled slow-release layer regulates the rate of cold energy transfer to the skin side, ensuring a uniform and slow release of cold energy and preventing sudden temperature drops. Simultaneously, the phase-change temperature-controlled microcapsules maintain temperature stability through a phase-change process, achieving long-term continuous steady-state cold compress. During the cold compress process, the repair active ingredients within the skin-friendly repair hydrogel layer are slowly released, acting on the skin wound and simultaneously repairing the wound barrier.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A medical repair hydrogel dressing with sustained stable temperature control, comprising a backing layer (1), a hydrogel functional layer (2) arranged on one side of the backing layer (1), and a release protective layer (3) arranged on the side of the hydrogel functional layer (2) away from the backing layer (1), characterized in that, The hydrogel functional layer (2) includes a gradient temperature-controlled slow-release layer (21), a cold storage hydrogel layer (22), and a skin-friendly repair hydrogel layer (23) stacked sequentially from the side near the backing layer (1) to the side near the release protection layer (3). The edge of the backing layer (1) and the edge of the release protection layer (3) are fixedly connected by a sealing structure (4) to form a sealed encapsulation cavity. The hydrogel functional layer (2) is completely sealed inside the sealed encapsulation cavity.

2. The medical repair hydrogel dressing with continuously stable temperature control according to claim 1, characterized in that, The cold storage hydrogel layer (22) has a partitioned lattice structure. The cold storage hydrogel layer (22) includes multiple spaced cold storage micro-units (221). A flexible bending gap (222) is provided between adjacent cold storage micro-units (221). The thickness of the gradient temperature control slow release layer (21) is less than the thickness of the cold storage hydrogel layer (22).

3. The medical repair hydrogel dressing with continuously stable temperature control according to claim 2, characterized in that, The cold storage micro-units (221) are arranged in a uniform matrix.

4. The medical repair hydrogel dressing with continuously stable temperature control according to claim 2, characterized in that, The cold storage hydrogel layer (22) is a hydrogel matrix layer doped with phase change temperature control microcapsules, and the gradient temperature control sustained release layer (21) is a hydrogel matrix layer doped with a cold release regulator.

5. The medical repair hydrogel dressing with continuously stable temperature control according to claim 1, characterized in that, The inner surface of the skin-friendly repair hydrogel layer (23) is a smooth and continuous skin-friendly contact surface, and the skin-friendly repair hydrogel layer (23) and the release protective layer (3) are peelable and bonded together.

6. The medical repair hydrogel dressing with continuously stable temperature control according to claim 5, characterized in that, The skin-friendly repair hydrogel layer (23) is a self-adhesive medical hydrogel layer carrying repair active ingredients.

7. The medical repair hydrogel dressing with continuously stable temperature control according to claim 1, characterized in that, The backing layer (1) includes a breathable substrate layer (11) and a sealing film layer (12) that are integrally formed. The sealing film layer (12) is located inside the backing layer (1), and the inner surface of the sealing film layer (12) is bonded and fixed to the outer surface of the gradient temperature control slow-release layer (21).

8. The medical repair hydrogel dressing with continuously stable temperature control according to claim 7, characterized in that, Ear clip fasteners (5) are fixedly provided at both ends of the backing layer (1).

9. The medical repair hydrogel dressing with continuously stable temperature control according to claim 1, characterized in that, The sealing structure (4) is a hot-pressed sealing edge that is continuously arranged around the outer periphery of the hydrogel functional layer (2).

Images