Functional dressing applied after photodynamic therapy

Abstract

The utility model belongs to the technical field of medical care, and particularly relates to a functional dressing applied after photodynamic therapy, which comprises an application body, and the application body comprises a waterproof layer, a light shielding layer, a sealing and bonding layer and an antibacterial layer. The patch is adhered to the affected part of the skin through the sealing adhesive layer, the waterproof layer keeps the internal environment dry and stable, the light shielding layer can block the stimulation of external light to the damaged skin, the antibacterial layer can effectively inhibit the growth of bacteria, and the hydrogel cooling composite film layer has excellent water absorption and water retention performance. The hydrogel cooling composite film layer can rapidly absorb heat on the skin surface and take away the heat through the evaporation effect of water, so that rapid cooling is achieved, the cooling mode is high in speed and long in duration time, the wound repairing layer can stimulate proliferation and differentiation of cells, the healing process of a wound is accelerated, and the healing effect of the wound is improved. And the components can also provide nutrients and moisture required by wounds and promote skin regeneration.

Description

Technical Field

[0001] The utility model relates to the technical field of medical care, in particular to a functional dressing applied after photodynamic therapy. Background Art

[0002] As a new type of non-invasive medical treatment, photodynamic therapy has been widely used in the treatment of various skin diseases, such as skin cancer, acne, and certain skin inflammations. This treatment method activates photosensitizers through a light source of a specific wavelength to produce oxygen free radicals or singlet oxygen, which then destroys the diseased tissue to achieve a therapeutic effect. However, after photodynamic therapy, the patient's skin often develops inflammatory reactions such as redness, swelling, and pain, and the wound heals slowly, which brings many inconveniences to the patient's recovery;

[0003] In order to relieve skin inflammation after photodynamic therapy and promote wound repair, traditional dressings do have some shortcomings in the application process. First, it is difficult for traditional dressings to achieve the expected cooling and wound repair effects while blocking light, resulting in a slow cooling rate and unable to meet the patient's urgent need to relieve pain. Secondly, the repair effect is not good, especially for deeper or larger wounds. The repair ability of traditional dressings is limited, and it is difficult to achieve rapid and effective healing. Therefore, we proposed a functional dressing for use after photodynamic therapy to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a functional dressing for use after photodynamic therapy, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A functional dressing for post-photodynamic therapy, comprising a dressing body, wherein the dressing body comprises a waterproof layer, a light-proof layer, a sealing and bonding layer, an antibacterial layer, a hydrogel cooling composite film layer, and a wound repairing layer;

[0009] The upper surface of the waterproof layer is bonded with a light-proof layer, the upper surface of the light-proof layer is bonded with a sealing layer, the upper surface of the sealing layer is bonded with an antibacterial layer, the upper surface of the antibacterial layer is bonded with a hydrogel cooling composite film layer, the upper surface of the hydrogel cooling composite film layer is bonded with a wound repairing layer, and a grid structure is provided on the dressing body.

[0010] Furthermore, the hydrogel cooling composite film layer comprises a polyacrylic acid layer, an alginate gel layer, and a cellulose gel layer;

[0011] An alginate gel layer is bonded to the upper surface of the polyacrylic acid layer, and a cellulose gel layer is bonded to the upper surface of the alginate gel layer.

[0012] Furthermore, the wound repairing layer is provided with a plurality of ventilation holes, and the spacings between the plurality of ventilation holes are equal.

[0013] Furthermore, the waterproof layer is made of polyurethane film material, and the light-shielding layer is made of polyester material.

[0014] Furthermore, the sealing and bonding layer is made of a silicone adhesive material, and the antibacterial layer is made of a polyester fiber film material.

[0015] Furthermore, the wound repairing layer is made of high molecular polymer material.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a functional dressing for post-photodynamic therapy, which has the following beneficial effects:

[0018] The utility model is bonded to the affected part of the skin by the sealing adhesive layer, and the waterproof layer is used to prevent external liquid or moisture from penetrating into the inside of the dressing, so as to keep the internal environment dry and stable. The light-proof layer can block the stimulation of external light to the damaged skin, and the antibacterial layer can effectively inhibit the growth of bacteria and protect the damaged skin from infection. The hydrogel cooling composite film layer is composed of a polyacrylic acid layer, an alginate gel layer and a cellulose gel layer, and has excellent water absorption and water retention properties. When the dressing contacts the skin, the hydrogel cooling composite film layer can quickly absorb the heat on the skin surface and take away the heat by the evaporation of water, so as to achieve rapid cooling. This cooling method is not only fast but also long-lasting, and can significantly relieve skin inflammation and pain. The wound repairing layer can stimulate the proliferation and differentiation of cells and accelerate the healing process of the wound. At the same time, they can also provide the wound with the required nutrition and moisture and promote skin regeneration. At the same time, the new functional dressing is specially designed with a grid structure, which is convenient for cutting according to the size and shape of the wound surface, so as to better cover and wrap the entire wound surface and provide more effective protection and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the other side of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the cut structure of the hydrogel cooling composite membrane layer of the utility model.

[0023] In the figure: 1. patch body; 2. waterproof layer; 3. light-proof layer; 4. sealing and bonding layer; 5. antibacterial layer; 6. hydrogel cooling composite film layer; 7. wound repair layer; 8. air vents; 9. polyacrylic acid layer; 10. alginate gel layer; 11. cellulose gel layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a functional dressing for post-photodynamic therapy surgery proposed in one embodiment of the utility model includes a dressing body 1, and the dressing body 1 includes a waterproof layer 2, a light-proof layer 3, a sealing adhesive layer 4, an antibacterial layer 5, a hydrogel cooling composite film layer 6, and a wound repair layer 7;

[0027] The upper surface of the waterproof layer 2 is bonded with a light-proof layer 3, the upper surface of the light-proof layer 3 is bonded with a sealing adhesive layer 4, the upper surface of the sealing adhesive layer 4 is bonded with an antibacterial layer 5, the upper surface of the antibacterial layer 5 is bonded with a hydrogel cooling composite film layer 6, and the upper surface of the hydrogel cooling composite film layer 6 is bonded with a wound repairing layer 7. A grid structure is provided on the dressing body 1, which is bonded to the affected part of the skin through the sealing adhesive layer 4, and the waterproof layer 2 prevents external liquid or moisture from penetrating into the inside of the dressing to keep the internal environment dry and stable. The setting of the light-proof layer 3 can block the stimulation of external light to the damaged skin, and the antibacterial layer 5 can effectively inhibit the growth of bacteria and protect the damaged skin from infection. The hydrogel cooling composite film layer 6 is composed of a polyacrylic acid layer 9, an alginate gel layer 10 and a cellulose gel layer 11, and has excellent The hydrogel cooling composite film layer 6 can quickly absorb the heat on the skin surface when the dressing contacts the skin, and take away the heat by the evaporation of water, so as to achieve rapid cooling. This cooling method is not only fast, but also lasts for a long time, and can significantly relieve skin inflammation and pain. The wound repair layer 7 can stimulate cell proliferation and differentiation, accelerate the healing process of the wound, and at the same time, they can also provide the wound with the required nutrition and moisture, and promote skin regeneration. Through the design of the grid structure, the user can freely cut the dressing according to the needs to make it fit the wound surface, avoid wasting materials and ensure the complete coverage of the dressing. This design not only improves the practicality and applicability of the dressing, but also provides patients with a more personalized, fitting and comfortable treatment experience.

[0028] like Figure 4 As shown, in some embodiments, the hydrogel cooling composite film layer 6 includes a polyacrylic acid layer 9, an alginate gel layer 10, and a cellulose gel layer 11;

[0029] The upper surface of the polyacrylic acid layer 9 is bonded with an alginate gel layer 10, and the upper surface of the alginate gel layer 10 is bonded with a cellulose gel layer 11, which not only has the functions of rapid cooling, moisturizing and promoting wound healing, but also can improve the comfort and safety of patients.

[0030] like Figure 3 As shown, in some embodiments, a plurality of ventilation holes 8 are provided on the wound repair layer 7, and the spacing between the plurality of ventilation holes 8 is equal. The presence of the ventilation holes 8 makes it difficult for moisture to accumulate inside a functional dressing used after photodynamic therapy, thereby reducing skin discomfort and infection risks caused by moisture.

[0031] like Figure 3As shown, in some embodiments, the waterproof layer 2 is made of a polyurethane film material, and the light-shielding layer 3 is made of a polyester material. The polyurethane film material has excellent durability and stability, can resist daily wear and tear and the influence of the external environment, and maintain its waterproof performance for a long time. The polyester material has good light-shielding properties, can effectively block ultraviolet rays and other harmful light, and reduce light damage to the skin. This is especially important for patients who need to avoid direct sunlight or when using it in outdoor activities.

[0032] like Figure 3 As shown, in some embodiments, the sealing adhesive layer 4 is made of a silicone adhesive material, and the antibacterial layer 5 is made of a polyester fiber film material. The silicone adhesive has excellent adhesion properties, which can ensure that a functional dressing used after photodynamic therapy is tightly attached to the skin and is not easy to fall off. The polyester fiber film material has excellent antibacterial properties and can effectively inhibit the growth and reproduction of bacteria, which helps to reduce the risk of infection, protect the health of the wound, and promote wound healing.

[0033] like Figure 3 As shown, in some embodiments, the wound repair layer 7 is made of a high molecular polymer material, which has good biocompatibility, meaning that it can coexist harmoniously with human tissue and is not prone to triggering immune or rejection reactions. This property enables the wound repair layer 7 to be safely applied to the skin without causing additional irritation or damage to the skin.

[0034] Working principle or structural principle: when in use, it is adhered to the affected part of the skin through the sealing adhesive layer 4, and the waterproof layer 2 prevents external liquid or moisture from penetrating into the inside of the patch to keep the internal environment dry and stable. The light-shielding layer 3 can block the stimulation of external light to the damaged skin, and the antibacterial layer 5 can effectively inhibit the growth of bacteria and protect the damaged skin from infection. The hydrogel cooling composite film layer 6 is composed of a polyacrylic acid layer 9, an alginate gel layer 10 and a cellulose gel layer 11, and has excellent water absorption and water retention properties. When the patch comes into contact with the skin, the hydrogel cooling composite film layer 6 can quickly absorb the heat on the skin surface and pass water The evaporation of the dressing takes away the heat, thereby achieving rapid cooling. This cooling method is not only fast but also lasts for a long time, and can significantly relieve skin inflammation and pain. The wound repair layer 7 can stimulate cell proliferation and differentiation, and accelerate the healing process of the wound. At the same time, they can also provide the wound with the required nutrition and moisture, and promote skin regeneration. Through the design of the grid structure, users can freely cut the dressing according to their needs to fit the wound surface, avoid wasting materials and ensure complete coverage of the dressing. This design not only improves the practicality and applicability of the dressing, but also provides patients with a more personalized, fitting and comfortable treatment experience.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A functional dressing for post-photodynamic therapy, comprising a dressing body (1), characterized in that: The patch body (1) comprises a waterproof layer (2), a light-proof layer (3), a sealing and adhesive layer (4), an antibacterial layer (5), a hydrogel cooling composite film layer (6), and a wound repairing layer (7); The upper surface of the waterproof layer (2) is bonded with a light-shielding layer (3), the upper surface of the light-shielding layer (3) is bonded with a sealing adhesive layer (4), the upper surface of the sealing adhesive layer (4) is bonded with an antibacterial layer (5), the upper surface of the antibacterial layer (5) is bonded with a hydrogel cooling composite film layer (6), the upper surface of the hydrogel cooling composite film layer (6) is bonded with a wound repairing layer (7), and a grid structure is provided on the dressing body (1); The hydrogel cooling composite film layer (6) comprises a polyacrylic acid layer (9), an alginate gel layer (10), and a cellulose gel layer (11); An alginate gel layer (10) is bonded to the upper surface of the polyacrylic acid layer (9), and a cellulose gel layer (11) is bonded to the upper surface of the alginate gel layer (10).

2. The functional dressing for post-photodynamic therapy according to claim 1, characterized in that: The wound repairing layer (7) is provided with a plurality of air holes (8), and the spacings between the plurality of air holes (8) are equal.

3. The functional dressing for post-photodynamic therapy according to claim 1, characterized in that: The waterproof layer (2) is made of a polyurethane film material, and the light-shielding layer (3) is made of a polyester material.

4. The functional dressing for post-photodynamic therapy according to claim 1, characterized in that: The sealing and bonding layer (4) is made of a silicone adhesive material, and the antibacterial layer (5) is made of a polyester fiber film material.

5. The functional dressing for post-photodynamic therapy according to claim 1, characterized in that: The wound repairing layer (7) is made of high molecular polymer material.

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