A type of alginate medical antibacterial dressing

Abstract

This utility model relates to the field of medical antibacterial dressing technology, and discloses an alginate medical antibacterial dressing, including a contact layer. An anti-adhesion buffer layer is heat-pressed onto the outer surface of the contact layer, and a hydrogel particle layer is bonded to the outer surface of the anti-adhesion buffer layer. This multi-layer design solves problems related to wound infection, moisture management, exudate control, and accelerated healing. The contact layer uses antibacterial alginate fibers to prevent infection and maintain a moist environment. The hydrogel particle layer absorbs exudate and keeps the dressing moist, preventing leakage. The hydrogel layer provides additional moisture support, relieves pain, and promotes cell repair. The sustained-release drug layer continuously releases antibacterial agents and growth factors to promote healing. The absorbent layer further absorbs exudate and keeps the dressing dry. The impermeable layer protects the wound from external contamination through a semi-permeable PU membrane while maintaining breathability. The synergistic effect of these layers prevents dressing leakage and effectively promotes wound healing.

Description

Technical Field

[0001] This utility model relates to the field of medical antibacterial dressing technology, specifically to an alginate medical antibacterial dressing. Background Technology

[0002] Medical antibacterial dressings are used for wound care, primarily to prevent bacterial infection and promote wound healing. These dressings typically contain antibacterial ingredients that inhibit or kill pathogens around the wound, thereby reducing the risk of infection. They are widely used in the treatment of postoperative wounds, burns, diabetic ulcers, chronic wounds, and more.

[0003] Maintaining a suitable moist environment is crucial for promoting cell growth and accelerating healing during wound healing. However, excessive wound exudate can lead to dressing overflow, soaking of the skin around the wound, and complications such as skin inflammation, overhydration, and infection. Traditional dressings are often unable to effectively address these challenges simultaneously, resulting in problems such as unstable moist environment, uneven exudate absorption, and inadequate control of local infection.

[0004] Therefore, it is necessary to design an alginate medical antibacterial dressing to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an alginate medical antibacterial dressing to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an alginate medical antibacterial dressing, comprising a contact layer, an anti-adhesion buffer layer hot-pressed onto the outer surface of the contact layer, a hydrogel particle layer bonded to the outer surface of the anti-adhesion buffer layer, a hydrogel layer chemically cross-linked with the hydrogel particle layer by a hydrogel solution, a sustained-release drug layer hot-pressed onto the outer surface of the hydrogel layer, an absorbent layer bonded to the outer surface of the sustained-release drug layer by point bonding, a temperature control layer hot-pressed onto the outer surface of the absorbent layer, a waterproof layer physically bonded to the outer surface of the temperature control layer, and an antioxidant protective layer coated on the outer surface of the waterproof layer.

[0007] Preferably, the contact layer is made of alginate fiber and has a thickness of 0.5mm-2mm, and the water-adhesive particle layer is made of sodium polyacrylate and has a thickness of 1mm-3mm.

[0008] Preferably, the hydrogel layer is made of polyvinyl alcohol and has a thickness of 1 mm to 3 mm, and the sustained-release drug layer is made of biodegradable polymer microspheres and has a thickness of 0.1 mm to 1 mm.

[0009] Preferably, the absorbent layer is made of alginate composite material and the thickness of the absorbent layer is 2mm-5mm, and the impermeable layer is made of semi-permeable polyurethane (PU) membrane and the thickness of the impermeable layer is 0.02mm-0.1mm.

[0010] Preferably, the anti-adhesion buffer layer is made of medical-grade silicone coating or polyvinyl alcohol, and the thickness of the anti-adhesion buffer layer is 0.1-0.5 mm; the temperature control layer is made of fatty acid or paraffin-based microcapsules, and the thickness of the temperature control layer is 0.5-2 mm; and the antioxidant protective layer is made of an antioxidant enzyme-embedded polymer membrane, and the thickness of the antioxidant protective layer is 0.1-0.5 mm.

[0011] The technical solution provided by this utility model has the following advantages compared with the prior art: This invention addresses issues related to wound infection, moisture management, exudate control, and accelerated healing through a multi-layered design. The contact layer utilizes antibacterial alginate fibers to prevent infection and maintain a moist environment. The hydrogel particle layer absorbs exudate and keeps the wound moist, preventing leakage. The hydrogel layer provides additional moisture support, relieves pain, and promotes cell repair. The sustained-release drug layer continuously releases antibacterial agents and growth factors to promote healing. The absorbent layer further absorbs exudate and keeps the wound dry. The impermeable layer protects the wound from external contamination through a semi-permeable PU membrane while maintaining breathability. These layers work synergistically to prevent dressing spillage and effectively promote wound healing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram: 1. Contact layer; 2. Anti-adhesion buffer layer; 3. Hydrogel particle layer; 4. Hydrogel layer; 5. Sustained-release drug layer; 6. Absorbent layer; 7. Temperature control layer; 8. Impermeable layer; 9. Antioxidant protective layer. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] Obviously, many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] Please see Figure 1This invention provides an alginate medical antibacterial dressing, comprising a contact layer 1, an anti-adhesion buffer layer 2 hot-pressed onto the outer surface of the contact layer 1, a hydrogel particle layer 3 bonded to the outer surface of the anti-adhesion buffer layer 2, a hydrogel layer 4 chemically cross-linked to the hydrogel particle layer 3 by a hydrogel solution, a sustained-release drug layer 5 hot-pressed onto the outer surface of the hydrogel layer 4, an absorbent layer 6 spot-bonded to the outer surface of the sustained-release drug layer 5, a temperature control layer 7 hot-pressed onto the outer surface of the absorbent layer 6, a waterproof layer 8 physically bonded to the outer surface of the temperature control layer 7, and an antioxidant protective layer 9 coated on the outer surface of the waterproof layer 8. The contact layer 1 of the dressing is made of alginate fiber containing antibacterial components, directly contacting the wound surface, effectively inhibiting bacterial growth, reducing the risk of wound infection, and providing a moist environment to accelerate healing. The subsequent hydrogel particle layer 3 uses superabsorbent polymer particles, which can efficiently absorb wound fluid. Exudate is prevented from leaking out and the dressing is kept dry, while maintaining a moist environment in the wound area to avoid delayed healing or excessive crusting caused by dryness. The hydrogel layer 4 in the dressing further enhances the ability to maintain a moist environment and provides pain relief to the wound. During the wound healing process, the design of the sustained-release drug layer 5 is crucial. This layer slowly releases antibacterial agents or growth factors through biodegradable polymer microspheres to ensure continuous antibacterial protection of the wound during healing. It can also promote the formation of new tissue through the action of growth factors, prevent wound infection, and accelerate the repair process. The absorbent layer 6 provides additional liquid absorption function to ensure that exudate is quickly absorbed, avoid excessive exudate accumulation, keep the dressing dry, and prevent exudate from overflowing and damaging the surrounding skin. Finally, the impermeable layer 8 ensures that external contaminants and bacteria cannot enter the wound, while maintaining the breathability of the dressing, which is conducive to the natural breathing and healing of the wound.

[0016] To ensure better coordination between the layers, the contact layer 1 is made of alginate fiber with a thickness of 0.5mm-2mm; the hydrogel particle layer 3 is made of sodium polyacrylate with a thickness of 1mm-3mm; the hydrogel layer 4 is made of polyvinyl alcohol with a thickness of 1mm-3mm; the sustained-release drug layer 5 is made of biodegradable polymer microspheres with a thickness of 0.1mm-1mm; the absorbent layer 6 is made of alginate composite with a thickness of 2mm-5mm; and the impermeable layer 8 is made of semi-permeable polyurethane (PU) membrane with a thickness of 0.02mm-0.1mm.

[0017] Meanwhile, to prevent the dressing from sticking to the wound, reduce wound damage during dressing changes, and facilitate dressing removal, the anti-adhesion buffer layer 2 is made of medical-grade silicone coating or polyvinyl alcohol, and its thickness is 0.1-0.5mm. By using phase change materials to regulate wound temperature, it provides an optimal healing temperature environment, promotes cell growth and repair, and the temperature control layer 7 is made of fatty acid or paraffin-based microcapsules, with a thickness of 0.5-2mm. To protect newly formed tissue from oxidative damage and promote faster healing, the antioxidant protective layer 9 is made of an antioxidant enzyme-embedded polymer membrane, with a thickness of 0.1-0.5mm.

[0018] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0019] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0020] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An alginate medical antibacterial dressing, comprising a contact layer (1), characterized in that: The outer surface of the contact layer (1) is hot-pressed with an anti-adhesion buffer layer (2), and the outer surface of the anti-adhesion buffer layer (2) is bonded with a hydrogel particle layer (3). The hydrogel particle layer (3) is chemically cross-linked with a hydrogel layer (4) through a hydrogel solution. The outer surface of the hydrogel layer (4) is hot-pressed with a sustained-release drug layer (5), and the outer surface of the sustained-release drug layer (5) is bonded with an absorbent layer (6) through point bonding. The outer surface of the absorbent layer (6) is hot-pressed with a temperature control layer (7), and the outer surface of the temperature control layer (7) is physically composited with an anti-seepage layer (8). The outer surface of the anti-seepage layer (8) is coated with an antioxidant protective layer (9).

2. The alginate medical antibacterial dressing according to claim 1, characterized in that: The contact layer (1) is made of alginate fiber and has a thickness of 0.5mm-2mm. The hydrogel particle layer (3) is made of sodium polyacrylate and has a thickness of 1mm-3mm.

3. The alginate medical antibacterial dressing according to claim 1, characterized in that: The hydrogel layer (4) is made of polyvinyl alcohol and has a thickness of 1 mm to 3 mm. The sustained-release drug layer (5) is made of biodegradable polymer microspheres and has a thickness of 0.1 mm to 1 mm.

4. The alginate medical antibacterial dressing according to claim 1, characterized in that: The absorbent layer (6) is made of alginate composite and has a thickness of 2mm-5mm. The impermeable layer (8) is made of semi-permeable polyurethane (PU) membrane and has a thickness of 0.02mm-0.1mm.

5. The alginate medical antibacterial dressing according to claim 1, characterized in that: The anti-adhesion buffer layer (2) is made of medical silicone coating or polyvinyl alcohol, and the thickness of the anti-adhesion buffer layer (2) is 0.1-0.5 mm. The temperature control layer (7) is made of fatty acid or paraffin-based microcapsules, and the thickness of the temperature control layer (7) is 0.5-2 mm. The antioxidant protective layer (9) is made of polymer film embedded with antioxidant enzymes, and the thickness of the antioxidant protective layer (9) is 0.1-0.5 mm.

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