Dressing for promoting repair of infectious wound

Abstract

The utility model discloses a dressing for promoting repair of infectious wounds, which relates to the technical field of wound healing dressings and comprises a sodium alginate foam layer, a magnetic fiber layer is wrapped on the outer surface of the sodium alginate foam layer, a slow-release stratosphere is wrapped on the outer surface of the magnetic fiber layer, and the slow-release stratosphere is arranged on the outer surface of the slow-release stratosphere. The outer surface of the slow-release stratosphere is wrapped with an antibacterial protection layer, and the outer surface of the antibacterial protection layer is wrapped with a rapid liquid absorption layer. The polyvinyl alcohol is arranged in the quick liquid absorption layer, so that the quick liquid absorption layer has certain adhesion, the dressing can be conveniently adhered to the surface of a wound, the dressing is adhered to the wound of a patient through the quick liquid absorption layer, wound secretions can be quickly absorbed by the quick liquid absorption layer, and the dressing is convenient to use. Meanwhile, the wound is kept in a moist environment through the antibacterial protection layer, the purpose of lasting antibiosis is achieved, meanwhile, wound healing is efficiently promoted, finally, a soft supporting effect is provided for the dressing through the sodium alginate foam layer, the dressing is promoted to be better attached to the wound, and the using effect of the dressing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wound healing dressings, in particular to a dressing for promoting the repair of infectious wounds. Background Art

[0002] Wound healing refers to the healing process after the body is subjected to external forces and the skin and other tissues are severed or damaged. It includes the regeneration of various tissues, the proliferation of granulation tissue, and the complex combination of scar tissue formation, showing the synergistic effect of various processes.

[0003] Dressings refer to auxiliary materials used in addition to the main ingredients of an item, mainly hemostatic gauze (usually medical degreased gauze). Traditional dressings are mainly dry gauze and oil gauze. Modern wound dressings include interactive wound dressings, calcium alginate dressings, silver dressings, foam dressings, hydrocolloid dressings, and hydrogel dressings. However, the main function of traditional dressings is to achieve hemostasis, and the function is relatively single. For this reason, we provide a dressing that promotes the repair of infectious wounds to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a dressing that promotes the repair of infectious wounds, achieves high efficiency and lasting antibacterial effect, has a large liquid absorption capacity, reduces the risk of infection, and does not need to be replaced for a long time, thereby reducing the number of dressing changes, reducing the pain of patients, and quickly promoting the rapid repair of infectious wounds.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dressing for promoting the repair of infectious wounds, comprising a sodium alginate foam layer, the outer surface of the sodium alginate foam layer is wrapped with a magnetic fiber layer, the outer surface of the magnetic fiber layer is wrapped with a sustained-release stratosphere, the outer surface of the sustained-release stratosphere is wrapped with an antibacterial protective layer, and the outer surface of the antibacterial protective layer is wrapped with a fast liquid absorption layer.

[0006] Furthermore, polyvinyl alcohol is provided in the rapid liquid-absorbing layer, so that the rapid liquid-absorbing layer has a certain degree of adhesion, which is conducive to the dressing being adhered to the wound surface.

[0007] Furthermore, the outer surface of the rapid liquid-absorbing layer is wrapped with a waterproof breathable film, which can wrap the dressing and effectively protect the dressing during storage to prevent the outer surface of the dressing from being contaminated by dust and debris, which would affect the normal use of the dressing.

[0008] Furthermore, the outer surface and the interior of the sodium alginate foam layer are provided with hollow depressions, which provide a soft support effect for the dressing, push the dressing to fit the wound better, and improve the use effect of the dressing.

[0009] Furthermore, the antibacterial protective layer includes an antibacterial layer body, the upper and lower sides of the antibacterial layer body are provided with silver ion fiber layers, the sides of the two silver ion fiber layers away from each other are provided with natural fiber layers, the sides of the two natural fiber layers away from each other are provided with grid circles, and the natural fiber layers are made of kapok fiber or chitosan fiber. Kapok fiber can effectively inhibit Escherichia coli, and chitosan fiber has good affinity for protein in cells and is non-toxic as a whole, and has good inhibitory effects on fungi and bacteria (as can be seen from Table 2, the dressing has an obvious antibacterial effect of more than 70% on the fungi Candida albicans and Escherichia coli).

[0010] Furthermore, the two sides of the two mesh circles that are away from each other are provided with an isolation permeable membrane layer, and the outer surface of the isolation permeable membrane layer is provided with a gel layer. The mesh circle creates a distance between the isolation permeable membrane and the natural fiber layer. At the same time, the gel layer can greatly increase the connection effect between the antibacterial protective layer and the sustained-release stratosphere and the rapid liquid absorption layer.

[0011] Compared with the prior art, the dressing for promoting the repair of infectious wounds has the following beneficial effects:

[0012] 1. The utility model attaches the rapid liquid absorption layer to the wound of the patient, utilizes the rapid liquid absorption layer to quickly absorb wound secretions, and utilizes the antibacterial protective layer to keep the wound in a moist environment, thereby achieving the purpose of lasting antibacterial and efficiently promoting wound healing. Finally, the sodium alginate foam layer is utilized to provide a soft support effect for the dressing, thereby promoting the dressing to fit the wound more closely and improving the use effect of the dressing.

[0013] 2. The utility model provides polyvinyl alcohol in the rapid liquid absorption layer, so that the rapid liquid absorption layer has a certain degree of adhesion, which is conducive to the dressing being adhered to the wound surface. The dressing can be wrapped by a waterproof and breathable film. During storage, the dressing can be effectively protected to prevent the outer surface of the dressing from being contaminated with dust and debris, which would affect the normal use of the dressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the utility model;

[0015] Figure 2 This is the front view of the utility model;

[0016] Figure 3 This is a schematic diagram of the antibacterial layer of the utility model;

[0017] Figure 4 This is a cross-sectional view of the antibacterial layer of the utility model.

[0018] In the figure: 1. Sodium alginate foam layer; 2. Magnetic fiber layer; 3. Sustained release stratosphere; 4. Antibacterial protective layer; 401. Antibacterial layer body; 402. Silver ion fiber layer; 403. Natural fiber layer; 404. Grid ring; 405. Isolation and penetration membrane; 406. Gel layer; 5. Rapid liquid absorption layer; 6. Waterproof and breathable membrane.

[0019] Table 1 Cell compatibility of the dressing for promoting infectious wound repair of the utility model (to mouse fibroblast L929).

[0020] Table 2 The antibacterial effect of the dressing for promoting infectious wound repair of the utility model on fungi and bacteria (fungi: Candida albicans, bacteria: Escherichia coli). DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] To this end, this embodiment provides a dressing that promotes the repair of infectious wounds. The device achieves high efficiency and long-lasting antibacterial properties, has a large liquid absorption capacity, and reduces the risk of infection. At the same time, it does not need to be replaced for a long time, which reduces the number of dressing changes, reduces the patient's pain, and quickly promotes the rapid repair of infectious wounds.

[0023] See also Figures 1 to 4 This embodiment proposes a dressing for promoting the repair of infectious wounds, including a sodium alginate foam layer 1. The outer surface and the interior of the sodium alginate foam layer 1 are provided with hollow depressions to provide a soft support effect for the dressing, promote the dressing to fit the wound better, and improve the use effect of the dressing.

[0024] The outer surface of the sodium alginate foam layer 1 is wrapped with a magnetic fiber layer 2, the outer surface of the magnetic fiber layer 2 is wrapped with a sustained-release stratosphere 3, the outer surface of the sustained-release stratosphere 3 is wrapped with an antibacterial protective layer 4, and the antibacterial protective layer 4 is a chitosan-polyvinyl alcohol hydrogel layer loaded with silver nanoparticles. The dressing can keep the wound in a moist environment, achieve the purpose of lasting antibacterial, and efficiently promote wound healing.

[0025] The outer surface of the antibacterial protective layer 4 is wrapped with a fast liquid absorption layer 5, which is a polyvinyl alcohol layer, so that the fast liquid absorption layer 5 has a certain degree of adhesion, which is conducive to the adhesion of the dressing to the wound surface and ensures cell compatibility. It can be concluded from Table 1 that the dressing has low toxicity and the survival rate is still over 90% after 48 hours.

[0026] Reference Figure 4The antibacterial protective layer 4 comprises an antibacterial layer body 401, the upper and lower sides of the antibacterial layer body 401 are both provided with silver ion fiber silk layers 402, the sides of the two silver ion fiber silk layers 402 away from each other are both provided with natural fiber silk layers 403, the sides of the two natural fiber silk layers 403 away from each other are both provided with mesh circles 404, the natural fiber silk layers 403 are made of kapok fiber or chitosan fiber, kapok fiber can well inhibit Escherichia coli, chitosan fiber has good affinity for protein, and is non-toxic as a whole, and has good inhibitory effects on fungi and bacteria (as can be seen from Table 2, the fungi and bacteria inhibition rates are both over 70%, with obvious antibacterial effects).

[0027] The sides of the two mesh circles 404 that are away from each other are both provided with an isolating permeable membrane layer 405, and the outer surface of the isolating permeable membrane layer 405 is provided with a gel layer 406. The mesh circles 404 create a distance between the isolating permeable membrane 405 and the natural fiber layer 403. At the same time, the gel layer 406 can greatly increase the connection effect between the antibacterial protective layer 4 and the sustained-release stratosphere 3 and the rapid liquid absorption layer 5.

[0028] Reference Figure 1 The outer surface of the rapid liquid-absorbing layer 5 is wrapped with a waterproof breathable membrane 6, which can wrap the dressing and effectively protect the dressing during storage to prevent the outer surface of the dressing from being contaminated with dust and debris, which would affect the normal use of the dressing.

[0029]

[0030] Table 1

[0031]

[0032] Table 2

[0033] Working principle: First, the rapid liquid absorption layer 5 is attached to the wound position of the patient, and the rapid liquid absorption layer 5 is used to quickly absorb wound secretions. At the same time, the antibacterial protective layer 4 is used to keep the wound in a moist environment to achieve the purpose of lasting antibacterial and effectively promote wound healing. Finally, the sodium alginate foam layer 1 is used to provide a soft support effect for the dressing, which promotes the dressing to fit the wound better and improve the use effect of the dressing.

Claims

1. A dressing for promoting the repair of infectious wounds, comprising a sodium alginate foam layer (1), characterized in that: The outer surface of the sodium alginate foam layer (1) is wrapped with a magnetic fiber layer (2), the outer surface of the magnetic fiber layer (2) is wrapped with a slow-release stratosphere (3), the outer surface of the slow-release stratosphere (3) is wrapped with an antibacterial protective layer (4), and the outer surface of the antibacterial protective layer (4) is wrapped with a fast liquid absorption layer (5).

2. A dressing for promoting the repair of infectious wounds according to claim 1, characterized in that: Polyvinyl alcohol is provided in the quick liquid-absorbing layer (5).

3. A dressing for promoting the repair of infectious wounds according to claim 1, characterized in that: The outer surface of the rapid liquid-absorbing layer (5) is wrapped with a waterproof and breathable membrane (6).

4. The dressing for promoting the repair of infectious wounds according to claim 1, characterized in that: The outer surface and the interior of the sodium alginate foam layer (1) are provided with hollow depressions.

5. The dressing for promoting the repair of infectious wounds according to claim 1, characterized in that: The antibacterial protective layer (4) comprises an antibacterial layer body (401), wherein the upper and lower side surfaces of the antibacterial layer body (401) are both provided with silver ion fiber yarn layers (402), the sides of the two silver ion fiber yarn layers (402) away from each other are both provided with natural fiber yarn layers (403), and the sides of the two natural fiber yarn layers (403) away from each other are both provided with mesh rings (404).

6. A dressing for promoting the repair of infectious wounds according to claim 5, characterized in that: The side surfaces of the two mesh rings (404) that are away from each other are both provided with an isolating permeable membrane layer (405), and the outer surface of the isolating permeable membrane layer (405) is provided with a gel layer (406).

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