Antibacterial dressing

Abstract

The invention discloses an antibacterial dressing which comprises a dressing body, an antibacterial material is arranged in the dressing body, antibacterial ions or nano-particles capable of releasing the antibacterial ions are contained in the antibacterial material, and an ultrafiltration membrane used for blocking the nano-particles and allowing the antibacterial ions to pass through is arranged on one side, where a wound surface is applied, of the dressing body. The device has the advantages of simple structure, safety and effectiveness, and the nanoparticles are prevented from contacting with human body wounds.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to an antibacterial dressing. Background Art

[0002] Nanomaterials have special size and surface effects, which make them widely used in catalysis, sensing, drug carriers and other fields. Although nanomaterials have shown great application potential in many fields, their potential toxicity cannot be ignored. Even if nanomaterials are not used in the production process of medical devices (or components), nanoparticles are easily generated during their use, degradation, wear or mechanical processing (such as in-situ grinding and polishing of medical devices). Nanoparticles can not only enter the human body through the respiratory system, but may cause damage to the respiratory mucosa, induce inflammation and respiratory diseases; enter the blood circulation and affect the nervous system, which may cause nerve damage and paresthesia; if they come into direct contact with the skin, they can cause dermatitis and skin damage. Studies have shown that nanoscale surface characteristics can affect cell arrangement, cell morphology, cell signaling, gene expression and extracellular matrix. In view of the potential internal contact of bears, the release of nano-objects and the use of free nanomaterials are considered to have the highest potential risks.

[0003] Metal ions have excellent antibacterial properties and are therefore often used in antibacterial dressings. However, metal ions easily aggregate to form nanoparticles. Since human body fluids contain chloride ions, when silver-containing dressings are applied to wounds, even if the silver-containing dressings do not contain nanoparticles, the dressings can release silver ions. When the silver ion concentration exceeds a certain limit, they may form insoluble nanoparticles with the chloride ions in the body fluids. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a safe and effective antibacterial dressing with a simple structure and preventing nanoparticles from contacting human wounds.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: An antibacterial dressing comprises a dressing body, wherein the dressing body has an antibacterial material, wherein the antibacterial material contains antibacterial ions or nanoparticles capable of releasing antibacterial ions, and wherein the dressing body is provided with an ultrafiltration membrane on one side of the wound surface for blocking the nanoparticles and allowing the antibacterial ions to pass through.

[0006] As a further improvement of the above technical solution: The ultrafiltration membrane is coated on the outer surface of the dressing body.

[0007] A closing film is arranged on the dressing body at the side away from the wound surface, and the closing film and the ultrafiltration membrane are enclosed and coated on the outer surface of the dressing body.

[0008] A buffer gel for reducing the concentration of antibacterial ions is arranged below the ultrafiltration membrane, and a porous membrane is coated below the buffer gel.

[0009] A buffer gel for reducing the concentration of antibacterial ions is arranged between the ultrafiltration membrane and the dressing body, and a porous membrane is arranged between the buffer gel and the dressing body.

[0010] An antibacterial dressing comprises a dressing body, wherein the dressing body has an antibacterial material, wherein the antibacterial material contains antibacterial ions or nanoparticles capable of releasing antibacterial ions, and wherein a buffer gel for reducing the concentration of antibacterial ions is arranged on one side of the dressing body for applying to the wound surface.

[0011] As a further improvement of the above technical solution: The outer surface of the buffer gel is covered with a porous membrane.

[0012] Compared with the prior art, the advantages of the present invention are: The antibacterial dressing of the present invention has a simple structure. Nanomaterials are arranged in the dressing body, and antibacterial ions are released by the nanomaterials to inhibit and sterilize human wounds. An ultrafiltration membrane is arranged on the dressing side to avoid direct contact between nanoparticles and the human body, thereby preventing the nanoparticles from entering the human body and causing harm. The dressing is safe and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of embodiment 1 of the present invention.

[0014] Figure 2 It is a structural diagram of embodiment 2 of the present invention.

[0015] Figure 3 It is a structural diagram of embodiment 3 of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of embodiment 4 of the present invention.

[0017] Figure 5 It is a structural diagram of embodiment 5 of the present invention.

[0018] The symbols in the figure represent: 1. Dressing body; 2. Nanomaterial; 3. Ultrafiltration membrane; 4. Sealing membrane; 5. Buffer gel; 6. Porous membrane. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Embodiment 1: like Figure 1As shown, the first embodiment of the antibacterial dressing of the present invention comprises a dressing body 1, wherein the dressing body 1 has an antibacterial material 2, wherein the antibacterial material 2 contains nanoparticles that can release antibacterial ions, and the dressing body 1 is provided with an ultrafiltration membrane 3 on the side of the wound surface to block the nanoparticles and allow the antibacterial ions to pass. The present invention provides an antibacterial material 2 (including nanoparticles such as copper, zinc, silver, and gold) in the dressing body 1, and the nanoparticles release antibacterial ions to inhibit and sterilize the wound surface of the human body, and an ultrafiltration membrane 3 is provided on the application side for coating, so as to avoid direct contact between the nanoparticles and the human body, and prevent the nanoparticles from entering the human body to cause harm, which is safe and effective.

[0021] In this embodiment, the ultrafiltration membrane 3 is coated on the outer surface of the dressing body 1. The dressing body 1 is sealed and coated by the ultrafiltration membrane 3 to prevent the nanoparticles from escaping.

[0022] Embodiment 2: like Figure 2 As shown, the second embodiment of the antibacterial dressing of the present invention is basically the same as the first embodiment, except that: In this embodiment, a sealing film 4 is provided on the dressing body 1 on the side away from the wound surface, and the sealing film 4 and the ultrafiltration membrane 3 are enclosed and coated on the outer surface of the dressing body 1. The dressing body 1 is sealed and coated by the sealing film 4 and the ultrafiltration membrane 3 to prevent the nanoparticles from escaping.

[0023] Embodiment 3: like Figure 3 As shown, the third embodiment of the antibacterial dressing of the present invention is basically the same as the first embodiment, except that: In this embodiment, a buffer gel 5 for reducing the concentration of antibacterial ions is provided below the ultrafiltration membrane 3, and a porous membrane 6 is coated below the buffer gel 5. In this structure, the buffer gel 5 simulating human body fluid (having the same ions and proteins as human body fluid) is used to prevent excessive antibacterial ions from escaping and reacting with human body fluid to form nanoparticles that enter the human body and cause harm, and the porous membrane 6 protects the buffer gel 5.

[0024] Embodiment 4: like Figure 4 As shown, the fourth embodiment of the antibacterial dressing of the present invention is basically the same as the embodiment 3, except that: In this embodiment, a buffer gel 5 for reducing the concentration of antibacterial ions is provided between the ultrafiltration membrane 3 and the dressing body 1, and a porous membrane 6 is provided between the buffer gel 5 and the dressing body 1. In this structure, a buffer gel 5 simulating human body fluid (having the same ions and proteins as human body fluid) is used to prevent excessive antibacterial ions from escaping and reacting with human body fluid to form nanoparticles that enter the human body and cause harm, and the porous membrane 6 protects the buffer gel 5.

[0025] Embodiment 5: like Figure 5 As shown, the fifth embodiment of the antibacterial dressing of the present invention is basically the same as the first embodiment, except that: The antibacterial dressing of this embodiment includes a dressing body 1, wherein the dressing body 1 has an antibacterial material 2, wherein the antibacterial material 2 contains nanoparticles that can release antibacterial ions, and the dressing body 1 is provided with a buffer gel 5 for reducing the concentration of antibacterial ions on one side of the wound surface to be applied, and the outer surface of the buffer gel 5 is covered with a porous membrane 6. By providing the antibacterial material 2 in the dressing body 1, the antibacterial ions released by the nanoparticles are inhibited and sterilized on the wound surface of the human body, and the buffer gel 5 is used to simulate human body fluids to buffer the antibacterial ions, thereby reducing the concentration of antibacterial ions, and preventing excessive antibacterial ions from escaping and reacting with human body fluids to form nanoparticles that enter the human body and cause harm.

[0026] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. An antibacterial dressing, characterized in that: The dressing body (1) comprises an antibacterial material (2) therein, wherein the antibacterial material (2) contains antibacterial ions or nanoparticles capable of releasing antibacterial ions, and the dressing body (1) is provided with an ultrafiltration membrane (3) on one side of the wound surface for blocking the nanoparticles and allowing the antibacterial ions to pass through.

2. The antibacterial dressing according to claim 1, characterized in that: The ultrafiltration membrane (3) is coated on the outer surface of the dressing body (1).

3. The antibacterial dressing according to claim 1, characterized in that: A sealing membrane (4) is provided on the dressing body (1) at a side facing away from the wound surface to be applied, and the sealing membrane (4) and the ultrafiltration membrane (3) are enclosed and coated on the outer surface of the dressing body (1).

4. The antibacterial dressing according to claim 3, characterized in that: A buffer gel (5) for reducing the concentration of antibacterial ions is provided below the ultrafiltration membrane (3), and a porous membrane (6) is coated below the buffer gel (5).

5. The antibacterial dressing according to claim 3, characterized in that: A buffer gel (5) for reducing the concentration of antibacterial ions is provided between the ultrafiltration membrane (3) and the dressing body (1), and a porous membrane (6) is provided between the buffer gel (5) and the dressing body (1).

6. An antibacterial dressing, characterized in that: The dressing body (1) comprises an antibacterial material (2) inside the dressing body (1), wherein the antibacterial material (2) contains antibacterial ions or nanoparticles capable of releasing antibacterial ions, and a buffer gel (5) for reducing the concentration of antibacterial ions is arranged on one side of the dressing body (1) for applying to the wound surface.

7. The antibacterial dressing according to claim 6, characterized in that: The outer surface of the buffer gel (5) is covered with a porous membrane (6).

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