Antibacterial and anti-adhesion silicone rubber for medical apparatus and instruments
By adopting a multi-layer structure in silicone rubber materials, including anti-adhesive layer, anti-bacterial layer, anti-corrosion layer and tensile layer, the problem of insufficient anti-bacterial and anti-adhesive capabilities of existing silicone rubber materials is solved, and the performance of the material is significantly improved , reducing the risk of infection.
Patent Information
- Application Number
- CN202323353983.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-11
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-11
AI Technical Summary
The existing silicone rubber materials have poor antibacterial and anti-adhesion capabilities, which leads to easy formation of bacterial biofilms in medical devices and increases the risk of infection.
Silicone rubber material with a multi-layer structure includes a symmetrically arranged anti-adhesive layer, an anti-bacterial layer, an anti-corrosion layer and a tensile layer. The anti-bacterial, anti-adhesive and anti-corrosion capabilities of the material are improved through the combination of these layers.
It significantly improves the antibacterial and anti-adhesion ability of silicone rubber materials, extends the service life of the material, reduces the risk of infection, and expands its scope of application in medical devices.
Smart Images
Figure CN222431803U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an antibacterial and anti-adhesion silicone rubber used for medical devices. Background Art
[0002] Medical silicone rubber can be used as an artificial organ, and can be applied in cosmetic surgery and repair, medical equipment, etc. It can also be used in drug release systems and biomedical application systems, such as blood transfusion tubes, intravenous cannulas, nasal cannulas and otitis media ventilation tubes, etc., which have higher requirements for the antibacterial properties of materials, so silicone rubber is increasingly recognized by the medical community. Silicone rubber medical products usually need to contact human tissues, and bacteria are very easy to adhere to the surface of non-polar silicone rubber materials and form biofilms. Once the biofilm is formed, the adhesion of bacteria will be difficult to stop. The biofilm formed on medical devices will greatly increase the opportunity for bacteria to invade the human body. The hidden dangers of infection cannot be completely eliminated, often leading to bacterial infections in patients, aggravating the pain and even leading to death. Therefore, it is very important to modify silicone rubber, reduce the adhesion of bacteria on the surface of silicone rubber, and improve the antibacterial properties of silicone rubber materials.
[0003] The antibacterial modification of silicone rubber is achieved by blending, physical coating or chemical grafting with antibacterial substances, so that the material can directly kill bacteria attached to the surface or existing in the surrounding environment. As an excellent antibacterial agent, it should have immediate, broad-spectrum, long-lasting, stable and safe antibacterial properties.
[0004] However, the internal structure of existing silicone rubber is relatively simple, and the antibacterial and anti-sticking capabilities of silicone rubber are relatively poor, which affects the scope of application of silicone rubber. Utility Model Content
[0005] The utility model aims to solve the problem that the internal structure of silicone rubber in the prior art is relatively simple and the antibacterial and anti-adhesion ability of silicone rubber is relatively poor, and proposes an antibacterial and anti-adhesion silicone rubber for medical devices.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] An antibacterial and anti-adhesion silicone rubber for medical devices comprises a first anti-adhesion layer and a second anti-adhesion layer symmetrically arranged, wherein the first anti-adhesion layer and the second anti-adhesion layer are fixedly connected to the first anti-bacterial layer and the second anti-bacterial layer on opposite sides thereof, the first anti-bacterial layer is fixedly connected to the first anti-corrosion layer on the side away from the first anti-adhesion layer, the second anti-bacterial layer is fixedly connected to the second anti-corrosion layer on the side away from the second anti-adhesion layer, the first anti-corrosion layer is fixedly connected to the first anti-stretching layer on the side away from the first anti-bacterial layer, the second anti-corrosion layer is fixedly connected to the second anti-stretching layer on the side away from the second anti-bacterial layer, and a base layer is fixedly connected between the first anti-stretching layer and the second anti-stretching layer.
[0008] Preferably, the first anti-sticking layer and the second anti-sticking layer are both PE isolation film layers.
[0009] Preferably, the first antibacterial layer and the second antibacterial layer are both cellulose-based nanosilver composite layers.
[0010] Preferably, the first anti-corrosion layer and the second anti-corrosion layer are both phenolic epoxy resin coatings.
[0011] Preferably, the first anti-stretching layer and the second anti-stretching layer are both HDPE film layers.
[0012] Preferably, the base layer is a silicone rubber layer.
[0013] Beneficial effects:
[0014] 1. The setting of the first antibacterial layer and the second antibacterial layer enhances the antibacterial ability of the silicone rubber. At the same time, the setting of the cellulose-based nano-silver composite layer enhances the antibacterial ability of the antibacterial layer. The setting of the first anti-corrosion layer and the second anti-corrosion layer enhances the anti-corrosion ability of the silicone rubber. At the same time, the setting of the phenolic epoxy resin coating enhances the anti-corrosion effect of the anti-corrosion layer.
[0015] 2. The first anti-stretching layer and the second anti-stretching layer are provided to enhance the anti-stretching ability of the silicone rubber, and the first anti-adhesion layer and the second anti-adhesion layer are provided to enhance the anti-adhesion ability of the silicone rubber. The utility model improves the antibacterial and anti-adhesion ability of the silicone rubber through the provision of a multi-layer structure, thereby expanding the scope of application of the silicone rubber. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a schematic structural diagram of an antibacterial and anti-adhesion silicone rubber for medical devices.
[0017] In the figure: 1 first anti-sticking layer, 2 second anti-sticking layer, 3 first antibacterial layer, 4 second antibacterial layer, 5 first anti-corrosion layer, 6 second anti-corrosion layer, 7 first anti-stretching layer, 8 second anti-stretching layer, 9 base layer. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0019] Reference Figure 1, an antibacterial and anti-adhesion silicone rubber for medical devices, comprising a first anti-adhesion layer 1 and a second anti-adhesion layer 2 symmetrically arranged, a first antibacterial layer 3 and a second antibacterial layer 4 are fixedly connected to the side of the first antibacterial layer 1 opposite to the second anti-adhesion layer 2, for enhancing the antibacterial ability of the silicone rubber, and a first anti-corrosion layer 5 is fixedly connected to the side of the first antibacterial layer 3 away from the first anti-adhesion layer 1, for enhancing the anti-corrosion ability of the silicone rubber;
[0020] In the utility model, the second antibacterial layer 4 is fixedly connected to the side away from the second anti-adhesion layer 2 with the second anti-corrosion layer 6 for enhancing the anti-corrosion ability of the silicone rubber, the first anti-corrosion layer 5 is fixedly connected to the side away from the first antibacterial layer 3 with the first anti-stretching layer 7, the second anti-corrosion layer 6 is fixedly connected to the side away from the second antibacterial layer 4 with the second anti-stretching layer 8 for enhancing the anti-stretching ability of the silicone rubber, and a base layer 9 is fixedly connected between the first anti-stretching layer 7 and the second anti-stretching layer 8.
[0021] In the utility model, the first anti-sticking layer 1 and the second anti-sticking layer 2 are both PE isolation film layers, which enhance the anti-sticking ability of the silicone rubber; the first antibacterial layer 3 and the second antibacterial layer 4 are both cellulose-based nano-silver composite layers, which enhance the antibacterial ability of the antibacterial layer; the first anti-corrosion layer 5 and the second anti-corrosion layer 6 are both phenolic epoxy resin coatings, which enhance the anti-corrosion ability of the anti-corrosion layer; the first anti-stretching layer 7 and the second anti-stretching layer 8 are both HDPE film layers, which enhance the anti-stretching ability of the anti-stretching layer; and the base layer 9 is a silicone rubber layer.
[0022] In the utility model, the provision of the first antibacterial layer 3 and the second antibacterial layer 4 enhances the antibacterial ability of the silicone rubber, the provision of the first anticorrosion layer 5 and the second anticorrosion layer 6 enhances the anticorrosion ability of the silicone rubber, and the provision of the phenolic epoxy resin coating enhances the anticorrosion ability of the anticorrosion layer, and the provision of the first anti-tensile layer 7 and the second anti-tensile layer 8 enhances the anti-tensile ability of the silicone rubber.
[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An antibacterial and anti-adhesive silicone rubber for medical devices, comprising a first anti-adhesive layer (1) and a second anti-adhesive layer (2) symmetrically arranged, characterized in that: The first antibacterial layer (3) and the second antibacterial layer (4) are fixedly connected to the side of the first anti-adhesive layer (1) opposite to the second anti-adhesive layer (2); the first antibacterial layer (3) is fixedly connected to the side away from the first anti-adhesive layer (1) with the first anti-corrosion layer (5); the second antibacterial layer (4) is fixedly connected to the side away from the second anti-adhesive layer (2) with the second anti-corrosion layer (6); the first anti-corrosion layer (5) is fixedly connected to the side away from the first antibacterial layer (3) with the first anti-stretching layer (7); the second anti-corrosion layer (6) is fixedly connected to the side away from the second antibacterial layer (4) with the second anti-stretching layer (8); and a base layer (9) is fixedly connected between the first anti-stretching layer (7) and the second anti-stretching layer (8).
2. The antibacterial and anti-adhesion silicone rubber for medical devices according to claim 1, characterized in that: The first anti-adhesive layer (1) and the second anti-adhesive layer (2) are both PE isolation film layers.
3. The antibacterial and anti-adhesion silicone rubber for medical devices according to claim 1, characterized in that: The first antibacterial layer (3) and the second antibacterial layer (4) are both cellulose-based nanosilver composite layers.
4. The antibacterial and anti-adhesion silicone rubber for medical devices according to claim 1, characterized in that: The first anti-corrosion layer (5) and the second anti-corrosion layer (6) are both phenolic epoxy resin coatings.
5. The antibacterial and anti-adhesion silicone rubber for medical devices according to claim 1, characterized in that: The first anti-stretching layer (7) and the second anti-stretching layer (8) are both HDPE film layers.
6. The antibacterial and anti-adhesion silicone rubber for medical devices according to claim 1, characterized in that: The base layer (9) is a silicone rubber layer.