Multifunctional composite material wound dressing
The multi-layer composite wound dressing solves the problems of poor air permeability and difficult odor removal of existing hemostatic materials, and achieves the multifunctional effects of rapid absorption, antibacterial and promotion of wound healing.
Patent Information
- Application Number
- CN202421987743.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-08-16
AI Technical Summary
Existing hemostatic materials have slow hemostatic effects, are easy to adhere to wounds, have poor air permeability, are difficult to remove odors, and have poor biocompatibility, resulting in single performance and being unable to effectively inhibit bacterial infection and promote wound healing.
It adopts a multi-layer composite material structure, including a breathable surface layer, an absorption layer, a sustained-release layer and a reminder layer. The breathable surface layer is a polyurethane film, the absorption layer is a polyurethane sponge composed of carbon nanotubes and conductive grids, the sustained-release layer contains sustained-release capsules, and the reminder layer is reflective paper. Each layer of material has a specific function to achieve rapid absorption, hemostasis, antibacterial and reminder effects.
It can quickly absorb blood and odor, inhibit bacterial infection, promote wound healing, prevent adhesion, improve breathability and visibility, reduce scars, and provide comprehensive wound care effects.
Smart Images
Figure CN223323673U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of new dressing materials, and more specifically, to a multifunctional composite wound dressing. Background Art
[0002] Existing hemostatic drugs or materials have unsatisfactory hemostatic effects due to their slow hemostatic effect, easy adhesion to wounds, poor air permeability, difficult-to-remove adhesive residues, poor biocompatibility, and odor. The performance and efficacy of the materials are also too single. Therefore, it is of great significance to develop a biomedical debridement and antibacterial material with good biocompatibility, which can quickly absorb odor, stop bleeding, inhibit bacterial infection, and promote wound healing.
[0003] In order to solve the above problems, the present application provides a multifunctional composite material wound dressing. Utility Model Content
[0004] The present application provides the following technical solution: a multifunctional composite wound dressing, comprising a breathable surface layer, an absorption layer is provided at the bottom of the breathable surface layer, a sustained-release layer is provided at the bottom of the absorption layer, a gel layer 1 is provided at the bottom of the sustained-release layer, and a reminder layer is provided on the outside of the breathable surface layer.
[0005] Through the above technical solution, the long-term absorption, debridement and antibacterial functions of the wound surface and foreign matter on the wound surface are guaranteed.
[0006] Furthermore, a second gel layer is provided on the outer side of the first gel layer, and the reminder layer is fixedly connected to the top of the second gel layer.
[0007] Through the above technical solution, the reminder layer is adhered to the skin surface through the second gel layer.
[0008] Furthermore, the breathable surface layer is a breathable and waterproof polyurethane film, and the thickness of the breathable surface layer is ≤0.5 mm.
[0009] Through the above technical solution, the breathable surface layer has basic support and waterproof, breathable and moisture-permeable functions.
[0010] Furthermore, the absorption layer is a polyurethane sponge, and a porous skeleton is provided inside the absorption layer, the porous skeleton is composed of carbon nanotubes and a conductive grid, and the thickness of the absorption layer is ≤50 mm.
[0011] Through the above technical solution, small molecules of blood, feces and pus can be quickly absorbed, and at the same time, it has the function of adsorbing and removing rotten odors.
[0012] Furthermore, a sustained-release capsule is provided inside the sustained-release layer, and the sustained-release capsule is round or oval.
[0013] Through the above technical solution, the sustained-release capsule can absorb the body temperature and release biomass small molecules with healing effects, which have the functions of reducing swelling and pain, coagulation, reducing swelling and itching, and reducing scars on the wound surface.
[0014] Furthermore, the particle size of the sustained-release capsule is ≤0.1 mm, and the thickness of the sustained-release layer is ≤2 mm.
[0015] Furthermore, the reminder layer is reflective paper, and the first gel layer and the second gel layer are both polypeptide carboxymethyl cellulose.
[0016] Through the above technical solution, polypeptide carboxymethyl cellulose has self-adhesiveness and can fit well with the skin without other adhesives. It has excellent antibacterial, anti-adhesion and tissue-growing effects.
[0017] In summary, this application has the following beneficial technical effects:
[0018] 1. The carbon nanotube composite fabric fiber conductive network has the ability to quickly absorb overflowed blood, semen, and pus molecules, promote the absorption of pus on the wound surface, and keep the wound surface dry.
[0019] 2. Release bio-based small molecules with healing function to attach to the wound surface, promote wound healing, and have the effects of reducing swelling, relieving pain, reducing swelling and itching, and reducing scars.
[0020] 3. Polypeptide-type carbon nanosilver gel not only has adhesive properties on the back, and can have a good bonding effect with human skin, but also has the effects of sterilization, anti-inflammation and tissue regeneration.
[0021] 4. The reflective paper improves the visibility of the wound patch, preventing the wound from being touched at night when it is invisible, thus playing a role in protecting the wound. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the structure of this application;
[0023] Figure 2 A top view of the present application;
[0024] Figure 3 This is a schematic diagram of the absorption layer structure of this application.
[0025] Description of the numbers in the figure:
[0026] 1. Breathable surface layer; 2. Absorption layer; 21. Porous skeleton; 211. Carbon nanotubes; 212. Conductive grid; 3. Sustained-release layer; 4. Gel layer 1; 5. Reminder layer; 6. Gel layer 2. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0028] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0030] Example:
[0031] The present application discloses a multifunctional composite wound dressing. Figure 1 、 Figure 2 and Figure 3, including a breathable surface layer 1, the breathable surface layer 1 is a breathable and waterproof polyurethane film, the thickness of the breathable surface layer 1 is ≤0.5mm, the breathable surface layer 1 is located at the top layer of the present application, has basic support and waterproof, breathable and moisture permeable functions, and is soft to the touch; the bottom of the breathable surface layer 1 is provided with an absorption layer 2, the absorption layer 2 is a polyurethane sponge, and the interior of the absorption layer 2 is provided with a porous skeleton 21, the porous skeleton 21 is composed of carbon nanotubes 211 and a conductive grid 212, the absorption layer 2 can quickly absorb blood, rotten fluid, pus small molecules, and at the same time resist decay foreign matter The invention has the function of absorbing and removing odor; the thickness of the absorption layer 2 is ≤50mm, and a sustained-release layer 3 is provided at the bottom of the absorption layer 2. A sustained-release capsule is provided inside the sustained-release layer 3. The sustained-release capsule is round, oval, irregular, etc. The sustained-release capsule contained in the sustained-release layer 3 releases biomass small molecules with healing effects by absorbing human body temperature, and has the functions of reducing swelling and relieving pain, coagulation, reducing swelling and itching, and reducing scars on the wound surface; the particle size of the sustained-release capsule is ≤0.1mm, the thickness of the sustained-release layer 3 is ≤2mm, and a gel layer 4 is provided at the bottom of the sustained-release layer 3.
[0032] See also Figure 1 and Figure 2 A reminder layer 5 is provided on the outside of the breathable surface layer 1. The reminder layer 5 is provided on the outside of the breathable surface layer 1, the absorption layer 2 and the sustained-release layer 3. A gel layer 2 6 is provided on the outside of the gel layer 1 4. The reminder layer 5 is fixedly connected to the top of the gel layer 2 6. The reminder layer 5 is adhered to the skin surface through the gel layer 2 6, so that the reminder layer 5 can be easily torn off and replaced. The reminder layer 5 is reflective paper. The reflective paper improves the visibility of the wound patch and avoids touching the wound when it is invisible at night, thereby protecting the wound. The gel layer 1 4 and the gel layer 2 6 are both polypeptide carboxymethyl cellulose. The polypeptide carboxymethyl cellulose is self-adhesive and can fit well with the skin without other adhesives. It has good antibacterial, anti-adhesion and muscle-growing effects.
[0033] The implementation principle of the embodiment of the present application is as follows: gel layer 1 4 and gel layer 2 6 are both polypeptide carboxymethyl cellulose, which is self-adhesive and can fit well with the skin without any other adhesive, and has excellent antibacterial, anti-adhesion and muscle-growing effects. The absorption layer 2 can quickly absorb small molecules of blood, filth and pus, and at the same time has the function of adsorbing and removing rotten odors; sustained-release capsules are arranged inside the sustained-release layer 3, and the sustained-release capsules contained in the sustained-release layer 3 release small biomass molecules with healing effects by absorbing human body temperature, and have the functions of reducing swelling and pain, coagulation, reducing swelling and itching, and reducing scars on the wound surface.
[0034] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A multifunctional composite wound dressing, comprising a breathable surface layer (1), characterized in that: An absorption layer (2) is provided at the bottom of the breathable surface layer (1), a sustained-release layer (3) is provided at the bottom of the absorption layer (2), a gel layer (4) is provided at the bottom of the sustained-release layer (3), and a reminder layer (5) is provided on the outside of the breathable surface layer (1).
2. The multifunctional composite wound dressing according to claim 1, characterized in that: A second gel layer (6) is provided on the outer side of the first gel layer (4), and the reminder layer (5) is fixedly connected to the top of the second gel layer (6).
3. The multifunctional composite wound dressing according to claim 1, characterized in that: The breathable surface layer (1) is a breathable and waterproof polyurethane film, and the thickness of the breathable surface layer (1) is ≤0.5 mm.
4. The multifunctional composite wound dressing according to claim 1, characterized in that: The absorption layer (2) is a polyurethane sponge, and a porous skeleton (21) is provided inside the absorption layer (2), wherein the porous skeleton (21) is composed of carbon nanotubes (211) and a conductive grid (212), and the thickness of the absorption layer (2) is ≤50 mm.
5. The multifunctional composite wound dressing according to claim 1, characterized in that: A sustained-release capsule is provided inside the sustained-release layer (3), and the sustained-release capsule is round or oval.
6. The multifunctional composite wound dressing according to claim 1, characterized in that: The particle size of the sustained-release capsule is ≤0.1 mm, and the thickness of the sustained-release layer (3) is ≤2 mm.
7. The multifunctional composite wound dressing according to claim 1, characterized in that: The reminder layer (5) is reflective paper, and the gel layer 1 (4) and the gel layer 2 (6) are both polypeptide carboxymethyl cellulose.