Medical liquid filtering membrane capable of reducing organic matter adsorption

Abstract

The utility model discloses a medical liquid filter membrane capable of reducing organic matter adsorption, which relates to the technical field of liquid filter membranes and comprises a base layer, a filter fiber layer is adhered to the top of the base layer, and the filter fiber layer comprises a first nanofiber layer, a second nanofiber layer and a third nanofiber layer. When the medical liquid filtering membrane capable of reducing the adsorption of the organic matters is used, the whole filtering fiber layer is arranged in a manner of mutually stacking three layers of nanometer fiber layers, the pore diameters of the filtering holes in each layer are different, and the filtering holes in each layer are also arranged in a staggered manner; through the design of a multi-layer structure and gradient pore size distribution, the filtering effect of the whole filtering fiber layer can be improved, and each nanofiber layer is coated with a silver ion antibacterial layer and a copper ion antibacterial layer, so that the antibacterial effect of the medical liquid filtering membrane can be improved; therefore, bacteria are not easy to adsorb on the liquid filtering membrane to cause blockage of the whole liquid filtering membrane.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid filter membrane technical field, concretely is a kind of medical liquid filter membrane that can reduce organic adsorption. BACKGROUND

[0002] Nanofiber medical liquid filter membrane utilizes the fine structure of nanofiber material to capture extremely small pathogen particles, and is particularly suitable for liquid filtration in high-risk infection control environments, such as intravenous infusion and dialysis, fluid processing in biopharmaceuticals, and purification processing of body fluids in some specific cases.

[0003] The existing medical liquid filter membrane, in order to reduce production cost, only coats an antibacterial material during production, although it can play an antibacterial role, but due to only one antibacterial material, the antibacterial effect of the whole liquid filter membrane is not good, and some bacteria will adhere to or pass through the liquid filter membrane, thereby affecting the use effect of the whole liquid filter membrane. SUMMARY

[0004] The utility model discloses a kind of medical liquid filter membranes that can reduce organic adsorption, to solve the problem that bacteria are easily attached or pass through liquid filter membrane due to the antibacterial effect of the medical liquid filter membrane used now not being good as described in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of medical liquid filter membrane that can reduce organic adsorption, comprising: base layer, the top of the base layer is pasted with filter fiber layer;

[0006] The filter fiber layer includes a first nanofiber layer, a second nanofiber layer and a third nanofiber layer, and filter holes are formed on the surfaces of the first, second and third nanofiber layers.

[0007] Preferably, the top of the first, second and third nanofiber layers is coated with a silver ion antibacterial layer and a copper ion antibacterial layer.

[0008] Preferably, the diameter of the intermediate filter holes in the first nanofiber layer is greater than that in the second nanofiber layer.

[0009] Preferably, the diameter of the intermediate filter holes in the second nanofiber layer is greater than that in the third nanofiber layer.

[0010] Preferably, the bottom of the base layer is provided with a reinforcing layer, and the top of the filter fiber layer is coated with a hydrophilic coating.

[0011] Preferably, the hydrophilic coating is uniformly coated on the filter fiber layer.

[0012] Compared with the prior art, the medical liquid filtering membrane capable of reducing organic matter adsorption has the advantages that: when in use, the entire filtering fiber layer is arranged in a three-layer nano fiber layer stacking manner, the pore diameters of the filtering holes of each layer are different, and the filtering holes of each layer are arranged in a staggered manner, the multi-layer structure and gradient pore diameter distribution design can increase the filtering effect of the entire filtering fiber layer, and the silver ion antibacterial layer and the copper ion antibacterial layer are coated on each nano fiber layer, so that the antibacterial effect of the medical liquid filtering membrane is improved, bacteria are not easy to be adsorbed on the liquid filtering membrane to cause blockage of the entire liquid filtering membrane, which is the use feature of the medical liquid filtering membrane capable of reducing organic matter adsorption.

[0013] 1. The medical liquid filtering membrane capable of reducing organic matter adsorption is arranged in a multi-layer structure of the entire filtering fiber layer, and filtering holes of different sizes are arranged in a staggered manner, so that the filtering effect of the entire filtering fiber layer is increased, and the antibacterial effect of the medical liquid filtering membrane is improved in cooperation with the silver ion antibacterial layer and the copper ion antibacterial layer.

[0014] 2. The medical liquid filtering membrane capable of reducing organic matter adsorption is provided with a base layer and a reinforcing layer at the bottom of the entire liquid filtering membrane, the base layer and the reinforcing layer can support the entire liquid filtering membrane, increase the strength of the entire liquid filtering membrane, and improve the filtering efficiency and flux in cooperation with the hydrophilic coating layer at the top of the filtering fiber layer, so that the liquid filtering membrane is not easy to be blocked. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the filtering fiber layer of the utility model;

[0016] Figure 2 It is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the main structure of the filtering fiber layer of the utility model.

[0018] In the drawing: 1, base layer; 2, filtering fiber layer; 201, first nano fiber layer; 202, second nano fiber layer; 203, third nano fiber layer; 204, filtering hole; 205, silver ion antibacterial layer; 206, copper ion antibacterial layer; 3, reinforcing layer; 4, hydrophilic coating layer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, 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 those skilled in the art without creative work fall within the scope of the present application.

[0020] Please refer to Figure 1 The present application provides a technical scheme: a medical liquid filter film capable of reducing organic matter adsorption, comprising: a base layer 1, a filter fiber layer 2 is attached to the top of the base layer 1;

[0021] The filter fiber layer 2 comprises a first nanofiber layer 201, a second nanofiber layer 202 and a third nanofiber layer 203, and filter holes 204 are formed on the surfaces of the first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203. Silver ion antibacterial layers 205 and copper ion antibacterial layers 206 are coated on the top of the first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203. The diameter of the filter holes 204 in the first nanofiber layer 201 is greater than that in the second nanofiber layer 202, and the diameter of the filter holes 204 in the second nanofiber layer 202 is greater than that in the third nanofiber layer 203. The filter holes 204 in the first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203 are arranged in a staggered manner.

[0022] In specific implementation, the medical liquid filter film capable of reducing organic matter adsorption is mainly composed of the first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203, and filter holes 204 are formed in the middle of the first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203. The filter holes 204 in the entire filter fiber layer 2 are arranged from large to small in diameter and upward, and the filter holes 204 in each layer are arranged in a staggered manner. Therefore, the use of multiple nanofiber layers in combination with filter holes 204 of different sizes arranged in a staggered manner can increase the filtering effect of the entire liquid filter film, and can intercept pathogens of different sizes through filter holes 204 of different sizes and ensure air circulation.

[0023] The first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203 are all processed by electrospinning and vacuum coating technology, so as to ensure uniform distribution of nanometer particles and improve the stability and adhesion of the antibacterial layer.

[0024] The top of the first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203 is coated with a silver ion antibacterial layer 205 and a copper ion antibacterial layer 206. The silver ions in the silver ion antibacterial layer 205 kill bacteria by destroying cell walls and cell membranes and interfering with protein synthesis. The copper ions in the copper ion antibacterial layer 206 kill bacteria by causing oxidative stress, damaging cell membranes and intracellular enzyme systems. Coating the silver ion antibacterial layer 205 and the copper ion antibacterial layer 206 on each nanofiber layer increases the antibacterial effect of the entire filter fiber layer 2 and effectively inhibits the growth of pathogens.

[0025] Referring to Figures 1-3 As can be seen, the entire filter fiber layer 2 adopts a multi-layer nanofiber layer structure, and the filter holes 204 in each layer have different pore diameters and are arranged in a staggered manner. Therefore, the filtering effect of the entire filter fiber layer 2 can be increased, and the antibacterial effect of the entire filter fiber layer 2 can be improved with the silver ion antibacterial layer 205 and the copper ion antibacterial layer 206.

[0026] The bottom of the base layer 1 is provided with a reinforcing layer 3, and the top of the filter fiber layer 2 is coated with a hydrophilic coating 4. The hydrophilic coating 4 is uniformly coated on the filter fiber layer 2, and the reinforcing layer 3 is mainly made of polyester fiber.

[0027] In specific implementation, the medical liquid filter film capable of reducing organic matter adsorption is provided. The main material of the reinforcing layer 3 at the bottom of the base layer 1 is polyester fiber, which has good mechanical strength and durability, thereby increasing the strength of the entire base layer 1. The main material of the base layer 1 is polypropylene, which can support the nanofiber layer in the filter fiber layer 2 and ensure the integrity of the entire filter film. The main material of the hydrophilic coating 4 is polyvinyl alcohol, which can form a dense and uniform coating, thereby improving the hydrophilicity of the liquid filter film, enabling the liquid filter film to better contact with liquid, improving the filtering efficiency and flux, and reducing the blocking phenomenon.

[0028] Referring to Figures 1-3 As can be seen, the entire liquid filter film can support the nanofiber layer at the top through the base layer 1 and the reinforcing layer 3 at the bottom, thereby increasing the strength of the entire liquid filter film. In combination with the hydrophilic coating 4, the filtering efficiency and flux can be improved, and the liquid filter film is less likely to be blocked.

[0029] In summary, the medical liquid filtration membrane capable of reducing organic adsorption can be used by stacking and bonding the first nanofiber layer 201, the second nanofiber layer 202 and the third nanofiber layer 203 into one layer, then bonding the base layer 1 and the reinforcing layer 3 on the bottom layer, and finally coating the hydrophilic coating 4 on the top. At this time, the entire liquid filtration membrane can be normally used in the core filtration module of the operating room and isolation ward air purification, laboratory clean environment and medical air purification system. This is the use characteristics of the medical liquid filtration membrane capable of reducing organic adsorption. The contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A medical fluid filtration membrane that reduces adsorption of organic matter, comprising: Base layer (1) characterized in that: the top of the base layer (1) is pasted with a filter fiber layer (2); The filter fiber layer (2) comprises a first nanofiber layer (201), a second nanofiber layer (202) and a third nanofiber layer (203), and the surfaces of the first nanofiber layer (201), the second nanofiber layer (202) and the third nanofiber layer (203) are provided with filter holes (204).

2. The medical fluid filtration membrane of claim 1, wherein: The top of the first nanofiber layer (201), the second nanofiber layer (202) and the third nanofiber layer (203) is coated with a silver ion antibacterial layer (205) and a copper ion antibacterial layer (206).

3. The medical fluid filtration membrane of claim 1, wherein: The diameter of the filter hole (204) in the first nanofiber layer (201) is greater than that in the second nanofiber layer (202).

4. The medical fluid filtration membrane of claim 1, wherein: The diameter of the filter hole (204) in the second nanofiber layer (202) is greater than that in the third nanofiber layer (203).

5. The medical fluid filtration membrane of claim 1, wherein: The bottom of the base layer (1) is provided with a reinforcing layer (3), and the top of the filter fiber layer (2) is coated with a hydrophilic coating (4).

6. The medical fluid filtration membrane of claim 5, wherein the membrane is capable of reducing adsorption of organic matter. The hydrophilic coating (4) is uniformly coated on the filter fiber layer (2).

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