Compobite nanometer antibiosis medical dressing

A nanomaterial and nanotechnology, applied in the field of medical material manufacturing, can solve the problems of low density, poor adsorption performance, limited antibacterial performance, etc., and achieve the effect of increasing adsorption density, promoting wound healing, and improving bacteriostatic effect.

Inactive Publication Date: 2007-11-07
窦修平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of preparing pure silver particles is very high, and the flexible fabrics used in cloth and traditional technology, on the one hand, make the adsorption rate of nano-silver too low, resulting in large waste, and on the other hand, make nano-antibacterial cloth or nano-antibacterial flexible The antibacterial performance of the fabric is limited due to the low density of adsorbed nanosilver
In addition, due to the poor adsorption performance of the previous nano-silver attachment materials, the adhesion is slow, resulting in the re-assembly of nanoparticles into larger particles, which affects the effect of nano-silver.

Method used

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  • Compobite nanometer antibiosis medical dressing
  • Compobite nanometer antibiosis medical dressing
  • Compobite nanometer antibiosis medical dressing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Refer to accompanying drawings 1 and 3. The functional part of the composite nano medical dressing is divided into two layers, that is, the antibacterial layer 1 and the supporting layer 2 .

[0035] The antibacterial layer is composed of nano-antibacterial materials on spunlace non-woven fabrics or carbon fibers. Using the high-adsorption mechanism of high-antibacterial composite nano-materials and spunlace non-woven fabrics or carbon fibers, in the state of spraying, through the spunlace cloth Or the high adsorption of carbon fibers, so that the composite nanoparticles quickly adhere to the surface and gaps of the spunlace cloth or carbon fibers, maintaining high density, uniform distribution and the composite nanoparticles are not easy to reassemble into larger particles, thereby improving the activity of the composite nanoparticles ( See accompanying drawing 2, scanning electron microscope picture). Thereby, the broad-spectrum, high-efficiency, and safe bactericida...

Embodiment 2

[0043] Refer to accompanying drawing 2. The functional part of the composite nano medical dressing is divided into two layers, that is, the antibacterial layer 3 and the support layer 4 .

[0044] Prepare the carbon fiber antibacterial layer with the method of Example 1, and then the antibacterial layer is fixed on the support layer with glue (wherein the glue is connected with a non-toxic adhesive). A circular medical antibacterial dressing with composite functions is prepared.

Embodiment 3

[0046] The composite nano-medical dressing prepared in Example 1 can absorb harmful substances such as bacteria to its surface and internal antibacterial zone through the high adsorption performance of spunlace cloth or carbon fiber, thereby more fully realizing antibacterial performance. The effect is shown in the table below:

[0047]

Test bacteria

The diameter of the inhibition zone of various pieces of test bacteria (mm)

negative control antibacterial

serial number

1

2

3

4

average

Ring diameter (mm)

Golden

Staphylococcus

1

2

3

11.02

11.06

10.72

12.18

11.68

10.80

11.92

12.04

11.16

12.68

11.02

10.96

11.95

11.45

10.91

0

0

0

large intestine

bacillus

1

2

3

9.28

8.02

7.84

9.36

8.08

7.96

9.02

8.16

8.04

9.75

7.94

8.12

...

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Abstract

A composite nano-class antibacterial dressing for medical purpose is composed of an antibacterial layer and a supporting layer. Said antibacterial layer consists of the non-woven cloth or carbon fibre adsorption material and the ZnO nanoparticles containing positive Ag ions. Its advantages are broad spectrum, strong bactericiding power, and long service life.

Description

technical field [0001] The invention belongs to the technical field of medical material manufacture, in particular to a composite nanometer antibacterial medical dressing with high antibacterial and high adsorption properties. Background technique [0002] Nanomaterials have outstanding functional characteristics due to quantum size effects, surface effects, and dielectric confinement effects. In the field of biomedical materials technology, how to optimize the function of nanomaterials and realize the miniaturization and stability of nanoparticles has always been an important issue. It is the goal pursued by medical nanomaterials. [0003] At present, in the field of development of advanced medical antibacterial materials, nanomaterials have shown outstanding comprehensive qualities superior to traditional materials. For example, broad-spectrum, efficient and safe nano-antibacterial silver particles have been developed for use in antibacterial cloth and antibacterial fabri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/00A61F13/00
Inventor 窦修平阚延静沈嵘汪新雨
Owner 窦修平
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