Unlock instant, AI-driven research and patent intelligence for your innovation.
Medical dressing with antibacterial property and preparation method of medical dressing
Pending Publication Date: 2021-11-23
XIANGYA HOSPITAL CENT SOUTH UNIV
View PDF2 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] Zhang Yiwen prepared a lignin / chitosan / PVA hydrogel medical dressing in the article "Preparation and Performance Research of Lignin-Based Wound Dressing". In this dressing, with the increase of lignin content, its hydrophilic However, the anionic groups in lignin will neutralize the cationic groups of chitosan, resulting in higher lignin content, lignin / shell Unsatisfactory antibacterial properties of polysaccharide / PVA hydrogel medical dressings
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0021] A. 4g chitosan is dissolved in the acetic acid solution that 36mL volume concentration is 2%, obtain chitosan solution X after stirring;
[0022] B. Dissolve 8g of PVA in 32g of deionized water and stir at 90°C for 30min to obtain PVA solution Y;
[0023] C. Dissolve 3g of lignosulfonate in 7g of deionized water, stir well to obtain lignosulfonate solution Z;
[0024] D. disperse 0.33g nano-silver in 10g deionized water to form a nano-silver dispersion;
[0025] E. Take 10g of solutions X, Y, and Z respectively, mix and stir with the nano-metal dispersion in step D for 5 hours, pour into the mold, freeze at -18°C for 8 hours, then thaw at room temperature, repeat 5 times to obtain a hydrogel medical dressing .
Embodiment 2
[0027] A. 4g chitosan is dissolved in the acetic acid solution that 36mL volume concentration is 2%, obtain chitosan solution X after stirring;
[0028] B. Dissolve 8g of PVA in 32g of deionized water and stir at 90°C for 30min to obtain PVA solution Y;
[0029] C. Dissolve 3g of lignosulfonate in 7g of deionized water, stir well to obtain lignosulfonate solution Z;
[0030] D. disperse 0.29g nano-zinc in 10g deionized water to form a nano-zinc dispersion;
[0031] E. Take 10g of solutions X, Y, and Z respectively, mix and stir with the nano-metal dispersion in step D for 5 hours, pour into the mold, freeze at -18°C for 8 hours, then thaw at room temperature, repeat 5 times to obtain a hydrogel medical dressing .
Embodiment 3
[0033] A. 4g chitosan is dissolved in the acetic acid solution that 36mL volume concentration is 2%, obtain chitosan solution X after stirring;
[0034] B. Dissolve 8g of PVA in 32g of deionized water and stir at 90°C for 30min to obtain PVA solution Y;
[0035] C. Dissolve 3g of lignosulfonate in 7g of deionized water, stir well to obtain lignosulfonate solution Z;
[0036] D. disperse 0.62g nano-silver in 10g deionized water to form a nano-silver dispersion;
[0037] E. Take 10g of solutions X, Y, and Z respectively, mix and stir with the nano-metal dispersion in step D for 5 hours, pour into the mold, freeze at -18°C for 8 hours, then thaw at room temperature, repeat 5 times to obtain a hydrogel medical dressing .
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention relates to a medical dressing with an antibacterial property and a preparation method of the medical dressing. In order to improve the antibacterial property of a lignin / chitosan / PVA hydrogel medical dressing in the prior art, antibacterial metal nanoparticles are doped into the hydrogel medical dressing. Research shows that along with the increase of the content of the antibacterial particles, the antibacterial property of the medical dressing can also be remarkably improved, and the antibacterial property of metal silver is more excellent than that of metalzinc. Moreover, under a certain condition, the two antibacterial metal particles can also play a synergistic interaction role, so that an unexpected antibacterial effect is achieved.
Description
technical field [0001] The invention relates to the field of medical dressings, in particular to a medical dressing with antibacterial properties and a preparation method thereof. Background technique [0002] Injuries to human skin can generally be divided into two categories: those with tissue defects and those without tissue defects. Medical dressings are medical products used for skin injuries. Traditional medical dressing (natural gauze) has the advantages of strong ability to absorb wound exudate and relatively simple production and processing process, but its permeability is too high, it is easy to dehydrate the early wound and deepen the wound, and it will cause mechanical damage again when it is replaced. Injury, and the risk of late bruise formation is increased due to the injury. When the exudate penetrates the full layer of gauze, microorganisms in the external environment can easily pass through, and there is a high risk of infection. In response to this proble...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More