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Wound dressing comprising an antimicrobial composition

A wound dressing and antimicrobial technology, which can be used in drug combinations, bandages, skin diseases, etc., and can solve intractable problems

Inactive Publication Date: 2021-06-15
CONVATEC TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also recognized that wound bacteria are often present in biofilms, making these bacteria more difficult to deal with than their planktonic counterparts

Method used

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  • Wound dressing comprising an antimicrobial composition
  • Wound dressing comprising an antimicrobial composition
  • Wound dressing comprising an antimicrobial composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Effect of Moisture Content on Tensile Strength of Silver-Containing Wound Dressings of the Invention

[0034] Dressings of the present invention are prepared by modifying solvent spun cellulose tow to a degree of substitution of 0.3 to form carboxymethylcellulose, neutralized with an organic acid to a pH of 5.5. 1.2% silver cations are added by an ion exchange process in bulk organic solvents such as by the process described in EP1343510, washed in an aqueous organic solution containing sodium chloride and disodium EDTA for photostabilization and introduction of about 0.4% EDTA. This was followed by a wash in an organic solvent wash containing a fiber finishing agent including Tween 20 and benzethonium chloride (to yield 0.135% benzethonium chloride on the finished product). Warm-air drying, cutting into staple fibers and processing into nonwoven mats by carding and needling. Dressings were cut to size from the felt and packaged in heat-sealed aluminum foil pouches imp...

Embodiment 2

[0059] Effect of Moisture Content on Compliance of Examples of Silver-Containing Wound Dressings of the Invention

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PUM

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Abstract

The invention relates to a wound dressing comprising an antimicrobial composition. Methods, processes and compositions are provided for improved wound dressings comprising an antimicrobial composition. The wound dressings maintain conformability and strength, as well as antimicrobial performance, upon use after storage.

Description

[0001] This application is a divisional application of the parent case with application number 201480028155.4. The filing date of the parent case is May 15, 2014; the title of the invention is "Wound Dressing Comprising Antimicrobial Composition". [0002] cross reference [0003] This application claims the benefit of priority from GB 1308770.5, filed 15 May 2013, which is hereby incorporated by reference in its entirety. technical field [0004] The present invention relates to a wound dressing comprising an antimicrobial composition, wherein said dressing can be applied to the skin, wound, cut, abrasion or burn for the prevention or treatment of infection. More specifically, the present invention relates to dressings capable of providing effective antimicrobial activity while avoiding wound and skin irritation and delay in wound healing. The present invention particularly relates to dressings comprising chemically modified cellulose fibers comprising an antimicrobial com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/28A61L15/18A61L15/46A61L15/44A61L15/20
CPCA61L15/46A61L2300/102A61L2300/208A61L15/28A61P17/02C08L1/04A61L15/18A61L15/20A61L15/44A61L2300/104A61L2300/404
Inventor D.帕森斯C.莱杰
Owner CONVATEC TECH INC
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