Composition comprising antimicrobial metal ions and a quaternary cationic surfactant
AssigneeConvatec Technologies Inc.
InventorDavid PARSONS
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Abstract
The present invention relates to an antimicrobial composition suitable for use on skin and wounds comprising a source of an antimicrobial metal ion and a quaternary cationic surfactant.
Claims15
An antimicrobial composition for treating wound bacteria in a biofilm, the composition comprising ionic silver, EDTA at a level of from 0.01% to 10% by weight, and a quaternary cationic surfactant, wherein the quaternary cationic surfactant is present at a level of more than or equal to 0.025% by weight, wherein the composition has a pH from 4 to 8, wherein the ionic silver, the EDTA, and the quaternary cationic surfactant are present in the composition in amounts that provide synergistic antimicrobial activity against the wound bacteria, and wherein the composition is in the form of a thin soluble film, the thin soluble film being suitable for lamination to a wound dressing.
A process for making an antimicrobial wound dressing comprising:
- (i) obtaining an absorbent wound dressing, and
- (ii) treating the wound dressing with an antimicrobial composition in the form of a thin soluble film, the thin soluble film being laminated to the wound dressing and for treating wound bacteria in a biofilm, wherein the composition comprises ionic silver, EDTA at a level of from 0.01% to 10% by weight, and a quaternary cationic surfactant, wherein the quaternary cationic surfactant is present at a level of more than or equal to 0.025% by weight, wherein the composition has a pH from 4 to 8, and wherein the ionic silver, the EDTA, and the quaternary cationic surfactant are present in the composition in amounts that provide synergistic antimicrobial activity against the wound bacteria.
Dependencies are inferred from the claim text.