Inherently antimicrobial quaternary amine hydrogel wound dressings
First Claim
1. A method for treating a wound with an inherently antimicrobial dressing comprising the steps of:
- (a) providing a hydrogel containing from about 15 to 95 percent by weight of an inherently antimicrobial cationic quaternary amine acrylate polymer of the formula;
##STR7## wherein n is an integer of 2 to 3;
R'"'"', R" and R'"'"'" are independently selected from the group consisting of H, C1 to C16 alkyl, aryl, arylamine, alkylamine, alkaryl and aralkyl;
X is selected from the group consisting of O and NH;
Y- is an acceptable anionic counterion to the N+ of the quaternary amine and m is an integer greater than 50,000 in a form suitable to cover the wound;
(b) applying said wound dressing to said wound whereby said dressing enhances the serility of the wound environment, absorbs exudate from said wound and retains said wound in a moist condition.
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Abstract
A composition and method for treating a wound with an inherently antimicrobial dressing. The dressing is a hydrogel containing from about 15 to 95 percent, and preferably from about 61 to 90 percent, by weight of a cationic quaternary amine acrylate polymer prepared by the polymerization of acryloyloxyethyl(or propyl)-trialkyl(or aryl)-substituted ammonium salts or acrylamidoethyl(or propyl)-trialkyl(or aryl)-substituted ammonium salts. The antimicrobial hydrogels are non-irritating to the wound, absorb wound exudate, and, due to the inherently antimicrobial properties, enhance the sterile environment around the wound. The hydrogels have sufficient adhesive properties that loose contact with the wound is assured but can also be removed without leaving any gel residue on the wound. The wound dressings are preferably formed on a substrate, such as a web or patch, for ease in application to and removal from the wound. If desired, additional antimicrobial or other pharmaceutically active agents can also be incorporated into the hydrogel structure.
125 Citations
15 Claims
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1. A method for treating a wound with an inherently antimicrobial dressing comprising the steps of:
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(a) providing a hydrogel containing from about 15 to 95 percent by weight of an inherently antimicrobial cationic quaternary amine acrylate polymer of the formula;
##STR7## wherein n is an integer of 2 to 3;
R'"'"', R" and R'"'"'" are independently selected from the group consisting of H, C1 to C16 alkyl, aryl, arylamine, alkylamine, alkaryl and aralkyl;
X is selected from the group consisting of O and NH;
Y- is an acceptable anionic counterion to the N+ of the quaternary amine and m is an integer greater than 50,000 in a form suitable to cover the wound;(b) applying said wound dressing to said wound whereby said dressing enhances the serility of the wound environment, absorbs exudate from said wound and retains said wound in a moist condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification