166 results about "Antimicrobial efficacy" patented technology

An antimicrobial composition that involves a synergistic mixture in terms of active agents, of a primary antimicrobial agent, such as polyhexamethylene biguanide (PHMB), a secondary antimicrobial agent, and optionally an organic acid against various kinds of microbes is described. Various additional processing aids, such as alcohols and surfactants, may also be incorporated within the mixture. The composition allows one to use a significantly less concentration of individual constituent antimicrobial agents to achieve the same or a better degree of antimicrobial efficacy. The antimicrobial composition can be applied to the surface of almost any kind of substrate material, and can achieve a killing-efficacy of about 3 Log₁₀ reduction in microbes within 30 minutes under ambient conditions.

The present invention provides a medical device, preferably a contact lens, which a core material and an antimicrobial metal-containing LbL coating that is not covalently attached to the medical device and can impart to the medical device an increased hydrophilicity. The antimicrobial metal-containing coating on a contact lens of the invention has a high antimicrobial efficacy against microorganisms including Gram-positive and Gram-negative bacterial and a low toxicity, while maintaining the desired bulk properties such as oxygen permeability and ion permeability of lens material. Such lenses are useful as extended-wear contact lenses. In addition, the invention provides a method for making a medical device, preferably a contact lens, having an antimicrobial metal-containing LbL coating thereon.

An antimicrobial composition, including a synergistic combination of three or more agents as an active ingredient. Each of the three or more potentiating agents can be selected from the following types of compounds: sequestering agents, carbohydrates and carbohydrate derivatives, terpenes/terpenoids, amines and amine derivatives, plant-derived oils, sulfonates, phenols, fatty acids, dibenzofuran derivatives, organo isothiocyanates, quaternary ammonium compounds, peroxides and peroxide donors, and macrolide polyenes. At least two of the three or more potentiating agents are not of the same type of compound. The antimicrobial composition can have strong antimicrobial efficacy in control of microorganisms having resistance to currently used antimicrobials.

This invention relates to antimicrobial wound dressings having a non-leaching antimicrobial activity, releasable antimicrobial and antiprotease agents, and a controlled-release bioactive agent such as doxycycline. The Wound dressing material is absorbent and acts as a substrate for antimicrobial and antiprotease agents as well as bioactive agents. More generally, this invention relates to methods and compositions for materials having a non-leaching coating that has antimicrobial properties. The coating is applied to substrates such as gauze-type wound dressings, powders and other substrates. Covalent, non-leaching, non-hydrolyzable bonds are formed between the substrate and the polymer molecules that form the coating. A high concentration of anti-microbial groups on multi-length polymeric molecules and relatively long average chain lengths, contribute to an absorbent or superabsorbent surface with a high level antimicrobial efficacy. Utilization of non-leaching coatings having a plurality of anionic or cationic sites is used according to this invention to bind a plurality of oppositely charged biologically or chemically active compounds, and to release the bound oppositely charged biologically or chemically active compounds from said substrate over a period of time to achieve desired objectives as diverse as improved wound healing to reduction in body odor.

Described herein are glass, ceramic, or glass-ceramic articles having improved antimicrobial efficacy. Further described are methods of making and using the improved articles. The improved articles generally include a glass, ceramic, or glass-ceramic substrate, a compressive stress layer that extends inward from a surface of the glass, ceramic, or glass-ceramic substrate to a first depth therein, and an antimicrobial agent-containing region that extends inward from the surface of the glass, ceramic, or glass-ceramic substrate to a second depth therein.

This invention encompasses an oral composition for treating or preventing dry mouth with following benefits: antibacterial/anti-fungal efficacy, low irritancy, and moisture retention. The compositions can be a toothpaste, a mouth rinse or a spray and include one or more non-ionic surfactants, as foaming agents, one or more broad spectrum anti-microbial ingredient, such as chlorhexidine and cetylpyridinium chloride, and one or more oral surface adhesive polysaccharides that can encage cationic actives to help the deposition and retention of the agents onto oral surfaces and thus provide antimicrobial efficacy.

Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the borate-polyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.

Antimicrobial fabrics having a topically applied silver-based antimicrobial finish are provided. The finish comprises at least one silver ion-containing compound and at least one binder compound. The antimicrobial fabric may be formed into a garment to be worn as a base layer garment, close to the skin, which aids in the prevention of skin infection caused by abrasions to the skin. The garment may also aid in preventing the transfer of microbes from one person to another, for instance, after sharing communal items such as protective athletic equipment. The antimicrobial fabric exhibits long lasting antimicrobial efficacy against both Gram positive and Gram negative microbes and also exhibits antimicrobial efficacy after repeated wash cycles. Also provided is a method for making the silver-containing antimicrobial fabric.

A vaginal treatment composition that employs a therapeutic agent to inhibit and/or treat vaginal infection is provided. The therapeutic agent is capable of inhibiting and/or killing Gardnerella (e.g., Gardnerella vaginalis), Candida (e.g., Candida albicans), and/or Trichomonas (e.g., Trichomonas vaginalis) pathogens. Desirably, such antimicrobial efficacy is achieved without substantially inhibiting the growth of Lactobacillus acidophilus. For instance, sugars and/or sugar alcohols may be employed in the present invention as a therapeutic agent for inhibiting and/or treating vaginal infection. In one particular embodiment, D-xylitol is used as the therapeutic agent.

The invention described herein provides an extended resident topical antimicrobial composition comprising an active antimicrobial and moisturizing ingredients that meets antimicrobial efficacy requirements and improves the condition of the user's skin as well. The composition of the invention achieves desired antimicrobial efficacy and therapeutic effect and still exhibits a relatively short dry time to avoid unpleasant feel. The composition of the invention comprises: a) an antimicrobial agent; and b) a moisturization component comprising a combination of a saccharide isomerate and carbohydrate complex together with glycerin. In a preferred embodiment, the antimicrobial agent is a broad spectrum antimicrobial agent such as alcohol. The invention is particularly useful to healthcare workers, whose usage of hand sanitizers can be on a daily and frequent basis.

Antimicrobial compositions are provided that include a hydroalcoholic solvent system comprising a lower C₂-C₅ alcohol and water; a cationic antimicrobial agent such as chlorhexidine gluconate; a fatty component containing at least one free hydroxyl group, such as a C₁₂-C₂₁ fatty alcohol, a C₁₂-C₂₁ fatty ester, a C₁₂-C₂₁ fatty ether, a C₁₂-C₂₁ fatty amide, and combinations thereof; and optionally an emollient ester such as diesters of bibasic acids and triesters of citric acid. The compositions described herein display improved antimicrobial efficacy and improved cosmetic elegance.

An antimicrobial hand wash includes a soap, an antimicrobial agent, and an amine salt. The amine salt is found to increase the antimicrobial efficacy of the hand wash. The amine salt produced through the reaction of monoethanolamine and lactic acid is of particular interest as a soap addition. In processes of this invention, it is possible to create the desired amine salt in the soap in situ.

Hand sanitizers are provided with improved aesthetics and skin-conditioning effects, such that healthcare workers and others subject to high frequency hand hygiene requirements are encouraged to comply with said requirements. The hand sanitizers provide excellent antimicrobial efficacy and skin conditioning benefits that actually increase with increased frequency of use. The sanitizing compositions are hydroalcoholic, and contain a synergistic combination of skin-conditioning agents.

Antimicrobial fabrics having a topically applied silver-based antimicrobial finish are provided. The finish comprises at least one silver ion-containing compound and at least one binder compound. The antimicrobial fabric may be formed into a garment to be worn as a base layer garment, close to the skin, which aids in the prevention of skin infection caused by abrasions to the skin. The garment may also aid in preventing the transfer of microbes from one person to another, for instance, after sharing communal items such as protective athletic equipment. The antimicrobial fabric exhibits long lasting antimicrobial efficacy against both Gram positive and Gram negative microbes and also exhibits antimicrobial efficacy after repeated wash cycles. Also provided is a method for making the silver-containing antimicrobial fabric.

Antimicrobial compositions are provided that include a hydroalcoholic solvent system comprising a lower C₂-C₅ alcohol and water; a cationic antimicrobial agent such as chlorhexidine gluconate; a hydrophobic polymer soluble in the lower alcohol; an emollient ester such as diesters of bibasic acids and triesters of citric acid; and an optional fatty component containing at least one free hydroxyl group, such as a C₁₂-C₂₁ fatty alcohol, a C₁₂-C₂₁ fatty ester, a C₁₂-C₂₁ fatty ether, a C₁₂-C₂₁ fatty amide, and combinations thereof. The compositions described herein display improved antimicrobial efficacy and improved cosmetic elegance.

The invention reveals a preparation method of a nano coating, which employs plasma discharge for pretreating a substrate, an organic monomer with polymerization capability is introduced in a plasma cavity in a gas form to generate the organic monomer plasma, the polymerization is generated in the plasma cavity to generate the polymer plasma, and polymer plasma is deposited on the substrate surface to form the polymerization deposition of the nano coating. The invention also comprises an antibiosis nano layer prepared by the method of the invention. The nano coating and a substrate material can be combined with firm covalent bond to realize non-pharmacological antibiosis; compared with a traditional antibiosis coating, the antibiosis nano coating has the advantages of low cost and safe usage; the method of the invention can keep most characteristic groups of the organic monomer, and is in favor of design of antibiosis efficacy of the nano coating; and the antibiosis nano coating can keep killing or opposing a plurality of bacteria and mould in a long time, and the antibiosis effect is good, and the antimicrobial spectrum is wide.

Disclosed is a wood preservative composition comprising micronized copper and copper-amine complex, wherein the copper component of the copper amine complex is from about 5% to about 50% by weight, based upon the total weight of copper in the composition. The copper amine complex serves to avoid wood surface “chalking” that is otherwise attributable to the presence of micronized copper in copper-based slurries used to treat wood products. In addition, the copper-amine complex enhances the antimicrobial efficacy of the composition when used in wood treatment applications by facilitating cell wall penetration of the treated wood.