Polymer compositions containing colloids of silver salts
First Claim
1. An article of manufacture comprising a substrate and an antimicrobial polymer coating, wherein the polymer coating comprises one or more polymers and a colloid, wherein the colloid comprises oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one metal salt and at least one metal oxide.
1 Assignment
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Reexamination
Accused Products
Abstract
The present invention relates to antimicrobial compositions, methods for the production of these compositions, and use of these compositions with medical devices, such as catheters, and implants. The compositions of the present invention advantageously provide varying release kinetics for the active ions in the compositions due to the different water solubilities of the ions, allowing antimicrobial release profiles to be tailored for a given application and providing for sustained antimicrobial activity over time. More particularly, the invention relates to polymer compositions containing colloids comprised of salts of one or more oligodynamic metal, such as silver. The process of the invention includes mixing a solution of one or more oligodynamic metal salts with a polymer solution or dispersion and precipitating a colloid of the salts by addition of other salts to the solution which react with some or all of the first metal salts. The compositions can be incorporated into articles or can be employed as a coating on articles such as medical devices.
444 Citations
48 Claims
- 1. An article of manufacture comprising a substrate and an antimicrobial polymer coating, wherein the polymer coating comprises one or more polymers and a colloid, wherein the colloid comprises oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one metal salt and at least one metal oxide.
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13. An article of manufacture comprising a composition comprising one or more polymers and a colloid wherein the colloid comprises oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one metal salt and at least one metal oxide.
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14. A method for the manufacture of an article comprising applying a coating composition to a substrate by spraying the coating composition onto the substrate or by dipping the substrate into the coating composition, wherein the coating composition comprises polymers, monomers, or any combination thereof, and a colloid, wherein the colloid comprises oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one salt and at least one metal oxide.
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15. A method comprising the steps of:
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1) forming a composition that comprises a solution, dispersion, or combination thereof of one or more polymers containing a colloid wherein the colloid comprises oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one metal salt and at least one metal oxide, and 2) drying the composition. - View Dependent Claims (16)
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17. A method comprising:
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1) forming a composition that comprises a solution, dispersion, or combination thereof of one or more polymers containing a colloid wherein the colloid comprises oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one metal salt and at least one metal oxide;
2) compounding the composition formed in (1) with one or more polymers; and
3) processing the composition formed in (2) with the application of heat.
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18. A method for the manufacture of an article comprising dipping a form in a composition comprising polymers, monomers, or any combination thereof, and a colloid comprising oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one metal salt and at least one metal oxide.
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19. A method for the manufacture of an article comprising casting a composition comprising polymers, monomer, or any combination thereof, and a colloid comprising oligodynamic metal compounds, wherein the oligodynamic metal compounds are a plurality of metal salts, a plurality of metal oxides, or a combination of at least one metal salt and at least one metal oxide.
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22. An article of manufacture comprising a substrate and an antimicrobial polymer coating located on one or more exposed surfaces of the article, wherein:
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the polymer coating comprises one or more polymers and a colloid, wherein the colloid comprises one or more oligodynamic metal compounds, wherein the oligodynamic metal compounds are at least one metal salt, at least one metal oxide, or a combination of at least one metal salt and at least one metal oxide; and
the article comprises a medical device. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for the manufacture of an article comprising:
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applying a coating composition to a substrate by spraying the coating composition onto the substrate or by dipping the substrate into the coating composition wherein the coating composition comprises polymers, monomers, or any combination thereof, and a colloid, wherein the colloid comprises one or more oligodynamic metal compounds, wherein the oligodynamic metal compounds are at least one metal salt, at least one metal oxide, or a combination of at least one metal salt and at least one metal oxide; and
,allowing the coating composition to form a covering on an exposed surface of the substrate;
wherein the article comprises a medical device.
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35. A method comprising the steps of:
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1) forming a composition that comprises a solution, dispersion, or combination thereof of one or more polymers containing a colloid wherein the colloid comprises one or more oligodynamic metal compounds, wherein the one or more oligodynamic metal compounds are at least one metal salt, at least one metal oxide, or a combination of at least one metal salt and at least one metal oxide; and
2) drying the composition;
wherein the method results in formation of a medical device comprising the composition located on at least one exposed surface. - View Dependent Claims (36)
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37. A method for the manufacture of an article comprising:
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1) forming a composition that comprises a solution, dispersion, or a combination thereof of one or more polymers containing a colloid wherein the colloid comprises one or more oligodynamic metal compounds, wherein the oligodynamic metal compounds are at least one metal salt, at least one metal oxide, or a combination of at least one metal salt and at least one metal oxide;
2) compounding the composition formed in (1) with one or more polymers; and
3) processing the composition formed in (2) with the application of heat;
wherein the article comprises a medical device and the composition formed in step (2) is located on at least one exposed surface of the article.
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38. A method for the manufacture of an article comprising dipping a form in a composition comprising polymers, monomers, or any combination thereof and a colloid comprising one or more oligodynamic metal compounds, wherein:
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the oligodynamic metal compounds are at least one metal salt, at least one metal oxide, or a combination of at least one metal salt and at least one metal oxide;
the composition is located on at least one exposed surface of the article; and
,the article comprises a medical device.
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39. A method for the manufacture of an article comprising casting a composition comprising polymers, monomers, or any combination thereof, and a colloid comprising one or more oligodynamic metal compounds, wherein:
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the oligodynamic metal compounds are at least one metal salt, at least one metal oxide, or a combination of at least one metal salt and at least one metal oxide;
the composition is located on at least one exposed surface of the article; and
,the article comprises a medical device.
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40. An article of manufacture comprising a substrate and an antimicrobial polymer coating located on one or more exposed surfaces of the article, wherein:
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the polymer coating comprises a polyvinyl chloride, a polyurethane-urea block copolymer and a colloid;
the substrate comprises a polyvinyl chloride;
the colloid comprises silver chloride; and
the article comprises an endotracheal tube.
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41. An article of manufacture comprising a substrate and an antimicrobial polymer coating located on one or more exposed surfaces of the article, wherein:
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the polymer coating comprises a polyurethane-urea block copolymer, silver nitrate, and a colloid;
the substrate comprises latex;
the colloid comprises silver chloride; and
the article comprises a Foley catheter.
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42. An article of manufacture comprising a composition comprising one or more polymers and a colloid wherein the colloid comprises one or more oligodynamic metal compounds, wherein:
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the oligodynamic metal compounds are at least one metal salt, at least one metal oxide, or a combination of at least one metal salt and at least one metal oxide;
at least some of the composition is located at an exposed surface of the article; and
the article comprises a medical device.
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43. An article of manufacture comprising a substrate and an antimicrobial polymer coating located one one or more exposed surfaces of the article, wherein:
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the polymer coating comprises one or more polymers and a colloid, wherein the colloid comprises one or more oligodynamic metal salts; and
the article comprises a medical device.
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44. An article of manufacture comprising a substrate and an antimicrobial polymer coating, wherein the polymer coating comprises one or more polymers and a colloid, wherein the colloid comprises a plurality of oligodynamic metal salts.
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45. An article of manufacture comprising a composition comprising one or more polymers and a colloid wherein the colloid comprises a plurality of oligodynamic metal salts.
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46. An article of manufacture comprising a composition comprising one or more polymers and a colloid wherein the colloid comprises one or more oligodynamic metal salts, wherein:
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at least some of the composition is located at an exposed surface of the article; and
the article comprises a medical device.
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47. A method for the manufacture of an article comprising applying a coating composition to a substrate by spraying the coating composition onto the substrate or by dipping the substrate into the coating composition, wherein the coating composition comprises polymers, monomers, or any combination thereof, and a colloid, wherein the colloid comprises a plurality of oligodynamic metal salts.
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48. A method for the manufacture of an article comprising:
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applying a coating composition to a substrate by spraying the coating composition onto the substrate or by dipping the substrate into the coating composition wherein the coating composition comprises polymers, monomers, or any combination thereof, and a colloid, wherein the colloid comprises at least one oligodynamic metal salt; and
,allowing the coating composition to form a covering on an exposed surface of the substrate;
wherein the article comprises a medical device.
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Specification