申请人:——
公开号:US20040116551A1
公开(公告)日:2004-06-17
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. Coatings may be on all or part of a surface.
本发明涉及抗菌组合物、这些组合物的生产方法以及这些组合物与医疗器械(如导管和植入物)的使用。由于活性离子的水溶性不同,本发明的组合物具有为组合物中的活性离子提供不同释放动力学的优点,从而可以为特定应用定制抗菌剂释放曲线,并提供长期持续的抗菌活性。更具体地说,本发明涉及含有由一种或多种低聚金属(如银)盐组成的胶体的聚合物组合物。本发明的工艺包括将一种或多种低聚金属盐的溶液与聚合物溶液或分散液混合,并通过向溶液中添加其他盐类沉淀盐类胶体,这些盐类胶体会与部分或全部第一种金属盐发生反应。这些组合物可以加入物品中,也可以用作医疗器械等物品的涂层。涂层可以是全部或部分表面。