Antimicrobial coatings for medical devices and processes for preparing such coatings
AssigneeCovidien LP
InventorsValentino J. Tramontano, Brent Marsden, Robert F. Almeida, Eric W. Dahl, James W. Rawlins, Sharathkumar K. Mendon
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Abstract
Antimicrobial formulations and coatings for medical devices and processes therefor are disclosed. The formulations include at least one water permeable polymer with at least one antimicrobial agent in a liquid medium and are prepared by wet milling the components and can form antimicrobial coatings having uniformly dispersed particles having an average size of no greater than 50 microns.
Claims15
A process of forming an antimicrobial formulation for coating a medical device, the process comprising milling at least one water permeable polymer which is dissolved in a liquid medium with at least one antimicrobial agent which is insoluble in the liquid medium to form the antimicrobial formulation in which the at least one water permeable polymer encapsulates the at least one antimicrobial agent;
- and adding a primary C1-6 alcohol to the antimicrobial formulation;
- wherein the at least one antimicrobial agent includes a silver-based antimicrobial agent and wherein the at least one water permeable polymer includes at least one of a polyurethane or a thermoplastic polyurethane elastomer.
Dependencies are inferred from the claim text.