Triclosan-containing medical devices
AssigneeThe Trustees of Columbia University of the City of New York
InventorsShanta Modak, Lester Sampath
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Abstract
The present invention relates to polymeric medical articles contained the antiinfective agents chlorhexidine and triclosan. It is based, at least in part, on the discovery that the synergistic relationship between these compounds permits the use of relatively low levels of both agents, and on the discovery that effective antimicrobial activity may be achieved when these compounds are contained in either hydrophilic or hydrophobic polymers.
Claims30
A hydrophilic polymeric medical article which has been impregnated, coated, or impregnated and coated with a treatment solution comprising (i) between about 1 and 10 percent of a hydrophilic polymer;
- (ii) between 1 and 5 percent of an antiinfective agent selected from the group consisting of chlorhexidine free base, a chlorhexidine salt, and a chlorhexidine derivative;
- and (iii) between 0.5 and 5 percent of triclosan.
A hydrophilic polymeric medical article which has been impregnated, coated, or impregnated and coated with a treatment solution comprising (i) between about 1 and 10 percent of a hydrophobic polymer (ii) between 1 and 5 percent of an antiinfective agent selected from the group consisting of chlorhexidine free base, a chlorhexidine salt, and a chlorhexidine derivative;
- and (iii) between 0.5 and 5 percent of triclosan.
A hydrophobic polymeric medical article which has been impregnated, coated, or impregnated and coated with a treatment solution comprising (i) between about 1 and 10 percent of a hydrophobic polymer (ii) between 1 and 5 percent of an antiinfective agent selected from the group consisting of chlorhexidine free base, a chlorhexidine salt, and a chlorhexidine derivative;
- and (iii) between 0.5 and 5 percent of triclosan.
A method for rendering a silicone catheter antiinfective, comprising:
- (1) placing the silicone catheter in an impregnating solution comprising (a) a solvent which causes the catheter to swell;
- (b) between 1 and 5 percent of an antiinfective agent selected from the group consisting of chlorhexidine free base, a chlorhexidine salt, and a chlorhexidine derivative;
- (c) between 0.5 and 5 percent of triclosan;
- and (d) between 1 and 10 percent of a biomedical polymer;
- (2) soaking the catheter in the impregnating solution for a period of time sufficient to allow the catheter to swell;
- (3) removing the catheter from the impregnating solution;
- and
- (4) drying the catheter.
A hydrophobic polymeric medical article which has been impregnated, coated, or impregnated and coated with a treatment solution comprising (i) between about 1 and 10 percent of a hydrophilic polymer;
- (ii) between 1 and 5 percent of an antiinfective agent selected from the group consisting of chlorhexidine free base, a chlorhexidine salt, and a chlorhexidine derivative;
- and (iii) between 0.5 and 5 percent of triclosan.
Dependencies are inferred from the claim text.