Deposition of a silver layer on a nonconducting substrate
AssigneeC.R. Bard, Inc.
InventorsRichard N. Terry, Fung Bor Chen, Zhihui Yin
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Abstract
Methods for the deposition of silver-comprising films on nonconducting substrates, and, more particularly, to deposition of such films that are very thin, are provided. The surface of nonconducting substrates is modified with a superabsorbent polymer to increase silver deposition when compared to a non-modified surface. Also provided are films produced using a swelling agent, whereby porosity of the surface of the nonconducting substrate is increased, thereby permitting increased silver deposition when compared to an unmodified surface.
Claims12
A method for preparing an antimicrobial medical device, comprising:
- providing a nonconducting material;
- treating a surface of the nonconducting material by at least one of depositing a superabsorbent polymer on the surface or by exposing the surface to a swelling agent;
- depositing silver metal by exposing the treated surface to an aqueous solution of a silver salt in a presence of a deposition control agent;
- and
- treating the silver metal with a stabilizing amount of one or more metals selected from the group comprising platinum group metals and gold, whereby an adhesive, thin, uniform, transparent, antimicrobial, biocompatible coating comprising silver metal is obtained.
Dependencies are inferred from the claim text.