TITLE

Developing an engineered antimicrobial/prophylactic system using electrically activated bactericidal metals

AUTHOR(S)
Fuller, Thomas A.; Wysk, Richard A.; Charumani, Charumani; Kennett, Mary; Sebastiennelli, Wayne J.; Abrahams, Rachel; Shirwaiker, Rohan A.; Voigt, Robert C.; Royer, Patricia
PUB. DATE
July 2010
SOURCE
Journal of Materials Science: Materials in Medicine;Jul2010, Vol. 21 Issue 7, p2103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The increased use of Residual Hardware Devices (RHDs) in medicine combined with antimicrobial resistant-bacteria make it critical to reduce the number of RHD associated osteomyelitic infections. This paper proposes a surface treatment based on ionic emission to create an antibiotic environment that can significantly reduce RHD associated infections. The Kirby-Bauer agar gel diffusion technique was adopted to examine the antimicrobial efficacy of eight metals and their ionic forms against seven microbes commonly associated with osteomyelitis. Silver ions (Ag+) showed the most significant bactericidal efficacy. A second set of experiments, designed to identify the best configuration and operational parameters for Ag+ based RHDs addressed current and ionic concentrations by identifying and optimizing parameters including amperage, cathode and anode length, separation between anode and cathode, and surface charge density. The system demonstrated an unparalleled efficacy. The concept was then implemented during in vitro testing of an antimicrobial hip implant, RHD.
ACCESSION #
51931001

 

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