Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using direct contact with electrical or electromagnetic...
Patent
1996-03-13
1997-08-19
Nessler, Cynthia L.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using direct contact with electrical or electromagnetic...
422 27, 422 29, 205300, A61L 208
Patent
active
056585292
ABSTRACT:
A process for color anodizing and sterilizing aluminum surfaces on medical instruments without fading the anodized color comprises the steps of: anodizing an aluminum surface on a medical instrument to form an oxide film; immersing the surface in a salt bath of a coloring metal and electrolytically depositing the coloring metal onto the oxide film; and repeatedly sterilizing the medical instrument and its surface by exposing it to an oxidizing sterilant, whereby the electrolytically deposited coloring metal remains adhered to the surface and the color of the surface is not adversely affected by the repeated exposure to the oxidizing sterilant. Preferably, the sterilant comprises hydrogen peroxide, the coloring metal comprises tin and the surface remains non-cytotoxic after the anodizing, coloring steps and sterilizing steps.
REFERENCES:
patent: 3849263 (1974-11-01), Gedde
patent: 3850054 (1974-11-01), Weissman
patent: 4414077 (1983-11-01), Yoshida et al.
patent: 4643876 (1987-02-01), Jacobs et al.
patent: 5087418 (1992-02-01), Jacob
Feldman Leslie A.
Hui Henry
Farmer Andrew C.
Johnson & Johnson Medical Inc.
Nessler Cynthia L.
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