Steris Inc.

Raymond C. Kralovic

Duncan C. Badertscher

Duncan C Badertscher

Raymond C Kralovic

Medical instruments, which may include brass, copper, aluminum, stainless steel, carbon steel, or plastic parts are microbially decontaminated (sterilized or disinfected) in an antimicrobial solution. To provide a long shelf life, premeasured doses of powdered reagents are sealed in an ampule until ready for use. The powdered reagents are selected such that they react in the presence of water to form a strong oxidant solution in an appropriate concentration to be effective as an antimicrobial. The preferred powdered reagents include acetylsalicylic acid and sodium perborate which react in the presence of water to form a peracetic acid solution. Moreover, these dry reagents form sodium metaborate and salicylic acid, both corrosion inhibitors to inhibit corrosion of metal parts of the medical instruments. The ampule may also hold a preselected dose of phosphate or other water soluble corrosion inhibitors and a wetting agent.

Powdered anti-microbial composition

Medical instruments, which may include brass, copper, aluminum, stainless steel, carbon steel, or plastic parts are sterilized or disinfected in an anti-microbial solution. The anti-microbial effect of a strong oxidizing agent, such as peracetic acid, is improved with a wetting agent. The solution further includes a triazole or other component for inhibiting the corrosion of copper and brass. Phosphates or other buffering agents adjust the oxidizing agent generally to a neutral pH for preventing the corrosion of steel. Molybdates or analogous compounds also buffer the pH and inhibit corrosion of aluminum by the oxidizing agent. The corrosion inhibiting is enhanced by the wetting agent. Optionally, a sequestering agent is provided for inhibiting hard water precipitation.

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Cleveland, OH, United States of America

Duncan C Badertscher