for Cleaning Surgical Instruments
Medical instruments being cleaned must be fully immersed. Hinged instruments must remain open during the cleaning treatments. Use cleaning trays that do not obstruct the ultrasonic cleaning process. Sort and separate instruments by similar metals to prevent corrosion. Review the level of soil and renew the ultrasonic bath as needed. Follow each ultrasonic cleaning with instrument rinses. Ultrasonic cleaning will fragment and loosen soil but will not necessarily remove the soil from the surface of the surgical instruments being cleaned.
Recommendations for detergents used for medical ultrasonic cleaning: a non-foaming detergent must used, the labeling of the detergent should recommend the use of the product for ultrasonic cleaning surgical instruments, always use enzymatic enzyme detergents carrying the 4 enzymes needed for surgical instruments soiled with proteinaceous bioburden (protein, fats, starch, carbohydrates), use detergents with 'surfactant' cleaning agents for removing stains and hard water mineral deposits, use the treatment cleaning time recommended by the medical device and detergent manufacturers, always cover the ultrasonic cleaner when is use to avoid inhaling the aerosols of cleaning concentrates containing enzyme detergents due to the risk of anaphylactic reactions.
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Medical Ultrasonic Cleaner Time and Temperatures
Enzyme cleaning concentrates function more effectively at temperatures above room temperature. The optimal range begins as > 22 C - 72 F with performance reaching it's peak at 58.3 C - 137 F. This is often referred to as the optimal temperature for the performance or activity of enzymatic action. The activity of enzymes does not stop at higher temperatures but the level of performance does begin to decrease. Enzyme cleaning concentrates enzyme-detergents and all-in-one cleaning concentrates, which include enzymes, should be used in accordance with the manufacturer's recommendations and the recommendations of the medical devices being cleaned. It is recommended that all visible debris and blood be removed from the instrument prior to ultrasonic cleaning. Because Ultrasonic Cleaners do not provide the complete "proper sequence of treatments" final rinses that are purified, purged between treatments, and/or have temperatures elevated to disinfection levels, they are not considered to be as clinically effective as automated washer disinfectors. Ultrasonic Cleaning can effectively remove: long term encrustation and surgical cements or glues that have dried onto instrumentation.
The proper sequence of surgical instrument washer disinfector treatments has been proven to deliver the efficacy of disinfection of 100%, removed all pathogens, and all the instruments tested were sterile at the completion of washing process.