The Principles of Medical Device Decontamination

use of medical devices such as non-invasive, semi-invasive and intra-operative ultrasound probes. The design of these devices does not usually allow them to be decontaminated using traditional methods such as automated washer-disinfectors using thermal disinfection and porous load steam sterilization.

The majority of these devices are temperature sensitive due to the materials and electrical components used in their design. Alternative decontamination methods have therefore been developed to provide a safe and effective means of decontamination.

External Abdominal Ultrasound Probe

Transvaginal Probe

Currently there are a number of decontamination approaches available. • Ultra-violet light (UV-C) decontamination systems • Hydrogen Peroxide decontamination systems • Manual multi-wipe system (the least preferred method) • Use of an Endoscope Washer-Disinfector within the Endoscope Decontamination Unit (EDU) Automated decontamination methods are the preferred option over manual methods (such as multi-wipe systems) as they can be validated to ensure process cycles routinely produce defined acceptance criteria, allowing parametric release of the loads. Manual methods are less reliable due to ‘human factors’ and the possibility of reproducibility variations. Traceability, staff training, cost and device compatibility are important considerations when defining the appropriate process.

Non – Invasive and Semi – Invasive Probes

Non-invasive probes are typically used externally on patients intact skin and can be

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