Which type of instrument can be effectively decontaminated in a washer-sterilizer?

The correct answer pertains to the phaco instrument set, which is designed for procedures related to cataract surgery. This type of instrument is typically made from materials that can withstand the washing and sterilization processes in a washer-sterilizer. The construction and design of phaco instruments often allow them to be effectively cleaned and sterilized through automated systems, ensuring that all surfaces are adequately decontaminated.

Using a washer-sterilizer is pivotal in maintaining the integrity and usability of surgical instruments while ensuring patient safety. This equipment utilizes high-pressure washing and sterilization cycles, making it ideal for instruments that are not overly delicate or coated with materials that might not survive such treatments.

In contrast, the other options involve instruments that either have specific requirements or are made from materials that may not be suitable for the washer-sterilization process. For instance, a colonoscope, while it can be decontaminated, often requires manual cleaning that addresses its complex design and specific materials. A power drill includes electrical and mechanical components that should not be subjected to a washer-sterilizer as water exposure may damage the device. Lastly, laser-coated instruments may have surfaces that can be compromised in a washer-sterilizer, leading to difficulties in achieving