What device is specifically used for steam or gas sterilization?

The autoclave is specifically designed for steam or gas sterilization. It operates by using high-pressure steam to create a moist heat environment that effectively kills a wide range of microorganisms, including bacteria, viruses, fungi, and spores. The combination of elevated temperature and pressure penetrates wrapped instruments and materials, ensuring thorough sterilization.

While other devices listed have sterilization or cleaning purposes, they do not serve the same function as an autoclave. An ultrasonic cleaner uses high-frequency sound waves in a liquid solution to remove debris and contaminants from instruments, but it does not sterilize them. An incubator provides a controlled environment for cell culture and does not sterilize any equipment. A dry heat sterilizer employs dry heat to kill microorganisms but does not utilize steam or gas, limiting its utility compared to the autoclave for sterilizing items that are sensitive to moisture.

Hence, the autoclave is the primary device recommended for effective steam or gas sterilization in surgical settings, making it the correct choice.