Medical Equipment Glossary

Humidification and medication of air or anaesthetic gases may be achieved by using high-intensity ultrasound to break up water, or sterilizing agents, into tiny droplets. There are two main types, those in which the ultrasonic transducer is immersed in fluid from which the mist is projected, and those in which the liquid falls on to the transducer one drop at a time. Such devices are found in the wards and in the intensive care department. The unit may also incorporate a fan to assist the flow of gases which are being humidified.