Air is filtered in via two battery powered HEPA filters situated at the head of the unit. This air is then expelled at the foot via a similar battery powered system. Within the envelope, negative air pressure is maintained relevant to the ambient pressure by manual operation of the flow control valve. This prevents leaks of contaminated air should a rupture occur in the envelope.

Several feature are included to adapt this unit for air transportation including: • Special feet with track stud and pin assemblies to locate the Isolator into tracking commonly used aircraft seating • Transport handles to allow for manoeuvring in confined spaces • A small battery powered fan for patient comfort during ground transportation or delays • Purpose built metal container to house operational spares

The bed consists of a removable stretcher, a patient harness and restraining straps (to secure the lower framework during transit), fire retardant mattress and separate lifting canvas. Half suits and gloved sleeves are incorporated into the envelope to allow for medical teams to provide full care while in transport. A supply port is situated at the foot of the envelope to allow for supplies to be introduced.