title: A system of differential delivery pressures and hose diameters for use in hospital medical gas installations.
abstract: Medical gases can be identified simply if they are supplied at different pipeline pressures. Routine maintenance errors, accidental pipeline cross-connections, or gas failures, can be automatically detected by incorporating a pneumatic unit with pressure-sensitive valves into the anaesthetic machine. A fail-safe method of ensuring the delivery of the correct gases to the patient is described.
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation; D004869:Equipment Safety; D004865:Equipment and Supplies, Hospital; D005740:Gases; D008284:Maintenance and Engineering, Hospital; D011312:Pressure
chemical_list: D005740:Gases