Home medical oxygen concentrators were invented in the early 1970s, with the manufacturing output of these devices increasing in the late 1970s. Union Carbide Corporation and Bendix Corporation were both early manufacturers. Prior to that era, Continue reading →

In either the portable or central systems, the O2 cylinder will become depleted before the cylinder of N2O. Approximately 2.5 O2 cylinders will be used for each N2O cylinder of comparable size. It is obvious that a potentially Continue reading →

A wheelchair is a chair with wheels, used when walking is difficult or impossible due to illness, injury, old age related problems, or disability. These can include spinal cord injuries (paraplegia, hemiplegia, and quadriplegia), broken leg(s), cerebral palsy, brain injury, Continue reading →