INTRODUCTION
8
FUNCTION
When we breathe, approximately one-third of the time is spent inhaling, and two-thirds exhaling.
As a result, oxygen delivered by continuous flow is wasted during exhalation. By eliminating
oxygen flow during exhalation, a two-thirds savings is possible. Additionally, the application
of the EVOLUTION
TM
is based on the fact that only oxygen inhaled at the beginning of the
breath actually reaches the alveoli and is absorbed by the body. The oxygen inhaled during the
remainder of the breath is not used and is exhaled again. For this reason, the EVOLUTION
TM
only administers oxygen at the beginning of inhalation. This makes the oxygen source last
longer. The EVOLUTION
TM
is designed to be an integral component of a lightweight, long-lasting
ambulatory system.
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