Pneumatic single-lumen medical gas conserver
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United States of America Patent
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Nov 13, 2012
Grant Date -
Jul 24, 2008
app pub date -
Aug 24, 2007
filing date -
Aug 24, 2006
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Abstract
A pneumatic single-lumen medical gas conserver combines the advantages of typical single-lumen and dual-lumen conservers. In particular, a pneumatic single-lumen conserver can provide a rapid response to patient inhalations without the need for a more expensive dual-lumen cannula hose. In addition, after delivering oxygen the conserver has a specific pneumatically-implemented delay period before being able to detect the next inhalation to inhibit “double pulse” deliveries. In addition to a conserving or pulse flow mode, the conserver can provide a user-selectable gas flow at a continuous or constant flow mode.
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