Method for Preparing Gas Mixtures for Lung Ventilators and Device for Carrying Out this Method
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United States of America Patent
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Issued Date -
Jun 5, 2008
app pub date -
Nov 30, 2005
filing date -
Dec 1, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a method for preparing gas mixtures for lung ventilators, a plurality of gases which are different from one another are supplied to a mixing chamber via switching valves, wherein the switching valves are opened and closed in a clocked manner and the pressure in the mixing chamber is monitored. The gases which are different from one another are each guided via a plurality of switching valves arranged in parallel, the switching valves being controlled in such a manner that a number of switching valves assigned to gases each different from one another, corresponding to a coarse mixing ratio is opened and closed synchronously.
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