Method for Preparing Gas Mixtures for Lung Ventilators and Device for Carrying Out this Method
First Claim
1. A method for preparing gas mixtures for lung ventilators in which 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, characterised in that the gases which are different from one another are each guided via a plurality of switching valves arranged in parallel and the switching valves are 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 are opened and closed synchronously.
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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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Citations
9 Claims
- 1. A method for preparing gas mixtures for lung ventilators in which 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, characterised in that the gases which are different from one another are each guided via a plurality of switching valves arranged in parallel and the switching valves are 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 are opened and closed synchronously.
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