Apparatus for the monitored metering of no into patient's...

A - Human Necessities – 61 – M

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A61M 16/00 (2006.01) A61M 16/10 (2006.01) A61M 16/12 (2006.01) G01N 33/00 (2006.01) G01N 33/497 (2006.01) G05D 11/13 (2006.01)

Patent

CA 2121384

Apparatus for the monitored metering of NO into patients' respiratory air. An apparatus for the monitored metering of NO into the respiratory air of patients with ARDS or similar disorders essentially comprises a respirator (1) in a respiratory circuit, an NO metering container (3), a metering unit (4), an analyzer (2) for determining the concentration of NO in the patient's respiratory air and a control unit (6a) which acts on the metering unit. In order for the apparatus to operate fault-free on continuous operation and quickly respond to changes in the NO concentration, a dehumidifier (23) and a measurement gas pump (20) are located in the connecting line between analyzer and respirator. An NO limit monitoring unit (18) which acts on the metering unit and is connected to the analyzer is preferably provided. It is furthermore advantageous for a monitoring and automatic control unit (6b) to be responsible for adjusting the NO to be metered by determining the volumetric flows of respiratory gas and NO on the basis of the analyzed value of NO. Figure 1.

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