CPC A61M 16/085 (2014.02) [A61B 5/0836 (2013.01); A61M 16/0066 (2013.01); A61M 16/0808 (2013.01); A61M 16/0833 (2014.02); A61M 16/208 (2013.01); A61M 16/22 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/103 (2013.01); A61M 2016/1025 (2013.01); A61M 2016/1035 (2013.01); A61M 2202/0208 (2013.01); A61M 2202/0225 (2013.01); A61M 2202/0241 (2013.01); A61M 2202/0283 (2013.01); A61M 2205/15 (2013.01); A61M 2205/52 (2013.01)] | 20 Claims |
1. A process for the detection of a leak in a patient gas module, which suctions and analyzes a continuous sample gas stream from a ventilated patient, the process comprising the steps of:
determining a first time curve of a carbon dioxide concentration in a breathing gas mixture of the patient;
determining a second time curve of a concentration of an other gas in the breathing gas mixture, which other gas is different from carbon dioxide;
determining a statistical similarity indicator between the first time curve and the second time curve; and
detecting the leak based on a change of the similarity indicator, wherein the similarity indicator measures a phase shift between the first curve and the second curve.
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