METHOD AND DEVICE FOR RECOVERING AND ANALYZING RESPIRATORY CONDENSATES

摘要

The invention relates to a method for analyzing components of exhaled air with the aid of electrochemical sensors and/or biosensors. Said components are determined by measuring and evaluating signals generated by one or several of the sensors during contact with said substances or reaction products obtained from said substances. The substances that are to be analyzed are also condensed when the water contained in breathing gas is condensed on a condensation surface. The obtained respiratory condensate is fed directly to the sensors while the condensation surface is functionalized or activated such that an interaction or a chemical reaction takes place with the condensate and/or the substances that are to be analyzed during the condensation process, whereby the signal generated on the sensors is influenced. The invention further relates to a device for recovering respiratory condensates. Said device comprises at least one sensor unit which is placed on a basic element (a fixture or a support) and is provided with an appropriately functionalized or activated condensation surface in addition to the sensors. The inventive device also comprises at least one Peltier element and a heat-conducting bridge. In a preferred embodiment, the basic element can be connected to a head fixture and can thus be positioned directly in the respiratory flow directly in front of the mouth of the person wearing the device and be connected to a portable power supply system and an electronic evaluation system as required.