| abstract |
The combination sensor with thermostatted heating device (7, 23) for simultaneous continuous transcutaneous measurement of oxygen (O₂) and carbon dioxide (CO₂) in the blood contains a measuring device (1) for the CO₂ partial pressure (pCO₂), which is purely optical-spectrometric or according The principle of pH measurement in an electrolyte (8) works, which is separated from the measuring point on the skin by a membrane (13) which is permeable to CO₂, but also light-permeable, and a further measuring device (24, 25, 26) for spectrometric measurement Measurement of blood oxygen saturation (sO₂). The advantage over known pO₂ / pCO₂ combination sensors is that the combination sensor according to the invention can be operated at a low operating temperature of, for example, 42 ° C. or less, so that continuous measurement over, for example, 24 hours is possible without moving or recalibrating the sensor, and thus it is easy to use in the home. |