Measurement sensor for the transcutaneous determination of the partial pressure of a gas

摘要

A measurement sensor for the transcutaneous determination of the partial pressure of a gas comprises a measurement electrode and a counter-electrode which are brought into mutual contact via an electrolyte space and combined to form a measurement cell whose measuring surface, which is exposed to the gas to be determined, can be heated up to a working temperature by a heating device. This measurement sensor is to be improved in such a way that the validity of the transcutaneously determined blood gas values is maintained and the residence time of the measurement sensor at the site to be measured can be essentially prolonged while effectively reducing the temperature of the measurement surface. To this end, in addition to the measurement surface heating device (4) there is at least one other auxiliary heating device (18) which is located adjacent thereto and at a spatial distance therefrom and is thermally insulated relative thereto. <IMAGE>