[Realization of a prototype of radiosonde for the cerebrospinal fluid pressure measurement (author's transl)].

The paper deals with a new radiosonde for the measurement of the epidural pressure of cereborspinal fluid. The device utilizes an active circuit and the requests of autonomy have been achieved making it to work on-demand. A "Pitran" piezotransistor has been used as the sensor of the pressure. Results in conformity with the requests have been obtained from in vitro tests.