Set comprising a medical pressure sensor device for measuring a cerebral pressure - having a pressure sensor unit , - having a base housing containing electronic components for controlling and reading out the pressure sensor unit , wherein the base housing comprises a housing upper part and a housing lower part connected thereto, - having exactly one catheter which can be connected to the base housing via a connecting piece , - wherein the catheter has at least one catheter passage opening which is in fluid connection with the pressure sensor unit , - wherein the pressure sensor unit is arranged in the base housing , - wherein the at least one catheter passage opening defines a pressure measurement location remote from the pressure sensor unit , characterized in that - the set further comprises at least one exchange catheter which can be connected to the base housing via the connecting piece in exchange with the catheter , wherein the catheter and the at least one exchange catheter comprise differently arranged passage openings and/or differently sized passage openings , - a main body of the catheter is designed as a catheter tube made of plastic, - the pressure sensor unit is arranged on a printed circuit board in the base housing centrally to a connecting piece longitudinal axis of the connecting piece , - the pressure sensor unit is sealed against the housing lower part by means of an annular seal running around the connecting piece longitudinal axis , - the electronic components for controlling and reading out the pressure sensor unit are arranged around the pressure sensor unit on the printed circuit board in an interior space of the base housing , - the interior space is sealed from a fluid connection created by the connecting piece . - having a pressure sensor unit , - having a base housing containing electronic components for controlling and reading out the pressure sensor unit , wherein the base housing comprises a housing upper part and a housing lower part connected thereto, - having exactly one catheter which can be connected to the base housing via a connecting piece , - wherein the catheter has at least one catheter passage opening which is in fluid connection with the pressure sensor unit , - wherein the pressure sensor unit is arranged in the base housing , - wherein the at least one catheter passage opening defines a pressure measurement location remote from the pressure sensor unit , - the set further comprises at least one exchange catheter which can be connected to the base housing via the connecting piece in exchange with the catheter , wherein the catheter and the at least one exchange catheter comprise differently arranged passage openings and/or differently sized passage openings , - a main body of the catheter is designed as a catheter tube made of plastic, - the pressure sensor unit is arranged on a printed circuit board in the base housing centrally to a connecting piece longitudinal axis of the connecting piece , - the pressure sensor unit is sealed against the housing lower part by means of an annular seal running around the connecting piece longitudinal axis , - the electronic components for controlling and reading out the pressure sensor unit are arranged around the pressure sensor unit on the printed circuit board in an interior space of the base housing , - the interior space is sealed from a fluid connection created by the connecting piece . <EOS>