The invention relates to a pressure measuring device (1) for measuring pressure in a biological system, comprising a flexibly or resiliently designed measuring cell holder (3), wherein, in the measuring cell holder (3), there are at least two FBG sensors (4) which are arranged at a distance from one another. The measuring cell holder (3) can comprise a plurality of layers (5, 6) into which the FBG sensors (4) can be integrated.
