Abstract: A self-calibrating device for measuring intracorporeal pressure, includes: A pressure sensor having i) a test body (11) of which a segment of smaller thickness constitutes a membrane that can deform under the action of the pressure of the medium, the membrane being equipped with at least one piezoelectric transducer that can translate a mechanical stress into an electrical signal, and ii) a polarization contact, An actuator that is connected to a voltage source, having a non-deformable base, whereby at least one surface of the actuator is polarizable, the pressure sensor being placed above the actuator so that the membrane is in vertical alignment with the polarizable surface (22).

Abstract: The invention has as its object a self-calibrating device for measuring intracorporeal pressure, comprising: A pressure sensor that comprises i) a test body (11) of which a segment of smaller thickness constitutes a membrane that can deform under the action of the pressure of the medium, whereby said membrane is equipped with at least one piezoelectric transducer that can translate a mechanical stress into an electrical signal, and ii) a polarization contact, An actuator that is connected to a voltage source, comprising a non-deformable base, whereby at least one surface of said actuator is polarizable, and whereby said pressure sensor is placed above said actuator so that the membrane is directly at the base of the polarizable surface (22). Preferably, said pressure sensor comprises four doped-silicon piezoresistive gauges, integrated into the zones of greater deformation of a silicon membrane.