Fluid device

A fluid device comprising a fluid chamber which is designed for receiving a fluid and which is commonly delimited by a device housing and a bending-elastic membrane element which has a planar extension in a main extension plane, wherein the membrane element at its peripheral edge section is fixed to the device housing in a fluid-tight manner and wherein a membrane working section of the membrane element, which is framed by the peripheral edge section, for the change of the volume of the fluid chamber can be elastically deflected in a working direction which is orientated transversely to the main extension plane whilst carrying out a stroke movement, by a piezoactuator of the fluid device which acts upon the membrane element, wherein the membrane element consists of a rubber-elastic material, wherein the piezoactuator comprises a drive section which extends along the membrane working section, is embedded into the membrane element and is enveloped by the rubber-elastic material of the membrane element.