Electro-acoustic implant

An electro-acoustic implant, comprising

• an elongate electrode carrier having a plurality of stimulation electrodes that can be capable of being introduced into a cochlea of a human subject;
• and
• a flat sound transducer that is excitable to vibrate at least regionally by applying a voltage,
• wherein the sound transducer is fixable in the middle ear such that its vibration is transferable to a fluid in the cochlea,
• wherein the flat transducer has a membrane structure as a part of its plane, and wherein the membrane structure has at least one carrier layer and at least one piezo layer that is arranged on the carrier layer and that comprises a piezoelectric material such that the sound transducer is excitable to vibrate at least regionally by applying the voltage to the piezo layer, wherein the membrane structure in the plane is divided by at least one cutting line separating all the layers of the membrane structure into at least one, two, or more segments such that the membrane structure is mechanically decoupled at the cutting line,
• wherein the sound transducer is configured such that it is arrangeable in, on, and/or in front of a round window or an oval window or a surgically created third window of an ear and/or in a round window niche of an ear, covering the corresponding window at least partially or completely, such that vibrations of the sound transducer effect sound vibrations through the corresponding window;
• and
• wherein the elongate electrode carrier extends through the plane of the flat sound transducer that extends, when the sound transducer is arranged in front of the corresponding window, at least partially over the corresponding window.