An electrode device and a powering device for implantation in a subject, and an implantable system

An electrode device for implantation in a subject, said electrode device comprising:

• a control unit, wherein the control unit is arranged in a biocompatible package configured to protect the control unit from an implant environment;
• an electrode arrangement comprising a plurality of electrodes, wherein the plurality of electrodes is configured to be arranged in relation to a body part of the subject for providing electrical signals to and/or acquiring electrical signals from the body part;
• a plurality of electrode leads, wherein each electrode lead of the plurality of electrode leads is configured to connect the control unit with a respective electrode of the plurality of electrodes, wherein each electrode lead is fixedly connected to the control unit;
• and
• an interface wire, wherein the interface wire is configured to connect the control unit to a powering device, wherein the interface wire is configured to provide power from the powering device to the control unit and to provide communication between the control unit and the powering device.