An electrode implantation system including:A) At least one elongated implantation tool that comprises a proximal section that is, at least in sections, in the form of a mandrel, and a distal section that is in the form of a flexible guide wire, the proximal and the distal sections being delimited from one another by a static or adjustable stop element comprising a stop surface facing the distal section andB) An implantable electrode with an electrode sleeve that has a stop area that is complementary to the stop surface and that faces the proximal section.The electrode sleeve and the elongated implantation tool are arranged so that they are, at least in sections, coaxial with one another, and can be moved relative to one another along and around a common longitudinal axis. Other aspects relate to an elongated implantation tool and an implantable electrode.
