Electrode device

The invention relates to an electrode device for intracorporal stimulation of body tissue, in particular for intracardiac stimulation of cardiac tissue, having an electrode cable which comprises at least one elongated insulated conductor and an electrode head which is mounted on the distal end of the electrode cable. The surface of the electrode head consists in part of insulating material and in part of an electrically conductive material which is connected to the conductor and forms at least one stimulation surface. In order to obtain an electrode device with an abovementioned electrode head which is of simple construction and therefore relatively inexpensive and in the case of which it is guaranteed that its stimulation surfaces make very good contact with the cardiac tissue to be stimulated in the case of an implanted electrode device, and in the case of which the insulating material is extremely biocompatible, it is proposed according to the invention that at least the entire surface layer of the electrode head (2) consists of a conductive material, and that this surface layer defines the desired shape of the electrode head, and in that the conductive material is partly covered by a layer which is made from a highly resistant insulating material (6) and is so thin that the difference between the distance from the stimulation surface to the cardiac tissue and from the insulating layer (6) to the cardiac tissue does not influence the threshold value with the electrode device applied.