Abstract: A catheter system comprising at least one catheter shaft 3, an anisotropic implant, in particular an implantable heart valve prosthesis 6, a control device for controlling and manipulating the catheter, and at least three electrodes 4, 5 and 11 in the distal region of the catheter, which are each conductively connected to an analysis unit by their own electrode lead. The catheter system can change between an insertion state and an orientation state, wherein this change is triggered by a manipulation of the control device. In the orientation state the three electrodes of the catheter system span a spatial angle that is different from that spanned in the insertion state.