The present invention relates to a medical device (1) for generating electrical stimulation of a patient (P), comprising: a pulse generator (2) configured to generate current pulses for electrical stimulation of the patient (P), and at least one electrode lead (3) configured to be connected to the pulse generator (2) and comprising a plurality of electrode contacts (E1...E8) for delivering said current pulses to tissue (S) of the patient (P), wherein the pulse generator (2) is configured to repeatedly deliver a current pulse (CP) between two electrodes (E1, E3) forming a first group (G1) of electrode contacts of said plurality of electrode contacts, wherein the pulse generator (2) is further configured to deliver a charge balancing current pulse (AP) after each current pulse (CP) between said electrodes (E1, E3) of the first group (G1) such that the respective current pulse (CP) is separated from the succeeding charge balancing current pulse (AP) by an inter pulse interval (II), wherein the respective current pulse (CP) comprises an amplitude that has the same absolute magnitude (A) than the succeeding charge balancing current pulse (AP), but is of opposite sign, and wherein the pulse generator (2) is configured to deliver between each current pulse (CP) and the succeeding charge balancing current pulse (AP) a current pulse (CP) delivered between two further electrodes (E2, E4) forming a second group (G2) of electrode contacts of said plurality of electrode contacts. Furthermore, the invention relates to a corresponding method.
