Patent ID: 8437847

Claim:
A pacemaker having a pacemaker housing, which comprises a recess in which a battery compartment displaceable between a removal position and an operating position along a first direction of displacement is disposed for receiving a replaceable battery having a first and a second battery pole disposed on a battery face through a removal side of the battery compartment, wherein the pacemaker comprises means for locking the battery compartment in the operating position, wherein on a first side oriented in the first direction of displacement, the battery compartment has at least one first slot, which is open toward the removal side of the battery compartment and positioned on the first side such that it allows contacting of the battery from outside of the battery compartment, wherein the battery compartment includes an electrically isolating partial cover, which is disposed on a second side opposite the first side and designed to cover a base of the battery directed toward the second side in the direction of the removal side of the battery compartment, and wherein the battery compartment has a first tension spring disposed on the second side, the first tension spring being designed to exercise a first spring force on the battery along the first direction of displacement.