Battery compartment for an external pacemaker

1. 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.

2. The pacemaker according to claim 1 , comprising a contact carrier, which is fastened in the pacemaker housing and mounted pivotally about a pivot axis and, which on a surface opposite of the first side of the battery compartment, has a first contact and a second contact on opposing sides of the pivot axis and is disposed such that the first batter pole and the second battery pole contacts one of the first contact and the second contact in the operating position of the battery compartment.

3. The pacemaker according to claim 1 , wherein the first slot has a first diameter (d 1 ) and a second diameter (d 2 ), wherein the second diameter (d 2 ) is smaller than the first diameter (d 1 ), wherein the first slot has the first diameter (d 1 ) at a first point and the second diameter (d 2 ) at a second point, and wherein the first point is disposed at a lesser distance from the removal side than the second point.

4. The pacemaker according to claim 3 , wherein the second diameter (d 2 ) is larger than a diameter of the first battery pole and smaller than a diameter of the second battery pole and wherein the first diameter (d 1 ) is larger than the diameter of the second battery pole.

5. The pacemaker according to claim 1 , further comprising a second slot open toward the removal side of the battery compartment on the first side of the battery compartment, wherein the first slot is positioned on the first side such that it enables contacting of the first battery pole from outside of the battery compartment, and wherein the second slot is positioned on the first side such that it enables contacting of the second battery pole from outside of the battery compartment.

6. The pacemaker according to claim 5 , wherein the first slot has a third diameter (d 3 ) and the second slot has a fourth diameter (d 4 ), wherein the fourth diameter (d 4 ) is smaller than the third diameter (d 3 ).

7. The pacemaker according to claim 6 , wherein the fourth diameter (d 4 ) is larger than a diameter of the first battery pole and smaller than a diameter of the second battery pole and wherein the third diameter (d 3 ) is larger than the diameter of the second battery pole.

8. The pacemaker according to claim 1 , wherein the battery compartment on the second side has a second tension spring and a handle which can be displaced along a second direction of displacement intersecting the first direction of displacement, wherein the second tension spring is designed to exercise a spring force on the handle along the second direction of displacement, wherein the recess of the pacemaker housing and the handle comprise at least one groove and a spring, wherein the groove has a closed part and a part which is open in the first direction of displacement, wherein the spring can be guided in the groove and is disposed such that the second tension spring exercises a second spring force on the handle when the spring is located in the open part of the groove, and exercises a third spring force on the handle when the spring is located in the closed part of the groove, wherein the second spring force is greater than the third spring force.

9. The pacemaker according to claim 8 , wherein a connecting line from the open part of the groove to the closed part of the groove has a direction component in the first direction of displacement such that the second tension spring through the action of force thereof is designed to move the battery compartment into the operating position.

10. A pacemaker according to claim 1 , wherein the second side of the battery compartment has a sealing ring surrounding the second side, the ring being designed to seal the recess of the pacemaker housing when the battery compartment is in the operating position.

11. The pacemaker according to claim 1 , wherein the replacement battery includes a 9V battery.