Battery for powering a medical device having low magnetic susceptibility

A battery which comprises:

• a) a casing comprising a first end and a second end;
• b) an anode housed inside the casing;
• c) a cathode housed inside the casing in operative association with the anode;
• d) a first terminal connected to one of the anode and the cathode;
• e) a second terminal connected to the other of the anode and the cathode, wherein the casing has a side wall between the opposed first end and the second end and wherein the second end and at least part of the casing side wall are provided with an insulative material to prevent electrical contact therewith;
• f) wherein the first end of the battery casing comprises the first terminal as a continuous member surrounding the second terminal and having a first contact surface disposed in a first plane spaced from the second end of the casing, wherein the second terminal comprises a second contact surface disposed in a second plane spaced from the second end of the casing, a first distance from the first plane to the second end the casing being greater than a second distance from the second plane to the second end of the casing;
• and
• g) a fuse proximal to the casing and in operative association with the second terminal, the fuse for preventing uncontrollable chemical reactions.

A battery which comprises:

• a) a casing comprising a first end and a second end;
• b) an anode housed inside the casing;
• c) a cathode housed inside the casing in operative association with the anode;
• d) a first terminal connected to one of the anode and the cathode;
• e) a second terminal connected to the other of the anode and the cathode, wherein the casing has a side wall between the opposed first end and the second end and wherein the second end and at least part of the casing side wall are provided with an insulative material to prevent electrical contact therewith;
• f) wherein the first end of the battery casing comprises the first terminal as a continuous member surrounding the second terminal and having a first contact surface disposed in a first plane spaced from the second end of the casing, wherein the second terminal comprises a second contact surface disposed in a second plane spaced from the second end of the casing, a first distance from the first plane to the second end the casing being greater than a second distance from the second plane to the second end of the casing;
• g) wherein the first contact surface is a planar ring supported on the first end of the casing, and the first end defines a recess in which the second terminal is located;
• and
• h) a fuse supported on the casing and in the recess and in operative association with the second terminal, the fuse for preventing uncontrollable chemical reactions.