An implantable magnet that can freely turn in response to an external
magnetic field, thus avoiding torque and demagnetization on the
implantable magnet. The implantable magnet can be combined with an
electric switching function depending on the orientation of an external
magnetic field, thus protecting an implanted coil and/or implant
electronics against induction of over-voltage or performing an electric
switching function for other various purposes. The magnetic switch may
further include, for example, a first switching contact and a second
switching contact. A magnetically soft body that includes an electrically
conductive surface is shiftable between a first position where the body is
in simultaneous contact with the first and second switching contacts, and
a second position where the body is out of contact with at least one of
the first and second switching contacts. The body and the implantable
magnet are positioned such that the body is shifted to one of the first
position and the second position as a function of the external magnetic
field resulting in a magnetic force between the magnet and the
magnetically soft body.
