Medical instrument having a ball bearing or sliding bearing as a generator

A medical instrument that is motor-operated or hand-operated, the medical instrument comprising:

• a plurality of bearings for supporting a shank or shaft for applying torque to a tool;
• a distance sleeve;
• a component lying at least partly radially inside the distance sleeve;
• at least one permanent magnet attached to or configured in the component;
• and
• a coil disposed on or in the distance sleeve,
• at least two of the plurality of bearings forming a pair of bearings comprising a first bearing and a second bearing,
• the distance sleeve axially spacing the first bearing and the second bearing,
• the component being tubular and rotatably coupled or coupleable with at least one of the first bearing and the second bearing in such a way that the component co-rotates with a respective rotating part of said at least one of the first bearing and the second bearing or to form a rotating part of said at least one of the first bearing and the second bearing,
• the component comprising an outer jacket surface and a plurality of recesses on the outer jacket surface,
• the at least one permanent magnet comprising a plurality of permanent magnets that correspond in number to the plurality of recesses, and
• the plurality of permanent magnets being insertable into the plurality of recesses.

A medical instrument that is motor-operated or hand-operated, the medical instrument comprising:

• a plurality of bearings for supporting a shank or shaft for applying torque to a tool;
• a distance sleeve;
• a component lying at least partly radially inside the distance sleeve;
• at least one permanent magnet attached to or configured in the component;
• and
• a coil disposed on or in the distance sleeve,
• at least two of the plurality of bearings forming a pair of bearings comprising a first bearing and a second bearing,
• the distance sleeve axially spacing the first bearing and the second bearing,
• the component being tubular and rotatably coupled or coupleable with at least one of the first bearing and the second bearing in such a way that the component co-rotates with a respective rotating part of said at least one of the first bearing and the second bearing or to form a rotating part of said at least one of the first bearing and the second bearing, and
• at least the distance sleeve having radially inner signal lines electrically connected to the coil and radially outer signal lines coupled via electrical couplings to signal lines in the bearings so as to conduct electrical signals from the coil proximally along the medical instrument.