US 12,478,383 B2
Medical instrument having a ball bearing or sliding bearing as a generator
André Buerk, Villingen-Schwenningen (DE); and Frederick Lenzenhuber, Tuttlingen (DE)
Assigned to Aesculap AG, Tuttlingen (DE)
Appl. No. 18/016,382
Filed by Aesculap AG, Tuttlingen (DE)
PCT Filed Jul. 23, 2021, PCT No. PCT/EP2021/070714
§ 371(c)(1), (2) Date Jan. 16, 2023,
PCT Pub. No. WO2022/018273, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 10 2020 119 427.7 (DE), filed on Jul. 23, 2020.
Prior Publication US 2023/0270449 A1, Aug. 31, 2023
Int. Cl. A61B 17/16 (2006.01); A61B 90/98 (2016.01); F16C 19/54 (2006.01); H02K 35/02 (2006.01); A61B 17/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/1628 (2013.01) [A61B 17/1633 (2013.01); A61B 90/98 (2016.02); F16C 19/54 (2013.01); H02K 35/02 (2013.01); A61B 2017/00415 (2013.01); A61B 2017/1602 (2013.01); A61B 2090/066 (2016.02)] 18 Claims
OG exemplary drawing
 
1. A handheld medical instrument that is motor-operated or hand-operated, the handheld medical instrument comprising:
a plurality of bearings for supporting a shank or shaft for applying torque to a tool;
a distance sleeve having an inner surface and a defining a radial recess extending into the inner surface;
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 in the radial recess 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.