Patent ID: 9451976
Filing Date: 2016-09-27
CPC Classification: A61B,H02K

Claim Text:
1. A medical handle comprising a grip section, a function section, a drive unit adapted to drive a medical tool and a control and/or regulating circuit adapted to control and/or regulate the drive unit, wherein the drive unit comprises a brushless electric motor with a stator, a rotor unit including a rotor and at least one magnetic element that rotates with the rotor and a sensor system for determining the alignment of the at least one magnetic element by determining an angle of rotation of the at least one magnetic element, the sensor system sensing the at least one magnetic element that rotates with the rotor and the rotational movement of the motor, wherein the sensor system for determining the alignment of the at least one magnetic element and the control and/or regulating circuit are combined in a one-piece joint control module, wherein the at least one magnetic element is arranged in the medical handle in such a way that at least a part of the control module can be positioned in the immediate vicinity of the at least one magnetic element and wherein the sensor system for determining the alignment of the at least one magnetic element is arranged in the control module in such a way that it can be positioned in the immediate vicinity of the at least one magnetic element, wherein the control module has an elongated shape that is accommodated partially in the grip section and the function section and comprises a first end turned toward the drive unit and a second end turned toward an energy source for supplying energy to the handle, wherein the first end is provided with contact elements which connect the control module to the drive unit for the supply of drive signals to the drive unit and the second end is provided with electrical contact elements for connecting the control module to the energy source, wherein the medical handle has a tool receptacle for the medical tool or a connecting device for a tool receptacle, and wherein the rotor unit comprises the rotor and one of the at least one magnetic element which is in the form of a sensor magnet, and wherein the sensor magnet and the control module are arranged between the rotor and the tool receptacle of the connecting device, and wherein the sensor system comprises at least two sensors positioned to surround the at least one magnetic element in an arch-shaped or circular configuration.