Abstract: A medical motor handpiece for driving a distal end effector includes a handle portion and a preferably sleeve-shaped operating element that is held to rotate about a handle longitudinal axis at a distal end portion of the handle portion. The operating element can be coupled to the end effector so as to transform a rotational movement of the operating element in a first direction of rotation into a movement of the end effector. In the event of a rotational movement of the operating element in a second direction of rotation, opposite the first direction of rotation, a function on the end effector can be effected. The medical motor handpiece can be a component of a medical manual instrument that has an end effector coupled to the medical motor handpiece via a shaft in order to transfer torque from the motor handpiece to the end effector.

Abstract: A medical tool system includes a tool holder formed in a distal instrument portion adjoined by a proximal instrument portion. The proximal instrument portion is bendable relative to the distal instrument portion. A tool can be accommodated in the tool holder and pivoted relative to the tool holder. A first coupling device is arranged in the distal instrument portion. A second coupling device is arranged on the tool. In a coupling state, the second coupling device realizes a coupling between the tool and the distal shaft portion by operative engagement with the first coupling device to fix the tool in the distal shaft portion in the axial direction.

Abstract: A surgical tool is adapted to be inserted into an instrument shaft of a surgical instrument. The tool includes a distal tool tip, a tool shaft extending from the distal tool tip in a proximal direction and having a distal bearing portion as well as a drive portion arranged proximally to the distal bearing portion. The drive portion is formed for positive engagement with a drive shaft of the surgical instrument. A bearing bush is mounted on the distal bearing portion and has a bearing coupling element for releasable coupling with an instrument shaft of the surgical instrument.

Abstract: An electric motor includes a motor winding interconnection for operating an electrosurgical instrument with exactly one motor platform that is designed to operate the motor at a first operating voltage and a second operating voltage different from the first operating voltage. The motor platform includes a circuit, preferably a delta circuit or a star circuit, formed in each case by three phases with a respective phase coil. At least one phase coil is formed from N>1 interconnected individual coils. At the first operating voltage, the N individual coils of each phase coil are connected in parallel. At the second operating voltage, the N individual coils of each phase coil are connected in series. At least one short-circuiting mechanism per phase coil switches over between the first and second operating voltage.

Abstract: An electric motor includes a motor winding interconnection for operating an electrosurgical instrument with exactly one motor platform that is designed to operate the motor at a first operating voltage and a second operating voltage different from the first operating voltage. The motor platform includes a circuit, preferably a delta circuit or a star circuit, formed in each case by three phases with a respective phase coil. At least one phase coil is formed from N>1 interconnected individual coils. At the first operating voltage, the N individual coils of each phase coil are connected in parallel. At the second operating voltage, the N individual coils of each phase coil are connected in series. At least one short-circuiting mechanism per phase coil switches over between the first and second operating voltage.