Abstract: A handle device, in particular a surgical-tool handle device, with a first handle element and a second handle element, and with a shear joint by means of which the two handle elements are connected pivotably and separably, and with a coupling unit, which is configured to keep the two handle elements together counter to a separation direction and which comprises at least one coupling element that is configured to establish, depending on a relative position of the handle elements, a form-fit connection of the handle elements counter to the separation direction. The at least one coupling element is embodied as a centering element for centering the form-fit connection.

Abstract: A handle device, in particular a surgical-tool handle device, with a first handle element and a second handle element, and with a shear joint by means of which the two handle elements are connected pivotably and separably, and with a coupling unit, which is configured to keep the two handle elements together counter to a separation direction and which comprises at least one coupling element that is configured to establish, depending on a relative position of the handle elements, a form-fit connection of the handle elements counter to the separation direction. The at least one coupling element is embodied as a centering element for centering the form-fit connection.

Abstract: A tool, in particular for use as a surgical drill, has a main tool body which, in order to be connected to a tool attachment unit, has a fixing unit which is provided to be at least partly unusable after the main tool body has been detached from the tool attachment unit. The fixing unit has at least one form-fit element, which is provided to accept axial tensile forces in order to axially secure the main tool body to the tool attachment unit. The fixing unit has an assembly direction and a deflection element which points in the assembly direction, and which is provided for movably attaching the form-fit element to the main tool body. It is proposed that the form-fit element and the deflection element have different directions of extension.

Abstract: The invention relates to a system comprising a surgical instrument with a hollow main rod which has an opening, and comprising a flushing rod provided for flushing the hollow main rod and for being inserted into the hollow main rod through the opening. The invention further relates to a method for using such a system.

Abstract: The invention relates to a surgical instrument, in particular a minimally invasive surgical instrument, with a working unit, and with a control unit which has two control elements that can be separated from each other for cleaning and/or disinfection. It is proposed that the surgical instrument has a connecting device, which is provided for connecting the working unit and the control unit to each other in such a way that they can be separated for cleaning and/or disinfection.

Abstract: The invention relates to a surgical instrument, in particular a minimally invasive surgical instrument, with a working unit, and with a control unit which has two control elements that can be separated from each other for cleaning and/or disinfection. It is proposed that the surgical instrument has a connecting device, which is provided for connecting the working unit and the control unit to each other in such a way that they can be separated for cleaning and/or disinfection.

Abstract: A tool, in particular for use as a surgical drill, has a main tool body which, in order to be connected to a tool attachment unit, has a fixing unit which is provided to be at least partly unusable after the main tool body has been detached from the tool attachment unit. The fixing unit has at least one form-fit element, which is provided to accept axial tensile forces in order to axially secure the main tool body to the tool attachment unit. The fixing unit has an assembly direction and a deflection element which points in the assembly direction, and which is provided for movably attaching the form-fit element to the main tool body. It is proposed that the form-fit element and the deflection element have different directions of extension.