Device for affixing to cylindrical components of medical instruments

A device for affixing to cylindrical components of medical instruments with at least one intake part that can be appended to the cylindrical component and secured to the cylindrical component, wherein in the intake part a sleeve-shaped collet chuck that essentially coaxially surrounds the cylindrical component is positioned, whose inner diameter can be displaced between a span that can be pushed along the cylindrical component and a span that is essentially in form-locking contiguity with the cylindrical component, characterized in that the inner diameter of the collet chuck can be displaced by a slider that can slide essentially transverse to a longitudinal axis of the cylindrical component and is mounted in the housing of the intake part;

• wherein the collet chuck and the slider are in active connection with one another by means of a mortise-and-tenon control;
• and,
• wherein the mortise-and-tenon control consists of at least one control mortise that is positioned on the collet chuck and engages in a guide track configured in the slider.