A guidewire torquer comprising a handling body for handling of the guidewire torquer and guidewire holding surfaces oriented for engaging the guidewire from mutually opposite sides of the guidewire and holding the guidewire in an elastically tensioned, bent guidewire shape providing frictional fixation of the guidewire relative to the handling body. The guidewire holding surfaces project from an abutment plane defined by at least one abutment surface. A guidewire trajectory of the bent guidewire shape extends along and touches the guidewire holding surfaces is accessible from a direction in which the at least one abutment surface is facing. At least portions of the guidewire holding surfaces lean over towards or face the abutment plane for holding the guidewire adjacent to said abutment plane, and the guidewire holding surfaces are part of a single, rigid body portion.
