The present invention relates to an apparatus (100) for folding or unfolding at least one medical implant (300) by means of at least one tension thread (11, 11), wherein the apparatus (100) comprises a shaft (1) and a tensioning device for altering a form or shape of the foldable and/or unfoldable implant (300) by means of the tension thread (11, 11). In at least one shaft section thereof, the shaft (1) comprises a plurality of individual shaft fibers (13). The present invention further relates to a set and a method.
