The present invention relates to an apparatus (100) for folding or unfolding at least one medical implant (300) by using at least one tension thread (11, 11′), wherein the apparatus (100) includes a shaft (1) including a reception area for receiving the implant (300), a tensioning device (19) for altering a shape of the foldable and/or unfoldable implant (300) by means of the tension thread (11, 11′), and a separation device for separating the tension thread (11, 11′) from the implant (300) and/or for cutting through the tension thread (11, 11′). The invention further relates to a set and a method.
