A kit (1； 1'； 1" ； 1A') includes:- an implantable medical device (4) having a tubular structure and a central axis (X1), the implantable medical device (4) including one or more axial portions (IF, OF) radially contractible towards the central axis (X1) to permit crimping of the implantable medical device (4), and- a holder member (2) supporting the implantable medical device (4) and extending axially of the tubular structure of the implantable medical device (4).A crimping apparatus for crimping the medical device of the kit (1) including a radially contractible crimping opening for receiving at least one axial portion of the medical device (4) supported by the holder member(2), and angular indicia to permit rotating the holder member supporting the medical device to a given angular position with respect to the crimping opening.
