Protective device for protecting a port needle or Huber needle against shifting and for protecting at least one port needle puncture site and/or incision site. A frame-like spacer element is provided with an inner opening, recess or cutout for surrounding or receiving the port needle or Huber needle, which frame-like spacer element has a height corresponding to at least half the height of the port needle or Huber needle and has at least one means for fixing or securing the spacer element in the area of a port.