Disclosed is a catheter application system comprising preferably a permanently applicable urinary catheter that is provided with a catheter tip, a hollow envelope in which the catheter is slidably disposed, and an insertion aid located at the distal end of the envelope. Said insertion aid is designed such that the catheter can be passed therethrough. The insertion aid encompasses insertion aid parts, i.e. an insertion sleeve with a closing element that can be opened for passing the catheter through, and a stop element which preferably extends outside the envelope and limits insertion of the insertion sleeve into an orifice. The insertion sleeve and/or the stop element are embodied as splittable insertion aid parts so as to be removable from the catheter once the catheter has been passed through.