FIG. 5B is a longitudinal cross section of the distal portion of another embodiment of the sheathed primary stenting system 100B which is a minor variation of the distal portion of the sheathed primary stenting system 100A of FIG. 5A. The only difference between the system 100B of FIG. 5B and the system 100A of FIG. 5A is the securing tube 115 of FIG. 5A which is not present in the system 100B of