Accordingly, certain methods comprise sterilizing, either terminally or sub-terminally, any one or combination of the following apparatus: the resistive element systems 10, 20 (with or without a working end of the types depicted in FIGS. 4, 5-7A, 7C-7E, and 8-13B) and/or the catheters 11, 21 or sheath 22 thereof; the HAS treatment system 200 and/or the catheters 202, 202??? or introducer sheath 20