#$%^&*AU2011250739B220130328.pdf#####ABSTRACT A modular catheter assembly includes a holder having a proximal end and a distal end. An electrode sheath carrier is mounted on the distal end of the holder. A shape imparting element carrier is removably mountable to an end of the holder and is accessible externally of the holder with at least the shape imparting element carrier being replaceably mounted to the holder.108 96 16 106 102 100 98 102 94 12 104 115 115 10 2 140 126 122 132 112 140 82 1084 FIG FIG 1120 FIG. 19. 1 116 138 130 124 128 136 140 F14G 10 114 116 -146 15415 6 g FIG. 21, 144 152 143