In view of any one of the FIGS. 2, 3, 6 through 8, it is evident that the fixation unit 214 is configured to attach the loop structure 210 around the body part (FIGS. 3, 6 310) such that i) the loop structure 210 and the implantable receiver coil 212 are arranged in an interlocked first hopf link configuration, and ii) the loop structure 210 and the transmitter coil 220 are arranged in an interlocked second hopf link configuration.
In an embodiment, the fixation unit 214 is selected from a group consisting of a non-magnetic fixation unit (FIGS. 4A through 4E and FIGS. 5A through 5D) and a fixation mechanism that is adapted to attach the loop structure to a user's body independent of any cooperation (interaction) with the implantable unit (FIGS. 4 and 5).
In an embodiment, the fixation unit is selected from a group consisting of a clamp mechanism (FIGS. 4E, 5B, 5D), spring mechanism (FIG. 5A), piercing pin mechanism (FIGS. 4A, 4B, 4C, 4D, 4E), snap-coupling mechanism between the first sub-structure and second sub-structure (FIGS. 4C, 4D, 5D), a magnetic coupling mechanism between the first sub-structure and second sub-structure, and a combination thereof (FIG. 5D).