I’ve been wondering if the following ideas might work. Surely Amal and those versed in body artistry on this here board can answer.
So say we want an implant with the same performances as a full-size credit card (who wouldn’t ) It would have to have coil roughly 3" in diameter. If such an implant was a FlexEM-style disk, that’s a 7 square inch area of skin that’s essentially dissociated from the flesh underneath. Not acceptable - at least I suppose it can’t be terribly healthy.
Now then, suppose the middle of the disk is hollowed out: the implant becomes a circle with a rim a fraction of an inch wide. To implant this, instead of cutting open and lifting a huge flap of skin, the body artist could scalpel-cut a circle, say, 2" in diameter, lift the skin over half an inch around the outside of the cut, insert the implant a bit like one pushes a tube into a bicycle tire, then close up the circular wound.
I imagine the end result could be quite satisfactory. However, what I also see is a 6 1/4"-long circular cut that’ll bleed profusely, require an phenomenal number of stitches or dermaclips, take forever to heal, and that has all the chances of staying visible for a very long time. Or would it?
As for the implant itself, would it be too difficult to make, too fragile outside of the body, possibly too fragile inside the body as well?
So to avoid the butchery, I had another hare-brained idea: an almost circular implant - i.e. it’s not closed. The antenna would essentially be a 9 1/2" curved, thinner version of the FlexDF that forms an open 3" circle.
The implant would be inserted with a large question mark-shaped “needle”, that would puncture the skin at one point, snake around under the skin until it does a full 360. Then the implant would be pushed out of the needle a bit, the body artist would pinch the far end, then retract the question mark needle by rotating it out the way it went in, leaving the implant in place.
For this one, I think the main problem would sourcing the large question mark needle. It would have to be a custom machining job, so not cheap.
As for the implant, I’m under the impression that a proper coil should be complete loops, not almost circular lengths of copper wire zigzagging back and forth along a circular-shaped path - simply because the induction current in the lengths of wire going one way would be cancelled out by the opposite current generated in the lengths going back the other way. Or said another way, there would be almost no area swept by the actual coil, therefore very little induction. So performance-wise, it may very well suck big time for its size. But maybe I’m mistaken and it could work.
What do you think?