The xEM (x = injectable cylinder) and EM because the first product was made with EM4102 chips, eventually gave rise to the flexEM. The custom formulated biopolymer encapsulation method has served DT well, however the flexEM is pushing the limits of what it can do, and the process for disc shaped devices produces a lot of wasted polymer.
After current inventory runs out, we will be introducing the dT5 (d = disc, T5 = the T5577chip type). While resin products are thicker than biopolymer encapsulation, failure rates are expected to be practically zero. But there’s two pieces of good news;
Our flex products carry a limited warranty but resin products will have a lifetime warranty against manufacturing defects, encapsulation failures, etc.
The dT5 product is 16mm diameter while the flexEM is 18mm, so while thicker it will be smaller diameter, which means smaller incisions.
Considering the sizes involved, and dT5 likely being the smallest resin disc product, I would opt for caution. While robust, they are not impervious to shattering / cracking / breaking if you put considerable pressure on them, though much more than glass. The problem is the size / dimensions of discs create a huge flat surface area which can easily act like a lever, or be acted upon by much smaller points of force which would make those points of force into fulcrums. The thickness of discs and resin products is kept as low / thin as possible, which directly impacts the ability to withstand exactly this scenario.
Considering this, I personally would not go for P0 (palm side) except for anything, except for maybe a very small magnet.
I see. I was mostly referring to the outer P0, as in immediately between the 1st and 2nd metacarpals, though I think your points stand for both.
I figured that the question might come up (and I’m still waiting on work to pass our upgrade to DESFire creds so I can consider a custom implant, in which case I’d opt for resin over polymer)
I think it will be fine installed in standard P0 from a durability perspective, I would be more worried about the edges pushing up against your skin depending on the size of your hand.
Having installed several of these resin discs at the meetup I absolutely love this material compared to the biopolymer. It’s sturdier so you can really push on it to get it in, which means smaller entry wounds. The biopolymer is great because it’s super thin and the resin is pretty thick, but I would be pleased if more things transitioned to the resin
