Lille had dedicated nearly every minute and second of his time to constructing a new auxiliary heart based on Lizard Serum.
As it was still unknown what the difference in the flow of time between the two worlds would become, he had to hurry to get this device done.
Overall, its structure was quite simple and could essentially be seen as a minor modification to the original prosthetics.
Although technology in 2011 didn't offer much in the way of bioplastics, if done well, it was possible to hide those small components that would cause a massive immune reaction inside the auxiliary heart.
Designing was a complex process, but the real trouble was how to implement the modifications:
The prosthetics were directly in the body, and naturally, the modifications had to be made inside the body too— but who would perform the surgery?
Lille came up with a method: performing the surgery on himself.
