See those three fluid inlets on the back in the render? Or what look a lot like quick-disconnect hose fittings, at least, and no wonder; this is among other things a life support system for brain tissue, and will minimally need to maintain hydration and exhaust waste. Operating the machine at all will certainly require engineering and environmental services only feasibly available in a professionally staffed and maintained laboratory.
That is one of the reasons why the "buy" CTA dispatches to a contact form. They can and must vet potential customers.
Yes, this is a given. I mean that replacing neurons may require a specific knowledge of this machine, and procedures unique to it.
If I were to create such a machine, I'd make the whole top part replaceable, with the bottom part electronic-only. When your neuron culture runs its course, you detach the top part and ship it back to the maker, and buy a new one, with a fresh culture, at a discount. They recycle the top parts by cleaning them and re-populating them with new neurons. The sourcing liability is on them, as is quality control.
That is one of the reasons why the "buy" CTA dispatches to a contact form. They can and must vet potential customers.