I'm sure he wants to sell it to those who need it, but I don't think that this means he cares that much whether it's successful as a medical device. He generally cares whether some device appears to work well enough that he can sell it, especially to investors, and far less about whether it actually solves a problem/doesn't introduce worse problems.

Tesla FSD is the best example of something he's been selling for at least 7 years now without it actually working as advertised. Cybertruck was sold long before it came out, and now they're producing only a trickle. Roadster has been sold by the tens of thousands and it's not even in a design phase yet. Solar Roofs was presented to investors as a working product when it was a plastic mockup. There are probably others.