There are a lot of people hacking on insulin pumps and they are lightyears ahead of commerce. If you want a very interesting rabbit hole to dive into try 'artificial pancreas hacking' as google feed.
I would trust the people that hack on these systems to be even more motivated than the manufacturers to make sure they don't fuck up, it's the equivalent of flying a plane you built yourself.
One interesting link:
https://www.drugtopics.com/view/hacking-diabetes-the-diy-bio...
I would trust the people that hack on these systems to be even more motivated than the manufacturers to make sure they don't fuck up, it's the equivalent of flying a plane you built yourself.