Earlier quoted context omitted.
That second discussion got heated quite fast. I agree with the downvoters though. 3D printing a medical device is not something to take lightly. Edit: Here's why I agree. You download this design from the internet, and 3D print the parts. You then assemble it. Awesome! Some time later, you get an allergic reaction. You use the pen, but it fails to work correctly. Who's responsible? The designer? You (if you're alive)…
Scarcity demands innovation. I don't think its being taken lightly; more like, "a private company is gouging medical users and the government won't step in". Not left with many options when your life depends on it. EDIT: Alternatively, a "better" temporary solution would be to arrange for the import of these from Canada, where the price is fixed by the government.
It turns out when you have millions of people dealing together as a block, they have much more bargaining power.