Even Small Medical Advances Can Mean Big Jumps in Bills

Do open-source insulin pumps exist?

I found this site with some software: http://www.opensourcediabetes.org/tools.php

but no hardware.

Considering the prevalence of type 1 diabetes at 3 million Americans (1%), and how big an impact this disease has on people's lives, I'm surprised that there aren't more developers who are either afflicted or have a loved one who is that hacks on open source diabetes projects.