Hello!
you could look into GNU Health, it is a really great free Health and Hospital Information System!
It was packaged for debian med, but I think it has been taken out (because of some release cycle conflicts with tryton, an ERP on which it is based on). Not sure though.
You could download the latest
tryton client 3.2.2 and connect yourself to the GNU Health demo database see section "The online demo database"
or install it yourself
Take a look, maybe they have something you can build your work on and feel free to talk to the GNU Health community about your ideas as well:
Best of luck!