For any production ready software you plan a budget around the cost of a new car. Mostly even a lot more.

Just finishing a software project takes at least 80% of time and money besides the other 80% already done. Sounds funny, but I want to make it clear that effort and time of projects are almost always extremely underestimated.

If you need funding, the best and most reliable way is to have a customer willing to pay for development. In your case try to use contacts to hospitals and simply ask them if they are interested. When you hit a spot (and the right person) you might be surprised how easy money comes when someone needs or wants something…