Michael - I recommend you come take a look at the tool we built to help medical device innovators like yourself. The brainchild of a former Entrepreneur-In-Residence at the FDA, we've documented with step by step guidance some 33 major regulatory processes for medical devices.
And this goes to the top question this way: VCs for healthcare are a highly specialized group. Precisely because this is a heavily regulated industry, and the cycle from innovation to fruition is long, it requires a lot more expertise and thus has fewer players in it. One area to look at - particularly early stage - is for grants. Governments, both in the USA and the EU provide a lot of the seed funding that normally is associated with Angel Stage investing.
For instance in France, the Angel stage occurs roughly when for other products you would be expecting to be doing Series A, and Series B at Series A.. and on down the line. Everything gets time shifted. So I would start looking for government grants and/or research institutions to partner with for early stage funding