Hey Josh! It's so true that your investor needs to understand the space your startup is operating in.
Jumpstart Foundry is a seed-stage healthcare venture capital firm that only invests in healthcare-- thus their network is industry specific! Check it out-- Jsf.co
Andreessen Horowitz (a16z) has a new fund that may be what you are looking for. Its a small fund (about $250MM), that is primarily looking for early stage health-tech opportunities. You can take a look at the fireside we recently did with Scott Kupor, the COO and Managing Partner of a16z, where we briefly touched on the new fund and its focus.
Sounds as though you have something very interesting, and hope that this lead helps and that you are able to finish out your round quickly! Here is the link https://livestream.com/pemo/scottkupor