"could drive toward .0001 imo"
I'd guess anything is possible of course with a nano-cap OTC stock. The all time low for BHRT is .0063 (6/10ths of 1 cent) in Dec 2013, so it has hit the double zero after the decimal at least once so far.
Would it ever hit the .000X territory? Anything is possible I guess, IMO, given enough dilution and continual use of convertible debt for financing -from what I've seen with other OTC nano-caps. If they get it up in the billion shares area, who knows? I don't think reaching the billion shares O/S is far fetched at all given the pace at which they've been diluting.
All just my amateur guesses and opinions too.