This is very clever. I really like the idea of building off of the medicine symbol (I'm assuming you had this in mind, and even if not, I do!). Can you try a couple of additional variations. Something that could elude to the medicine insignia, but continue to play to our shape idea... I wish I had more direct guidance, but what I know is that I really like this idea, it's just not the leading logo in my mind.
I good version of what we consider the medical symbol can be found here:
http://www.google.com/imgres?q=medicine+symbol&hl=en&client=safari&sa=X&rls=en&biw=1115&bih=582&tbm=isch&prmd=imvns&tbnid=rmnALlELVNVqmM:&imgrefurl=http://templeofenki.bravehost.com/serpent.html&docid=WPilptzO7XrN6M&imgurl=http://templeofenki.bravehost.com/myPictures/medical_symbol_md.jpg&w=260&h=275&ei=QtPoTuLmJaOOigLh_fmiDA&zoom=1&iact=hc&vpx=702&vpy=251&dur=792&hovh=220&hovw=208&tx=91&ty=182&sig=100498610026600592958&page=1&tbnh=165&tbnw=156&start=0&ndsp=10&ved=1t:429,r:8,s:0)
Thanks