Joe Landolina: This gel can make you stop bleeding instantly

I could see this as a way to stop hemorrhages, except we would need to solve the problem of not completely blocking the artery that burst and thus changing the stroke to ischemic.  Oh well, what would life be without challenges? A TED talk.
http://www.ted.com/talks/joe_landolina_this_gel_can_make_you_stop_bleeding_instantly?

Forget stitches — there's a better way to close wounds. In this talk, TED Fellow Joe Landolina talks about his invention — a medical gel that can instantly stop traumatic bleeding without the need to apply pressure. (Contains medical images.)