The juxtaposition here is that if you have access to highly trained medical professionals, you probably don't need the foam in the first place. I could see potential use for it on the military battlefield possibly, but not much use in normal civilian times. But it's a new concept, so who knows where it will find use? Sounds a bit on the weird and scary side to me, but then so does using leeches on wounds, and they still do that today.