I doubt that these bandages are marketed for life threatening situations, otherwise they would sell them in larger sizes for consumer use. It must be targeted at the convenience factor.

You might be on Heparin, you've got this small cut that you're not going to call 911 or go to the ER for, but darn it, it keeps bleeding all over my new, white pants and I'm running out of Kleenex! It's a situation like that where I can see this product being targeted at. The chitosan matrix creates a waterproof seal and stops external blood leakage, and eventually, your compromised clotting ability will finally catch up and stop the bleeding from within. Clean, convenient.