So, he wasn't getting a name. Instead of answering outloud, Black Jack just returns the glare.

"You don't have to watch this. Just keep him awake and keep talking to him"

With fair warning given, he cuts the material to the teenager's pants, his eyes narrowing when the full amount of damage was revealed. The make shift tourniquet was serving it's purpose, but he knew he had to work quickly before the lack of blood flow began to affect the rest of his leg. The fact that there was no longer any manageable solid bone made things a lot easier as he began severing the crushed limb from it's owner.