Shrapnel Removal: Dig deep into your heart! Literally.

[Remmon]

More questionably useful field medicine like this could be pretty fun! I like the idea of a couple of folks busted up by some explosion/gunman can try and fix themselves up a little if they're too far away from medbay.

I wish there was more use for improvised surgical tools, aside from "Oh someone stole the scalpel and the fabricator isn't very close so i'll use a glass shard". The fact that you can only perform surgery on surgical tables really removes any necessity to use improvised tools as there is a huge pile of them next to any surgical table. It'd be nice if you could perform surgery on regular tables, or even on the ground using tools you'd carry in a toolbox, or something you can get from the general area. Basically the only improvised tool that is used a lot is the zippo as you can cauterize wounds.

Have you tried a kitchen knife and I think was the chainsaw? Note that your victim has to be unconscious to perform surgery on an ordinary table.