If you are always injured during raids, you must refine your approaches or methodology. All raiders go through this process. As one player puts it, you can't get out of missions/raids in a survival game unscathed.
The thing is, if you're in a top 10 alliance you don't even have to set foot outside your compound to get several high grade injuries daily; simply being a valid points target means others will cause you injuries by raiding you, regardless of your 'methodology'.
The only methods I can see with the current system:
1) have a high level main farming meds for your raiding alt.
2) WF for a round, build up bandage stocks, raid for a round, rinse and repeat.
3) Have generous farmers in your alliance who will give out stacks of bandages free during the war to keep us active raiders going (there are guys and gals in my alliance who do this, thankfully, but probably not in most).
Raiding is already low on reward compared to the effort required and there are few active raiders as it is, so I feel the scarcity of bandages only further discourages people from participating.
I've actively raided in the past 3 alliance wars on Kong, mainly surviving on med hand-outs from others in my alliance. Even so, my main had to take a break this round to build up grenade and bandage supplies, so I raided on an alt which I stacked with grade 3 bandages. Next round, I'll swap over and give my alt a break. not everyone can do this. I'm not even arguing this for my benefit, but to try and call for a more inclusive system which would encourage others to participate. I can keep getting fuel every round and if that was my only aim I'd argue to keep bandages hard to find, but it's no fun if only a tiny number of people are involved.