In addition to such weapons, there are also other solutions to the problem:
1. Use a healer. Cait in her witch attire should be more of a help to your survival than a "health leech" weapon.
2. Use a companion with abilities that protect you. I mean Kiyoko (in her latest set) or Atugia.
3. Optimize your character as a damage dealer and defeat your enemies faster than they can do to you.
A simple example of such a build: Dagger in the right hand, short sword in the left, use (Equilibrium,) Cleave, Crowd Control and Smoke Bomb as Powers. Start with Smoke Bomb, then sweep them away with your AoE attacks. Alternative option: replace one of the AoE attacks with Sure Shot.
Please note: this is not the best options, just an easily accessible build with common weapons and a low-level set of Powers.
4. Don't forget that as of version 0.5.0, enemies now ALWAYS attack the character with the highest Threat level. So if you have a tank in your group or a Damage Dealer that exceeds you in damage: not you, but (s)he will become the priority target of enemies, you will receive damage only from AoE attacks.
Don't forget that Obscurement helps keep Threat levels low if you're having trouble with it intermittently.
P.S. Use Trail Rations on a daily basis (duration 24 hours), thanks to this item you will have full health recovery at the end of the battle.