https://wiki.project1999.com/Embalmers_Skinning_Knife and bind wound are your best bet for quick healing on an Enchanter, up to 50% of course.
https://wiki.project1999.com/Zlandicar's_Heart is the better option, but hard to get.
The Tsernia Staff idea could work ok of you proc on the monsters you are fighting rather than an eye. In combat you are more likely to be standing anyway due to spell casting, so swing on the mob in between spell casts to see of you get lucky. You might have to fear the mobs though. Been a while since I've played my Enchanter, but I recall the mob always turns to me if I get within melee range, so I don't think you can just let you pet tank and swing.
EDIT: Enchanters get slow obviously, so you could joust with Tsernia Staff to avoid getting hit while your pet tanks.