Hello! An English description of the joint can be found here: " As soon as the being experiences an unconsciousness like death, they are suddenly restored to full health and the attacks begin again." The Sanskrit word in question is संजीव्.
If 等活is used with hell, in my opinion, it just means "wait for resurrection". Maybe there are many hells, and one of them is a hell for your next life. I think you can find the best answer in the manhua you are reading