After the Ranger rite I was told that Oflovak's road (where the rite is situated) is the only place where Rangers provide ressurection (there are special rescue ranger teams for that). High Powers have no altairs nor camps in that wild area.
How can Homins resurrect by themselves ?
It is a bit easy in my opinion, Ranger should not have the technology to resurrect Homins, not even the energy for it.
To mention here, a resurrection implies a death, so no coma.
No healing, it is a destruction of the cells and reconstruction with post-traumatic result in some case.