Anyone had any luck with....

Has anyone had any luck with alternative financing? I am looking at going to Mexico to have surgery...but I have no insurance and am waiting for SSI to approve my claim. So, I have only my husband's income. The surger cost in full down there is about $8k which is great...but can't afford that all in one shot. Has anyone else found a way to do this? I know there are financing companies, but credit is shot. Beginning to think it's hopeless. Dahlia