I know this is a Long Long Shot but I need help with financing....

I have good credit. Like in the 615's not great but not bad. I am trying to have surgery before I end up tipping the scales past 256.... I have tried to apply for care credit, surgeryloans.com, etc. but no one will finance because I have too many inquiries. I have tried with co signer (mom, dad) but they have worse credit than I do. I want to know if there is any one out there who is willing to co-sign for me. I know its a huge risk and I have a likely chance of zero but I am desperate and insurance said no twice and I can't seem to get it on my own. If it helps any I have a great job and work overtime and very dependable we could even make a contract to make sure it doesn't hurt your credit. I would do anything for help from fellow members or if you know someone. Plz last resort. Email me if you would like @ brenpren07@yahoo.com.....Thanks much!!!