The only thing I can think of the would be some help to you without breaking the bank would be a bottoms up leash. I included the website belowe. As far as a pet ambulance I have never heard of such a thing.
Hope the website works..You can normally find them at Petco or a petsmart. Best of luck and I hope your babies days are love filled and pain free


http://www.handicappedpets.biz/www/p...nd-slings.html