A new emergency care center would replace the shuttered St. Vincent's Hospital Manhattan in Greenwich Village under a deal announced on Thursday involving the hospital, its creditors, a developer and a hospital chain that would run the center. The agreement revives an earlier plan by the Rudin development family to buy the St. Vincent's properties on West 11th and 12th Streets and replace some of its buildings with town houses and apartments. The emergency care center would be opposite the residences, in the landmark O'Toole building on Seventh Avenue. Under the plan, it would provide 24-hour emergency care and ambulatory surgery, but not the comprehensive services of a full-fledged hospital. It is to be run by the North Shore-Long Island Jewish Health System and will be called the North Shore-LIJ Center for Comprehensive Care.