The role of some cardiac device makers is evolving in the cath lab as they expand from selling products to providing services and solutions. It’s a trend that is likely to continue globally. About four years ago, Kevin F. Fox, MD, faced a predicament. His hospital system needed new equipment for catheterization labs but lacked the capital to buy it. As chief of cardiology at Imperial College Healthcare NHS Trust in London (U.K.), he and administrators weighed their options.