Stryker Corp., of Kalamazoo, Mich., is continuing its string of buys, this time scooping up Shirley, Mass.-based Mobius Imaging LLC, which focuses on point-of-care imaging technology, and its sister company, Cardan Robotics. In an all-cash transaction, Stryker will pay about $370 million up front and up to $130 million of contingent payments associated with development and commercial milestones.