Boston Scientific gets OK for new stent

Boston Scientific Corp. gained US approval for a new version of its drug-coated heart stent. The Natick-based company said it will immediately begin making and selling the Promus Element stent system. It licensed the original Promus device from Abbott Laboratories, which sells it under the name Xience. The approval “marks an important milestone’’ because it will allow the company to manufacture its own device rather than licensing it from a competitor, CEO Hank Kucheman said.