Mass. Movers

Boston Scientific Corp.’s shares slip

Boston Scientific Corp. is based in Natick.
Globe File/2001
Boston Scientific Corp. is based in Natick.

Shares of the medical device maker Boston Scientific Corp. declined Tuesday, a day after the company said it had agreed to buy Rhythmia Medical Inc., a Burlington developer of medical software. Boston Scientific will pay about $90 million upfront and make as much as $175 million in milestone payments over five years. Rhythmia develops mapping and navigation software for use in cardiac catheter ablations, a way to treat abnormal heart rhythms, and other electrophysi0logy procedures, including atrial fibrillation and atrial flutter.