The Medical-Products industry group jumped to No. 49 in IBD's industry rankings Tuesday, after a surprise announcement Monday from Boston Scientific (BSX). Boston's shares dived 13% Monday after it announced it would pull all its implantable cardiac defibrillators, or ICDs, from the market. Boston Scientific is the second-largest player in the $4.3 billion market for the devices, which are surgically implanted in at-risk patients to shock their