St Jude Medical Inc a global medical device company Tuesday announced completion of its acquisition of Nanostim Inc. a developer of miniaturized and leadless pacemakers. The acquisition adds the world's first and only leadless pacemaker to the St Jude Medical product portfolio and culminates a two-year partnership between the two companies during which St Jude invested in and collaborated with Nanostim throughout its product development and commercialization initiatives said a release by St. Jude here. Unlike conventional pacemakers that require a more invasive surgery the Nanostim leadless pacemaker is designed to be implanted directly into the heart via a minimally