retained by St. Jude Medical and had served as company chief operating officer since 2001. In January 2005, St. Jude Medical acquired Saint Paul, Minnesota-based Endocardial Solutions for $272 million. Endocardial Solutions manufactured diagnostic and therapeutic devices used to treat atrial fibrillation. Later that year the company acquired Plano, Texas-based Advanced Neuromodulation Systems for $1.3 billion. At the time of its acquisition, Advanced Neuromodulation Systems was the second-largest supplier of devices that use electrotherapy to treat chronic pain and nerve disorders. In 2008, St. Jude Medical acquired MediGuide, an Israeli company that developed technology that uses tiny sensors to locate medical devices inside of a patient's body and increase the amount of information available to a doctor during medical procedures. 2010s St. Jude Medical acquired AGA Medical for $1.3 billion in October 2010. AGA Medical was a Plymouth, Minnesota-based company that manufactured products that treat heart defects, including plugs and patches that fix holes and other cardiac defects. In 2010 the company also acquired LightLab Imaging, a company that developed optical coherence tomography technology that helps doctors treat heart disease. In 2010, St. Jude Medical invested in an option to acquire CardioMEMS Inc., a medical device company that developed a wireless sensing and communication technology to monitor pulmonary artery pressure (PAP) in heart failure patients. CardioMEMS Inc. was acquired by St. Jude Medical in May 2014. In August 2012, St. Jude Medical reorganized its business operations. The company folded its four product divisions into two operating units: the implantable electronic systems division; and the cardiovascular and ablation technologies division. The company also centralized other functions including the marketing, information technology and legal departments. St. Jude Medical's reorganization coincided with layoffs of about 5% of the company's global workforce. In 2013, St. Jude Medical acquired Endosense, a Swiss company that developed a catheter that measures the force a doctor places on a patient's heart wall during a catheter ablation procedure. St. Jude Medical paid $330 million for the company. In June 2013, St. Jude Medical entered into a series of agreements under which the company made a $40 million equity investment in Spinal Modulation, Inc. In May 2015, the company completed the acquisition of Spinal Modulation, developer of the Axium Neurostimulator System. St. Jude Medical acquired Nanostim Inc., a Sunnyvale, California-based privately owned developer of miniaturized, leadless pacemakers, for $123.5 million in October 2013. The acquisition followed the approval of Nanostim's