REDMOND, Wash.--(BUSINESS WIRE)--Physio-Control, Inc., a global leader in emergency medical solutions and wholly-owned subsidiary of Medtronic, Inc., (NYSE: MDT), today announced commercial availability of the ReadyLink™ 12-Lead ECG device, a new, U.S. Food and Drug Administration (FDA) 510(k)-cleared solution designed to improve care for heart attack patients and expand regional STEMI systems.