Physio-Control Corporation was founded in 1955 by Dr. Karl William Edmark as a manufacturer and distributor of emergency defibrillation and automated CPR equipment. The company's products are primarily for the emergency treatment of Sudden Cardiac Arrest (SCA) Events. The LIFEPAK line of Defibrillators includes both advanced units for ACLS trained personnel, as well as Automated External Defibrillators (AEDs) for use by First Responders and the general public.