Physio-Control LIFEPAK defibrillators have been on the front lines of emergency medical services, fire, and police departments for years. Physio-Control was founded in 1955 and is headquartered in Redmond, WA. The company is considered a pioneer in the defibrillator industry, with deep roots in research and innovation. Ten years after releasing the first DC defibrillator prototype, Physio-Control introduced the first-ever portable defibrillator/monitor. It’s long been a market leader and is widely trusted by healthcare professionals and first responders.