GUILFORD, Conn.--(BUSINESS WIRE)--Defibtech, LLC – a leading designer and manufacturer of automated external defibrillators (AEDs) – announced today that the company has shipped more than 50,000 of its DDU-100 Series AEDs. The company’s defibrillators, which revive victims of sudden cardiac arrest, are marketed under the brand names of Lifeline™ and ReviveR™.