"Safety and Efficacy of a Totally Subcutaneous Implantable-Cardioverter Defibrillator" 
Circ Aug 27
http://circ.ahajournals.org/content/128/9/944.full 
"Background—The most frequent complications associated with implantable cardioverter-defibrillators (ICDs) involve the transvenous leads. A subcutaneous implantable cardioverter-defibrillator (S-ICD) has been developed as an alternative system. This study evaluated the safety and effectiveness of the S-ICD System (Cameron Health/Boston Scientific) for the treatment of life-threatening ventricular arrhythmias (ventricular tachycardia/ventricular fibrillation)."
"Conclusions—The findings support the efficacy and safety of the S-ICD System for the treatment of life-threatening ventricular arrhythmias."