Medical News Today -- Boston Scientific Corporation (NYSE: BSX) announced CE Mark and the first human implants of the Company’s ENDOTAK RELIANCE(R) 4-SITE defibrillation lead system. Defibrillation leads are insulated wires that connect an implantable cardioverter defibrillator (ICD) or cardiac resynchronization therapy defibrillator (CRT-D) to the heart and, when needed, deliver life-saving therapy.