One embodiment of the present invention provides an implantable cardioverter-defibrillator
for subcutaneous positioning between the third rib and the twelfth rib within a
patient, the implantable cardioverter-defibrillator including a housing including
a first electrode; a telescoping lead assembly including a second electrode, wherein
the telescoping lead assembly is electrically and mechanically coupled to the housing;
and an electrical circuit located within and electrically coupled to the housing.