Leads for use with implantable medical devices are provided. One microlead is intended to be implanted in the venous, arterial, or lymphatic networks. Its diameter may be at most equal to 1.5 French (0.5 mm), and it may include a plurality of micro-cables each including: an electrically conductive core cable for connection to one pole of a multipolar generator of an active implantable medical device, and a polymer insulation layer surrounding the core cable. At least one exposed area may be formed in the insulation layer to form a detection/stimulation electrode.
