CORONARY SINUS MEDICAL ELECTRICAL LEAD

The present invention may comprise an improvement to the prior art leads as disclosed above. In a preferred embodiment, the invention comprises an medical electrical lead that includes an elongated lead body. The elongated lead body comprises a length between a proximal end and a curved distal end, the lead body defining a Iongitudinal axis extending between the proximal end and the distal end. The lead body having an outer circumference and provided with a set of electrodes circumferentially spaced apart. Each electrode includes an electrically active portion and an insulated portion at an outer circumference of the electrode along a first longitudinal plane and along a second Iongitudinal plane diametrically opposed to the first longitudinal plane are insulated electrodes. Each electrode is configured to include a guide aid to engage with a non-conductive housing.