Implantable lead for septal placement of electrode with fixation mechanism in the pulmonary artery

A method comprising:

• providing a lead having a lead body extending from a proximal end to a distal end and having an intermediate portion, the lead having an electrode coupled to the intermediate portion, wherein the distal end of the lead includes a pre-formed, biased shape including a spiral configuration to passively fixate the pre-formed biased shape of the distal end of the lead within a pulmonary artery;
• and
• inserting the lead through a right ventricle and into a pulmonary artery using a guiding catheter or stylet and then removing the guiding catheter or stylet when the pre-formed biased shape is in the pulmonary artery such that the electrode is proximate a ventricular septum or a ventricular outflow tract and the pre-formed biased shape of the distal end is passively fixated within the pulmonary artery such that the spiral configuration contacts a wall of the pulmonary artery in a plurality of longitudinally spaced locations.

A method comprising:

• providing a lead having a lead body extending from a proximal end to a distal end and having an intermediate portion, the lead having an electrode coupled to the intermediate portion, wherein the distal end of the lead includes a pre-formed, biased shape including a spiral configuration to passively fixate the pre-formed biased shape of the distal end of the lead within a pulmonary artery;
• and
• inserting the lead through a right ventricle and into a pulmonary artery using a guiding catheter or stylet and then removing the guiding catheter or stylet when the pre-formed biased shape is in the pulmonary artery such that the electrode is proximate a ventricular septum or a ventricular outflow tract and the pre-formed biased shape of the distal end is passively fixated within the pulmonary artery such that the spiral configuration contacts a wall of the pulmonary artery in a plurality of radially spaced locations.