Multi-electrode epicardial pacing

A method for epicardial pacing of a heart of a human patient, the method comprising:

• percutaneously inserting a delivery sheath into the patient and navigating a distal end portion of the delivery sheath to within a pericardial sac of the patient;
• deploying an epicardial pacing lead device through a first lumen of the delivery sheath, the epicardial pacing lead device comprising:
• a first shaft having one or more electrodes disposed thereon;
• a second shaft having one or more electrodes disposed thereon;
• and
• an elongate flexible spacing member slidably disposed in a lumen of the first shat and extending from a distal portion of the first shaft to a distal portion of the second shaft, wherein each of the first and second shafts include insulation such that at least some of the electrodes are insulated electrodes that inhibit emanation of electrical fields therefrom in a particular direction corresponding to the insulation's location;
• orienting the epicardial pacing lead device so that the one or more electrodes at least partially contact myocardium of the patient;
• after deploying the epicardial pacing lead device from the delivery sheath and while the epicardial pacing lead device remains so deployed, modifying a tension of the elongate flexible spacing member such that a distance between the first shaft and the second shaft is modified;
• and
• activating a source of electrical energy to provide pacing energy to the myocardium of the heart via the one or more electrodes, wherein the insulation of the insulated electrodes inhibits extracardiac stimulation.