Implantable medical lead with shield

Abstract

An example implantable medical lead includes a first defibrillation electrode and a second, defibrillation electrode, the first and second, defibrillation electrodes configured to deliver first electrical therapy comprising anti tachyarrhythmia shocks. The implantable medical lead also includes a pace electrode disposed longitudinally between the first defibrillation electrode and the second defibrillation electrode, the pace electrode configured to deliver a pacing pulse that generates an electric field proximate to the pace electrode. The implantable medical lead further includes an inflatable shield disposed over a portion of an outer surface of the pace electrode, wherein the inflatable shield is configured to extend laterally away from the pace electrode upon inflation, wherein the inflatable shield is configured to impede an electric field of at least, one of the first and second the electrical therapies in a direction away from a heart of the patient.