Implantable medical lead shield

A method comprising:

• positioning an implantable medical lead at an implant location within a patient, wherein the implantable medical lead comprises:
• a first defibrillation electrode and a second defibrillation electrode, the first and second defibrillation electrodes configured to deliver anti-tachyarrhythmia shocks;
• a pace electrode disposed 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;
• coupling a distal end of a tool to a coupling member of a shield, wherein the shield is configured to impede an electric field of an electrical therapy in a direction from at least one of the first defibrillation electrode, the second defibrillation electrode, or the pace electrode away from a heart of the patient;
• positioning, via the tool, the shield at the implant location;
• and
• deploying the shield between the implantable medical lead and tissue at the implant location anterior at least one of the first defibrillation electrode, the second defibrillation electrode, or the pace electrode, wherein, when deployed, the shield is configured to impede an electric field in a direction from the at least one of the first defibrillation electrode, the second defibrillation electrode, or the pace electrode away from the heart.

A shield comprising:

• a biocompatible material configured to be implanted in a patient separately from an implantable medical lead and disposed anterior at least one electrode of the implantable medical lead, wherein the shield is configured to impede an electric field of the at least one electrode in a direction from the at least one electrode away from a heart of the patient;
• one or more radiopaque markers configured to indicate at least one of an orientation or a position of the shield;
• and
• a first coupling member configured to attach to a distal end of a tool when the shield is implanted.