US 12,472,369 B2
Implantable medical lead shield
Elizabeth K. Formosa, Santa Clara, CA (US); Kevin R. Seifert, Forest Lake, MN (US); Vladimir P. Nikolski, Blaine, MN (US); and Mark T. Marshall, Cape Coral, FL (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Dec. 14, 2022, as Appl. No. 18/065,861.
Claims priority of provisional application 63/265,762, filed on Dec. 20, 2021.
Prior Publication US 2023/0191142 A1, Jun. 22, 2023
Int. Cl. A61N 1/39 (2006.01); A61N 1/05 (2006.01); A61N 1/362 (2006.01)
CPC A61N 1/3931 (2013.01) [A61N 1/0587 (2013.01); A61N 1/3621 (2013.01); A61N 1/39622 (2017.08)] 19 Claims
OG exemplary drawing
 
1. A medical device system comprising:
an implantable medical lead comprising:
a first defibrillation electrode and a second defibrillation electrode, the first and second defibrillation electrodes configured to deliver anti-tachyarrhythmia shocks; and
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; and
a shield configured to be implanted in a patient separately from the implantable medical lead and disposed anterior at least one of the electrodes, 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, wherein the shield comprises a coupling member configured to attach to the implantable medical lead when the shield is implanted.
 
11. 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.