MRI compatible lead coil

摘要

Various embodiments concern leads having low peak MRI heating for improved MRI compatibility. Various leads include a lead body having at least one lumen, a proximal end configured to interface with an implantable medical device, and a distal end. Such leads can further include a conductor extending along at least a portion of the lead body within the at least one lumen and a defibrillation coil extending along an exterior portion of the lead body and in electrical connection with the conductor, wherein at least a section of the defibrillation coil is under longitudinal compression. The longitudinal compression can lower peak MRI heating along the defibrillation coil. The longitudinal compression may maintain circumferential contact between adjacent turns of the section of the defibrillation coil.

主权项

1. A lead having low peak MRI heating, the lead comprising:
a lead body having at least one lumen, a proximal end configured to interface with an implantable medical device, and a distal end; a cable conductor extending along at least a portion of the lead body within the at least one lumen; a coil extending along a portion of the distal end of the lead body, at least a section of coil exposed along the portion of the lead body and configured to deliver electrical stimulation therapy, the section of the coil under longitudinal compression to lower peak MRI heating along the section of the coil; and at least two couplings mechanically and electrically connecting the cable conductor to the coil, where the at least two couplings maintain longitudinal compression of the section of the coil.