MR-compatible implantable medical lead

摘要

A medical electrical lead may include a conductive electrode shaft located near the distal end within the lead body, a coiled conductor extending within the lead body from the proximal end and coupled to a first end of the conductive electrode shaft, and an electrode located near the distal end of the lead body and coupled to an opposite end of the conductive electrode shaft as the coiled conductor. The lead may also include an energy dissipating structure located near the distal end of the lead body and defining a lumen through which a portion of the coiled conductor extends. The energy dissipating structure may include a region having one or more protrusions extending toward a central axis of the lumen to push the coiled conductor off center relative to the central axis of the lumen.

主权项

1. A medical electrical lead comprising:
a lead body having a proximal end configured to couple to an implantable medical device and a distal end; a conductive electrode shaft located near the distal end within the lead body; a coiled conductor extending within the lead body from the proximal end and coupled to a first end of the conductive electrode shaft; an electrode located near the distal end of the lead body and coupled to an opposite end of the conductive electrode shaft as the coiled conductor; and an energy dissipating structure located near the distal end of the lead body and formed from a conductive material that defines a lumen through which a portion of the coiled conductor extends, wherein the energy dissipating structure includes a region having one or more protrusions extending toward a central axis of the lumen defined by the energy dissipating structure to push the coiled conductor off center relative to the central axis of the lumen formed by the energy dissipating structure.