Electrical stimulation leads having RF compatibility and methods of use and manufacture

摘要

An implantable lead has an inner core, a plurality of coiled conductor guides, and a plurality of conductors. The inner core defines a plurality of lumens. Each coiled conductor guide defines a plurality of helical lumens. Each coiled conductor guide is disposed in a coiled arrangement over a portion of the inner core. Each of the conductors electrically couples at least one electrode to at least one terminal. At least one of the conductors includes a plurality of units. Each unit includes a first conductor segment extending along the inner core from a beginning point to a first position, a coiled conductor segment disposed at least partially in one of the lumens of the coiled conductor guides and extending from the first position to the second position, and a second conductor segment extending along the inner core from the second position to an endpoint.

主权项

1. An implantable lead having a distal end portion and a proximal end portion and comprising:
an inner core with a proximal end portion, a distal end portion, an outer surface, and a longitudinal length, the inner core defining a central lumen and a plurality of inner-core conductor lumens; a plurality of electrodes disposed along the distal end portion of the lead; a plurality of terminals disposed along the proximal end portion of the lead; a plurality of coiled conductor guides wrapped around at least a portion of the inner core, each coiled conductor guide having a first end and a second end, each coiled conductor guide defining a plurality of helical lumens, wherein the plurality of coiled conductor guides are spaced apart from one another along the longitudinal length of the inner core; and a plurality of conductors, each conductor electrically coupling at least one of the plurality of electrodes to at least one of the plurality of terminals, wherein each of the plurality of conductors is encased in conductor insulation that is separate and distinct from each of the inner core and the plurality of coiled conductor guides, wherein at least one of the plurality of conductors is a first conductor that comprises a plurality of units, each unit comprising
a first conductor segment of the first conductor extending from a beginning point to a first position,a coiled conductor segment of the first conductor extending from the first position to a second position, anda second conductor segment of the first conductor extending from the second position to an endpoint,wherein the first position is between the second position and the endpoint, and the second position is between the beginning point and the first position; wherein the first conductor extends along at least one of the plurality of inner-core conductor lumens and at least one of the plurality of helical lumens.