Implantable leads with a low profile distal portion

摘要

A stimulation lead includes an elongate body having a proximal portion and a distal portion and has a multilumen tube extending along the elongate body and defining a central lumen and a plurality of peripheral lumens disposed circumferentially around the central lumen; a plurality of conductors, at least one of the conductors extending along the central lumen and a remainder of the conductors extending along the plurality of peripheral lumens with at least one of the conductors in each peripheral lumen; a plurality of terminals disposed along the proximal portion of the elongate body and electrically coupled to proximal ends of the conductors; and a plurality of electrodes disposed along the distal portion of the elongate body and electrically coupled to distal ends of the conductors. Each of the conductors is coupled to at least one terminal and at least one electrode.

主权项

1. A stimulation lead having a proximal portion and a distal portion, the stimulation lead comprising:
an elongate body having a proximal portion and a distal portion; a plurality of terminals disposed along the proximal portion of the elongate body; a plurality of electrodes disposed along the distal portion of the elongate body; and a plurality of conductors coupling the plurality of terminals to the plurality of electrodes, wherein the proximal portion of the stimulation lead has a circular lateral cross-section with an outer diameter and the distal portion of the stimulation lead comprises a low-profile region in which the stimulation lead has a non-circular lateral cross-section with an outer diameter that is no greater than the outer diameter of the circular lateral cross-section in any direction and, in at least one direction, is at least 10% less than the outer diameter of the circular lateral cross-section, wherein the plurality of electrodes are disposed in a portion of the low-profile region, wherein the outer diameter of the low-profile region of the stimulation lead with the non-circular lateral cross-section is no more than 0.039″ in any direction and is constant in at least the portion in which the electrodes are disposed.