Implantable flexible circuit leads and methods of use

Abstract

Devices, systems and methods are provided for stimulation of tissues and structures within a body of a patient. In particular, implantable leads are provided which are comprised of a flexible circuit. Typically, the flexible circuit includes an array of conductors bonded to a thin dielectric film. Example dielectric films include polyimide, polyvinylidene fluoride (PVDF) or other biocompatible materials to name a few. Such leads are particularly suitable for stimulation of the spinal anatomy, more particularly suitable for stimulation of specific nerve anatomies, such as the dorsal root (optionally including the dorsal root ganglion).

1 . A method for stimulating a tissue within a body comprising:
 positioning a lead comprising a flexible circuit having at least one electrode so that at least one of the at least one electrode is disposed near a dorsal root; and   supplying electrical energy to the at least one of the at least one electrode so as to stimulate at least a portion of the dorsal root.   
     
     
         2 . A method of  claim 1 , wherein the portion of the dorsal root comprises a dorsal root ganglion. 
     
     
         3 . A method of  claim 1 , further comprising advancing the lead through a foramen. 
     
     
         4 . A method of  claim 1 , further comprising advancing the lead through an epidural space. 
     
     
         5 . A method of  claim 1 , further comprising joining the lead with an implantable pulse generator. 
     
     
         6 . A method of  claim 6 , further comprising implanting the lead and the implantable pulse generator wholly within the body.