Patent ID: 7983766
Filing Date: 2011-07-19
Classification: A61M,A61N

Abstract:
1. A method of securing an electrode array of an implantable neural stimulation lead to desired body tissue, comprising: providing a lead comprising a flexible carrier having a distal end and a proximal end, wherein the flexible carrier includes a plurality of helically wound wires and a compressible, flexible material, wherein the wires further define a lumen that passes longitudinally through said flexible carrier, the lumen configured and arranged to receive a fluid to expand the compressible, flexible material, wherein the lead further comprises a first orifice near or at the distal end of the flexible carrier that is in fluid communication with the lumen and wherein the compressible, flexible material comprises at least one inflatable balloon formed near the distal end of the flexible carrier so as to have an inflatable first portion and an inflatable second portion, wherein, prior to inflation, the second portion has different elasticity properties than the first portion, wherein the second portion of the inflatable balloon provides an internal contained relief valve that limits pressure in the first portion; providing an electrode array comprising a plurality of spaced-apart electrode contacts near or at the distal end of the flexible carrier, and wherein the plurality of helically wound wires make electrical contact with the electrode contacts from a proximal end of the lead; providing the compressible, flexible material on the flexible carrier at or near its distal end, wherein the electrode array is disposed on the flexible carrier opposite the compressible, flexible material; implanting the distal end of the flexible carrier into body tissue while the compressible, flexible material is in a compressed state; inflating the at least one inflatable balloon of the compressible, flexible material so that it engages the tissue surrounding the distal end of the implanted neural lead, wherein the compressible, flexible material secures the electrode array to the tissue within which it is implanted; and injecting a first adhering material through said lumen and said first orifice, wherein said adhering material adheres said flexible carrier in the vicinity of the first orifice to surrounding tissue.