Implantable flexible circuit leads and methods of use
First Claim
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1. A system for stimulating a dorsal root ganglion, comprising:
- a first elongate flexible implantable dielectric structure having a first proximal end and a first distal end, wherein the first distal end has a first elongate inner surface having a first electrode disposed thereon; and
a second elongate flexible implantable dielectric structure having a second proximal end and a second distal end, wherein the second distal end has a second elongate inner surface having a second electrode disposed thereon,wherein the first and second proximal ends are configured to join along a central longitudinal axis so that the first and second elongate inner surfaces are configured to extend lengthwise along the central longitudinal axis and so that in use stimulating a dorsal root ganglion the first and second electrodes are configured for placement at least partially within a vertebral foramen containing the dorsal root ganglion to direct stimulation energy toward the central longitudinal axis, andwherein at least one of the first and second distal ends are configured to move away from the central longitudinal axis while the first and second proximal ends are joined so as to allow the dorsal root ganglion to be positioned at least partially between the first and second distal ends to receive the stimulation energy that is directed by the first and second electrodes toward the central longitudinal axis.
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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).
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Citations
23 Claims
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1. A system for stimulating a dorsal root ganglion, comprising:
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a first elongate flexible implantable dielectric structure having a first proximal end and a first distal end, wherein the first distal end has a first elongate inner surface having a first electrode disposed thereon; and a second elongate flexible implantable dielectric structure having a second proximal end and a second distal end, wherein the second distal end has a second elongate inner surface having a second electrode disposed thereon, wherein the first and second proximal ends are configured to join along a central longitudinal axis so that the first and second elongate inner surfaces are configured to extend lengthwise along the central longitudinal axis and so that in use stimulating a dorsal root ganglion the first and second electrodes are configured for placement at least partially within a vertebral foramen containing the dorsal root ganglion to direct stimulation energy toward the central longitudinal axis, and wherein at least one of the first and second distal ends are configured to move away from the central longitudinal axis while the first and second proximal ends are joined so as to allow the dorsal root ganglion to be positioned at least partially between the first and second distal ends to receive the stimulation energy that is directed by the first and second electrodes toward the central longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification