IMPLANTABLE HEAD MOUNTED NEUROSTIMULATION SYSTEM FOR HEAD PAIN

摘要

An implantable head-mounted unibody peripheral neurostimulation system is provided for implantation in the head for the purpose of treating chronic head pain, including migraine. The system may include an implantable pulse generator (IPG) from which multiple stimulating leads may extend sufficient to allow for adequate stimulation over multiple regions of the head, preferably including the frontal, parietal and occipital regions. A lead may include an extended body, along which may be disposed a plurality of surface metal electrodes, which may be sub-divided into a plurality of electrode arrays. A plurality of internal metal wires may run a portion of its length and connect the IPG's internal circuit to the surface metal electrodes. The IPG may include a rechargeable battery, an antenna, and an application specific integrated circuit. The IPG may be capable of functional connection with an external radiofrequency unit for purposes that may include recharging, diagnostic evaluation, and programming.

主权项

1. A head implantable neurostimulator, comprising:
a main body, the main body comprising:
a power source, anda processor, the processor operable to generate a first and second set of stimulating signals for output on associated first set and second set of stimulating outputs; a first wire bundle having a first set and a second set of stimulating conductors, each connected to associated ones of the first set and second set of stimulating outputs; a first elongated lead body extending from the main body to a distal end, the first elongated lead body configured to contain at least a portion of the first wire bundle, the first elongated lead body being fabricated from a flexible material; a first array of surface electrodes disposed along a first portion of the length of the first elongated lead body and connected to the first set of stimulating conductors; a second array of surface electrodes disposed along a second portion of the length of the first elongated lead body and connected to the second set of stimulating conductors, wherein the first portion and second portion are separated by an inter array interval; and a covering over the main body fabricated from the flexible material and merged with the flexible material of the first elongated lead body to form a unibody sealed assembly comprised of the main body and the first elongated lead body.