System and method for stimulation of a person's brain stem
According to one embodiment, a neurological stimulation system includes an electrical stimulation lead suited for implantation into the epidural space overlying the medulla for stimulation of nerve tissue in the brain stem. The lead includes a plurality of electrodes suited to be positioned in the epidural space overlying the medulla and to deliver stimulation energy to the nerve tissue. The system also includes a stimulation source suited for implantation into the person's body and operable to generate signals for transmission to the electrodes of the lead positioned in the epidural space overlying the medulla to cause the electrodes to deliver stimulation energy to the nerve tissue. In a particular embodiment, the lead may be suited for implantation posteriorly on, in, or near the brain stem overlying the medulla. In a particular embodiment, the lead may be inserted through an open craniotomy or a burr hole located approximately over the junction of the occiput and the first or second cervical vertebrae.
1. A method for electrical stimulation of target nerve tissue in a person's brain stem, comprising:
selecting an electrical stimulation lead suited for implantation posteriorly on, in, or near the brain stem overlying the medulla for electrical stimulation of target nerve tissue in the brain stem, the lead comprising a plurality of electrodes adapted to be positioned posteriorly on, in, or near the brain stem overlying the medulla and to deliver electrical stimulation energy to the target nerve tissue in the brain stem, the stimulation lead having a generally spiral natural configuration, the spiral natural configuration comprising multiple turns, spacings between adjacent electrodes of the plurality of electrodes being varied between respective turns of the spiral natural configuration;
creating an opening in the person's skull overlying the medulla;
inserting a guide wire into the lead;
inserting the lead, with the guide wire, through the opening in the skull overlying the medulla;
removing the guide wire from the lead; and
positioning the lead posteriorly on, in, or near the brain stem overlying the medulla for electrical stimulation of the target nerve tissue in the brain stem, wherein, upon assuming its spiral natural configuration, electrodes of the stimulation lead form a generally rectangular array overlying the medulla.
2. The method of claim 1 , wherein the opening in the skull comprises an open craniotomy located approximately over the junction of the occiput and the first or second cervical vertebrae.
3. The method of claim 1 , wherein the opening in the skull comprises a burr hole located approximately over the junction of the occiput and the first or second cervical vertebrae.
4. The method of claim 1 , wherein the lead selected is configured for implantation on, in, or near a specific location of the brain stem overlying the medulla.
5. The method of claim 1 , wherein the lead is positioned using stereotactic imaging.
6. The method of claim 1 , wherein the lead is positioned using a navigation system.
7. The method of claim 1 , further comprising anchoring the lead in position.
8. The method of claim 7 , wherein the lead is anchored using one or more of sutures, biocompatible glue, adhesive strips and mechanical tethers.