Lumbar Injectrode Feasibility Evaluation

Inclusion Criteria: * Be 21 years of age or older when written informed consent is obtained. * Literate, able to speak English and able to complete questionnaires independently. * Willing to sign an Institutional Review Board (IRB)-approved informed consent form (ICF) and deemed capable of complying with the study requirements. * Are currently receiving optimal medical management and considered medically stable as judged by the investigator for any significant medical condition. * Be able to tolerate minimally invasive electrical stimulation. * Be willing and able to understand and comply with all study-related procedures during the course of the study, and attend all scheduled study visits. Exclusion Criteria: * Severe cognitive impairment as determined by the Investigator. * If female and sexually active, and the subject is not using a reliable form of birth control, is not surgically sterile or at least two years post-menopausal, the subject shall be excluded, as confirmed by the Investigator. * If female, have a positive pregnancy test at the screening and/or Day 0 visit. * Pre-existing motor, balance, proprioception, or sensory deficits as determined by Investigator. * Show symptoms indicative of Covid-19 as assessed during enrollment. * Have a skin condition at the planned surgical location. * Have a blood coagulation disorder or other indication with the potential to impact the study biocompatibility data in unpredictable ways. * Have a medical condition that is a contraindication for minimally invasive procedures. * Have a cardiac demand pacemaker, implanted defibrillator or another implanted electronic device. * Have a history of cardiac arrhythmia with hemodynamic instability. * Be implanted with a neurostimulator. * Have any active electrical implant of any other kind. * Have an active infection. * Current coagulopathy, thrombocytopenia or bleeding diathesis (confirmed by clinical history and, if clinically indicated, by coagulation screening). * Have untreated drug habituation or dependence. * Have uncontrolled seizures (averaging \> 2 seizures per month). * Currently require, or be likely to require, diathermy and/or MRI during study duration. * Known hypersensitivity to any of the procedural agents or materials in the study device that is inserted into the subject. * Have a history of adverse reactions to local anesthetics (e.g. lidocaine). * A systemic condition or disease not stabilized or judged by the Investigator to be incompatible with …