Multi-center, Prospective, Controlled, Clinical Trial of Wireless CranioFacial Nerve Stimulation (CFNS) for the Treatment of CranioFacial Neuropathic Pain
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Facial Pain
- Sponsor
- Curonix LLC
- Enrollment
- 60
- Locations
- 7
- Primary Endpoint
- Incidence and severity of adverse events
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
The purpose of this study is to assess the effectiveness of craniofacial nerve stimulation for the treatment of neuropathic pain.
Detailed Description
Subjects will be randomized at enrollment into either a delayed or immediate continuation group. The immediate continuation group will immediately continue with the stimulation after a 30-day trial period and will be monitored for a total of 12 months. The delayed activation group will have their device turned off after the 30-day trial period for the next 3-months. At the 3-month visit, both groups be evaluated and the delayed activation group will have their devices reactivated. Subjects will have neuropathic pain of various etiologies, including trauma, surgery or post-herpetic infections. Stimulators will be placed at the site target of the painful area, including the epifascial plane under the skin but above the muscles in the vicinity of the targeted branches of; A. Branches of Trigeminal Nerves in the Ophthalmic, Maxillary, or Mandibular B. Sensory branches of Facial Nerves C. Branches of the Occipital Nerves (Greater and/or Lesser) D. Branches of the Cervical Plexus (Superficial and/or Deep)
Investigators
Eligibility Criteria
Inclusion Criteria
- •Subject is ≥ 18 years of age at time of informed consent
- •Subjects have been diagnosed with Cranial-facial pain with an average VAS \> 5 (on a 0-10 scale) over the course of the last month based on baseline pain diary.
- •Subject diagnosis with neuropathic cranial-facial pain refractory to conventional medical management for at least 12 months prior to enrollment;
- •Based on the medical opinion of the Principal Investigator, subject has a stable pain medication regimen for 3 months prior to study entry.
- •Based on the medical opinion of the Principal Investigator, subject has a stable Tricyclic regimen for 3 months prior to study entry
- •No medication overuse and not attributed to another causative disorder
- •Based on the medical opinion of the Principal Investigator, there is no evidence of anatomic abnormalities that could jeopardize the placement of the device or pose a hazard to the subject;
- •Based on the opinion of the Principal Investigator, subject is willing and able to operate the patient programmer, recharging equipment, diary and has the ability to undergo study assessments and provide accurate responses;
- •Based on the opinion of the implanter, subject is a good surgical subject for the implant procedure;
- •Subject is willing to undergo surgical implant procedure, attend visits as scheduled, and comply with the study requirements;
Exclusion Criteria
- •A. Subject has undergone botulinum toxin (BOTOX) injections of the head and/or neck in the last 3 months.
- •Unresolved Malignancies in last six months;
- •Subject has a history of migraine, headaches of central origin or trigeminal autonomic cephalalgias;
- •Subject has postherpetic neuralgia (shingles);
- •Complete deafferentation of all branches of the trigeminal, facial, occipital nerves and cervical plexus;
- •Subject has an active systemic infection or is immune-compromised;
- •Based on the medical opinion of the Principal Investigator, Psychologist and/or Psychiatrist, the subject has other psychological conditions (e.g., psychosis, suicidal ideation, borderline personality disorder, somatization, narcissism), other health conditions (e.g., substance abuse, another chronic condition requiring the regular use of opioid medication), or other legal concerns that would preclude his/her enrollment in the study or potentially confound the results of the study;
- •Subject is currently enrolled in or plans to enroll in any concurrent drug and/or device study while participating in this study;
- •Insulin-dependent diabetic who is not controlled through diet and/or medication (determined by the physician) or non-insulin dependent diabetic who is not well controlled through diet and/or medication;
- •Bleeding complications or coagulopathy issues;
Outcomes
Primary Outcomes
Incidence and severity of adverse events
Time Frame: 3 months
Pain Score
Time Frame: 3 months
To achieve a sustained 50% reduction in pain measured by the Visual Analog Scale (VAS)
Secondary Outcomes
- Change from baseline in quality of life, Physical component score using Medical Outcomes Short Form SF-36(Baseline and 3 months)
- Percentage change from baseline in VAS for facial pain(Baseline and 3 months)
- Change from baseline in pain rating index from the Short Form McGill Pain Questionnaire (MPQ-SF-2)(Baseline and 3 months)
- Percent change from baseline in the Brief Pain Inventory-facial (BPIF) Questionnaire(Baseline and 3 months)
- Subject satisfaction with the therapy as measured by the Patient Global Impression of Change (PGIC)(3 months)
- Change from baseline in quality of life, Mental component score using Medical Outcomes Short Form SF-36(Baseline and 3 months)