Trialing of ISS in Patients With CRPS

Not Applicable

Completed

• Conditions: CRPS I; Causalgia
• Interventions: Device: Intraspinal-optimal stim therapy

• Registration Number: NCT03954080
• Lead Sponsor: Millennium Pain Center

Brief Summary

This is a multi-center, prospective, open-label, single-arm, observational, feasibility study. The goal of this study is to determine the feasibility of intra-spinal stimulation with optimal paresthesia coverage therapy for chronic pain relief in patients with complex regional pain syndrome type I or causalgia. Up to 20 patients with intractable chronic severe limb pain associated with complex regional pain syndrome (CRPS) will be included in the study. A standard of care trial phase to test a subjects' response to Intraspinal-Optimal Stim therapy will be conducted during a 3 to 10-day period. Patients that obtain 50% or greater pain relief during the trial period will undergo permanent implantation of the device. Primary outcome will evaluate pain response at 3 months of therapy, based on NPRS pain score relative to baseline. Patients will be followed up for 6 months after the start of therapy.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2019-05-14
• Study First Submitted QC: 2019-05-15
• Study First Posted: 2019-05-17
• Study Start: 2019-06-13
• Primary Completion: 2022-03-23
• Study Completion: 2022-03-31
• Status Verified: 2022-04
• Last Update Submitted: 2022-04-03
• Last Update Posted: 2022-04-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 16

Inclusion Criteria

1. Capable of giving written informed consent to participate in this clinical study.
2. Must be 18 years old or older.
3. Predominant pain in one or both of the lower limbs attributed to CRPS or causalgia that has been refractory to conservative therapy for at least 3 months.
4. Average pain intensity larger or equal to 6 on the numeric pain rating scale (NPRS).
5. Appropriate candidate for spinal cord stimulation as determined by the Investigator.
6. Subjects must be on a stable dose of pain medication regimen for at least 1 month.
7. Must be able to comply with the requirements of study visits.
8. Have cognitive ability of operate the remote control and follow therapy instructions and directions by clinicians.

Exclusion Criteria

1. Systemic infection.
2. Any other active implanted device.
3. Evidence of serious neurological, psychological or psychiatric disorders.
4. Previous posterior decompressive laminectomy that precludes appropriate posterior epidural placement of stimulation lead(s).
5. Patient who are pregnant, breast-feeding or women of childbearing potential with positive pregnancy tests.
6. Human immunodeficiency virus (HIV) infection or a clinically significant infection.
7. A clinically significant disorder such as cerebrovascular disease, pulmonary infarction, ischemic heart disease, cardiac dysrhythmia, myocardial infarction, or congestive heart failure or any other as determined by the investigator.
8. Uncontrolled diabetes, uncontrolled pulmonary disease, or uncontrolled hypertension.
9. Patients who have evidence of major psychiatric disease, mental disorder, drug dependency, alcohol dependency, or substance abuse disorders.
10. Patients who have progressive neurological disease such as multiple sclerosis, chronic inflammatory demyelinating polyneuropathy, rapidly progressive arachnoiditis, acute herniated disc, or any other as determined by investigator.
11. Medical condition or pain in other body areas determined by the Investigator as interfering with study procedures, accurate pain reporting, and/or confound evaluation of study end points.
12. Concurrent participation in another clinical study.
13. Involvement in an injury or disability claim under current litigation or a pending or approved workers' compensation claim.
14. Escalating or changing pain condition over the last 30 days that creates difficulty of pain evaluation by the patient.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
ISS	Intraspinal-optimal stim therapy	-

Primary Outcome Measures

Name	Time	Method
Change in pain relative to baseline pain (i.e. prior to therapy) at 3 months after device activation for providing Intraspinal-Optimal Stim therapy	3 months after therapy activation	Change in pain relative to baseline pain (i.e. prior to therapy) at 3 months after device activation for providing Intraspinal-Optimal Stim therapy. Pain scoring will be based on the 11-points (0 to 10) numerical pain rating scale. In this scale a value of 0 means no pain, and a value of 10 reflects the worst imaginable pain.

Trial Locations

Locations (1)

Millennium Pain Center; 🇺🇸 Bloomington, Illinois, United States