Safety and Efficacy Study of the Evoke™ SCS System With Feedback vs. Conventional Stimulation
EVOKE
A Prospective, Multicenter, Randomized Double-blind Study Examining the Safety and Efficacy of Using the Evoke™ Spinal Cord Stimulator (SCS) System With Feedback to Treat Patients With Chronic Pain of the Trunk and/or Limbs.
1 other identifier
interventional
134
1 country
16
Brief Summary
The purpose of this study is to evaluate the safety and efficacy of the Saluda Medical Evoke SCS System with feedback control to treat chronic pain of the trunk and/or limbs.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable chronic-pain
Started Jan 2017
Longer than P75 for not_applicable chronic-pain
16 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 30, 2016
CompletedFirst Posted
Study publicly available on registry
October 5, 2016
CompletedStudy Start
First participant enrolled
January 27, 2017
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 21, 2018
CompletedResults Posted
Study results publicly available
May 25, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
September 9, 2022
CompletedJanuary 3, 2024
December 1, 2023
1.4 years
September 30, 2016
March 30, 2021
December 14, 2023
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Number of Participants With Composite Endpoint Success
The primary endpoint is a composite endpoint. A success is defined as a reduction in overall trunk and limb VAS pain score greater than or equal to 50 percent and no increase in baseline pain medication. VAS = Visual Analog Scale, from 0 to 100 mm, where 0 = no pain and 100 = worst imaginable pain.
3 months
Secondary Outcomes (9)
Percent Change From Baseline in Leg Pain VAS Score
3 months
Percent Change From Baseline in Back Pain VAS Score
3 months
Proportion of Subjects With Greater Than or Equal to 80% Reduction From Baseline in Overall Trunk and Limb Pain VAS Score
3 months
Proportion of Subjects With Greater Than or Equal to 50% Reduction From Baseline in Back Pain VAS Score
3 months
Number of Participants With Composite Endpoint Success
12 months
- +4 more secondary outcomes
Study Arms (2)
Evoke SCS with Feedback
EXPERIMENTALclosed-loop/automatic stimulation
Evoke SCS with Conventional
ACTIVE COMPARATORopen-loop/manual stimulation
Interventions
Spinal Cord Stimulation that measures and records evoked compound action potentials (ECAPs).
Eligibility Criteria
You may qualify if:
- Subject is male or female between the ages of 18 and 80 years.
- Have been diagnosed with chronic, intractable pain of the trunk and/or limbs, which has been refractory to conservative therapy for a minimum of 6 months.
- Be an appropriate candidate for an SCS trial and the surgical procedures required in this study based on the clinical judgment of the Investigator.
- Be willing and capable of giving informed consent and able to comply with study-related requirements, procedures, and visits.
You may not qualify if:
- Have a medical condition or pain in other area(s), not intended to be treated with SCS, that could interfere with study procedures, accurate pain reporting, and/or confound evaluation of study endpoints, as determined by the Investigator.
- Have evidence of an active disruptive psychological or psychiatric disorder or other known condition significant enough to impact perception of pain, compliance of intervention, and/or ability to evaluate treatment outcomes.
- Have an existing drug pump and/or SCS system or another active implantable device such as a pacemaker, deep brain stimulator (DBS), or sacral nerve stimulator (SNS).
- Have prior experience with SCS.
- Have an active systemic infection or local infection in the area of the surgical site.
- Be pregnant or nursing (if female and sexually active, subject must be using a reliable form of birth control, be surgically sterile, or be at least 2 years post-menopausal).
- Be concomitantly participating in another clinical study.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (16)
Hope Research Institute
Phoenix, Arizona, 85027, United States
Arizona Pain Specialists
Scottsdale, Arizona, 85258, United States
Summit Pain Alliance
Santa Rosa, California, 95401, United States
Thrive Clinic
Santa Rosa, California, 95403, United States
IPM Medical Group
Walnut Creek, California, 94598, United States
Pain Management Associates
Lee's Summit, Missouri, 64086, United States
Premier Pain Centers
Shrewsbury, New Jersey, 07702, United States
Ainsworth Institute of Pain Management
New York, New York, 10022, United States
Center for Clinical Research
Winston-Salem, North Carolina, 27103, United States
University Hospitals Cleveland Medical Center
Cleveland, Ohio, 44106, United States
Cleveland Clinic Foundation
Cleveland, Ohio, 44195, United States
Integrated Pain Solutions
Columbus, Ohio, 43240, United States
St. Luke's University Health Network
Bethlehem, Pennsylvania, 18015, United States
Delaware Valley Pain & Spine Institute
Feasterville-Trevose, Pennsylvania, 19053, United States
Center for Pain Relief
Charleston, West Virginia, 25301, United States
Advanced Pain Management
Greenfield, Wisconsin, 53221, United States
Related Publications (5)
Mekhail NA, Levy RM, Deer TR, Kapural L, Li S, Amirdelfan K, Pope JE, Hunter CW, Rosen SM, Costandi SJ, Falowski SM, Burgher AH, Gilmore CA, Qureshi FA, Staats PS, Scowcroft J, McJunkin T, Carlson J, Kim CK, Yang MI, Stauss T, Petersen EA, Hagedorn JM, Rauck R, Kallewaard JW, Baranidharan G, Taylor RS, Poree L, Brounstein D, Duarte RV, Gmel GE, Gorman R, Gould I, Hanson E, Karantonis DM, Khurram A, Leitner A, Mugan D, Obradovic M, Ouyang Z, Parker J, Single P, Soliday N; EVOKE Study Group. ECAP-controlled closed-loop versus open-loop SCS for the treatment of chronic pain: 36-month results of the EVOKE blinded randomized clinical trial. Reg Anesth Pain Med. 2024 May 7;49(5):346-354. doi: 10.1136/rapm-2023-104751.
PMID: 37640452DERIVEDKapural L, Mekhail NA, Costandi S, Gilmore C, Pope JE, Li S, Hunter CW, Poree L, Staats PS, Taylor RS, Eldabe S, Kallewaard JW, Thomson S, Petersen EA, Sayed D, Deer TR, Antony A, Budwany R, Leitner A, Soliday N, Duarte RV, Levy RM. Durable multimodal and holistic response for physiologic closed-loop spinal cord stimulation supported by objective evidence from the EVOKE double-blind randomized controlled trial. Reg Anesth Pain Med. 2024 Apr 2;49(4):233-240. doi: 10.1136/rapm-2023-104639.
PMID: 37491149DERIVEDCostandi S, Kapural L, Mekhail NA, Jotwani R, Bertisch SM, Li S, Petersen E, Abejon D, Poree L, Ouyang Z, Venkatesan L, Mekhail MN, Gilligan CJ. Impact of Long-Term Evoked Compound Action Potential Controlled Closed-Loop Spinal Cord Stimulation on Sleep Quality in Patients With Chronic Pain: An EVOKE Randomized Controlled Trial Study Subanalysis. Neuromodulation. 2023 Jul;26(5):1030-1038. doi: 10.1016/j.neurom.2022.10.050. Epub 2022 Nov 25.
PMID: 36437161DERIVEDFalowski SM, Kim CH, Obradovic M, Parker JL. A Prospective Multicenter Case Series Utilizing Intraoperative Neuromonitoring With Evoked Compound Action Potentials to Confirm Spinal Cord Stimulation Lead Placement. Neuromodulation. 2022 Jul;25(5):724-730. doi: 10.1016/j.neurom.2021.11.014. Epub 2022 Jan 26.
PMID: 35088735DERIVEDMekhail N, Levy RM, Deer TR, Kapural L, Li S, Amirdelfan K, Hunter CW, Rosen SM, Costandi SJ, Falowski SM, Burgher AH, Pope JE, Gilmore CA, Qureshi FA, Staats PS, Scowcroft J, Carlson J, Kim CK, Yang MI, Stauss T, Poree L; Evoke Study Group. Long-term safety and efficacy of closed-loop spinal cord stimulation to treat chronic back and leg pain (Evoke): a double-blind, randomised, controlled trial. Lancet Neurol. 2020 Feb;19(2):123-134. doi: 10.1016/S1474-4422(19)30414-4. Epub 2019 Dec 20.
PMID: 31870766DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Angela Leitner
- Organization
- Saluda Medical
Study Officials
- STUDY DIRECTOR
Dan Brounstein, MBA
Saluda Medical Americas, Inc.
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
September 30, 2016
First Posted
October 5, 2016
Study Start
January 27, 2017
Primary Completion
June 21, 2018
Study Completion
September 9, 2022
Last Updated
January 3, 2024
Results First Posted
May 25, 2021
Record last verified: 2023-12
Data Sharing
- IPD Sharing
- Will not share