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Safety and Efficacy Study of the Evoke™ SCS System With Feedback vs. Conventional Stimulation (EVOKE)

Primary Purpose

Chronic Pain, Back Pain, Pain

Status
Completed
Phase
Locations
United States
Study Type
Interventional
Intervention
Evoke Spinal Cord Stimulator (SCS) System
Sponsored by
Saluda Medical Americas, Inc.
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Chronic Pain focused on measuring Chronic Pain, Back Pain, Leg Pain, Pain, Neurologic Manifestations, Nervous System Diseases, Signs and Symptoms, SCS, Closed Loop

Eligibility Criteria

18 Years - 80 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • 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.

Exclusion Criteria:

  • 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.

Sites / Locations

  • Thrive Clinic

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Active Comparator

Arm Label

Evoke SCS with Feedback

Evoke SCS with Conventional

Arm Description

closed-loop/automatic stimulation

open-loop/manual stimulation

Outcomes

Primary Outcome Measures

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.

Secondary Outcome Measures

Change From Baseline in Overall Trunk and Limb VAS Pain Score
VAS = Visual Analog Scale, from 0 to 100 mm, where 0 = no pain and 100 = worst imaginable pain.
Change From Baseline in Back VAS Pain Score
VAS = Visual Analog Scale, from 0 to 100 mm, where 0 = no pain and 100 = worst imaginable pain.
Change From Baseline in Leg VAS Pain Score
VAS = Visual Analog Scale, from 0 to 100 mm, where 0 = no pain and 100 = worst imaginable pain.

Full Information

First Posted
September 30, 2016
Last Updated
September 23, 2022
Sponsor
Saluda Medical Americas, Inc.
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1. Study Identification

Unique Protocol Identification Number
NCT02924129
Brief Title
Safety and Efficacy Study of the Evoke™ SCS System With Feedback vs. Conventional Stimulation
Acronym
EVOKE
Official Title
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.
Study Type
Interventional

2. Study Status

Record Verification Date
September 2022
Overall Recruitment Status
Completed
Study Start Date
January 27, 2017 (Actual)
Primary Completion Date
June 21, 2018 (Actual)
Study Completion Date
September 9, 2022 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Saluda Medical Americas, Inc.

4. Oversight

Device Product Not Approved or Cleared by U.S. FDA
Yes

5. Study Description

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.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Chronic Pain, Back Pain, Pain
Keywords
Chronic Pain, Back Pain, Leg Pain, Pain, Neurologic Manifestations, Nervous System Diseases, Signs and Symptoms, SCS, Closed Loop

7. Study Design

Primary Purpose
Treatment
Interventional Study Model
Parallel Assignment
Masking
ParticipantInvestigator
Allocation
Randomized
Enrollment
134 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Evoke SCS with Feedback
Arm Type
Experimental
Arm Description
closed-loop/automatic stimulation
Arm Title
Evoke SCS with Conventional
Arm Type
Active Comparator
Arm Description
open-loop/manual stimulation
Intervention Type
Device
Intervention Name(s)
Evoke Spinal Cord Stimulator (SCS) System
Intervention Description
Spinal Cord Stimulation that measures and records evoked compound action potentials (ECAPs).
Primary Outcome Measure Information:
Title
Number of Participants With Composite Endpoint Success
Description
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.
Time Frame
3 months
Secondary Outcome Measure Information:
Title
Change From Baseline in Overall Trunk and Limb VAS Pain Score
Description
VAS = Visual Analog Scale, from 0 to 100 mm, where 0 = no pain and 100 = worst imaginable pain.
Time Frame
3 and 12 months
Title
Change From Baseline in Back VAS Pain Score
Description
VAS = Visual Analog Scale, from 0 to 100 mm, where 0 = no pain and 100 = worst imaginable pain.
Time Frame
3 and 12 months
Title
Change From Baseline in Leg VAS Pain Score
Description
VAS = Visual Analog Scale, from 0 to 100 mm, where 0 = no pain and 100 = worst imaginable pain.
Time Frame
3 and 12 months

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
80 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: 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. Exclusion Criteria: 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.
Facility Information:
Facility Name
Thrive Clinic
City
Santa Rosa
State/Province
California
ZIP/Postal Code
95403
Country
United States

12. IPD Sharing Statement

Plan to Share IPD
No
Citations:
PubMed Identifier
35088735
Citation
Falowski 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.
Results Reference
derived
PubMed Identifier
31870766
Citation
Mekhail 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.
Results Reference
derived

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Safety and Efficacy Study of the Evoke™ SCS System With Feedback vs. Conventional Stimulation

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