Electrically Evoked Compound Action Potentials Human Observation Medtronic Algorithm Comparison Study

Overview

This is a prospective, multi-center, randomized, single-blind, cross-over, non-significant risk IDE research study to evaluate the in-clinic performance of a closed-loop algorithm in Spinal Cord Stimulation (SCS) therapy with an ENS device.

Full Title of Study: “Electrically Evoked Compound Action Potentials Human Observation Medtronic Algorithm Comparison Study (ECHO-MAC)”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Crossover Assignment
    • Primary Purpose: Treatment
    • Masking: Single (Participant)
  • Study Primary Completion Date: July 2021

Interventions

  • Device: Open-loop testing, Closed-loop testing – External Spinal Cord Stimulator (SCS)
    • SCS therapy with an external neurostimulator using either open-loop or closed loop algorithm

Arms, Groups and Cohorts

  • Experimental: Open-loop testing, then Closed-loop testing
    • Subjects receive Open-loop testing, then Closed-loop testing (Spinal Cord Stimulation – SCS Therapy)
  • Experimental: Closed-loop testing, then Open-loop testing
    • Subjects receive Closed-loop testing, then Open-loop testing (Spinal Cord Stimulation – SCS Therapy)

Clinical Trial Outcome Measures

Primary Measures

  • The proportion of subjects with a reduction in overstimulation sensation with SCS using a closed-loop algorithm compared with SCS in open-loop
    • Time Frame: In-clinic testing (1 day)
    • For every overstimulation sensation brought about by protocol-prescribed activities, subjects will rate the intensity of the sensation using a 5-point Likert scale. The average intensity score during OL and CL periods will be calculated for each subject. If the average intensity score during CL period is less than that from the OL period, the subject is considered as a subject with a reduction in overstimulation sensation during CL vs. OL period. The primary endpoint is the proportion of subjects with a reduction in overstimulation sensation among subjects who have in-clinic testing.

Participating in This Clinical Trial

Inclusion Criteria

  • 22 years of age or older – Candidate for or undergoing Medtronic SCS device trial for labeled indication - Candidate for or undergoing a Medtronic SCS device trial for labeled indication means that a clinical decision has already been made between a physician and the patient to undergo Medtronic SCS trialing to treat the patient's chronic pain. This decision is to be made prior to discussing with the patient whether to enroll in the study – Willing and able to provide signed and dated informed consent – Capable of comprehending and consenting in English – Willing and able to comply with all study procedures and visits – Clear, measurable ECAP ECAPs – If during set up of the in-clinic testing, the subject does not have a clear, measurable ECAP (>10uV amplitude obtained consistently and repeatably) they will not move forward with testing or randomization and will be considered a screen failure. Exclusion Criteria:

  • Implanted electrical cardiac devices (e.g., pacemaker, defibrillator) – Currently enrolled or planning to enroll in an interventional clinical study that could potentially confound the study results (co-enrollment in an interventional study is only allowed when documented pre-approval is obtained from the Medtronic study manager or designee) – Pregnant or is of child-bearing potential and unwilling to use a medically acceptable form of birth control during the study – Has untreated major psychiatric comorbidity, as determined by the investigator or designee – Trialed with a permanent implant lead and extension ("buried lead trial") – If subject is classified as vulnerable or requires a legally authorized representative (LAR)

Gender Eligibility: All

Minimum Age: 22 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • MedtronicNeuro
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Contact(s)
    • Stacie Hallaway, 763-514-0152, stacie.hallaway@medtronic.com

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