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Could a tiny electrical zap ease your back pain?

NCT ID NCT04246281

Symptom relief Sponsor: SPR Therapeutics, Inc. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a device called SPRINT that delivers mild electrical pulses to nerves in the lower back. Researchers compared it to standard treatments like injections or surgery in 230 people with chronic low back pain. The goal was to see if the device could reduce pain and improve daily function.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
SPRINT Peripheral Nerve Stimulation (PNS) System
What this could lead to
If it works, this could offer a non-drug, non-surgical option for managing chronic low back pain.
What could go wrong
The trial is completed but results are not yet widely known. The device is only cleared for short-term use (up to 60 days), so long-term benefits are unclear.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

230 people

The number who actually took part.

Started

Jun 2020

Finished

Apr 2026

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

21 to 75 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Key Inclusion Criteria: * Chronic low back pain Key Exclusion Criteria: * Body Mass Index (BMI) \> 40 * Prior lumbar surgery * Implanted electronic device * Pregnant

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Conditions

The condition(s) this trial relates to.

Back Pain Low Back Pain

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Back pain Low back pain

Contacts and locations

Locations

  • Center for Clinical Research

    Winston-Salem, North Carolina, 27103, United States

  • Denver Back Pain Specialists

    Greenwood Village, Colorado, 80111, United States

  • Duke University

    Durham, North Carolina, 27710, United States

  • Emory University

    Atlanta, Georgia, 30329, United States

  • Hunter Holmes McGuire Veterans Affairs Medical Center

    Richmond, Virginia, 23249, United States

  • IPM Medical Group

    Walnut Creek, California, 94598, United States

  • Institute of Precision Pain Medicine

    Corpus Christi, Texas, 78414, United States

  • International Spine, Pain & Performance Center

    Washington D.C., District of Columbia, 20006, United States

  • Main Line Spine

    King of Prussia, Pennsylvania, 19406, United States

  • Millennium Pain Center

    Bloomington, Illinois, 61704, United States

  • Northwest Speciality Hospital

    Post Falls, Idaho, 83854, United States

  • Premier Pain Centers

    Shrewsbury, New Jersey, 07702, United States

  • Sinai Hospital of Baltimore

    Baltimore, Maryland, 21215, United States

  • Spine and Nerve Center of St. Francis Hospital

    Charleston, West Virginia, 25301, United States

  • The Ohio State University

    Columbus, Ohio, 43210, United States

  • University of Arkansas for Medical Sciences

    Little Rock, Arkansas, 72205, United States

  • University of Utah

    Salt Lake City, Utah, 84108, United States

  • Virginia iSpine Physicians

    Richmond, Virginia, 23235, United States

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