• Back view of a woman with electrodes on her back. RS-4i Plus device on the left side.

    Reduce Pain & Restore Function

    Since 1990, RS Medical has helped over 1.5 million patients independently reduce pain and restore function with innovative therapies.  

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  • A woman sitting on a light gray armchair, holding RS-4i Plus device while taking a treatment.

    RS-4i® Plus with Intersperse

    The RS-4i Plus is a clinically proven, home-use electrotherapy device with patented Intersperse technology.

    Explore RS-4i Plus
  • A person receiving medical treatment for lower back pain from a healthcare professional.

    Patient Results

    After 30 days of treatment with the RS-4i Plus, nearly half of patients get a 50% reduction in pain.

    Clinical Studies
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    Proud to be named a Top Workplace

    Dedicated to the mission of Improving Lives for our patients, practitioners and employees.

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A woman sitting on a beige couch using the RS-4i Plus.

Reduce Pain & Restore Function

The RS-4i Plus is a clinically proven, home-use electrotherapy device with patented Intersperse technology.

Explore the RS-4i® Plus
  • Back view of a woman with electrodes on her back. RS-4i Plus device is on the left.

    RS-4i® Plus with Intersperse

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  • Back view of a person wearing RS-FBG Full Back Garment.

    RS-FBG™ Full Back Garment

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  • A woman wearing a light blue sports bra and blue shorts wearing the RS-LBG Low Back Garment.

    RS-LBG™ Low Back Garment

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  • A shirtless man with a beard wearing RS-SG Shoulder Garment.

    RS-SG™ Shoulder Garment

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Why Doctors Trust the RS-4i® Plus

Patient Results

Data from over 30,000 patients shows that nearly half get a 50% reduction in pain after 30 days of treatment with the RS-4i Plus.

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Chart showing level of pain reduction, patient count, and percentage improvement. 84% of patients report a 20% or greater reduction in pain. 45% of patients report a 50% or greater reduction in pain. 19% report a 70% or greater reduction in pain.

See the Science

Explore how the RS-4i Plus combines Interferential Therapy (IFT) and Neuromuscular Electrical Stimulation (NMES) into one powerful treatment called Intersperse.

How it Works
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Conditions We Treat

The RS-4i Plus has been prescribed to over 1.5 million patients with a wide variety of chronic musculoskeletal conditions. Explore some of the most common.

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Patient holding back in pain consulting a doctor

Committed to Service 

RS Medical provides a higher level of service than other electrotherapy companies – stepping in to manage much of the hands-on process for the practitioner.

Our Service
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Who We Help

View Patient Stories

Your Non-Narcotic Pain Solution

Healthcare Practitioners

Schedule an in-service demonstration to take a closer look at our technology, patient results and try the RS-4i Plus for yourself.

Book a Demonstration

Patients

The RS-4i Plus requires a prescription from your healthcare practitioner. Explore your options for getting a device.

How to Get a Device