RS-4i® Plus Sequential Stimulator with Intersperse

One of the most advanced home-use electrotherapy device available today. Featuring the patented Intersperse treatment.

Practitioners

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Patients

All RS Medical products require a prescription. Download our discussion guide to start a conversation with your practitioner.

    • Relieve acute pain

    • Relieve and manage chronic pain

    • Reduce muscle spasm

    • Maintain or increase range of motion

    • Re-educate muscle

    • Reduce muscle atrophy   

    • Increase blood circulation

    • Prevent venous thrombosis

  • These are the conditions under which this electrical stimulator should not be used:

    • Do not use this device on patients who have a cardiac pacemaker, implanted defibrillator, or other implanted metallic or electronic device because this may cause electric shock, burns, electrical interference, or death.

    • Do not use this device whenever pain syndromes are undiagnosed, until etiology (cause) is established.

    View full list of warnings and precautions on page 4 and 5 of the Product Instructions.

  • RS-4i Plus – 950-0036-00  
    HCPCS E1399

The RS-4i Plus Combines Two Therapies with Intersperse

Twice the Therapy

Unlike other devices that only offer a single type of therapy, the RS-4i Plus features a powerful combination of high-frequency (5,000 Hz) Interferential Therapy (IFT) and Neuromuscular Electrical Stimulation (NMES).

Why are Two Therapies Better?

IFT and NMES act on different nerve groups. IFT targets the nerves responsible for sending pain signals, while NMES targets motor nerves in the muscle tissue. With both, the RS-4i Plus delivers the dynamic duo of pain relief and muscle rehabilitation that less sophisticated devices can’t provide. 

Combining Both Therapies

The RS-4i Plus combines both therapies using a patented technology called Intersperse. During an Intersperse session, IFT pain relief signals are inserted between contractions in the NMES muscle treatment. In this way, the patient gets intermittent contraction, then pain relief, then contraction throughout the duration of a session – enabling shorter, more comfortable and more impactful treatments.

Breaking Down an RS-4i Plus Treatment

Pain Relief

RS-4i Plus Intersperse treatments begin with 5 minutes of Interferential Therapy (IFT), where the transmission of pain signals to the brain are blocked by a high-frequency signal that hyper-stimulates A-beta nerve fibers. Treatment can help relieve acute musculoskeletal pain or relieve and manage chronic musculoskeletal pain. 

Muscle Rehabilitation

After IFT knocks down the pain, the RS-4i Plus shifts to 5 minutes of Neuromuscular Electrical Stimulation (NMES). During this segment, the RS-4i Plus delivers a custom signal that causes the treated muscle to involuntarily contract, relaxing muscle spasms, preventing or slowing muscle atrophy, increasing circulation, and maintaining or increasing range of motion.

Intersperse

Intersperse is the third and most unique segment, which combines IFT and NMES. During this 25-minute treatment, pain relief signals are delivered during the relax period of muscle stimulation – giving the patient a repeating pattern of intermittent contraction, then pain relief, then contraction. This patented intermixing of treatments provokes a beta-endorphin release that provides pain relief up to 8 hours.   

Taking a Treatment

Once prescribed, an RS Medical Representative will provide one-on-one patient instruction on how to use the RS-4i Plus. We also have an Interactive Pad Placement Guide for easy reference on where to place electrodes.

Before Treatment 

During Treatment

After Treatment 

Patient Results

We have collected data from over 30,000 patients after 30 days of treatment using assessment questions adapted from the Defense & Veterans Pain Rating Scale (DVPRS).

45%

of Patients Report a 50% Reduction in Pain

85%

of Patients Experience Pain Relief

73%

of Patients Report Relief Lasting 2+ Hours

Five Reasons to Choose the RS-4i Plus

Ready to Take the Next Step?

Practitioners

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

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Patients

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

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