The RS-4i Plus Sequential Stimulator uniquely combines true high frequency (5000 Hz) Interferential therapy for long-lasting pain relief, with neuromuscular electrical stimulation (NMES) for muscle rehabilitation.

RS-4i Plus Product Overview. Assessment Results. Clinical Bibliography. Fact Sheet. Instructions For Use (IFU) Indications For Use. How to Compare TENS Units – A Review of Price & Performance. How to Compare TENS Units – A Review of Therapeutic Functions. How to Compare TENS Units – A Review of 5 Signal Types

RS-4i® Plus Sequential Stimulator with Intersperse. This true high-frequency device for in-home use helps relieve chronic pain in two ways. First, it delivers pain relieving Interferential (INF) therapy that penetrates deep into soft tissue to excite the body’s natural endorphin production for long-lasting pain relief.

Jun 30, 2020 · The RS-4i Plus combines prescription-strength high frequency (5000 Hz) interferential therapy (INF) for long-lasting pain relief, with neuromuscular electrical stimulation (NMES) for muscle rehabilitation in a patent-approved technology called Intersperse.

Aug 3, 2023 · In addition to Interferential therapy (INF) that acts upon afferent (sensory) nerve fibers to relieve pain, the RS-4i Plus uses neuromuscular electrical stimulation, or NMES, which acts upon efferent (motor) nerve fibers to facilitate muscle rehabilitation.

Feb 25, 2025 · What is the RS-4i Plus? The RS-4i Plus is a true high-frequency electrotherapy device that combines Interferential Therapy (INF) and Neuromuscular Electrical Stimulation (NMES) to deliver powerful pain relief and muscle rehabilitation for …

Feb 13, 2025 · Finding Relief with the RS-4i and Full Back Garment. Jay sought treatment for her pain and mobility issues through the VA and was prescribed the RS-4i Plus combined with the RS-FBG Full Back Garment. Together, they have allowed Jay to evade pain. “The device is awesome,” she says.

The RS-4i Plus is a prescription-strength electrotherapy treatment that, while often categorized as a TENS unit, has little in common with over-the-counter TENS devices. The pain relief provided by high-frequency interferential therapy can have life-enhancing effects for …

Apr 17, 2023 · For neuromuscular stimulation, the RS-4i plus device uses a low frequency 71 Hz biphasic, asymmetrical waveform that affects both fast-twitch and slow-twitch fibers that prompts a thorough muscle contraction.

Learn how to use your RS Medical RS-4i Plus Sequential Stimulator with this comprehensive instruction manual. Includes information on setting up, using, cleaning, and troubleshooting the device.