Break free of the negative impacts of pain

There is long-lasting relief from the chronic pain that diminishes your quality of life. Risky surgery or questionably effective drugs with negative side effects are not your only options. You don’t need to accept a life devoid of the activities you love.

Break out of the cycle of spasms and pain with safe, effective relief that’s self-administered in the comfort of your home.

Proven, non-drug pain relief

Combining Interferential therapy and neuromuscular electronic stimulation (NMES), the RS-4i® Plus Sequential Stimulator with Intersperse® offers the long-lasting relief from pain that competing devices cannot. It helps break the cycle of spasms and pain. Unlike transcutaneous electrical nerve stimulation (TENS) or typical NMES devices, the RS-4i Plus uses high frequency (5000 Hz) Interferential therapy that penetrates deep into soft tissue to excite natural endorphin production with the potential to generate up to 8 hours of pain relief post-treatment. NMES then targets the muscle itself, reducing spasms and increasing circulation to produce clinically proven strengthening and healing effects.

The patented Intersperse technology uses this capability to provide pre-programmed and programmable treatments that alternate between pain relieving Interferential Therapy, and muscle stimulating NMES in a single session. With pain relief plus healing, RS Medical devices offer long-lasting relief from the constant battle with pain.

Easy to use

Designed for in-home use, the RS-4i Plus is simple to operate. Just place the electrodes as recommended by your healthcare professional or during your device instruction session and choose the default program. Or, you can select a new program depending on your pain level and needs. For hard to reach places on your back, you can use wearables that slip on like any garment and readily place the electrodes in just the right position. You adjust the treatment intensity to your comfort level, and then just sit back and relax.

Testimonial videos

One-on-one instruction

RS Medical provides every patient with an individual instruction session to help ensure you get the maximum benefit from your device. The session helps you learn device operation, covering how to apply and care for electrodes, how to access treatment programs, fit the wearables and charge the batteries.

RS Medical also surveys all patients to establish their levels of pain and its impact. You’ll get the same survey after approximately 30 days’ use to measure any improvement—data that can help your healthcare provider monitor your condition.

Should you have any questions or concerns, RS Medical Customer Service is there to answer any question about your device and its operation.