Affordable, self-managed pain relief and rehabilitation treatments.

Since 1990, RS Medical has aided more than 1.5 million patients suffering from painful muscle conditions. Together, we can improve patient outcomes, advance the patient experience and reduce the cost of care.

RS-4i® Plus Sequential Stimulator

The RS-4i Plus combines premodulated Interferential therapy at 5000 Hz and NMES at 71 Hz in one device, uniquely providing both pain relief and muscle rehabilitation.

Intersperse®: Muscle stimulation plus long-lasting pain relief in less treatment time

The RS Medical patented Intersperse technology, offered exclusively in the RS-4i Plus, delivers Interferential Therapy for pain relief and NMES for strengthening in a single ~30 minute treatment—no need to move electrodes or switch devices. During the relax period of the muscle stimulation, pain relief signals are delivered. It’s the best of both worlds in one seamless session—work the muscle, knock down the pain, repeat.


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