Rehabilitation Robot Medical Device Approval Guide for Korea

Key takeaway — Rehabilitation robots are a multi-axis review product where mechanics, electronics, software, and human interaction converge in one device. The class usually falls in the Class 2–3 range, and the biggest variable is whether clinical data will be required. And the iron rule of this product: regulatory documents must be created alongside development.

Why a 'multi-axis review'

Gait rehabilitation, upper-limb training, strength assistance — a rehabilitation robot gives the reviewer five axes to examine. Each axis exists in other products too, but what makes this product hard is that all five are required at once, intertwined.

The five axes of review data

1. Mechanical and electrical safety — IEC 60601-1 series. Because the device exchanges force with a human body, the design rationale for actuator safety (entrapment, overload, emergency stop) matters. Confirming the applicable particular and collateral standards for the product must come first.

2. Software — Safety classification of the control software and development documentation (traceability from requirements to design to verification). If an algorithm determines therapy intensity, the documentation bar rises.

3. Performance — Verification data for the claimed rehabilitation functions (assist force, range of motion, training modes).

4. Usability — Because patients and therapists use the device, use-error risk analysis and evaluation carry significant weight.

5. Clinical evaluation / clinical trial — Can it be covered by an equivalent device and literature, or is a Korean clinical trial needed? This is the fork in duration and budget.

A preparation map by development stage

Stage	Regulatory work to do	What happens if you postpone it
Early design	Fix product classification and class, applicable standards list, likelihood of clinical requirements	The most expensive misjudgment
Prototype	Run risk management (ISO 14971 series) and software documentation alongside design	Retroactive writing = effectively a redesign
Verification	Safety and performance testing, usability evaluation	Prolonged deficiencies with no room left for design change
Licensing	Technical file → clinical (if needed) → KGMP in a parallel schedule	Months added if run sequentially

The overall procedure follows Class 2 certification or Class 3 approval depending on the class (see the procedure overview).

Common missteps

Claims that backfire. Developed as a "training device," but the marketing copy claims therapeutic effect — and the medical-device question and class become an issue late in the game.

No software version control. Losing credibility when the submitted documents and the actual version diverge during review — a change management system is your review-response capability itself.

Cramming usability at the end. Running the evaluation just before launch means findings cannot change the design, and the deficiency cycle drags on.

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Rehabilitation robots are a product where a 30-minute review at the design stage saves months. Send your product overview and intended claims for a free pre-review — we will draft the class, the likelihood of clinical requirements, and the standards list.