Is a Brace a Medical Device? The Item Called 'Splint' Draws the Line

Key takeaway — Whether a brace is a medical device turns on whether it has a support function, not on its material or the word "medical" in its name. The MFDS product classification notification defines the item as the splint (B05010.01, Class 1) — a device with a support function that compresses or fixes part of the body — and the Annex states in so many words that items without a support or load-bearing function are excluded. If it qualifies, the procedure is not heavy: Class 1 notification. But skip the classification call and build the listing page first, and it can come back as an advertising-regulation issue. Compiled as of September 2026, based directly on the notification text.

Knee braces, wrist braces — everyone asks the same question

Sellers looking to sell or import braces online almost always ask the same first question: "Is this a medical device?" The products themselves range from stretchy bands to items with metal stays built in, and products labeled "medical" sit on the same shelf as ones that aren't.

The short answer: it is not the name or the material but what the product actually does that decides. Article 2(1) of the Medical Devices Act defines a medical device as a device used for purposes including the diagnosis, treatment, alleviation, or correction of injury or impairment — and for the brace family, a separate item table translates that definition into language you can actually apply.

The item table already draws the definition

Annex 1 of the MFDS notification "Regulation on Medical Device Items and Class-by-Item Designation" writes this boundary directly.

Splint [Class 1] — A device with a support function that compresses or fixes part of the body (waist, knee, neck, etc.). Items without a support or load-bearing function are excluded. — Annex 1 of the notification, B05010.01

The whole test is in this one sentence. If there is a support function that compresses or fixes, it is a splint; if that function is absent, the Annex has already excluded it. Since the site of wear (waist, knee, neck, etc.) is listed only as examples rather than a closed list, ankle, elbow, and wrist braces are judged under the same definition.

How to check for an actual support function

The point that trips people up in practice is conflating material with function. Having a metal or plastic stay inside does not automatically make something a splint, and being made entirely of stretch fabric does not automatically exclude it either.

Three things to check: first, whether the product actually has a compression or fixation structure (stays, splints, fixing straps, and the like); second, whether the intended use set by the manufacturer speaks of "support/fixation," or goes no further than "warmth/fit"; third, whether the wording actually used on the listing page and in reviews stays consistent with the manufacturer's stated intended use.

A simple warming knee sleeve or ankle warmer that wraps without any support structure sits in the territory the Annex has already excluded. Conversely, even a thin fabric item, if it has an internal stay and claims an intended use of "fixation," should be reviewed on the splint side.

Notification procedure and cost — light, being Class 1

If judged to be a splint, the procedure itself is light. A manufacturer or importer files a Class 1 item notification; with no technical file review, this is typically processed within 2 to 4 weeks. The statutory fee is KRW 85,000 (e-filing basis).

Notification and sales, however, are separate matters. Selling a notified product domestically requires the seller to separately file a sales business notification, and importing directly from overseas means the import business requirements need review as well. If the structure involves sourcing a product already notified in Korea, the first step is confirming that the model and labeling you're sourcing match the existing notification.

If you carry multiple sizes and models

Braces are typically sold across a size system such as S/M/L, spanning several models at once. Models that differ in dimensions, material, or support structure must be listed as separate models on the notification, and whether every color-only derivative needs its own separate filing can depend on the receiving authority's practice.

When organizing models, preparing per-model photos and drawings, material specifications for key components like stays, and the raw materials that contact skin (including whether latex is present) up front lets notification drafting and labeling review happen in one pass.

Advertising wording to watch

Even after the classification call is settled, listing-page wording can create a new issue. Article 26(7) of the Medical Devices Act prohibits labeling or advertising that risks misleading people into believing a non-medical-device product has performance or efficacy similar to a medical device, and it also prohibits the sale and display of products labeled or advertised that way. A violation is punishable under Article 52(1) by imprisonment of up to three years or a fine of up to KRW 30 million, and the two can be imposed together.

The reverse direction also applies. Even for a notified product, using wording like "treats a herniated disc" that goes beyond the notified intended use creates a mismatch between the notification and the advertising. If you notified a support/fixation function, it is safer to keep the advertising within that scope.

Common mistakes

• Assuming a metal stay always means a medical device, and plain fabric always means a consumer product — the test is the support function and the claimed use, not the material
• Deciding a product is not a splint because the wear site (beyond waist, knee, neck) isn't in the definition — the definition lists examples, not a closed list
• Handling a product with added traction, heating, or electrical stimulation through the same procedure as a plain splint
• Filing the Class 1 notification but skipping the separate sales business notification
• Lumping color-only derivative models together as "the same model" without confirming how they should be filed
• Using wording on a listing page (such as "treatment") that goes beyond the notified intended use

Checklist before you proceed

• Confirm the product has an actual compression or fixation support structure (stays, splints, fixing straps, etc.)
• Confirm whether the manufacturer's stated intended use is "support/fixation" or "warmth/fit"
• Check for added functions such as traction, heating, or electrical stimulation (these may fall under a different item)
• Prepare per-model photos, drawings, and raw-material specifications (including whether specific materials like latex are present)
• Confirm both the Class 1 notification and the sales business notification are in hand
• Confirm the listing-page wording stays within the notified intended use

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A brace's legal identity is decided not by "what kind of object it is" but by "whether it has a support function." Rather than making that call after the listing page is finished, checking the product's structure and intended use at the sourcing stage is the cheapest move. Send product photos and the manufacturer's intended use through a free pre-review, and we will start by confirming whether it qualifies as a splint.

Legal basis: Medical Devices Act (Act No. 21263, in force 1 Jul 2026) Article 2 (Definitions) · Article 26 (Prohibited Conduct), Paragraph 7 · Article 52 (Penal Provisions) · Annex 1 of the 「의료기기 품목 및 품목별 등급에 관한 규정」 (MFDS Notification) — Splint (B05010.01) National Law Information Center original text as the basis; item definitions may change as the notification is amended. The notification fee follows Annex 10 of the Enforcement Rule of the Medical Devices Act (e-filing basis, confirmed September 2026).