# 510(k)
A premarket submission to the FDA showing a new device is "substantially equivalent" to a legally marketed predicate device.
What it means. Most Class II medical devices reach the U.S. market through the 510(k) pathway. The applicant compares the new device's intended use, technology, and performance to a predicate, and the FDA either issues a clearance letter or a request for more data. A 510(k)-cleared device is "FDA-cleared," not "FDA-approved."
Why it matters for marketing. Every marketing claim has to match the cleared indication for use exactly. That's the substantiation ceiling. Substantial-equivalence framing ("just like the leading device") is fine in regulatory submissions but should not be exaggerated in promotional copy, where any superiority implication invites both FDA and FTC scrutiny.
In practice: When a client clears a new device, every ad headline, web page, and trade show graphic gets reviewed against the cleared indication for use before launch.