K031978 is an FDA 510(k) clearance for the AMPLAID A756 SCREENING ADMITTANCE METER. Classified as Tester, Auditory Impedance (product code ETY), Class II - Special Controls.
Submitted by Amplaid (Deer Field, US). The FDA issued a Cleared decision on July 21, 2003 after a review of 25 days - a notably fast clearance cycle.
This device falls under the Ear, Nose, Throat FDA review panel, regulated under 21 CFR 874.1090 - the FDA ear, nose and throat device framework. As a Special 510(k), this submission covers a manufacturer modification to an existing cleared device rather than a new device introduction.
Device pattern: Iterative device modification. Low regulatory complexity profile. This Special 510(k) clearance confirms that the manufacturer's modifications remained within the established regulatory envelope of the original cleared device.