K991429 is an FDA 510(k) clearance for the DIAMOND II VALVE. Classified as Shunt, Central Nervous System And Components (product code JXG), Class II - Special Controls.
Submitted by Phoenix Biomedical Corp. (Norristown, US). The FDA issued a Cleared decision on May 19, 1999 after a review of 23 days - a notably fast clearance cycle.
This device falls under the Neurology FDA review panel, regulated under 21 CFR 882.5550 - the FDA neurology 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.